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| FDD6680S December 2000 FDD6680S 30V N-Channel PowerTrench SyncFETTM General Description The FDD6680S is designed to replace a single MOSFET and Schottky diode in synchronous DC:DC power supplies. This 30V MOSFET is designed to maximize power conversion efficiency, providing a low RDS(ON) and low gate charge. The FDD6680S includes an integrated Schottky diode using Fairchild's monolithic SyncFET technology. The performance of the FDD6680S as the low-side switch in a synchronous rectifier is indistinguishable from the performance of the FDD6680A in parallel with a Schottky diode. Features * 55 A, 30 V RDS(ON) = 11 m @ VGS = 10 V RDS(ON) = 17 m @ VGS = 4.5 V * Includes SyncFET Schottky body diode * Low gate charge (17nC typical) * High performance trench technology for extremely low RDS(ON) * High power and current handling capability . Applications * DC/DC converter * Motor Drives D D G S TO-252 S G Absolute Maximum Ratings Symbol VDSS VGSS ID PD Drain-Source Voltage Gate-Source Voltage Drain Current - Continuous - Pulsed Power Dissipation TA=25oC unless otherwise noted Parameter Ratings 30 20 (Note 3) (Note 1a) (Note 1) (Note 1a) (Note 1b) Units V V A W 55 100 60 3.1 1.3 -55 to +150 TJ, TSTG Operating and Storage Junction Temperature Range C Thermal Characteristics RJC RJA RJA Thermal Resistance, Junction-to-Case Thermal Resistance, Junction-to-Ambient Thermal Resistance, Junction-to-Ambient (Note 1) (Note 1a) (Note 1b) 2.1 40 96 C/W C/W C/W Package Marking and Ordering Information Device Marking FDD6680S Device FDD6680S Reel Size 13'' Tape width 16mm Quantity 2500 units 2001 Fairchild Semiconductor Corporation FDD6680S Rev D(W) FDD6680S Electrical Characteristics Symbol WDSS IAR TA = 25C unless otherwise noted Parameter Drain-Source Avalanche Energy Drain-Source Avalanche Current Test Conditions Single Pulse, VDD = 15 V, ID=14A Min Typ Max Units 245 14 mJ A Drain-Source Avalanche Ratings (Note 2) Off Characteristics BVDSS BVDSS TJ IDSS IGSSF IGSSR Drain-Source Breakdown Voltage Breakdown Voltage Temperature Coefficient Zero Gate Voltage Drain Current Gate-Body Leakage, Forward Gate-Body Leakage, Reverse (Note 2) VGS = 0 V, ID = 1 mA ID = 1 mA, Referenced to 25C VDS = 24 V, VGS = 20 V, VGS = -20 V, VGS = 0 V VDS = 0 V VDS = 0 V 30 19 500 100 -100 V mV/C A nA nA On Characteristics VGS(th) VGS(th) TJ RDS(on) Gate Threshold Voltage Gate Threshold Voltage Temperature Coefficient Static Drain-Source On-Resistance On-State Drain Current Forward Transconductance VDS = VGS, ID = 1 mA ID = 1 mA, Referenced to 25C VGS = 10 V, ID = 12.5 A ID = 10 A VGS = 4.5 V, VGS= 10 V, ID = 12.5A, TJ= 125C VGS = 10 V, VDS = 15 V, VDS = 5 V ID = 12.5 A 1 2 -3.3 9.5 13.5 17 3 V mV/C m 11 17 23 ID(on) gFS 50 27 A S Dynamic Characteristics Ciss Coss Crss Input Capacitance Output Capacitance Reverse Transfer Capacitance (Note 2) VDS = 15 V, f = 1.0 MHz V GS = 0 V, 2010 526 186 pF pF pF Switching Characteristics td(on) tr td(off) tf Qg Qgs Qgd Turn-On Delay Time Turn-On Rise Time Turn-Off Delay Time Turn-Off Fall Time Total Gate Charge Gate-Source Charge Gate-Drain Charge VDS = 15 V, VGS = 10 V, ID = 1 A, RGEN = 6 10 10 34 14 18 18 55 23 24 ns ns ns ns nC nC nC VDS = 15 V, VGS = 5 V ID = 12.5 A, 17 6.2 5.5 Drain-Source Diode Characteristics and Maximum Ratings IS VSD trr Qrr Maximum Continuous Drain-Source Diode Forward Current Drain-Source Diode Forward Voltage Diode Reverse Recovery Time Diode Reverse Recovery Charge VGS = 0 V, IS = 4.4 A VGS = 0 V, IS = 7 A IF = 12.5A, diF/dt = 300 A/s (Note 2) (Note 2) 4.4 0.49 0.56 20 19.7 0.7 A V nS nC (Note 3) FDD6680S Rev D (W) FDD6680S Electrical Characteristics TA = 25C unless otherwise noted Notes: 1. RJA is the sum of the junction-to-case and case-to-ambient thermal resistance where the case thermal reference is defined as the solder mounting surface of the drain pins. RJC is guaranteed by design while RCA is determined by the user's board design. a) RJA = 40C/W when mounted on a 1in2 pad of 2 oz copper b) RJA = 96C/W when mounted on a minimum pad. Scale 1 : 1 on letter size paper 2. Pulse Test: Pulse Width < 300s, Duty Cycle < 2.0% PD R DS(ON) 3. Maximum current is calculated as: where PD is maximum power dissipation at TC = 25C and RDS(on) is at TJ(max) and VGS = 10V. Package current limitation is 21A FDD6680S Rev D (W) FDD6680S Typical Characteristics 60 5.0V 4.5V 4.0V RDS(ON), NORMALIZED DRAIN-SOURCE ON-RESISTANCE VGS = 10V 50 ID, DRAIN CURRENT (A) 40 30 20 10 0 0 1 2 3 VDS, DRAIN-SOURCE VOLTAGE (V) 7.0V 2 1.8 1.6 1.4 1.2 1 0.8 0 10 20 30 40 50 ID, DRAIN CURRENT (A) VGS = 4.0V 4.5V 5.0V 6.0V 3.5V 7.0V 8.0V 10V 3.0V Figure 1. On-Region Characteristics. Figure 2. On-Resistance Variation with Drain Current and Gate Voltage. 0.04 RDS(ON), ON-RESISTANCE (OHM) 2.6 RDS(ON), NORMALIZED DRAIN-SOURCE ON-RESISTANCE 2.2 1.8 1.4 1 0.6 0.2 -50 -25 0 25 50 75 100 o ID = 12.5A VGS = 10V ID = 6.3A 0.03 0.02 TA = 100oC 0.01 TA = 25oC 125 150 0 2 4 6 8 10 VGS, GATE TO SOURCE VOLTAGE (V) TJ, JUNCTION TEMPERATURE ( C) Figure 3. On-Resistance Variation with Temperature. 50 VDS = 5V ID, DRAIN CURRENT (A) 40 Figure 4. On-Resistance Variation with Gate-to-Source Voltage. 10 IS, REVERSE DRAIN CURRENT (A) 100oC TA = -55oC 25oC VGS = 0V 1 30 0.1 TA = 100oC 25oC 20 0.01 -55oC 10 0 1 2 3 4 5 VGS, GATE TO SOURCE VOLTAGE (V) 0.001 0 0.2 0.4 0.6 0.8 VSD, BODY DIODE FORWARD VOLTAGE (V) Figure 5. Transfer Characteristics. Figure 6. Body Diode Forward Voltage Variation with Source Current and Temperature. FDD6680S Rev D (W) FDD6680S Typical Characteristics (continued) 10 VGS, GATE-SOURCE VOLTAGE (V) ID =12.5A 8 15V 6 CAPACITANCE (pF) VDS = 5V 10V 3000 2500 2000 1500 1000 500 0 0 10 20 Qg, GATE CHARGE (nC) 30 40 0 10 20 30 VDS, DRAIN TO SOURCE VOLTAGE (V) COSS CRSS CISS f = 1MHz VGS = 0 V 4 2 0 Figure 7. Gate Charge Characteristics. 60 P(pk), PEAK TRANSIENT POWER (W) 50 40 30 20 10 Figure 8. Capacitance Characteristics. ID, DRAIN CURRENT (A) 100 RDS(ON) LIMIT 1ms 10ms 100ms 1s 10s VGS = 10V SINGLE PULSE RJA = 96oC/W TA = 25oC DC 100s SINGLE PULSE RJA = 96C/W TA = 25C 1 0.01 0.1 1 10 100 VDS, DRAIN-SOURCE VOLTAGE (V) 0 0.01 0.1 1 10 100 1000 t1, TIME (sec) Figure 9. Maximum Safe Operating Area. Figure 10. Single Pulse Maximum Power Dissipation. r(t), NORMALIZED EFFECTIVE TRANSIENT THERMAL RESISTANCE 1 D = 0.5 0.2 0.1 0.1 0.05 0.02 RJA(t) = r(t) + RJA RJA = 96 C/W P(pk) 0.01 SINGLE PULSE t1 t2 TJ - TA = P * RJA(t) Duty Cycle, D = t1 / t2 0.01 0.001 0.0001 0.001 0.01 0.1 t1, TIME (sec) 1 10 100 1000 Figure 11. Transient Thermal Response Curve. Thermal characterization performed using the conditions described in Note 1b. Transient thermal response will change depending on the circuit board design. FDD6680S Rev D (W) FDD6680S Typical Characteristics (continued) SyncFET Schottky Body Diode Characteristics Fairchild's SyncFET process embeds a Schottky diode in parallel with PowerTrench MOSFET. This diode exhibits similar characteristics to a discrete external Schottky diode in parallel with a MOSFET. Figure 12 shows the reverse recovery characteristic of the FDD6680S. Schottky barrier diodes exhibit significant leakage at high temperature and high reverse voltage. This will increase the power in the device. IDSS, REVERSE LEAKAGE CURRENT (A) 0.1 0.01 100oC 0.001 25 C o Current: 3A/div 0 0.0001 0 10 20 30 VDS, REVERSE VOLTAGE (V) Figure 14. SyncFET body diode reverse leakage versus drain-source voltage and temperature. 10nS/div Figure 12. FDD6680S SyncFET body diode reverse recovery characteristic. For comparison purposes, Figure 13 shows the reverse recovery characteristics of the body diode of an equivalent size MOSFET produced without SyncFET (FDD6680). Current: 3A/div 0 10nS/div Figure 13. Non-SyncFET (FDS6680) body diode reverse recovery characteristic. FDS6680S Rev C (W) TRADEMARKS The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended to be an exhaustive list of all such trademarks. ACExTM BottomlessTM CoolFETTM CROSSVOLTTM DOMETM E2CMOSTM EnSignaTM FACTTM FACT Quiet SeriesTM FAST DISCLAIMER FASTrTM GlobalOptoisolatorTM GTOTM HiSeCTM ISOPLANARTM MICROWIRETM OPTOLOGICTM OPTOPLANARTM PACMANTM POPTM PowerTrench QFETTM QSTM QT OptoelectronicsTM Quiet SeriesTM SILENT SWITCHER SMART STARTTM SuperSOTTM-3 SuperSOTTM-6 SuperSOTTM-8 SyncFETTM TinyLogicTM UHCTM VCXTM FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or 2. A critical component is any component of a life support device or system whose failure to perform can systems which, (a) are intended for surgical implant into be reasonably expected to cause the failure of the life the body, or (b) support or sustain life, or (c) whose support device or system, or to affect its safety or failure to perform when properly used in accordance with instructions for use provided in the labeling, can be effectiveness. reasonably expected to result in significant injury to the user. PRODUCT STATUS DEFINITIONS Definition of Terms Datasheet Identification Advance Information Product Status Formative or In Design Definition This datasheet contains the design specifications for product development. Specifications may change in any manner without notice. This datasheet contains preliminary data, and supplementary data will be published at a later date. Fairchild Semiconductor reserves the right to make changes at any time without notice in order to improve design. This datasheet contains final specifications. Fairchild Semiconductor reserves the right to make changes at any time without notice in order to improve design. Preliminary First Production No Identification Needed Full Production Obsolete Not In Production This datasheet contains specifications on a product that has been discontinued by Fairchild semiconductor. The datasheet is printed for reference information only. Rev. G |
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