Order this document by MMFT3055EL/D SEMICONDUCTOR TECHNICAL DATA N-Channel Enhancement Mode Silicon Gate TMOS E-FETt Motorola Preferred Device SOT-223 for Surface Mount MEDIUM POWER LOGIC LEVEL TMOS FET 1.5 AMP 60 VOLTS RDS(on) = 0.18 OHM This advanced E-FET is a TMOS power MOSFET designed to withstand high energy in the avalanche and commutation modes. This device is also designed with a low threshold voltage so it is fully enhanced with 5 Volts. This new energy efficient device also offers a drain-to-source diode with a fast recovery time. Designed for low voltage, high speed switching applications in power supplies, converters and PWM motor controls, these devices are particularly well suited for bridge circuits where diode speed and commutating safe operating areas are critical and offer additional safety margin against unexpected voltage transients. The device is housed in the SOT-223 package which is designed for medium power surface mount applications. * Silicon Gate for Fast Switching Speeds * Low Drive Requirement to Interface Power Loads to Logic Level ICs, VGS(th) = 2 Volts Max * Low RDS(on) -- 0.18 max * The SOT-223 Package can be Soldered Using Wave or Reflow. The Formed Leads Absorb Thermal Stress During Soldering, Eliminating the Possibility of Damage to the Die * Available in 12 mm Tape and Reel Use MMFT3055ELT1 to order the 7 inch/1000 unit reel. Use MMFT3055ELT3 to order the 13 inch/4000 unit reel. 2,4 D 4 1 2 3 1 G S CASE 318E-04, STYLE 3 TO-261AA 3 MAXIMUM RATINGS (TA = 25C unless otherwise noted) Rating Symbol Value Unit Drain-to-Source Voltage VDS 60 Gate-to-Source Voltage -- Continuous VGS 15 Drain Current -- Continuous Drain Current -- Pulsed ID IDM 1.5 6 Adc PD(1) 0.8 6.4 Watts mW/C TJ, Tstg - 65 to 150 C EAS 178 mJ RJA 156 C/W TL 260 5 C Sec Total Power Dissipation @ TA = 25C Derate above 25C Operating and Storage Temperature Range Single Pulse Drain-to-Source Avalanche Energy -- Starting TJ = 25C (VDD = 25 V, VGS = 5 V, Peak IL= 1.5 A, L = 0.2 mH, RG = 25 ) Vdc DEVICE MARKING 3055L THERMAL CHARACTERISTICS Thermal Resistance -- Junction-to-Ambient (surface mounted) Maximum Temperature for Soldering Purposes, Time in Solder Bath (1) Power rating when mounted on FR-4 glass epoxy printed circuit board using recommended footprint. TMOS is a registered trademark of Motorola, Inc. E-FET is a trademark of Motorola, Inc. Thermal Clad is a trademark of the Bergquist Company Preferred devices are Motorola recommended choices for future use and best overall value. REV 3 TMOS Motorola Motorola, Inc. 1995 Power MOSFET Transistor Device Data 1 MMFT3055EL ELECTRICAL CHARACTERISTICS (TA = 25C unless otherwise noted) Characteristic Symbol Min Typ Max Unit V(BR)DSS 60 -- -- Vdc Zero Gate Voltage Drain Current, (VDS = 60 V, VGS = 0) IDSS -- -- 10 Adc Gate-Body Leakage Current, (VGS = 15 V, VDS = 0) IGSS -- -- 100 nAdc Gate Threshold Voltage, (VDS = VGS, ID = 1.0 mA) VGS(th) 1 -- 2 Vdc Static Drain-to-Source On-Resistance, (VGS = 5 V, ID = 0.75 A) RDS(on) -- -- 0.18 Ohms Drain-to-Source On-Voltage, (VGS = 5 V, ID = 1.5 A) VDS(on) -- -- 0.36 Vdc Forward Transconductance, (VDS = 15 V, ID = 0.75 A) gFS -- 2.1 -- mhos Ciss -- 500 -- Coss -- 175 -- Crss -- 40 -- td(on) -- 20 -- tr -- 95 -- td(off) -- 38 -- tf -- 50 -- Qg -- 7 15 Qgs -- 1.3 -- Qgd -- 6.3 -- -- 1.0 -- OFF CHARACTERISTICS Drain-to-Source Breakdown Voltage, (VGS = 0, ID = 250 A) ON CHARACTERISTICS DYNAMIC CHARACTERISTICS Input Capacitance (VDS = 25 V, VGS = 0, f = 1 MHz) Output Capacitance Reverse Transfer Capacitance pF SWITCHING CHARACTERISTICS Turn-On Delay Time Rise Time Turn-Off Delay Time (VDD= 25 V, ID = 6 A VGS = 5 V, RG = 50 ohms, RGS = 25 ohms) Fall Time Total Gate Charge Gate-Source Charge Gate-Drain Charge (VDS = 48 V, ID = 1.5 A, VGS = 5 Vdc) See Figures 15 and 16 ns nC SOURCE DRAIN DIODE CHARACTERISTICS(1) Forward On-Voltage IS = 1.5 A, VGS = 0 VSD Forward Turn-On Time IS = 1.5 A, VGS = 0, dlS/dt = 400 A/s, VR = 30 V ton Reverse Recovery Time trr Vdc Limited by stray inductance -- 55 -- ns (1) Pulse Test: Pulse Width 300 s, Duty Cycle 2% 2 Motorola TMOS Power MOSFET Transistor Device Data MMFT3055EL 1.2 10 4.5 V 5.0 V 4.0 V 8.0 6.0 3.5 V 4.0 3.0 V 2.0 VGS = 2.5 V 0 1.0 2.0 3.0 4.0 ID , DRAIN CURRENT (AMPS) RDS(on) , DRAIN-TO-SOURCE RESISTANCE (OHMS) 1.0 0.9 0.8 0 50 100 150 TJ, JUNCTION TEMP (C) Figure 1. On Region Characteristics Figure 2. Gate-Threshold Voltage Variation With Temperature TJ = -55C VDS = 8 V 25C 8.0 100C 6.0 4.0 2.0 0 2.0 4.0 6.0 7.0 0.30 VGS = 5 V 0.25 TJ = 100C 0.20 25C 0.15 55C 0.10 0.05 0 0 1.0 2.0 3.0 4.0 VGS, GATE-TO-SOURCE VOLTAGE (VOLTS) ID, DRAIN CURRENT (AMPS) Figure 3. Transfer Characteristics Figure 4. On-Resistance versus Drain Current 0.5 TJ = 25C ID = 1.5 A 0.4 0.3 0.2 0.1 0 2.0 1.1 VDS, DRAIN-TO-SOURCE VOLTAGE (VOLTS) 10 0 VDS = VGS ID = 1.0 mA 0.7 -50 5.0 RDS(on) , DRAIN-TO-SOURCE RESISTANCE (OHMS) 0 3.0 4.0 5.0 6.0 7.0 8.0 RDS(on) , DRAIN-TO-SOURCE RESISTANCE (OHMS) ID , DRAIN CURRENT (AMPS) 5.5 V TJ = 25C VGS(TH), GATE THRESHOLD VOLTAGE (NORMALIZED) 6.0 V 0.4 VGS = 5 V ID = 1.5 A 0.3 0.2 0.1 0 -50 0 50 100 VGS, GATE-TO-SOURCE VOLTAGE (VOLTS) TJ, JUNCTION TEMP (C) Figure 5. On-Resistance versus Gate-to-Source Voltage Figure 6. On-Resistance versus Junction Temperature Motorola TMOS Power MOSFET Transistor Device Data 150 3 MMFT3055EL FORWARD BIASED SAFE OPERATING AREA 10 ID , DRAIN CURRENT (AMPS) The FBSOA curves define the maximum drain-to-source voltage and drain current that a device can safely handle when it is forward biased, or when it is on, or being turned on. Because these curves include the limitations of simultaneous high voltage and high current, up to the rating of the device, they are especially useful to designers of linear systems. The curves are based on an ambient temperature of 25C and a maximum junction temperature of 150C. Limitations for repetitive pulses at various ambient temperatures can be determined by using the thermal response curves. Motorola Application Note, AN569, "Transient Thermal Resistance- General Data and Its Use" provides detailed instructions. 1.0 20 ms 0.1 VGS = 15 V SINGLE PULSE TA = 25C 500 ms RDS(on) LIMIT THERMAL LIMIT The switching safe operating area (SOA) is the boundary that the load line may traverse without incurring damage to the MOSFET. The fundamental limits are the peak current, IDM and the breakdown voltage, BVDSS. The switching SOA is applicable for both turn-on and turn-off of the devices for switching times less than one microsecond. r(t), EFFECTIVE THERMAL RESISTANCE (NORMALIZED) 100 ms 1s SWITCHING SAFE OPERATING AREA 1.0 DC 0.01 0.1 10 1.0 VDS, DRAIN-TO-SOURCE VOLTAGE (VOLTS) 100 Figure 7. Maximum Rated Forward Biased Safe Operating Area D = 0.5 0.2 0.1 0.1 P(pk) 0.05 0.02 0.01 0.001 1.0E-05 0.01 t1 SINGLE PULSE 1.0E-04 1.0E-03 RJA(t) = r(t) RJA RJA = 156C/W MAX D CURVES APPLY FOR POWER PULSE TRAIN SHOWN READ TIME AT t1 TJ(pk) - TC = P(pk) RJA(t) t2 DUTY CYCLE, D = t1/t2 1.0E-02 1.0E-01 1.0E+00 1.0E+01 t, TIME (s) Figure 8. Thermal Response COMMUTATING SAFE OPERATING AREA (CSOA) The Commutating Safe Operating Area (CSOA) of Figure 10 defines the limits of safe operation for commutated source-drain current versus re-applied drain voltage when the source-drain diode has undergone forward bias. The curve shows the limitations of IFM and peak VDS for a given rate of change of source current. It is applicable when waveforms similar to those of Figure 9 are present. Full or half-bridge PWM DC motor controllers are common applications requiring CSOA data. Device stresses increase with increasing rate of change of source current so dIS/dt is specified with a maximum value. Higher values of dIS/dt require an appropriate derating of IFM, peak VDS or both. Ultimately dIS/dt is limited primarily by device, package, and circuit impedances. Maximum device stress occurs during trr as the diode goes from conduction to reverse blocking. VDS(pk) is the peak drain-to-source voltage that the device must sustain during commutation; I FM is the maximum forward source-drain diode current just prior to the onset of commutation. VR is specified at 80% rated BVDSS to ensure that the CSOA stress is maximized as IS decays from IRM to zero. RGS should be minimized during commutation. TJ has only a second order effect on CSOA. Stray inductances in Motorola's test circuit are assumed to be practical minimums. dV DS /dt in excess of 10 V/ns was attained with dI S /dt of 400 A/s. 4 Motorola TMOS Power MOSFET Transistor Device Data MMFT3055EL 15 V VGS 0 IFM dlS/dt 90% IS 10% trr ton IRM 0.25 IRM tfrr VDS(pk) VR VDS VdsL Vf MAX. CSOA STRESS AREA Figure 9. Commutating Waveforms 10 IS , SOURCE CURRENT (AMPS) RGS DUT 8.0 - 6.0 VR + 4.0 IFM IS + 20 V - 2.0 VGS 0 0 20 40 60 VR = 80% OF RATED VDSS VdsL = Vf + Li dlS/dt 80 VDS, DRAIN-TO-SOURCE VOLTAGE (VOLTS) Figure 10. Commutating Safe Operating Area (CSOA) Li VDS Figure 11. Commutating Safe Operating Area Test Circuit BVDSS L VDS IL IL(t) VDD t RG VDD tP Figure 12. Unclamped Inductive Switching Test Circuit Motorola TMOS Power MOSFET Transistor Device Data t, (TIME) Figure 13. Unclamped Inductive Switching Waveforms 5 MMFT3055EL VGS VDS 1800 Ciss C, CAPACITANCE (pF) 1600 TJ = 25C 1400 Coss VDS = 0 1200 VGS = 0 1000 Crss 800 Ciss 600 Coss 400 200 0 Crss 15 10 5 0 5 10 15 20 GATE-TO-SOURCE OR DRAIN-TO-SOURCE VOLTAGE (VOLTS) VGS , GATE-TO-SOURCE VOLTAGE (VOLTS) Figure 14. Capacitance Variation With Voltage 10 TJ = 25C VDS = 48 V ID = 1.5 A 8.0 6.0 4.0 2.0 0 0 2.5 7.5 12.5 17.5 22.5 Qg, TOTAL GATE CHARGE (nC) Figure 15. Gate Charge versus Gate-To-Source Voltage +18 V 47 k Vin 15 V VDD 1 mA 5V 0.1 F 2N3904 2N3904 100 k 47 k SAME DEVICE TYPE AS DUT 100 k 100 FERRITE BEAD DUT Vin = 15 Vpk; PULSE WIDTH 100 s, DUTY CYCLE 10%. Figure 16. Gate Charge Test Circuit 6 Motorola TMOS Power MOSFET Transistor Device Data MMFT3055EL INFORMATION FOR USING THE SOT-223 SURFACE MOUNT PACKAGE MINIMUM RECOMMENDED FOOTPRINT FOR SURFACE MOUNTED APPLICATIONS Surface mount board layout is a critical portion of the total design. The footprint for the semiconductor packages must be the correct size to insure proper solder connection interface between the board and the package. With the correct pad geometry, the packages will self align when subjected to a solder reflow process. 0.15 3.8 0.079 2.0 0.091 2.3 0.248 6.3 0.091 2.3 0.079 2.0 0.059 1.5 0.059 1.5 0.059 1.5 inches mm SOT-223 SOT-223 POWER DISSIPATION PD = TJ(max) - TA RJA 150C - 25C = 800 milliwatts PD = 156C/W The 156C/W for the SOT-223 package assumes the use of the recommended footprint on a glass epoxy printed circuit board to achieve a power dissipation of 800 milliwatts. There are other alternatives to achieving higher power dissipation from the SOT-223 package. One is to increase the area of the drain pad. By increasing the area of the drain pad, the power dissipation can be increased. Although one can almost double Motorola TMOS Power MOSFET Transistor Device Data 160 140 Board Material = 0.0625 G-10/FR-4, 2 oz Copper TA = 25C 0.8 Watts 120 1.5 Watts 1.25 Watts* 100 The values for the equation are found in the maximum ratings table on the data sheet. Substituting these values into the equation for an ambient temperature TA of 25C, one can calculate the power dissipation of the device which in this case is 800 milliwatts. the power dissipation with this method, one will be giving up area on the printed circuit board which can defeat the purpose of using surface mount technology. A graph of RJA versus drain pad area is shown in Figure 17. R JA , Thermal Resistance, Junction to Ambient ( C/W) The power dissipation of the SOT-223 is a function of the drain pad size. This can vary from the minimum pad size for soldering to a pad size given for maximum power dissipation. Power dissipation for a surface mount device is determined by TJ(max), the maximum rated junction temperature of the die, RJA, the thermal resistance from the device junction to ambient, and the operating temperature, TA. Using the values provided on the data sheet for the SOT-223 package, PD can be calculated as follows: *Mounted on the DPAK footprint 80 0.0 0.2 0.4 0.6 0.8 1.0 A, Area (square inches) Figure 17. Thermal Resistance versus Drain Pad Area for the SOT-223 Package (Typical) Another alternative would be to use a ceramic substrate or an aluminum core board such as Thermal Clad. Using a board material such as Thermal Clad, an aluminum core board, the power dissipation can be doubled using the same footprint. 7 MMFT3055EL SOLDER STENCIL GUIDELINES Prior to placing surface mount components onto a printed circuit board, solder paste must be applied to the pads. A solder stencil is required to screen the optimum amount of solder paste onto the footprint. The stencil is made of brass or stainless steel with a typical thickness of 0.008 inches. The stencil opening size for the SOT-223 package should be the same as the pad size on the printed circuit board, i.e., a 1:1 registration. SOLDERING PRECAUTIONS The melting temperature of solder is higher than the rated temperature of the device. When the entire device is heated to a high temperature, failure to complete soldering within a short time could result in device failure. Therefore, the following items should always be observed in order to minimize the thermal stress to which the devices are subjected. * Always preheat the device. * The delta temperature between the preheat and soldering should be 100C or less.* * When preheating and soldering, the temperature of the leads and the case must not exceed the maximum temperature ratings as shown on the data sheet. When using infrared heating with the reflow soldering method, the difference shall be a maximum of 10C. * The soldering temperature and time shall not exceed 260C for more than 10 seconds. * When shifting from preheating to soldering, the maximum temperature gradient shall be 5C or less. * After soldering has been completed, the device should be allowed to cool naturally for at least three minutes. Gradual cooling should be used as the use of forced cooling will increase the temperature gradient and result in latent failure due to mechanical stress. * Mechanical stress or shock should not be applied during cooling * Soldering a device without preheating can cause excessive thermal shock and stress which can result in damage to the device. TYPICAL SOLDER HEATING PROFILE For any given circuit board, there will be a group of control settings that will give the desired heat pattern. The operator must set temperatures for several heating zones, and a figure for belt speed. Taken together, these control settings make up a heating "profile" for that particular circuit board. On machines controlled by a computer, the computer remembers these profiles from one operating session to the next. Figure 18 shows a typical heating profile for use when soldering a surface mount device to a printed circuit board. This profile will vary among soldering systems but it is a good starting point. Factors that can affect the profile include the type of soldering system in use, density and types of components on the board, type of solder used, and the type of board or substrate material being used. This profile shows temperature versus time. The STEP 1 PREHEAT ZONE 1 "RAMP" 200C STEP 2 STEP 3 VENT HEATING "SOAK" ZONES 2 & 5 "RAMP" DESIRED CURVE FOR HIGH MASS ASSEMBLIES line on the graph shows the actual temperature that might be experienced on the surface of a test board at or near a central solder joint. The two profiles are based on a high density and a low density board. The Vitronics SMD310 convection/infrared reflow soldering system was used to generate this profile. The type of solder used was 62/36/2 Tin Lead Silver with a melting point between 177 -189C. When this type of furnace is used for solder reflow work, the circuit boards and solder joints tend to heat first. The components on the board are then heated by conduction. The circuit board, because it has a large surface area, absorbs the thermal energy more efficiently, then distributes this energy to the components. Because of this effect, the main body of a component may be up to 30 degrees cooler than the adjacent solder joints. STEP 4 HEATING ZONES 3 & 6 "SOAK" STEP 5 STEP 6 STEP 7 HEATING VENT COOLING ZONES 4 & 7 205 TO 219C "SPIKE" PEAK AT 170C SOLDER JOINT 160C 150C 150C 140C 100C 100C SOLDER IS LIQUID FOR 40 TO 80 SECONDS (DEPENDING ON MASS OF ASSEMBLY) DESIRED CURVE FOR LOW MASS ASSEMBLIES 50C TIME (3 TO 7 MINUTES TOTAL) TMAX Figure 18. Typical Solder Heating Profile 8 Motorola TMOS Power MOSFET Transistor Device Data MMFT3055EL PACKAGE DIMENSIONS A F NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 4 S B 1 2 3 D L G J C 0.08 (0003) H M K INCHES DIM MIN MAX A 0.249 0.263 B 0.130 0.145 C 0.060 0.068 D 0.024 0.035 F 0.115 0.126 G 0.087 0.094 H 0.0008 0.0040 J 0.009 0.014 K 0.060 0.078 L 0.033 0.041 M 0_ 10 _ S 0.264 0.287 STYLE 3: PIN 1. 2. 3. 4. MILLIMETERS MIN MAX 6.30 6.70 3.30 3.70 1.50 1.75 0.60 0.89 2.90 3.20 2.20 2.40 0.020 0.100 0.24 0.35 1.50 2.00 0.85 1.05 0_ 10 _ 6.70 7.30 GATE DRAIN SOURCE DRAIN CASE 318E-04 TO-261AA SOT-223 ISSUE H Motorola TMOS Power MOSFET Transistor Device Data 9 MMFT3055EL Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. "Typical" parameters can and do vary in different applications. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. Motorola does not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer. Literature Distribution Centers: USA: Motorola Literature Distribution; P.O. Box 20912; Phoenix, Arizona 85036. EUROPE: Motorola Ltd.; European Literature Centre; 88 Tanners Drive, Blakelands, Milton Keynes, MK14 5BP, England. JAPAN: Nippon Motorola Ltd.; 4-32-1, Nishi-Gotanda, Shinagawa-ku, Tokyo 141, Japan. ASIA PACIFIC: Motorola Semiconductors H.K. Ltd.; Silicon Harbour Center, No. 2 Dai King Street, Tai Po Industrial Estate, Tai Po, N.T., Hong Kong. 10 *MMFT3055EL/D* Motorola TMOS Power MOSFET Transistor Device Data MMFT3055EL/D