CPC1560 60V, 300mA, High Speed Normally Open Relay with Integrated Current Limit INTEGRATED CIRCUITS DIVISION Description Parameter Rating Units Load Voltage Load Current 60 VP AC/DC 300 mArms/mADC 600 5.6 1.1 mADC DC-Only On-Resistance (max) Input Control Current mA Features * Fast Turn-On: 100s max with recommended values of CEXT 250s max with no CEXT * Active Current Limiting * Thermal Shutdown * 1.1mA Input Control Current * Linear AC or DC Operation * High Surge Capability * Low Power Consumption * Clean, Bounce-Free Switching * Surface Mount Version Available * Tape & Reel Packaging Available Turn-on is minimized with the use of an optional external storage capacitor that provides the necessary charge required by the internal switching MOSFETs. The device charges this capacitor through bootstrap diodes from the load voltage thereby alleviating the need for an additional power supply. A fast, but slightly slower turn-on is available without the external charge storage capacitor. The CPC1560 incorporates current limiting and thermal shutdown circuitry for improved survivability in harsh environments and is designed to pass regulatory voltage surge requirements when provided with appropriate over-voltage protection. Designed specifically for environmentally demanding AC and DC applications where printed circuit board space is at a premium and additional power supplies are not available, the CPC1560 is an ideal solution. Applications * * * * * The CPC1560 is a Single Pole, Normally Open (1-Form A) optically isolated MOSFET switch that provides fast turn-on of loads up to 600mADC in the DC-Only configuration or 300mArms in the AC/DC configuration; active current-limiting circuitry; and 3750Vrms of input to output isolation. Security Instrumentation Battery Powered Systems Transportation, Railroad Controls 12V, 24V Systems Ordering Information Approvals * UL 508 Approved Component: File # E69938 Part Description CPC1560G CPC1560GS CPC1560GSTR 8-Pin, DIP Through-Hole (50/Tube) 8-Pin, Surface Mount (50/Tube) 8-Pin, Surface Mount (1000/Reel) Figure 1. CPC1560 Block Diagram 8 NC 1 7 2 LED+ LED- NC DS-CPC1560-R02 C+ OUTPUT Current Limit Control 3 6 4 5 www.ixysic.com OUTPUT C- 1 INTEGRATED CIRCUITS DIVISION CPC1560 1. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 Package Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 Pin Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4 ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 Recommended Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.6 Typical Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.6.1 DC-Only Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.7 General Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.8 Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.9 Switching Speed Test Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.10 Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3 3 3 3 4 4 4 5 5 5 6 2. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3. Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4. Device Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4.1 LED Resistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4.2 Storage Capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5. Operational Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5.1 Operating Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5.1.1 Duty Cycle/Power Dissipation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5.1.2 Temperature Effects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5.1.3 Elements of Operating Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5.2 Switching Losses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5.2.1 Effects of Ambient Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5.3 Current Limit and Thermal Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5.3.1 Current Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5.3.2 Thermal Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5.4 dV/dt Fault Tolerance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5.5 Power Derating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5.6 Rise and Fall Times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 5.7 Over-Voltage Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 5.7.1 Stored Energy in the Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 5.7.2 Protection Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 6. Manufacturing Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.1 Moisture Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.2 ESD Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.3 Soldering Profile. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.4 Board Wash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5 Mechanical Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 www.ixysic.com 13 13 13 13 13 14 R02 INTEGRATED CIRCUITS DIVISION CPC1560 1. Specifications 1.1 Package Pinout 1.2 Pin Description Pin# NC 1 8 C+ LED + 2 7 OUTPUT LED - 3 6 OUTPUT NC 4 5 C- Name Description 1 NC 2 LED + Positive input to LED 3 LED - Negative input to LED 4 NC Not connected, no internal connection C- External Capacitor, Negative Terminal 5 Not connected, no internal connection 6 OUTPUT Switch Output 7 OUTPUT Switch Output 8 C+ External Capacitor, Positive Terminal 1.3 Absolute Maximum Ratings Parameter Rating Units Blocking Voltage (VL) 60 VP Reverse Input Voltage 5 V Continuous 50 mA Peak (10ms) 1 A 10 mA Input LED Current Input Control Current 1 Peak Turn-On Energy Dissipation AC/DC Configuration (85C) 0.67 DC-Only Configuration (85C) 1.34 mJ Absolute maximum ratings are stress ratings. Stresses in excess of these ratings can cause permanent damage to the device. Functional operation of the device at conditions beyond those indicated in the operational sections of this data sheet is not implied. Typical values are characteristic of the device at +25C, and are the result of engineering evaluations. They are provided for information purposes only, and are not part of the manufacturing testing requirements 1.4 ESD Rating dV/dt Fault Tolerance V/s ESD Rating (Human Body Model) 150 mW 1000 V Output Power Dissipation 3 787 mW Total Power Dissipation 800 mW Isolation Voltage (Input to Output) 3750 Vrms Operating Temperature -40 to +85 C Storage Temperature -40 to +125 C AC/DC Configuration 160 DC-Only Configuration 80 Input Power Dissipation 2 1 Failure to comply will inhibit thermal shutdown. Derate Input Power linearly by 1.33mW/C. 3 Derate Output Power linearly by 7.5mW/C. 2 Absolute maximum electrical ratings are at 25C, unless otherwise specified. R02 www.ixysic.com 3 CPC1560 INTEGRATED CIRCUITS DIVISION 1.5 Recommended Operating Conditions Parameter Symbol Load Current, Continuous AC/DC Configuration Max Units - 300 mArms / mADC - 600 mADC 10 mA IL DC-Only Configuration Input Control Current Min 1 2 Load Voltage External Storage Capacitor Load Inductance 3 AC/DC Configuration DC-Only Configuration Operating Temperature IF 2.5 VL 10 - V CEXT 2 6 nF LLOAD,AC - 3.0 LLOAD,DC - 1.75 TA -40 +85 mH C 1 Input control current must not exceed the maximum recommended value. Failure to comply may inhibit the thermal shutdown mechanism resulting in permanent damage to the device. 2 Required only when using the optional external storage capacitor, C EXT. 3 Maximum load inductance corresponds to a maximum load capacitance. If a TVS or other protection method is used, then no maximum load inductance applies. 1.6 Typical Configurations 1.6.1 AC/DC Application +V 7 2 6 8 +/- Supply -/+ Supply C+ 3 5 Control Logic ZLOAD +/VL -/+ C- 1.6.2 DC-Only Application +V 7 2 + 6 8 C+ 3 Control Logic 4 + Supply VL - 5 ZLOAD - Supply C- www.ixysic.com R02 INTEGRATED CIRCUITS DIVISION CPC1560 1.7 General Conditions Unless otherwise specified, minimum and maximum values are guaranteed by production testing at 25C only. Typical values are characteristic of the device at 25C and are the result of engineering evaluations. They are provided for informational purposes only and are not part of the manufacturing testing requirements. Operating temperature range: TA= -40C to +85C 1.8 Electrical Specifications Parameter Conditions Symbol Min Typ Max Units 470 614 900 mAP 1.0 1.2 1.5 A 3.9 1.09 - 5.6 1.4 1 Output Characteristics @ 25C Current Limit AC/DC Configuration IF=5mA, VL=4V, t=2ms DC-Only Configuration ILMT IF=5mA, VL=4V, t=2ms 1 On-Resistance AC/DC Configuration DC-Only Configuration Off-State Leakage Current IF=5mA, IL=100mA RON VL=60V ILEAK - CEXT=1nF ton - 18 100 No CEXT ton - 112 250 IF=0mA, VL=1.0V toff - 88 400 CO - 220 - pF - TSD - 130 - C Input Control Current to Activate IL=100mA IF - - 1.1 Input Control Current to Deactivate IL=100mA IF 0.1 0.43 - IF=5mA VF 0.9 1.22 1.50 V - CI/O - 3 - pF - RJA - 114 - C/W A IF=5mA, IL=100mA, VL=10V Switching Speeds Turn-On Turn-On, No Capacitor Turn-Off Output Capacitance, AC/DC Configuration Thermal Shutdown s Input Characteristics @ 25C LED Forward Voltage mA Common Characteristics @ 25C Input to Output Capacitance Thermal Characteristics Thermal Resistance, Junction-to-Ambient 1 Measurement taken within 1 second of on-time. 1.9 Switching Speed Test Circuits With capacitor 8 IF No Capacitor +/- Supply 8 C+ 2 ZLOAD 5 +/- Supply IF Pulse Width=5ms 2 5 ZLOAD IF C7 3 6 R02 VL 7 +/VL -/+ 3 -/+ Supply 6 +/VL -/+ www.ixysic.com 90% 10% -/+ Supply t on t off 5 CPC1560 INTEGRATED CIRCUITS DIVISION 1.10 Performance Data Typical IF for Switch Operation vs. Temperature (IL=100mA) LED Forward Voltage vs. Temperature 1.40 1.40 1.35 1.35 IF=10mA IF=5mA IF=2.5mA 1.25 IF (mA) 1.25 0.70 1.30 IF (mA) 1.30 VF (V) 0.75 1.20 1.15 1.20 1.10 1.15 -40 -20 0 20 40 60 Temperature (C) 80 -20 0 20 40 60 Temperature (C) 80 0.50 -40 100 Typical On-Resistance vs. Temperature (DC-Only Configuration) (IF=5mA, IL=100mA) 200 100 1.2 1.1 0.2 0.3 VL (VDC) 0.4 0.5 -40 Load Current vs. Load Voltage (AC/DC Configuration) (IF=5mA) 12 On-Resistance () 100 0 -100 0 20 40 60 Temperature (C) 80 4 0 -40 -20 0 20 40 60 Temperature (C) 80 IF=5mA 250 IF=2.5mA 200 150 -40 100 850 1.4 800 1.3 750 IF=5mA IF=2.5mA 600 100 AC Negative Current Limit vs. Temperature (IF=5mA) 600 550 500 0.8 -40 450 -40 100 80 650 500 80 20 40 60 Temperature (C) 700 0.9 20 40 60 Temperature (C) 0 750 550 0 -20 800 IF=10mA ILIM- (mA) ILIM+ (mA) 900 -20 100 IF=10mA 850 1.0 80 300 900 1.1 20 40 60 Temperature (C) 350 1.5 650 0 400 AC Positive Current Limit vs. Temperature 700 -20 Maximum Allowed Load Current vs. Temperature (AC/DC Configuration) Typical On-Resistance vs. Temperature (AC/DC Configuration) (IF=5mA, IL=100mA) 6 -300 -1.0 -0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 VL (VAC) 1.2 IF=2.5mA 0.7 0.5 -40 100 8 2 1.6 -20 10 -200 DC Current Limit vs. Temperature (IF=5mA) IF=5mA 0.8 0.6 0.6 200 0.9 1.0 IL Max (mArms, mADC) 300 0.1 100 IF=10mA 1.3 0.8 0.0 80 1.0 0.9 0 20 40 60 Temperature (C) 1.4 IL Max (A) On-Resistance () 300 0 1.1 1.5 400 -20 Maximum Allowed Load Current vs. Temperature (DC-Only Configuration) 1.6 500 IL (mA) 0.60 0.55 1.00 -40 100 Load Current vs. Load Voltage (DC-Only Configuration) (IF=5mA) 600 IL (mA) 0.65 1.05 1.10 ILIM (ADC) Typical IF for Switch Dropout vs. Temperature (IL=100mA) 450 -20 0 20 40 60 Temperature (C) 80 100 -40 -20 0 20 40 60 Temperature (C) 80 100 The Performance data shown in the graphs above is typical of device performance. For guaranteed parameters not indicated in the written specifications, please contact our application department. 6 www.ixysic.com R02 INTEGRATED CIRCUITS DIVISION CPC1560 Maximum Allowed Energy Dissipation During tRISE (DC-Only Configuration) Maximum Allowed Energy Dissipation During tFALL (DC-Only Configuration) 4.0 0.28 0.27 3.5 Energy (mJ) Energy (mJ) 0.26 0.25 0.24 0.23 3.0 2.5 2.0 0.22 1.5 0.21 0.20 -40 -20 0 20 40 60 Temperature (C) 80 1.0 -40 100 0.12 2.0 0.11 1.8 0.10 1.6 Energy (mJ) Energy (mJ) 0 20 40 60 Temperature (C) 80 100 Maximum Allowed Energy Dissipation During tFALL (AC/DC Configuration) Maximum Allowed Energy Dissipation During tRISE (AC/DC Configuration) 0.09 0.08 0.07 0.06 0.05 -40 -20 1.4 1.2 1.0 0.8 -20 0 20 40 60 80 100 0.6 -40 -20 0 Temperature (C) 20 40 60 Temperature (C) 80 100 Blocking Voltage vs. Temperature Blocking Voltage (VP) 100 90 80 70 60 50 -40 -20 0 20 40 60 Temperature (C) 80 100 The Performance data shown in the graphs above is typical of device performance. For guaranteed parameters not indicated in the written specifications, please contact our application department. R02 www.ixysic.com 7 CPC1560 INTEGRATED CIRCUITS DIVISION 2. Introduction The CPC1560 is an optically coupled Solid State Relay (SSR) that is self-biased from the load supply. An optional external charge storage capacitor is used to speed up SSR turn-on. The CPC1560 also incorporates current limiting and a thermal shutdown feature in the output circuitry, making the device ideal for use in harsh conditions. 3. Functional Description Internally, the device is composed of an LED, a photovoltaic array with control circuitry, and two MOSFET output switches. Input current to the LED is the signal to turn-on the SSR's output MOSFET switches. The LED illuminates the photovoltaics, which provide current to the gates of the output MOSFETs, causing them to conduct. When utilizing CEXT, the charge delivered to the MOSFET gates initially includes the charge stored in the external capacitor, causing the SSR to conduct more quickly than if only the photovoltaic current were used. When the Load Voltage (VL) is first applied to the inactive outputs, the external storage capacitor begins to charge. To ensure proper operation, the storage capacitor should be equal to or greater than the total gate capacitance of the two output MOSFET switches. Charge from the load voltage is passed through bootstrap diodes, which prevent the charge from escaping and discharging the capacitor through the MOSFET output switch when the SSR is turned on. The input control current is applied, then the charge is transferred from the storage capacitor through the internal NPN bipolar transistor along with the charge from the photovoltaic, to the MOSFET gates to accomplish a rapid turn-on. After the MOSFETs have turned on and the capacitor has discharged current from the photovoltaic continues to flow into the gates, keeping the MOSFETs turned on. When the input control current is removed, gate current from the photovoltaic stops flowing and the PNP bipolar transistor turns on, discharging the MOSFET gates. The MOSFETs are now off. At this point, with load voltage applied, the capacitor begins recharging for the next turn on cycle. The non-conducting, optical coupling space between the LED and the photovoltaics provides 3750Vrms of isolation between the control input and the switched output of the CPC1560. Important things to note about the operation of the CPC1560: * The device is designed to maintain its guaranteed operating characteristics with DC input control 8 current (IF) in the range of 2.5mA to 10mA (see "Recommended Operating Conditions" on page 4). The device will operate at input currents above and below this range, but device operating characteristics over the operating temperature range are not guaranteed. * There is a minimum LED input current required for the device to shut off: 0.1mA at 25C (see "Electrical Specifications" on page 5). * The output switch will only withstand a maximum of 60 volts across its terminals before breaking down (see"Absolute Maximum Ratings" on page 3). Maximum voltage generally occurs when the output is off. The CPC1560 has two different operating configurations: unidirectional DC-only configuration, and bidirectional AC/DC configuration. In the unidirectional DC-only configuration, the device switches load voltages with a fixed polarity, while in the AC/DC configuration it can switch voltages with either positive or negative polarities. The advantage of operating the device in the DC-only configuration is the ability to switch larger load currents. The advantage of operating it in the AC/DC configuration is the flexibility of switching load voltages of either polarity. 4. Device Configuration 4.1 LED Resistor To assure proper operation of the CPC1560, the LED resistor selection should comply with the recommended operating conditions. Although the LED is capable of being operated up to the absolute maximum ratings, this is not recommended. Operating the LED beyond the recommended operating conditions may prevent the current limit and thermal shutdown functions from performing properly. The equation to calculate the maximum resistor value is: VIN_MIN - VLOW_MAX - VF_MAX RLED_MAX = IF_MIN VIN RLED + VF VLOW * * * * * IF_MIN = Minimum Input Control Current VIN_MIN = Minimum Input Power Source VLOW_MAX = Maximum Logic Level Low Voltage VF_MAX = Maximum Forward Voltage Drop of LED RLED_MAX = Maximum Input Resistor to LED www.ixysic.com R02 INTEGRATED CIRCUITS DIVISION CPC1560 4.2 Storage Capacitor 5.1.2 Temperature Effects The CPC1560 utilizes an optional external capacitor (CEXT) to meet the device's fastest turn-on specification. This external storage capacitor enables the relay to turn on more quickly by holding a reservoir of charge to be transferred to the gates of the MOSFET switches. The capacitor must have a minimum working voltage greater than the load voltage and be connected between pin 8 (C+), the capacitor's positive voltage terminal, and pin 5 (C-), the capacitor's negative voltage terminal. Proper selection of the external storage capacitor begins with the recommended range provided in the "Recommended Operating Conditions" on page 4, and the maximum voltage at the CPC1560 outputs, including transients and faults. The nominal value of the capacitor needs to be chosen to ensure the capacitor's value remains within the recommended range over the operational conditions of the end product the effects of tolerance, temperature coefficient, and (for some types of capacitor) derating due to bias voltage are accounted for, 5. Operational Behavior 5.1 Operating Frequency 5.1.1 Duty Cycle/Power Dissipation Equation 1 shows the relationship between power dissipation, operating frequency, and duty cycle for the CPC1560. From this equation, it can be seen that both switching frequency (fswitch) and duty cycle (D) contribute to power dissipation. The first one by generating switching losses, and the second one by generating ON losses. Switching losses are those caused by changes in the energy state of the load components when the device is switching on and off (i.e. ERISE and EFALL), and the ON losses are those caused by the flow of load current (IL) through the output's on-resistance (RON) when it is switched on. (1) Pavg = IL2 * RON * D + fswitch * (ERISE + EFALL) Because a higher operating frequency translates into higher power consumed by the part, care must be taken to limit its value in order to protect the device from exceeding its maximum power rating. When doing this, both the maximum allowed power dissipation in the part and the ON duty cycle, D=tON / (tON+tOFF), must be taken into consideration. When setting the operating frequency of the CPC1560, the user must also take into account power dissipation over temperature. 5.1.3 Elements of Operating Frequency In addition to ambient temperature, the maximum frequency of the CPC1560 is also determined by the MOSFET's turn-on and turn-off times and the load voltage rise and fall times as follows: (2) fMAX = 1 3 (tON + tOFF) -1 Where 1/3 is a multiplication factor for temperature and process variations. 5.2 Switching Losses During the transition intervals of the switching process, the load components change energy states, which results in switching losses as the energy passes through the MOSFETs. This energy transfer is manifested in the form of heat dissipation and must be taken into consideration. Energy is transferred during the turn-off intervals. This energy, called Erise, will be absorbed by the MOSFET output switches, and if present parasitic load capacitance and the protection device. Energy is also transferred during the turn-on intervals and is called Efall. This energy, will be absorbed by the MOSFET output switches, which is why it should be limited to the "Peak Turn-On Energy Dissipation" values specified in the Absolute Maximum Ratings Table of this datasheet. The user of the CPC1560 device must understand the details of the load behavior and keep in mind the device's recommended operating conditions in order to adequately size the load components and protect the application circuit. The average power of the CPC1560 output MOSFETs for any specific application and for any load type given by Equation 1 and repeated here is: (3) Pavg = IL2 * RON * D + fswitch * (ERISE + EFALL) From this equation we can see how the switching losses (ERISE and EFALL), together with the "on losses," contribute to the CPC1560's output power dissipation. The user must also know that the recommended operating conditions for IL, fSWITCH, load capacitance R02 www.ixysic.com 9 CPC1560 INTEGRATED CIRCUITS DIVISION (CLOAD) and load Inductance (LLOAD), along with other recommended operating conditions given in this datasheet, are constrained by the 85C operation of most industrial applications. For lower operating temperature ranges, these values can be de-rated using the information provided in the temperature graphs in this datasheet. device in the form of heat or an increase in the ambient temperature. The thermal shutdown feature and the current limit feature provide great power cross immunity to the device for improved survivability in harsh environments. 5.4 dV/dt Fault Tolerance 5.2.1 Effects of Ambient Temperature One of the most important factors is the temperature variation of the environment. From the Maximum Allowed Energy Dissipation During tRISE graphs (AC/DC and DC-Only) in this datasheet, the user can see how the energy dissipated in the part during tRISE increases with increasing ambient temperature. The operating frequency of the device is directly related to the amount of energy dissipated in it during the transition times, tRISE and tFALL, which increases rapidly with temperature, as seen in the previously mentioned graphs. Depending on the operating temperature range of the application, the user must derate the maximum allowed energy in the part during tRISE and tFALL (according to the temperature graphs provided) in order to limit the operating switching frequency. 5.3 Current Limit and Thermal Shutdown 5.3.1 Current Limit The CPC1560 has a current limit feature in which current through the output switches is limited to a value larger than the recommended operating current. The CPC1560 device has a finite dV/dt fault tolerance for both the AC/DC and DC-only configurations, which must not be exceeded. The dV/dt tolerance for the device in the AC/DC configuration is double that of the DC-only configuration (see "Absolute Maximum Ratings" on page 3). This is because the dV/dt value of the CPC1560 is inversely proportional to the size of the output switch's Crss, or "reverse transfer capacitance," and this capacitance in the DC-only configuration is double that in the AC/DC configuration. 5.5 Power Derating Bear in mind the power rating of the CPC1560 when operating the device at elevated temperatures. The Absolute Maximum Ratings table shows the maximum allowed output power dissipation at 25C is 787mW, which is the maximum power the output can dissipated before the junction temperature of the device reaches 125C. In order to keep the CPC1560 operating within its power rating, use the Maximum Allowed Load Current graphs provided earlier in this document. In the AC/DC configuration, the CPC1560 has bidirectional current limiting, which consists of current limit circuits for both positive and negative polarities. In the DC-only configuration, the DC current limit consists of the parallel of the two AC current limit circuits. The current limit function has a negative temperature coefficient in which increasing temperature lowers the current limit threshold of the device. Prolonged periods of current limiting will cause the temperature of the device to increase, and, if allowed to continue, will activate the device's thermal shutdown circuitry, forcing the output switches to turn off. 5.3.2 Thermal Shutdown The purpose of the thermal shutdown feature is to completely shut down the operation of the device when its junction temperature has gone above 130C, whether this is due to high power dissipation in the 10 www.ixysic.com R02 INTEGRATED CIRCUITS DIVISION CPC1560 5.7 Over-Voltage Protection DC-Only Application Circuit Resistive Load Turn-Off Characteristics (Supply=45VDC, RLOAD =75) 1.0 50 VL 0.8 40 IL 30 0.6 20 0.4 10 0.2 0 0.0 -80 -60 -40 -20 0 20 Time (s) 40 60 80 MOSFET Current (A) MOSFET Voltage (V) tRISE=46s 5.7.1 Stored Energy in the Load During the CPC1560's switching periods, energy is transferred between the load components, the CPC1560 device, and, if used, the over-voltage protection circuitry. When the output switch turns off, inductive loads (LLOAD) transfer their stored energy to the MOSFET switches, the load capacitance, and the over-voltage protector. (See the turn-off graph for a 45V inductive load application circuit.) When the output switch turns on, the energy in the load inductor is zero, and the load capacitor (CLOAD) must transfer its stored energy into the MOSFET. DC-Only Application Circuit Inductive Load Turn-Off Characteristics (Supply=45V, RLOAD =75, LLOAD= 630H) 50 0.8 40 IL 30 0.6 20 0.4 10 0.2 0 R02 1.0 VL www.ixysic.com MOSFET Current (A) The CPC1560 has rise and fall times that are primarily limited by internal parasitic elements of the device; the load components only play a secondary role. This can be appreciated in the turn-off graph of an application circuit operating at 45V, where the slope of the load voltage starts scooping down into a more capacitive shape after approximately 15 volts. MOSFET Voltage (V) 5.6 Rise and Fall Times 0.0 -80 -60 -40 -20 0 20 Time (s) 40 60 80 11 CPC1560 INTEGRATED CIRCUITS DIVISION 5.7.2 Protection Methods One way to protect the CPC1560 and application circuit components from damage when excessive stored energy is suddenly released into the output MOSFETs of the CPC1560, is to add a Transient Voltage Suppressor (TVS) across the output switches. Use a unidirectional TVS from the outputs to C- for the DC-only configuration, and use a bidirectional TVS across the output pins for the AC/DC configuration as shown in the diagrams below. In order to calculate the required TVS value, the user has to compare working voltage of the application circuit to the breakdown voltage of the CPC1560 with the TVS maximum clamping voltage ratings. The TVS maximum clamping capability must be, at a minimum, equal to the specific peak pulse current of the load. This must be done to ensure the TVS can easily absorb any excess energy coming from the inductive load (LLOAD). In addition to the TVS, other protection techniques are also available depending on the type of load the user is trying to switch. For purely resistive loads the user may rely on the output transistor to handle any parasitic energy. For very low to moderately inductive loads (e.g. remote switching of a load through a long cable), a voltage suppressor or TVS can be used as explained before. For heavily inductive loads, a fly-back diode connected across the load element is recommended For much higher inductive loads, other circuit techniques, device ratings and/or protector types must be considered1. Of paramount importance is that the designer know the characteristics of the load being switched. Figure 2. CPC1560 DC-Only Configuration with Over-Voltage Protection CPC1560 CEXT C+ RLED VIN 1 8 2 7 3 6 4 5 ZLOAD Output Supply DOVP Output C- Supply Figure 3. CPC1560 AC/DC Configuration with Over-Voltage Protection CPC1560 RLED VIN 1 8 2 7 3 6 4 5 C+ CEXT ZLOAD Supply Output Output DOVP CSupply 1 For more over voltage protection techniques consult: Switchmode Power Supply Handbook, 2nd Edition, Keith Billings, ISBN 0-07-006719-8, or Power MOSFET Design, B.E. Taylor, ISBN 0-471-93-802-5 12 www.ixysic.com R02 INTEGRATED CIRCUITS DIVISION CPC1560 6 Manufacturing Information 6.1 Moisture Sensitivity All plastic encapsulated semiconductor packages are susceptible to moisture ingression. IXYS Integrated Circuits Division classifies its plastic encapsulated devices for moisture sensitivity according to the latest version of the joint industry standard, IPC/JEDEC J-STD-020, in force at the time of product evaluation. We test all of our products to the maximum conditions set forth in the standard, and guarantee proper operation of our devices when handled according to the limitations and information in that standard as well as to any limitations set forth in the information or standards referenced below. Failure to adhere to the warnings or limitations as established by the listed specifications could result in reduced product performance, reduction of operable life, and/or reduction of overall reliability. This product carries a Moisture Sensitivity Level (MSL) classification as shown below, and should be handled according to the requirements of the latest version of the joint industry standard IPC/JEDEC J-STD-033. Device Moisture Sensitivity Level (MSL) Classification CPC1560G / CPC1560GS MSL 1 6.2 ESD Sensitivity This product is ESD Sensitive, and should be handled according to the industry standard JESD-625. 6.3 Soldering Profile Provided in the table below is the Classification Temperature (TC) of this product and the maximum dwell time the body temperature of this device may be (TC - 5)C or greater. The classification temperature sets the Maximum Body Temperature allowed for this device during lead-free reflow processes. For through-hole devices, and any other processes, the guidelines of J-STD-020 must be observed. Device Classification Temperature (TC) Dwell Time (tp) Max Reflow Cycles CPC1560G / CPC1560GS 250C 30 seconds 3 6.4 Board Wash IXYS Integrated Circuits Division recommends the use of no-clean flux formulations. Board washing to reduce or remove flux residue following the solder reflow process is acceptable provided proper precautions are taken to prevent damage to the device. These precautions include but are not limited to: using a low pressure wash and providing a follow up bake cycle sufficient to remove any moisture trapped within the device due to the washing process. Due to the variability of the wash parameters used to clean the board, determination of the bake temperature and duration necessary to remove the moisture trapped within the package is the responsibility of the user (assembler). Cleaning or drying methods that employ ultrasonic energy may damage the device and should not be used. Additionally, the device must not be exposed to flux or solvents that are Chlorine- or Fluorine-based. R02 www.ixysic.com 13 CPC1560 INTEGRATED CIRCUITS DIVISION 6.5 Mechanical Dimensions 6.5.1 CPC1560G DIP Package Dimensions 2.540 0.127 (0.100 0.005) 9.652 0.381 (0.380 0.015) 8-0.800 DIA. (8-0.031 DIA.) 2.540 0.127 (0.100 0.005) 9.144 0.508 (0.360 0.020) 6.350 0.127 (0.250 0.005) Pin 1 PCB Hole Pattern 7.620 0.254 (0.300 0.010) 0.457 0.076 (0.018 0.003) 3.302 0.051 (0.130 0.002) 7.620 0.127 (0.300 0.005) 7.239 TYP. (0.285) 4.064 TYP (0.160) 0.254 0.0127 (0.010 0.0005) 7.620 0.127 (0.300 0.005) Dimensions mm (inches) 0.813 0.102 (0.032 0.004) 6.5.2 CPC1560GS Surface Mount Package Dimensions 9.652 0.381 (0.380 0.015) 2.540 0.127 (0.100 0.005) 6.350 0.127 (0.250 0.005) Pin 1 3.302 0.051 (0.130 0.002) 0.635 0.127 (0.025 0.005) 9.525 0.254 (0.375 0.010) 0.457 0.076 (0.018 0.003) PCB Land Pattern 2.54 (0.10) 8.90 (0.3503) 1.65 (0.0649) 7.620 0.254 (0.300 0.010) 0.254 0.0127 (0.010 0.0005) 0.65 (0.0255) 4.445 0.127 (0.175 0.005) Dimensions mm (inches) 0.813 0.102 (0.032 0.004) 14 www.ixysic.com R02 INTEGRATED CIRCUITS DIVISION CPC1560 6.5.3 CPC1560GSTR Tape and Reel Specification 330.2 DIA. (13.00 DIA.) Top Cover Tape Thickness 0.102 MAX. (0.004 MAX.) W=16.00 (0.63) Bo=10.30 (0.406) K0 =4.90 (0.193) Ao=10.30 (0.406) K1 =4.20 (0.165) Embossed Carrier Embossment P1=12.00 (0.472) User Direction of Feed Dimensions mm (inches) NOTES: 1. Dimensions carry tolerances of EIA Standard 481-2 2. Tape complies with all "Notes" for constant dimensions listed on page 5 of EIA-481-2 For additional information please visit www.ixysic.com IXYS Integrated Circuits Division makes no representations or warranties with respect to the accuracy or completeness of the contents of this publication and reserves the right to make changes to specifications and product descriptions at any time without notice. Neither circuit patent licenses or indemnity are expressed or implied. Except as set forth in IXYS Integrated Circuits Division's Standard Terms and Conditions of Sale, IXYS Integrated Circuits Division assumes no liability whatsoever, and disclaims any express or implied warranty relating to its products, including, but not limited to, the implied warranty of merchantability, fitness for a particular purpose, or infringement of any intellectual property right. The products described in this document are not designed, intended, authorized, or warranted for use as components in systems intended for surgical implant into the body, or in other applications intended to support or sustain life, or where malfunction of IXYS Integrated Circuits Division's product may result in direct physical harm, injury, or death to a person or severe property or environmental damage. IXYS Integrated Circuits Division reserves the right to discontinue or make changes to its products at any time without notice. Specification: DS-CPC1560-R02 (c)Copyright 2017, IXYS Integrated Circuits Division All rights reserved. Printed in USA. 11/3/2017 R02 www.ixysic.com 15 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: IXYS: CPC1560GSTR