Sample & Buy Product Folder Support & Community Tools & Software Technical Documents LM2590HV SNVS084C - DECEMBER 2001 - REVISED JULY 2016 LM2590HV SIMPLE SWITCHER(R) Power Converter 150-kHz, 1-A Step-Down Voltage Regulator 1 Features 3 Description * * The LM2590HV series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3-V, 5-V, and an adjustable output version. 1 * * * * * * * * * * 3.3-V, 5-V, and Adjustable Output Versions Adjustable Version Output Voltage Range, 1.2 V to 57 V 4% Max Over Line and Load Conditions Ensured 1-A Output Load Current Available in 7-Pin TO-220 and TO-263 (SurfaceMount) Package Input Voltage Range Up To 60 V 150-kHz Fixed Frequency Internal Oscillator Shutdown and Soft-start Out Of Regulation Error Flag Error Flag Delay Low Power Standby Mode, IQ: 90 A (Typical) High Efficiency Thermal Shutdown And Current Limit Protection This series of switching regulators is similar to the LM2591HV with additional supervisory and control features. Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation, improved line and load specifications, fixed-frequency oscillator, Shutdown/Soft-start, output error flag and flag delay. The LM2590HV operates at a switching frequency of 150 kHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. Available in a standard 7-pin TO-220 package with several different lead bend options, and a 7-pin TO-263 surface-mount package. 2 Applications * * * * Simple High-Efficiency Step-Down (Buck) Regulators Efficient Preregulator For Linear Regulators On-Card Switching Regulators Positive-To-Negative Converters Other features include an ensured 4% tolerance on output voltage under all conditions of input voltage and output load conditions, and 15% on the oscillator frequency. External shutdown is included, featuring 90-A standby current (typical). Self protection features include a two stage current limit for the output switch and an over temperature shutdown for complete protection under fault conditions. Device Information(1) PART NUMBER LM2590HV PACKAGE BODY SIZE (NOM) TO-220 (7) 14.99 mm x 10.16 mm TO-263 (7) 10.10 mm x 8.89 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Typical Application (Fixed Output Voltage Versions) +VIN +12V Unregulated DC Input Feedback 1 10 NY Error Flag Flag 6 LM2590HV 5.0 3 Shutdown/Soft - start 7 SD /SS + 330 F CIN CSS 0.1 F 5 Delay Output 2 4 Gnd 33 H + D1 1N5824 +5.0V Regulated Output COUT 220 F 1A Load CDELAY 0.1 F Copyright (c) 2016, Texas Instruments Incorporated 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. LM2590HV SNVS084C - DECEMBER 2001 - REVISED JULY 2016 www.ti.com Table of Contents 1 2 3 4 5 6 Features .................................................................. Applications ........................................................... Description ............................................................. Revision History..................................................... Pin Configuration and Functions ......................... Specifications......................................................... 1 1 1 2 3 5 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 5 5 5 5 6 7 7 7 9 Absolute Maximum Ratings ...................................... ESD Ratings.............................................................. Recommended Operating Conditions....................... Thermal Information .................................................. Electrical Characteristics........................................... Electrical Characteristics - 3.3-V Version................. Electrical Characteristics - 5-V Version.................... Electrical Characteristics - Adjustable Version......... Typical Characteristics .............................................. 7 Parameter Measurement Information ................ 13 8 Detailed Description ............................................ 15 7.1 Test Circuits ............................................................ 13 8.1 Overview ................................................................. 15 8.2 Functional Block Diagram ....................................... 15 8.3 Feature Description................................................. 15 8.4 Device Functional Modes........................................ 18 9 Application and Implementation ........................ 19 9.1 Application Information............................................ 19 9.2 Typical Application .................................................. 21 10 Power Supply Recommendations ..................... 25 11 Layout................................................................... 25 11.1 Layout Guidelines ................................................. 25 11.2 Layout Examples................................................... 25 11.3 Thermal Considerations ........................................ 26 12 Device and Documentation Support ................. 28 12.1 12.2 12.3 12.4 12.5 12.6 Documentation Support ........................................ Receiving Notification of Documentation Updates Community Resources.......................................... Trademarks ........................................................... Electrostatic Discharge Caution ............................ Glossary ................................................................ 28 28 28 28 28 28 13 Mechanical, Packaging, and Orderable Information ........................................................... 28 4 Revision History Changes from Revision B (December 2001) to Revision C * 2 Page Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section .................................................................................................. 1 Submit Documentation Feedback Copyright (c) 2001-2016, Texas Instruments Incorporated Product Folder Links: LM2590HV LM2590HV www.ti.com SNVS084C - DECEMBER 2001 - REVISED JULY 2016 5 Pin Configuration and Functions NDZ Package 7-Pin TO-220 Top View KTW Package 7-Pin TO-263 Top View Not to scale 7 SD/SS 6 Feedback 5 Delay 4 Ground 3 Flag 2 Output 1 VIN 1 2 3 4 5 6 7 VIN Output Flag Ground Delay Feedback SD/SS Not to scale Pin Functions PIN NO. NAME TYPE (1) DESCRIPTION 1 VIN I This is the positive input supply for the IC switching regulator. A suitable input bypass capacitor must be present at this pin to minimize voltage transients and to supply the switching currents needed by the regulator. 2 Output O Internal switch. The voltage at this pin switches between approximately (+VIN - VSAT) and approximately -0.5 V, with a duty cycle of VOUT/VIN. 3 Flag O Open collector output that goes active low (1 V) when the output of the switching regulator is out of regulation (less than 95% of its nominal value). In this state it can sink maximum 3 mA. When not low, it can be pulled high to signal that the output of the regulator is in regulation (power good). During power-up, it can be programmed to go high after a certain delay as set by the Delay pin (Pin 5). The maximum rating of this pin must not be exceeded, so if the rail to which it will be pulled-up to is higher than 45 V, a resistive divider must be used instead of a single pull-up resistor, as indicated in Test Circuits. 4 Ground G Circuit ground O This sets a programmable power-up delay from the moment that the output reaches regulation, to the high signal output (power good) on Pin 3. A capacitor on this pin starts charging up by means on an internal (3 A) current source when the regulated output rises to within 5% of its nominal value. Pin 3 goes high (with an external pull-up) when the voltage on the capacitor on Pin 5 exceeds 1.3 V. The voltage on this pin is clamped internally to about 1.7 V. If the regulated output drops out of regulation (less than 95% of its nominal value), the capacitor on Pin 5 is rapidly discharged internally and Pin 3 will be forced low in about 1/1000th of the set power-up delay time. I Senses the regulated output voltage to complete the feedback loop. This pin is directly connected to the Output for the fixed voltage versions, but is set to 1.23 V by means of a resistive divider from the output for the adjustable version. If a feedforward capacitor is used (adjustable version), then a negative voltage spike is generated on this pin whenever the output is shorted. This happens because the feedforward capacitor cannot discharge fast enough, and since one end of it is dragged to Ground, the other end goes momentarily negative. To prevent the energy rating of this pin from being exceeded, a small-signal Schottky diode to Ground is recommended for DC input voltages above 40 V whenever a feedforward capacitor is present (see Test Circuits). Feedforward capacitor values larger than 0.1 F are not recommended for the same reason, whatever be the DC input voltage. 5 6 (1) Delay Feedback G = Ground, I = Input, O = Output Submit Documentation Feedback Copyright (c) 2001-2016, Texas Instruments Incorporated Product Folder Links: LM2590HV 3 LM2590HV SNVS084C - DECEMBER 2001 - REVISED JULY 2016 www.ti.com Pin Functions (continued) PIN NO. 7 4 NAME SD/SS TYPE (1) DESCRIPTION I Shutdown/Soft-start: The regulator is in shutdown mode, drawing about 90 A, when this pin is driven to a low level (0.6 V), and is in normal operation when this Pin is left floating (internal-pullup) or driven to a high level (2 V). The typical value of the threshold is 1.3 V and the pin is internally clamped to a maximum of about 7 V. If it is driven higher than the clamp voltage, it must be ensured by means of an external resistor that the current into the pin does not exceed 1 mA. The duty cycle is minimum (0%) if this Pin is below 1.8 V, and increases as the voltage on the pin is increased. The maximum duty cycle (100%) occurs when this pin is at 2.8 V or higher. So adding a capacitor to this pin produces a soft-start feature. An internal current source will charge the capacitor from zero to its internally clamped value. The charging current is about 5 A when the pin is below 1.3 V but is reduced to only 1.6 A above 1.3 V, so as to allow the use of smaller soft-start capacitors. Submit Documentation Feedback Copyright (c) 2001-2016, Texas Instruments Incorporated Product Folder Links: LM2590HV LM2590HV www.ti.com SNVS084C - DECEMBER 2001 - REVISED JULY 2016 6 Specifications 6.1 Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted) (1) MIN MAX UNIT 63 V Supply voltage, VIN SD/SS pin input voltage (2) Delay pin voltage (2) 6 V 1.5 V Flag pin voltage -0.3 45 V Feedback pin voltage -0.3 25 V -1 V Output voltage to ground, steady-state Power dissipation Internally limited S package Lead temperature Vapor phase (60 s) 215 Infrared (10 s) 245 T package, soldering (10 s) Maximum junction temperature Storage temperature, Tstg (1) (2) C 260 -65 150 C 150 C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. Voltage internally clamped. If clamp voltage is exceeded, limit current to a maximum of 1 mA. 6.2 ESD Ratings V(ESD) (1) Electrostatic discharge Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001 (1) VALUE UNIT 2000 V JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. 6.3 Recommended Operating Conditions over operating free-air temperature range (unless otherwise noted) TJ MIN MAX Supply voltage 4.5 60 UNIT V Temperature -40 125 C 6.4 Thermal Information LM2590HV THERMAL METRIC RJA RJC (1) (2) (3) (4) (5) (1) Junction-to-ambient thermal resistance NDZ (TO-220) KTW (TO-263) 7 PINS 7 PINS See (2) 50 -- (3) -- 50 See (4) -- 30 See (5) -- 20 2 2 See Junction-to-case thermal resistance UNIT C/W C/W For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report. Junction to ambient thermal resistance (no external heat sink) for the package mounted TO-220 package mounted vertically, with the leads soldered to a printed-circuit board with (1 oz.) copper area of approximately 1 in2. Junction to ambient thermal resistance with the TO-263 package tab soldered to a single sided printed-circuit board with 0.5 in2 of (1 oz.) copper area. Junction to ambient thermal resistance with the TO-263 package tab soldered to a single sided printed-circuit board with 2.5 in2 of (1 oz.) copper area. Junction to ambient thermal resistance with the TO-263 package tab soldered to a double sided printed circuit board with 3 in 2 of (1 oz.) copper area on the LM2590HVS side of the board, and approximately 16 in2 of copper on the other side of the PCB. See Application Information in this data sheet. Submit Documentation Feedback Copyright (c) 2001-2016, Texas Instruments Incorporated Product Folder Links: LM2590HV 5 LM2590HV SNVS084C - DECEMBER 2001 - REVISED JULY 2016 www.ti.com 6.5 Electrical Characteristics TJ = 25C, VIN = 12 V for the 3.3-V, 5-V, and adjustable version, and ILOAD = 500 mA (unless otherwise noted) PARAMETER Ib Feedback bias current fO Oscillator frequency (3) VSAT Saturation voltage Max duty cycle (ON) DC MIN (1) TYP (2) TEST CONDITIONS Adjustable version only, VFB = 1.3 V TJ = 25C 10 TJ = -40C to 125C TJ = 25C 127 TJ = -40C to 125C 110 IOUT = 1 A (4) (5) 1.2 (5) 150 173 173 0.95 1.3 UNIT nA kHz V 100% 0% ICLIM Switch current limit Peak current (4) (5) IL Output leakage current VIN = 60 V (4) (6) IQ Operating quiescent current SD/SS pin open (6) Standby quiescent current 50 100 Min duty cycle (OFF) (6) ISTBY MAX (1) SD/SS pin = 0 V, VIN = 60 V TJ = 25C 1.3 TJ = -40C to 125C 1.2 1.9 3 Output = 0 V Output = -1 V TJ = 25C 2.8 A 50 A 5 30 mA 5 10 mA 90 200 TJ = -40C to 125C 250 A SHUTDOWN AND SOFT-START CONTROL (see Test Circuits) TJ = 25C VSD Shutdown threshold voltage TJ = -40C to 125C 1.3 Low (shutdown mode) High (soft-start mode) 0.6 2 VOUT = 20% of nominal output voltage 2 VOUT = 100% of nominal output voltage 3 VSS Soft-start voltage ISD Shutdown current VSHUTDOWN = 0.5 V ISS Soft-start current VSoft-start = 2.5 V V V 5 10 A 1.5 5 A 92% 96% 98% 0.7 0.3 1 FLAG AND DELAY CONTROL (see Test Circuits) Regulator dropout detector threshold voltage Low (flag ON) VFSAT Flag output saturation and voltage ISINK = 3 mA IFL Flag output leakage current VFLAG = 60 V Delay pin threshold voltage Delay pin source current Delay pin saturation (1) (2) (3) (4) (5) (6) 6 0.3 Low (flag ON) 1.21 High (flag OFF) and VOUT regulated VDELAY = 0.5 V Low (flag ON) 1.25 1.25 TJ = 25C TJ = -40C to 125C V A 1.29 3 6 70 350 400 mV mV mV All limits specified at room temperature and at temperature extremes. All room temperature limits are 100% production tested. All limits at temperature extremes are specified via correlation using standard Statistical Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL). Typical numbers are at 25C and represent the most likely norm. The switching frequency is reduced when the second stage current limit is activated. The amount of reduction is determined by the severity of current overload. No diode, inductor or capacitor connected to output pin. Feedback pin removed from output and connected to 0 V to force the output transistor switch ON. Feedback pin removed from output and connected to 12 V for the 3.3-V, 5-V, and the ADJ version to force the output transistor switch OFF. Submit Documentation Feedback Copyright (c) 2001-2016, Texas Instruments Incorporated Product Folder Links: LM2590HV LM2590HV www.ti.com SNVS084C - DECEMBER 2001 - REVISED JULY 2016 6.6 Electrical Characteristics - 3.3-V Version TJ = 25C (unless otherwise noted) (1) PARAMETER VOUT Output voltage 4.5 V VIN 60 V, 0.2 A ILOAD 1 A Efficiency VIN = 12 V, ILOAD = 1 A (1) (2) (3) MIN (2) TYP (3) TEST CONDITIONS TJ = 25C 3.168 TJ = -40C to 125C 3.135 MAX (2) 3.3 3.432 3.465 UNIT V 77% External components such as the catch diode, inductor, input and output capacitors can affect switching regulator system performance. When the LM2590HV is used as shown in Test Circuits, system performance will be as shown in system parameters section of Electrical Characteristics. All limits specified at room temperature and at temperature extremes. All room temperature limits are 100% production tested. All limits at temperature extremes are specified via correlation using standard Statistical Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL). Typical numbers are at 25C and represent the most likely norm. 6.7 Electrical Characteristics - 5-V Version TJ = 25C (unless otherwise noted) (1) PARAMETER TEST CONDITIONS VOUT Output voltage 7 V VIN 60 V, 0.2 A ILOAD 1 A Efficiency VIN = 12 V, ILOAD = 1 A (1) (2) (3) TJ = 25C TJ = -40C to 125C MIN (2) TYP (3) 4.8 5 4.75 MAX (2) 5.2 5.25 UNIT V 82% External components such as the catch diode, inductor, input and output capacitors can affect switching regulator system performance. When the LM2590HV is used as shown in Test Circuits, system performance will be as shown in system parameters section of Electrical Characteristics. All limits specified at room temperature and at temperature extremes. All room temperature limits are 100% production tested. All limits at temperature extremes are specified via correlation using standard Statistical Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL). Typical numbers are at 25C and represent the most likely norm. 6.8 Electrical Characteristics - Adjustable Version TJ = 25C (unless otherwise noted) (1) PARAMETER TEST CONDITIONS VFB Feedback voltage 4.5 V VIN 60 V, 0.2 A ILOAD 1 A, VOUT programmed for 3 V (see Test Circuits) Efficiency VIN = 12 V, VOUT = 3 V, ILOAD = 1 A (1) (2) (3) TJ = 25C TJ = -40C to 125C MIN (2) TYP (3) MAX (2) 1.193 1.23 1.267 1.18 1.28 UNIT V 76% External components such as the catch diode, inductor, input and output capacitors can affect switching regulator system performance. When the LM2590HV is used as shown in Test Circuits, system performance will be as shown in system parameters section of Electrical Characteristics. All limits specified at room temperature and at temperature extremes. All room temperature limits are 100% production tested. All limits at temperature extremes are specified via correlation using standard Statistical Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL). Typical numbers are at 25C and represent the most likely norm. Submit Documentation Feedback Copyright (c) 2001-2016, Texas Instruments Incorporated Product Folder Links: LM2590HV 7 LM2590HV SNVS084C - DECEMBER 2001 - REVISED JULY 2016 www.ti.com Figure 1. Timing Diagram for 5-V Output 8 Submit Documentation Feedback Copyright (c) 2001-2016, Texas Instruments Incorporated Product Folder Links: LM2590HV LM2590HV www.ti.com SNVS084C - DECEMBER 2001 - REVISED JULY 2016 6.9 Typical Characteristics Figure 2. Normalized Output Voltage Figure 3. Line Regulation Figure 4. Efficiency Figure 5. Switch Saturation Voltage Figure 6. Switch Current Limit Figure 7. Dropout Voltage Submit Documentation Feedback Copyright (c) 2001-2016, Texas Instruments Incorporated Product Folder Links: LM2590HV 9 LM2590HV SNVS084C - DECEMBER 2001 - REVISED JULY 2016 www.ti.com Typical Characteristics (continued) 10 Figure 8. Operating Quiescent Current Figure 9. Shutdown Quiescent Current Figure 10. Minimum Operating Supply Voltage Figure 11. Feedback Pin Bias Current Figure 12. Flag Saturation Voltage Figure 13. Switching Frequency Submit Documentation Feedback Copyright (c) 2001-2016, Texas Instruments Incorporated Product Folder Links: LM2590HV LM2590HV www.ti.com SNVS084C - DECEMBER 2001 - REVISED JULY 2016 Typical Characteristics (continued) Figure 14. Soft-Start Figure 15. Shutdown/Soft-Start Current Figure 16. Delay Pin Current Figure 17. Soft-Start Response Figure 18. Shutdown/Soft-start Threshold Voltage Figure 19. Internal Gain-Phase Characteristics Submit Documentation Feedback Copyright (c) 2001-2016, Texas Instruments Incorporated Product Folder Links: LM2590HV 11 LM2590HV SNVS084C - DECEMBER 2001 - REVISED JULY 2016 www.ti.com Typical Characteristics (continued) Horizontal Time Base: 2 s/div. VIN = 20 V, VOUT = 5 V, ILOAD = 1 A, L = 52 H, COUT = 100 F, COUT ESR = 100 m Output Pin Voltage, 10 V/div. Inductor Current, 0.5 A/div. Output Ripple Voltage, 50 mV/div. Figure 20. Continuous Mode Switching Waveforms Horizontal Time Base: 50 s/div. VIN = 20 V, VOUT = 5 V, ILOAD = 250 mA, L = 52 H, COUT = 100 F, COUT ESR = 100 m Output Voltage, 100 mV/div. (AC) 250-mA to 1-A Load Pulse Figure 22. Load Transient Response for Continuous Mode 12 Horizontal Time Base: 2 s/div. VIN = 20 V, VOUT = 5 V, ILOAD = 250 mA, L = 52 H, COUT = 150 F, COUT ESR = 100 m Output Pin Voltage, 10 V/div. Inductor Current, 0.25 A/div. Output Ripple Voltage, 100 mV/div. Figure 21. Discontinuous Mode Switching Waveforms Horizontal Time Base: 200 s/div. VIN = 20 V, VOUT = 5 V, ILOAD = 250 mA to 1 A, L = 15 H, COUT = 150 F, COUT ESR = 90 m Output Voltage, 100 mV/div. (AC) 250-mA to 1-A Load Pulse Figure 23. Load Transient Response for Discontinuous Mode Submit Documentation Feedback Copyright (c) 2001-2016, Texas Instruments Incorporated Product Folder Links: LM2590HV LM2590HV www.ti.com SNVS084C - DECEMBER 2001 - REVISED JULY 2016 7 Parameter Measurement Information 7.1 Test Circuits Rpull up ERROR OUTPUT FEEDBACK FLAG +VIN LM2590HV FIXED OUTPUT (VOUT) REGULATED OUTPUT OUTPUT L1 UNREGULATED DC INPUT GND + SD/SS DELAY CIN CSS CDELAY + COUT D1 L O A D 3 H L O 180 F A D + LOW ESR SHORT LEADS SHUTDOWN INPUT OPTIONAL POST RIPPLE FILTER Copyright (c) 2016, Texas Instruments Incorporated Component Values shown are for VIN = 15 V, VOUT = 5 V, ILOAD = 1 A. CIN -- 470-F, 50-V aluminum electrolytic Nichicon PM Series COUT -- 220-F, 25-V aluminum electrolytic Nichcon PM Series D1 -- 2-A, 60-V Schottky Rectifier, 21DQ06 (international rectifier) L1 -- 68 H, see Inductor Selection Procedure Figure 24. Fixed Output Voltage Versions Submit Documentation Feedback Copyright (c) 2001-2016, Texas Instruments Incorporated Product Folder Links: LM2590HV 13 LM2590HV SNVS084C - DECEMBER 2001 - REVISED JULY 2016 www.ti.com Test Circuits (continued) FEEDFORWARD CAPACITOR CFF TO REGULATED OUTPUT VOLTAGE R1 R2 1 NY Rpull up FEEDBACK ERROR OUTPUT (VOUT) REGULATED OUTPUT FLAG +VIN LM2590HV ADJUSTABLE OUTPUT L1 + UNREGULATED DC INPUT GND SD/SS DELAY CIN CSS CDELAY D1 + COUT L O A D SHUTDOWN INPUT Copyright (c) 2016, Texas Instruments Incorporated Select R1 to be approximately 1 k, use a 1% resistor for best stability. Component values shown are for VIN = 20 V, VOUT = 10 V, ILOAD = 1 A. CIN -- 470-F, 35-V aluminum electrolytic Nichicon PM Series COUT -- 220-F, 35-V aluminum electrolytic Nichicon PM Series D1 -- 2-A, 60-V Schottky Rectifier, 21DQ06 (international rectifier) L1 -- 100 H, see Inductor Selection Procedure R1 -- 1 k, 1% R2 -- 7.15 k, 1% CFF -- 3.3 nF Typical Values CSS -- 0.1 F CDELAY -- 0.1 F RPULL UP -- 4.7 k (use 22 k if VOUT is 45 V) Resistive divider is required to avoid exceeding maximum rating of 45 V, 3 mA on or into flag pin. Small signal Schottky diode to prevent damage to feedback pin by negative spike when output is shorted. Required if VIN > 40 V Figure 25. Adjustable Output Voltage Versions 14 Submit Documentation Feedback Copyright (c) 2001-2016, Texas Instruments Incorporated Product Folder Links: LM2590HV LM2590HV www.ti.com SNVS084C - DECEMBER 2001 - REVISED JULY 2016 8 Detailed Description 8.1 Overview The LM2590HV SIMPLE SWITCHER(R) regulator is an easy to use non-synchronous step-down DC-DC converter with a wide input voltage range up to 60 V. It is capable of delivering up to 1-A DC load current with excellent line and load regulation. These devices are available in fixed output voltages of 3.3-V, 5-V, 12-V and an adjustable output version. The family requires few external components and the pin arrangement was designed for simple, optimum PCB layout. 8.2 Functional Block Diagram (7) (3) ERROR SHUTDOWN / FLAG SOFT-START (5) DELAY 220 mV 220 mV + CURRENT 1.235V SOURCE REFERENCE BIAS START UP 2.5V REGULATOR Soft-start VIN (1) + + COMP. FLAG & DELAY 2.5V CURRENT LIMIT COMP. (6) FEEDBACK GM + + AMP R2 ACTIVE CPACITOR R1= 2.5 NY COMP. LATCH + FREQ. SHIFT + OP AMP 3.3V, R2 = 4.2 NY 5V, R2 = 7.6 NY 12V, R2 = 21.8 NY ADJ, R2 = 0 Y R1 = OPEN 3A SWITCH + 150 kHz OSC. DRIVER RESET THERMAL LIMIT EMITTER OUTPUT (2) GND (4) + COMP. VREF X 0.95 Copyright (c) 2016, Texas Instruments Incorporated 8.3 Feature Description 8.3.1 Undervoltage Lockout Some applications require the regulator to remain off until the input voltage reaches a predetermined voltage. Figure 26 contains a undervoltage lockout circuit for a buck configuration, while Figure 27 and Figure 28 are for the inverting types (only the circuitry pertaining to the undervoltage lockout is shown). Figure 26 uses a Zener diode to establish the threshold voltage when the switcher begins operating. When the input voltage is less than the Zener voltage, resistors R1 and R2 hold the SHUTDOWN/SOFT-START pin low, keeping the regulator in the shutdown mode. As the input voltage exceeds the Zener voltage, the Zener conducts, pulling the SHUTDOWN/SOFT-START pin high, allowing the regulator to begin switching. The threshold voltage for the undervoltage lockout feature is approximately 1.5 V greater than the Zener voltage. Submit Documentation Feedback Copyright (c) 2001-2016, Texas Instruments Incorporated Product Folder Links: LM2590HV 15 LM2590HV SNVS084C - DECEMBER 2001 - REVISED JULY 2016 www.ti.com Feature Description (continued) VIN +VIN 24V LM2590HV 5.0 1 Z1 12V R2 47 kY CIN 470 F 7 SD /SS 4 GND + R1 20 kY Copyright (c) 2016, Texas Instruments Incorporated Figure 26. Undervoltage Lockout for a Buck Regulator Figure 27 and Figure 28 apply the same feature to an inverting circuit. Figure 27 features a constant threshold voltage for turn on and turn off (Zener voltage plus approximately 1 V). If hysteresis is needed, the circuit in Figure 28 has a turn ON voltage which is different than the turn OFF voltage. The amount of hysteresis is approximately equal to the value of the output voltage. Since the SD/SS pin has an internal 7-V Zener clamp, R2 is needed to limit the current into this pin to approximately 1 mA when Q1 is on. +VIN 24V D1 VIN 1 R1 10 NY CIN 470 F + 7 SD/SS Q1 R3 10 NY R2 33 NY Z1 12V LM2590HV 5.0 4 GND R4 20 NY Q1 - 2N3906 VOUT 5V Copyright (c) 2016, Texas Instruments Incorporated Figure 27. Undervoltage Lockout Without Hysteresis for an Inverting Regulator D1 VIN +VIN 24V Z1 12V CIN 470 F LM2590HV 5.0 1 R2 47 NY 7 SD/SS 4 GND + R1 20 NY VOUT 5V Copyright (c) 2016, Texas Instruments Incorporated Figure 28. Undervoltage Lockout With Hysteresis for an Inverting Regulator 16 Submit Documentation Feedback Copyright (c) 2001-2016, Texas Instruments Incorporated Product Folder Links: LM2590HV LM2590HV www.ti.com SNVS084C - DECEMBER 2001 - REVISED JULY 2016 Feature Description (continued) 8.3.2 SHUTDOWN/SOFT-START This reduction in start up current is useful in situations where the input power source is limited in the amount of current it can deliver. In some applications Soft-start can be used to replace undervoltage lockout or delayed startup functions. If a very slow output voltage ramp is desired, the Soft-start capacitor can be made much larger. Many seconds or even minutes are possible. If only the shutdown feature is needed, the Soft-start capacitor can be eliminated. Figure 29. Typical Circuit Using SHUTDOWN/SOFT-START and Error Flag Features Submit Documentation Feedback Copyright (c) 2001-2016, Texas Instruments Incorporated Product Folder Links: LM2590HV 17 LM2590HV SNVS084C - DECEMBER 2001 - REVISED JULY 2016 www.ti.com Feature Description (continued) Figure 30. Soft-Start, Delay, Error Output 8.4 Device Functional Modes 8.4.1 Shutdown Mode The SD/SS pin provides electrical ON and OFF control for the LM2590HV. When the voltage of this pin is less than 0.6 V, the device is in shutdown mode. The typical standby current in this mode is 90 A. 8.4.2 Active Mode When the SD/SS pin is left floating or pull above 2 V, the device will start switching and the output voltage will rise until it reaches a normal regulation voltage. 18 Submit Documentation Feedback Copyright (c) 2001-2016, Texas Instruments Incorporated Product Folder Links: LM2590HV LM2590HV www.ti.com SNVS084C - DECEMBER 2001 - REVISED JULY 2016 9 Application and Implementation NOTE Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI's customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality. 9.1 Application Information 9.1.1 Feedforward Capacitor, CFF (Adjustable output voltage version only) A feedforward capacitor shown across R2 in Test Circuits is used when the output voltage is greater than 10 V or when COUT has a very low ESR. This capacitor adds lead compensation to the feedback loop and increases the phase margin for better loop stability. If the output voltage ripple is large (>5% of the nominal output voltage), this ripple can be coupled to the feedback pin through the feedforward capacitor and cause the error comparator to trigger the error flag. In this situation, adding a resistor, RFF, in series with the feedforward capacitor, approximately 3 times R1, will attenuate the ripple voltage at the feedback pin. 9.1.2 Input Capacitor, CIN A low-ESR aluminum or tantalum bypass capacitor is needed between the input pin and ground pin. It must be located near the regulator using short leads. This capacitor prevents large voltage transients from appearing at the input, and provides the instantaneous current needed each time the switch turns on. The important parameters for the input capacitor are the voltage rating and the RMS current rating. Because of the relatively high RMS currents flowing in the input capacitor of the buck regulator, this capacitor must be chosen for its RMS current rating rather than its capacitance or voltage ratings, although the capacitance value and voltage rating are directly related to the RMS current rating. The voltage rating of the capacitor and its RMS ripple current capability must never be exceeded. 9.1.3 Output Capacitor, COUT An output capacitor is required to filter the output and provide regulator loop stability. Low-impedance or low-ESR Electrolytic or solid tantalum capacitors designed for switching regulator applications must be used. When selecting an output capacitor, the important capacitor parameters are; the 100-kHz equivalent series resistance (ESR), the RMS ripple current rating, voltage rating, and capacitance value. For the output capacitor, the ESR value is the most important parameter. The ESR must generally not be less than 100 mW or there will be loop instability. If the ESR is too large, efficiency and output voltage ripple are effected. So ESR must be chosen carefully. 9.1.4 Catch Diode Buck regulators require a diode to provide a return path for the inductor current when the switch turns off. This must be a fast diode and must be located close to the LM2590HV using short leads and short printed circuit traces. Because of their very fast switching speed and low forward voltage drop, Schottky diodes provide the best performance, especially in low output voltage applications (5 V and lower). Ultra-fast recovery, or high-efficiency rectifiers are also a good choice, but some types with an abrupt turnoff characteristic may cause instability or EMI problems. Ultra-fast recovery diodes typically have reverse recovery times of 50 ns or less. The diode must be chosen for its average or RMS current rating and maximum voltage rating. The voltage rating of the diode must be greater than the DC input voltage (not the output voltage). Submit Documentation Feedback Copyright (c) 2001-2016, Texas Instruments Incorporated Product Folder Links: LM2590HV 19 LM2590HV SNVS084C - DECEMBER 2001 - REVISED JULY 2016 www.ti.com Application Information (continued) 9.1.5 Inverting Regulator The circuit in Figure 31 converts a positive input voltage to a negative output voltage with a common ground. The circuit operates by bootstrapping the regulator's ground pin to the negative output voltage, then grounding the feedback pin, the regulator senses the inverted output voltage and regulates it. This example uses the LM2590HV 5-V to generate a -5-V output, but other output voltages are possible by selecting other output voltage versions, including the adjustable version. Since this regulator topology can produce an output voltage that is either greater than or less than the input voltage, the maximum output current greatly depends on both the input and output voltage. To determine how much load current is possible before the internal device current limit is reached (and power limiting occurs), the system must be evaluated as a buck-boost configuration rather than as a buck. The peak switch current in Amperes, for such a configuration is given in Equation 1. where * * L is in H f is in Hz (1) The maximum possible load current, ILOAD, is limited by the requirement that IPEAK ICLIM. While checking for this, take ICLIM to be the lowest possible current limit value (minimum across tolerance and temperature is 2.3 A for the LM2590HV). Also to account for inductor tolerances, we must take the minimum value of Inductance for L in the equation above (typically 20% less than the nominal value). Further, the above equation disregards the drop across the Switch and the diode. This is equivalent to assuming 100% efficiency, which is never so. Therefore expect IPEAK to be an additional 10% to 20% higher than calculated from the above equation. Refer to AN-1197 Selecting Inductors for Buck Converters (SNVA038) for examples based on positive to negative configuration. The maximum voltage appearing across the regulator is the absolute sum of the input and output voltage, and this must be limited to a maximum of 60 V. In this example, when converting 20 V to -5 V, the regulator would see 25 V between the input pin and ground pin. The LM2590HV has a maximum input voltage rating of 60 V. An additional diode is required in this regulator configuration. Diode D1 is used to isolate input voltage ripple or noise from coupling through the CIN capacitor to the output, under light or no load conditions. Also, this diode isolation changes the topology to closely resemble a buck configuration thus providing good closed loop stability. A Schottky diode is recommended for low input voltages, (because of its lower voltage drop) but for higher input voltages, a IN5400 diode could be used. Because of differences in the operation of the inverting regulator, the standard design procedure is not used to select the inductor value. In the majority of designs, a 33-H, 4-A inductor is the best choice. Capacitor selection can also be narrowed down to just a few values. This type of inverting regulator can require relatively large amounts of input current when starting up, even with light loads. Input currents as high as the LM2590HV current limit (approximately 4 A) are needed for 2 ms or more, until the output reaches its nominal output voltage. The actual time depends on the output voltage and the size of the output capacitor. Input power sources that are current limited or sources that can not deliver these currents without getting loaded down, may not work correctly. Because of the relatively high startup currents required by the inverting topology, the soft-start feature shown in Figure 31 is recommended. Also shown in Figure 31 are several shutdown methods for the inverting configuration. With the inverting configuration, some level shifting is required, because the ground pin of the regulator is no longer at ground, but is now at the negative output voltage. The shutdown methods shown accept ground referenced shutdown signals. 20 Submit Documentation Feedback Copyright (c) 2001-2016, Texas Instruments Incorporated Product Folder Links: LM2590HV LM2590HV www.ti.com SNVS084C - DECEMBER 2001 - REVISED JULY 2016 Application Information (continued) Figure 31. Inverting, -5-V Regulator With Shutdown and Soft-Start 9.2 Typical Application +VIN +12V Unregulated DC Input Feedback 1 10 NY Error Flag 6 LM2590HV 5.0 Flag 3 Shutdown/Soft - start 7 SD /SS + CIN 330 F 5 Delay CSS 0.1 F 33 H Output 2 4 Gnd + D1 1N5824 +5.0V Regulated Output COUT 220 F 1A Load CDELAY 0.1 F Copyright (c) 2016, Texas Instruments Incorporated Figure 32. LM2590HV 5-V Example Application 9.2.1 Design Requirements Table 1 lists the example values for this typical application. Table 1. Design Parameters PARAMETER VALUE Regulated output voltage (3.3 V, 5 V, or adjustable), VOUT 5V Maximum input voltage, VIN(max) 24 V Maximum load current, ILOAD(max) 1A Switching frequency, F Fixed at a nominal 150 kHz Submit Documentation Feedback Copyright (c) 2001-2016, Texas Instruments Incorporated Product Folder Links: LM2590HV 21 LM2590HV SNVS084C - DECEMBER 2001 - REVISED JULY 2016 www.ti.com 9.2.2 Detailed Design Procedure 9.2.2.1 Inductor Selection Procedure For a quick-start, refer to the nomographs provided in Figure 33 to Figure 35. To widen the choices to a more general selection of available inductors, the nomographs provide the required inductance and also the energy in the core expressed in microjoules (J), as an alternative to just prescribing custom parts. The following points need to be highlighted: 1. The energy values shown on the nomographs apply to steady operation at the corresponding x-coordinate (rated maximum load current). However under start-up, without soft-start, or a short-circuit on the output, the current in the inductor will momentarily/repetitively hit the current limit ICLIM of the device, and this current could be much higher than the rated load, ILOAD. This represents an overload situation, and can cause the Inductor to saturate (if it has been designed only to handle the energy of steady operation). However most types of core structures used for such applications have a large inherent air gap (for example powdered iron types or ferrite rod inductors), and so the inductance does not fall off too sharply under an overload. The device is usually able to protect itself by not allowing the current to ever exceed ICLIM. But if the DC input voltage to the regulator is over 40 V, the current can slew up so fast under core saturation, that the device may not be able to act fast enough to restrict the current. The current can then rise without limit till destruction of the device takes place. Therefore to ensure reliability, TI recommends that if the DC input voltage exceeds 40 V the inductor must always be sized to handle an instantaneous current equal to ICLIM without saturating, irrespective of the type of core structure or material. 2. Use Equation 2 to calculate the energy under steady operation. where * * L is in H IPEAK is the peak of the inductor current waveform with the regulator delivering ILOAD (2) These are the energy values shown in the nomographs. See Example 1. 3. The energy under overload is Equation 3. (3) If VIN > 40 V, the inductor must be sized to handle eCLIM instead of the steady energy values. The worst case ICLIM for the LM2590HV is 3 A. The energy rating depends on the inductance. See Example 2. 4. The nomographs were generated by allowing a greater amount of percentage current ripple in the Inductor as the maximum rated load decreases (see Figure 36). This was done to permit the use of smaller inductors at light loads. However, Figure 36 shows only the median value of the current ripple. In reality there may be a great spread around this because the nomographs approximate the exact calculated inductance to standard available values. Refer to AN-1197 Selecting Inductors for Buck Converters (SNVA038) for detailed calculations if a certain maximum inductor current ripple is required for various possible reasons. Also consider the rather wide tolerance on the nominal inductance of commercial inductors. 5. Figure 35 shows the inductor selection curves for the Adjustable version. The y-axis is Et, in Vsecs. It is the applied volts across the inductor during the ON time of the switch (VIN-VSAT-VOUT) multiplied by the time for which the switch is on in secs. See Example 3. 9.2.2.1.1 Example 1: VIN 40 V, 5-V Version, VIN = 24 V, Output = 5 V at 1 A 1. A first pass inductor selection is based upon Inductance and rated max load current. We choose an inductor with the Inductance value indicated by the nomograph (see Figure 34) and a current rating equal to the maximum load current. We therefore quick-select a 68-H, 1-A inductor (designed for 150 kHz operation) for this application 2. We must confirm that it is rated to handle 50 J (see Figure 34) by either estimating the peak current or by a detailed calculation as shown in AN-1197 Selecting Inductors for Buck Converters (SNVA038), and also that the losses are acceptable. 9.2.2.1.2 Example 2: VIN > 40 V, 5-V Version, VIN = 48 V, Output = 5 V at 1.5 A 1. A first pass inductor selection is based upon Inductance and the switch current limit. We choose an inductor 22 Submit Documentation Feedback Copyright (c) 2001-2016, Texas Instruments Incorporated Product Folder Links: LM2590HV LM2590HV www.ti.com SNVS084C - DECEMBER 2001 - REVISED JULY 2016 with the Inductance value indicated by the nomograph (see Figure 34) and a current rating equal to ICLIM. We therefore quick-select a 68-H, 4-A inductor (designed for 150 kHz operation) for this application. 2. We must confirm that it is rated to handle eCLIM by the procedure shown in AN-1197 Selecting Inductors for Buck Converters (SNVA038) and that the losses are acceptable. Here eCLIM is Equation 4. (4) 9.2.2.1.3 Example 3: VIN 40 V, Adjustable Version, VIN = 20 V, Output = 10 V at 2 A 1. Since input voltage is less than 40 V, a first pass inductor selection is based upon Inductance and rated max load current. We choose an inductor with the Inductance value indicated by the nomograph Figure 35 and a current rating equal to the maximum load. But we first need to calculate Et for the given application. The Duty cycle is Equation 5. where * * VD is the drop across the catch diode (0.5 V for a Schottky) VSAT the drop across the switch (1.5 V) (5) So this yields Equation 6. (6) 2. The switch ON time is calculated with Equation 7. where * f is the switching frequency in Hz (7) So this yields Equation 8. (8) 3. Therefore, looking at Figure 33, quick-select a 47-H, 2-A inductor (designed for 150 kHz operation) for this application. 4. Confirm that it is rated to handle 200 J (see Figure 35) by the procedure shown in AN-1197 Selecting Inductors for Buck Converters (SNVA038) and that the losses are acceptable. (If the DC Input voltage had been greater than 40 V we would need to consider eCLIM as in Example 2). This completes the simplified inductor selection procedure. For more general applications and better optimization, refer to AN-1197 Selecting Inductors for Buck Converters (SNVA038). Submit Documentation Feedback Copyright (c) 2001-2016, Texas Instruments Incorporated Product Folder Links: LM2590HV 23 LM2590HV SNVS084C - DECEMBER 2001 - REVISED JULY 2016 www.ti.com 9.2.3 Application Curves For continuous mode operation 24 Figure 33. LM2590HV 3.3-V Figure 34. LM2590HV 5-V Figure 35. LM2590HV Adjustable Voltage Figure 36. Current Ripple Ratio Submit Documentation Feedback Copyright (c) 2001-2016, Texas Instruments Incorporated Product Folder Links: LM2590HV LM2590HV www.ti.com SNVS084C - DECEMBER 2001 - REVISED JULY 2016 10 Power Supply Recommendations The LM2590HV is designed to operate from an input voltage supply up to 60 V. This input supply must be well regulated and able to withstand maximum input current and maintain a stable voltage. 11 Layout 11.1 Layout Guidelines As in any switching regulator, layout is very important. Rapidly switching currents associated with wiring inductance can generate voltage transients which can cause problems. For minimal inductance and ground loops, with reference to Test Circuits, the wires indicated by heavy lines must be wide printed circuit traces and must be kept as short as possible. For best results, external components must be located as close to the switcher lC as possible using ground plane construction or single point grounding. If open-core inductors are used, special care must be taken as to the location and positioning of this type of inductor. Allowing the inductor flux to intersect sensitive feedback, lC groundpath and COUT wiring can cause problems. When using the adjustable version, take special care as to the location of the feedback resistors and the associated wiring. Physically locate both resistors near the IC, and route the wiring away from the inductor, especially an open-core type of inductor. 11.2 Layout Examples CIN = 470-F, 50-V aluminum electrolytic Panasonic HFQ Series COUT = 330-F, 35-V aluminum electrolytic Panasonic HFQ Series D1 = 5-A, 40-V Schottky rectifier, 1N5825 L1 = 47-H, L39 Renco through-hole RPULL UP = 10k CDELAY = 0.1 F CSD/SS = 0.1 F Thermalloy heat sink #7020 Figure 37. Typical Through-Hole PCB Layout, Fixed Output (1x Size), Double-Sided Submit Documentation Feedback Copyright (c) 2001-2016, Texas Instruments Incorporated Product Folder Links: LM2590HV 25 LM2590HV SNVS084C - DECEMBER 2001 - REVISED JULY 2016 www.ti.com Layout Examples (continued) CIN = 470-F, 50-V aluminum electrolytic Panasonic HFQ Series COUT = 220-F, 35-V aluminum electrolytic Panasonic HFQ Series D1 = 5-A, 40-V Schottky Rectifier, 1N5825 L1 = 47-H, L39 Renco, through-hole R1 = 1 k, 1% R2 = Use formula in Detailed Design Procedure CFF = See Feedforward Capacitor, CFF RFF = See Feedforward Capacitor, CFF RPULL UP = 10k CDELAY = 0.1 F CSD/SS= 0.1 F Thermalloy heat sink #7020 Figure 38. Typical Through-Hole PCB Layout, Adjustable Output (1x Size), Double-Sided 11.3 Thermal Considerations The LM2590HV is available in two packages, a 5-pin TO-220 (T) and a 5-pin surface-mount TO-263 (S). The TO-220 package needs a heat sink under most conditions. The size of the heatsink depends on the input voltage, the output voltage, the load current and the ambient temperature. Higher ambient temperatures require more heat sinking. The TO-263 surface-mount package tab is designed to be soldered to the copper on a printed circuit board. The copper and the board are the heat sink for this package and the other heat producing components, such as the catch diode and inductor. The PCB copper area that the package is soldered to must be at least 0.4 in2, and ideally must have 2 or more square inches of 2 oz. (0.0028) in. copper. Additional copper area improves the thermal characteristics, but with copper areas greater than approximately 6 in2, only small improvements in heat dissipation are realized. If further thermal improvements are needed, double-sided, multilayer PC board with large copper areas or airflow are recommended. The curves shown in Figure 39 show the LM2590HV (TO-263 package) junction temperature rise above ambient temperature with a 2-A load for various input and output voltages. This data was taken with the circuit operating as a buck switching regulator with all components mounted on a PCB to simulate the junction temperature under actual operating conditions. This curve can be used for a quick check for the approximate junction temperature for various conditions, but be aware that there are many factors that can affect the junction temperature. When load currents higher than 2 A 26 Submit Documentation Feedback Copyright (c) 2001-2016, Texas Instruments Incorporated Product Folder Links: LM2590HV LM2590HV www.ti.com SNVS084C - DECEMBER 2001 - REVISED JULY 2016 Thermal Considerations (continued) are used, double-sided or multilayer boards with large copper areas or airflow might be needed, especially for high ambient temperatures and high output voltages. For the best thermal performance, wide copper traces and generous amounts of printed circuit board copper must be used in the board layout. One exception to this is the output (switch) pin, which must not have large areas of copper. Large areas of copper provide the best transfer of heat (lower thermal resistance) to the surrounding air, and moving air lowers the thermal resistance even further. Package thermal resistance and junction temperature rise numbers are all approximate, and there are many factors that will affect these numbers. Some of these factors include board size, shape, thickness, position, location, and even board temperature. Other factors are, trace width, total printed circuit copper area, copper thickness, single- or double-sided, multilayer board and the amount of solder on the board. The effectiveness of the PCB to dissipate heat also depends on the size, quantity and spacing of other components on the board, as well as whether the surrounding air is still or moving. Furthermore, some of these components such as the catch diode will add heat to the PCB and the heat can vary as the input voltage changes. For the inductor, depending on the physical size, type of core material and the DC resistance, it could either act as a heat sink taking heat away from the board, or it could add heat to the board. Figure 39. Junction Temperature Rise, TO-263 Submit Documentation Feedback Copyright (c) 2001-2016, Texas Instruments Incorporated Product Folder Links: LM2590HV 27 LM2590HV SNVS084C - DECEMBER 2001 - REVISED JULY 2016 www.ti.com 12 Device and Documentation Support 12.1 Documentation Support 12.1.1 Related Documentation For related documentation see the following: AN-1197 Selecting Inductors for Buck Converters (SNVA038) 12.2 Receiving Notification of Documentation Updates To receive notification of documentation updates, navigate to the device product folder on ti.com. In the upper right corner, click on Alert me to register and receive a weekly digest of any product information that has changed. For change details, review the revision history included in any revised document. 12.3 Community Resources The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of Use. TI E2ETM Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help solve problems with fellow engineers. Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and contact information for technical support. 12.4 Trademarks E2E is a trademark of Texas Instruments. All other trademarks are the property of their respective owners. 12.5 Electrostatic Discharge Caution These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. 12.6 Glossary SLYZ022 -- TI Glossary. This glossary lists and explains terms, acronyms, and definitions. 13 Mechanical, Packaging, and Orderable Information The following pages include mechanical, packaging, and orderable information. This information is the most current data available for the designated devices. This data is subject to change without notice and revision of this document. For browser-based versions of this data sheet, refer to the left-hand navigation. 28 Submit Documentation Feedback Copyright (c) 2001-2016, Texas Instruments Incorporated Product Folder Links: LM2590HV PACKAGE OPTION ADDENDUM www.ti.com 17-Mar-2017 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan Lead/Ball Finish MSL Peak Temp (2) (6) (3) Op Temp (C) Device Marking (4/5) LM2590HVS-3.3/NOPB ACTIVE DDPAK/ TO-263 KTW 7 45 Pb-Free (RoHS Exempt) CU SN Level-3-245C-168 HR -40 to 125 LM2590HVS -3.3 P+ LM2590HVS-5.0/NOPB ACTIVE DDPAK/ TO-263 KTW 7 45 Pb-Free (RoHS Exempt) CU SN Level-3-245C-168 HR -40 to 125 LM2590HVS -5.0 P+ LM2590HVS-ADJ/NOPB ACTIVE DDPAK/ TO-263 KTW 7 45 Pb-Free (RoHS Exempt) CU SN Level-3-245C-168 HR -40 to 125 LM2590HVS -ADJ P+ LM2590HVSX-3.3/NOPB ACTIVE DDPAK/ TO-263 KTW 7 500 Pb-Free (RoHS Exempt) CU SN Level-3-245C-168 HR -40 to 125 LM2590HVS -3.3 P+ LM2590HVSX-5.0/NOPB ACTIVE DDPAK/ TO-263 KTW 7 500 Pb-Free (RoHS Exempt) CU SN Level-3-245C-168 HR -40 to 125 LM2590HVS -5.0 P+ LM2590HVSX-ADJ/NOPB ACTIVE DDPAK/ TO-263 KTW 7 500 Pb-Free (RoHS Exempt) CU SN Level-3-245C-168 HR -40 to 125 LM2590HVS -ADJ P+ LM2590HVT-5.0/NOPB ACTIVE TO-220 NDZ 7 45 Green (RoHS & no Sb/Br) CU SN Level-1-NA-UNLIM -40 to 125 LM2590HVT -5.0 P+ LM2590HVT-ADJ/NOPB ACTIVE TO-220 NDZ 7 45 Green (RoHS & no Sb/Br) CU SN Level-1-NA-UNLIM -40 to 125 LM2590HVT -ADJ P+ (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Addendum-Page 1 Samples PACKAGE OPTION ADDENDUM www.ti.com (4) 17-Mar-2017 There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device. (6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish value exceeds the maximum column width. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. Addendum-Page 2 PACKAGE MATERIALS INFORMATION www.ti.com 27-Jan-2016 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant LM2590HVSX-3.3/NOPB DDPAK/ TO-263 KTW 7 500 330.0 24.4 10.75 14.85 5.0 16.0 24.0 Q2 LM2590HVSX-5.0/NOPB DDPAK/ TO-263 KTW 7 500 330.0 24.4 10.75 14.85 5.0 16.0 24.0 Q2 LM2590HVSX-ADJ/NOPB DDPAK/ TO-263 KTW 7 500 330.0 24.4 10.75 14.85 5.0 16.0 24.0 Q2 Pack Materials-Page 1 PACKAGE MATERIALS INFORMATION www.ti.com 27-Jan-2016 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LM2590HVSX-3.3/NOPB DDPAK/TO-263 KTW 7 500 367.0 367.0 45.0 LM2590HVSX-5.0/NOPB DDPAK/TO-263 KTW 7 500 367.0 367.0 45.0 LM2590HVSX-ADJ/NOPB DDPAK/TO-263 KTW 7 500 367.0 367.0 45.0 Pack Materials-Page 2 MECHANICAL DATA NDZ0007B TA07B (Rev E) www.ti.com MECHANICAL DATA KTW0007B TS7B (Rev E) BOTTOM SIDE OF PACKAGE www.ti.com IMPORTANT NOTICE Texas Instruments Incorporated (TI) reserves the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. TI's published terms of sale for semiconductor products (http://www.ti.com/sc/docs/stdterms.htm) apply to the sale of packaged integrated circuit products that TI has qualified and released to market. Additional terms may apply to the use or sale of other types of TI products and services. Reproduction of significant portions of TI information in TI data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices. TI is not responsible or liable for such reproduced documentation. Information of third parties may be subject to additional restrictions. Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business practice. TI is not responsible or liable for any such statements. Buyers and others who are developing systems that incorporate TI products (collectively, "Designers") understand and agree that Designers remain responsible for using their independent analysis, evaluation and judgment in designing their applications and that Designers have full and exclusive responsibility to assure the safety of Designers' applications and compliance of their applications (and of all TI products used in or for Designers' applications) with all applicable regulations, laws and other applicable requirements. Designer represents that, with respect to their applications, Designer has all the necessary expertise to create and implement safeguards that (1) anticipate dangerous consequences of failures, (2) monitor failures and their consequences, and (3) lessen the likelihood of failures that might cause harm and take appropriate actions. Designer agrees that prior to using or distributing any applications that include TI products, Designer will thoroughly test such applications and the functionality of such TI products as used in such applications. TI's provision of technical, application or other design advice, quality characterization, reliability data or other services or information, including, but not limited to, reference designs and materials relating to evaluation modules, (collectively, "TI Resources") are intended to assist designers who are developing applications that incorporate TI products; by downloading, accessing or using TI Resources in any way, Designer (individually or, if Designer is acting on behalf of a company, Designer's company) agrees to use any particular TI Resource solely for this purpose and subject to the terms of this Notice. TI's provision of TI Resources does not expand or otherwise alter TI's applicable published warranties or warranty disclaimers for TI products, and no additional obligations or liabilities arise from TI providing such TI Resources. TI reserves the right to make corrections, enhancements, improvements and other changes to its TI Resources. TI has not conducted any testing other than that specifically described in the published documentation for a particular TI Resource. Designer is authorized to use, copy and modify any individual TI Resource only in connection with the development of applications that include the TI product(s) identified in such TI Resource. NO OTHER LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE TO ANY OTHER TI INTELLECTUAL PROPERTY RIGHT, AND NO LICENSE TO ANY TECHNOLOGY OR INTELLECTUAL PROPERTY RIGHT OF TI OR ANY THIRD PARTY IS GRANTED HEREIN, including but not limited to any patent right, copyright, mask work right, or other intellectual property right relating to any combination, machine, or process in which TI products or services are used. Information regarding or referencing third-party products or services does not constitute a license to use such products or services, or a warranty or endorsement thereof. Use of TI Resources may require a license from a third party under the patents or other intellectual property of the third party, or a license from TI under the patents or other intellectual property of TI. TI RESOURCES ARE PROVIDED "AS IS" AND WITH ALL FAULTS. TI DISCLAIMS ALL OTHER WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED, REGARDING RESOURCES OR USE THEREOF, INCLUDING BUT NOT LIMITED TO ACCURACY OR COMPLETENESS, TITLE, ANY EPIDEMIC FAILURE WARRANTY AND ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT OF ANY THIRD PARTY INTELLECTUAL PROPERTY RIGHTS. TI SHALL NOT BE LIABLE FOR AND SHALL NOT DEFEND OR INDEMNIFY DESIGNER AGAINST ANY CLAIM, INCLUDING BUT NOT LIMITED TO ANY INFRINGEMENT CLAIM THAT RELATES TO OR IS BASED ON ANY COMBINATION OF PRODUCTS EVEN IF DESCRIBED IN TI RESOURCES OR OTHERWISE. IN NO EVENT SHALL TI BE LIABLE FOR ANY ACTUAL, DIRECT, SPECIAL, COLLATERAL, INDIRECT, PUNITIVE, INCIDENTAL, CONSEQUENTIAL OR EXEMPLARY DAMAGES IN CONNECTION WITH OR ARISING OUT OF TI RESOURCES OR USE THEREOF, AND REGARDLESS OF WHETHER TI HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Unless TI has explicitly designated an individual product as meeting the requirements of a particular industry standard (e.g., ISO/TS 16949 and ISO 26262), TI is not responsible for any failure to meet such industry standard requirements. Where TI specifically promotes products as facilitating functional safety or as compliant with industry functional safety standards, such products are intended to help enable customers to design and create their own applications that meet applicable functional safety standards and requirements. Using products in an application does not by itself establish any safety features in the application. Designers must ensure compliance with safety-related requirements and standards applicable to their applications. Designer may not use any TI products in life-critical medical equipment unless authorized officers of the parties have executed a special contract specifically governing such use. Life-critical medical equipment is medical equipment where failure of such equipment would cause serious bodily injury or death (e.g., life support, pacemakers, defibrillators, heart pumps, neurostimulators, and implantables). Such equipment includes, without limitation, all medical devices identified by the U.S. Food and Drug Administration as Class III devices and equivalent classifications outside the U.S. TI may expressly designate certain products as completing a particular qualification (e.g., Q100, Military Grade, or Enhanced Product). Designers agree that it has the necessary expertise to select the product with the appropriate qualification designation for their applications and that proper product selection is at Designers' own risk. Designers are solely responsible for compliance with all legal and regulatory requirements in connection with such selection. Designer will fully indemnify TI and its representatives against any damages, costs, losses, and/or liabilities arising out of Designer's noncompliance with the terms and provisions of this Notice. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright (c) 2017, Texas Instruments Incorporated Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Texas Instruments: LM2590HVS-3.3 LM2590HVS-3.3/NOPB LM2590HVS-5.0 LM2590HVS-5.0/NOPB LM2590HVS-ADJ LM2590HVSADJ/NOPB LM2590HVSX-3.3 LM2590HVSX-3.3/NOPB LM2590HVSX-5.0 LM2590HVSX-5.0/NOPB LM2590HVSXADJ/NOPB LM2590HVT-3.3 LM2590HVT-3.3/NOPB LM2590HVT-5.0 LM2590HVT-5.0/NOPB LM2590HVT-ADJ LM2590HVT-ADJ/NOPB