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| FDS6990AS Dual 30V N-Channel PowerTrench(R) SyncFETTM M May 2008 FDS6990AS Dual 30V N-Channel PowerTrench(R) SyncFETTM Features 7.5 A, 30 V. RDS(ON) = 22 m @ VGS = 10 V RDS(ON) = 28 m @ VGS = 4.5 V Includes SyncFET Schottky diode Low gate charge (10nC typical) High performance trench technology for extremely low RDS(ON) High power and current handling capability General Description The FDS6990AS is designed to replace a dual SO-8 MOSFET and two Schottky diodes 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. Each MOSFET includes integrated Schottky diodes using Fairchild's monolithic SyncFET technology. The performance of the FDS6990AS as the low-side switch in a synchronous rectifier is similar to the performance of the FDS6990A in parallel with a Schottky diode. Applications DC/DC converter Motor drives D1 D2 D2 D1 5 6 Q1 4 3 SO-8 Pin 1 S2 G2 S1 G1 7 8 Q2 2 1 Absolute Maximum Ratings TA=25C unless otherwise noted Symbol VDSS VGSS ID PD Drain-Source Voltage Gate-Source Voltage Drain Current - Continuous - Pulsed Power Dissipation for Dual Operation Power Dissipation for Single Operation (Note 1a) (Note 1b) (Note 1c) TJ, TSTG RJA RJC Operating and Storage Junction Temperature Range (Note 1a) Parameter Ratings 30 20 7.5 20 2 1.6 1 0.9 -55 to +150 Units V V A W C C/W C/W Thermal Characteristics Thermal Resistance, Junction-to-Ambient Thermal Resistance, Junction-to-Case (Note 1a) (Note 1) 78 40 Package Marking and Ordering Information Device Marking FDS6990AS Device FDS6990AS Reel Size 13" Tape width 12mm Quantity 2500 units (c)2008 Fairchild Semiconductor Corporation 1 www.fairchildsemi.com FDS6990AS Rev. A1 FDS6990AS Dual 30V N-Channel PowerTrench(R) SyncFETTM Electrical Characteristics TA = 25C unless otherwise noted Symbol Off Characteristics BVDSS BVDSS TJ IDSS IGSS VGS(th) VGS(th) TJ RDS(on) Drain-Source Breakdown Voltage Breakdown Voltage Temperature Coefficient Zero Gate Voltage Drain Current Gate-Body Leakage VGS = 0 V, ID = 1 mA ID = 1 mA, Referenced to 25C VDS = 24 V, VGS = 0 V VGS = 20 V, VDS = 0 V VDS = VGS, ID = 1 mA ID = 1 mA, Referenced to 25C VGS = 10 V, ID = 7.5 A VGS = 10 V, ID = 7.5 A, TJ = 125C VGS = 4.5 V, ID = 6.5 A VGS = 10 V, VDS = 5 V VDS = 15 V, ID = 10 A VDS = 15 V, VGS = 0 V, f = 1.0 MHz 20 29 1 1.7 -3 17 26 21 22 35 28 30 31 500 100 3 V mV/C A nA Parameter Test Conditions Min Typ Max Units On Characteristics (Note 2) Gate Threshold Voltage Gate Threshold Voltage Temperature Coefficient Static Drain-Source On-Resistance On-State Drain Current Forward Transconductance V mV/C m ID(on) gFS Ciss Coss Crss RG td(on) tr td(off) tf td(on) tr td(off) tf Qg(TOT) Qg Qgs Qgd IS VSD trr Qrr A S Dynamic Characteristics Input Capacitance Output Capacitance Reverse Transfer Capacitance Gate Resistance VGS = 15 mV, f = 1.0 MHz VDS = 15 V, ID = 1 A, VGS = 10 V, RGEN = 6 550 330 60 3.1 pF pF pF 16 10 38 88 18 16 24 10 14 8 ns ns ns ns ns ns ns ns nC nC nC nC Switching Characteristics (Note 2) Turn-On Delay Time Turn-On Rise Time Turn-Off Delay Time Turn-Off Fall Time Turn-On Delay Time Turn-On Rise Time Turn-Off Delay Time Turn-Off Fall Time Total Gate Charge at Vgs = 10V Total Gate Charge at Vgs = 5V Gate-Source Charge Gate-Drain Charge VDD = 15 V, ID = 10 A, VGS = 5 V VDS = 15 V, ID = 1 A, VGS = 4.5 V, RGEN = 6 8 5 24 4 9 8 14 5 10 6 1.5 2.0 Drain-Source Diode Characteristics and Maximum Ratings Maximum Continuous Drain-Source Diode Forward Current Drain-Source Diode Forward Voltage Diode Reverse Recovery Time Diode Reverse Recovery Charge VGS = 0 V, IS = 2.3 A IF = 10A, diF/dt = 300 A/s (Note 3) (Note 2) 0.6 18 11 2.9 0.7 A V nS nC 2 FDS6990AS Rev. A1 www.fairchildsemi.com FDS6990AS Dual 30V N-Channel PowerTrench(R) SyncFETTM 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) 78C/W when mounted on a 0.5 in2 pad of 2 oz copper b) 125C/W when mounted on a 0.02 in2 pad of 2 oz copper c) 135C/W when mounted on a minimum pad. Scale 1 : 1 on letter size paper 2. Pulse Test: Pulse Width < 300s, Duty Cycle < 2.0% 3. See "SyncFET Schottky body diode characteristics" below. 4 3 FDS6990AS Rev. A1 www.fairchildsemi.com FDS6990AS Dual 30V N-Channel PowerTrench(R) SyncFETTM Typical Characteristics 20 VGS = 10V 4.5V 4.0V 3.0V 3.5V 2 VGS = 3.0V RDS(ON), NORMALIZED DRAIN-SOURCE ON-RESISTANCE 1.8 I D, DRAIN CURRENT (A) 15 1.6 3.5V 1.4 4.0V 1.2 4.5V 5.0V 6.0V 1 10V 10 5 2.5V 0 0 0.5 1 1.5 2 VDS, DRAIN-SOURCE VOLTAGE (V) 0.8 0 4 8 12 I D, DRAIN CURRENT (A) 16 20 Figure 1. On-Region Characteristics. Figure 2. On-Resistance Variation with Drain Current and Gate Voltage. 0.07 1.6 I D = 7.5A VGS = 10V 1.4 I D = 3.75A RDS(ON), NORMALIZED DRAIN-SOURCE ON-RESISTANCE RDS(ON), ON-RESISTANCE (OHM) 0.06 0.05 1.2 0.04 TA = 125 oC 0.03 1 0.8 0.02 T A = 25 oC 0.6 -50 -25 0 25 50 75 100 125 150 TJ , JUNCTION TEMPERATURE (oC) 0.01 2 4 6 8 10 VGS, GATE TO SOURCE VOLTAGE (V) Figure 3. On-Resistance Variation with Temperature. 20 VDS = 5V 16 Figure 4. On-Resistance Variation with Gate-to-Source Voltage. 100 VGS = 0V IS , REVERSE DRAIN CURRENT (A) 10 I D, DRAIN CURRENT (A) 12 1 T A = 125 o C 8 TA = 125 C 4 25o C 0 1.5 2 2.5 3 3.5 VGS, GATE TO SOURCE VOLTAGE (V) o 0.1 25 oC -55 o C -55 oC 0.01 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. 4 FDS6990AS Rev. A1 www.fairchildsemi.com FDS6990AS Dual 30V N-Channel PowerTrench(R) SyncFETTM Typical Characteristics 10 I D =7.5A 1500 f = 1MHz VGS = 0V VDS = 10V 20V 6 15V 4 1200 VGS, GATE-SOURCE VOLTAGE (V) 8 CAPACITANCE (pF) 900 Ciss 600 Coss 2 300 Crss 0 0 2 4 6 8 10 12 Q g, GATE CHARGE (nC) 0 0 5 10 15 20 25 30 VDS, DRAIN TO SOURCE VOLTAGE (V) Figure 7. Gate Charge Characteristics. 100 RDS(ON) LIMIT 100s 50 Figure 8. Capacitance Characteristics. P(pk), PEAK TRANSIENT POWER (W) 40 SINGLE PULSE R JA = 135C/W TA = 25C I D, DRAIN CURRENT (A) 10 100s 1 DC 0.1 VGS = 10V SINGLE PULSE R JA = 135 oC/W TA = 25 oC 0.01 0.1 1 10 1s 10s 1ms 10ms 30 20 10 0 100 0.001 0.01 0.1 VDS, DRAIN-SOURCE VOLTAGE (V) 1 t1 , TIME (sec) 10 100 1000 Figure 9. Maximum Safe Operating Area. Figure 10. Single Pulse Maximum Power Dissipation. r(t), NORMALIZED EFFECTIVE TRANSIENT THERMAL RESISTANCE 1 D = 0.5 RJA(t) = r(t) * R JA 0.2 RJA = 135 C/W P(pk) t1 t2 SINGLE PULSE 0.1 0.1 0.05 0.02 0.01 0.01 T J - TA = P * RJA(t) Duty Cycle, D = t 1 / t 2 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 1c. Transient thermal response will change depending on the circuit board design. 5 FDS6990AS Rev. A1 www.fairchildsemi.com FDS6990AS Dual 30V N-Channel PowerTrench(R) SyncFETTM 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 FDS6990AS. Schottky barrier diodes exhibit significant leakage at high temperature and high reverse voltage. This will increase the power in the device. 0.1 I DSS, REVERSE LEAKAGE CURRENT (A) 0.01 TA = 125 C 0.001 TA = 100 C 0.0001 0.4A/Div 0.00001 TA = 25C 0.000001 0 5 10 15 20 25 30 VDS , REVERSE VOLTAGE (V) 12.5nS/Div Figure 14. SyncFET body diode reverse leakage versus drain-source voltage and temperature. Figure 12. FDS6990AS 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 (FDS6990A). 0.4A/Div 12.5nS/Div Figure 13. Non-SyncFET (FDS6990A) body diode reverse recovery characteristic. 6 FDS6990AS Rev. A1 www.fairchildsemi.com FDS6990AS Dual 30V N-Channel PowerTrench(R) SyncFETTM Typical Characteristics (continued) VDS VGS RGE 0V L BVDSS tP DUT + VDD VDS IAS VDD - tp VGS IAS 0.01 vary tP to obtain required peak IAS tAV Figure 15. Unclamped Inductive Load Test Circuit Drain Current Same type as DUT Figure 16. Unclamped Inductive Waveforms + 10V 50k 10 F 1F - + VDD - VGS DUT VGS Ig(REF) QGS 10V QG(TOT) QGD Charge, (nC) Figure 17. Gate Charge Test Circuit Figure 18. Gate Charge Waveform tON tOFF td(OFF) tf VDS VGS RGEN RL VDS td(ON) 90% tr 90% + DUT VDD 0V 10% 90% 10% - VGS VGS Pulse Width 1s Duty Cycle 0.1% 50% 0V 10% 50% Pulse Width Figure 19. Switching Time Test Circuit Figure 20. Switching Time Waveforms 7 FDS6990AS Rev. A1 www.fairchildsemi.com TRADEMARKS The following includes registered and unregistered trademarks and service marks, owned by Fairchild Semiconductor and/or its global subsidianries, and is not intended to be an exhaustive list of all such trademarks. ACEx(R) Build it NowTM CorePLUSTM CorePOWERTM CROSSVOLTTM CTLTM Current Transfer LogicTM EcoSPARK(R) EfficentMaxTM EZSWITCHTM * TM (R) Fairchild(R) Fairchild Semiconductor(R) FACT Quiet SeriesTM FACT(R) FAST(R) FastvCoreTM FlashWriter(R) * FPSTM F-PFSTM FRFET(R) Global Power ResourceSM Green FPSTM Green FPSTM e-SeriesTM GTOTM IntelliMAXTM ISOPLANARTM MegaBuckTM MICROCOUPLERTM MicroFETTM MicroPakTM MillerDriveTM MotionMaxTM Motion-SPMTM OPTOLOGIC(R) OPTOPLANAR(R) (R) tm PDP-SPMTM Power-SPMTM PowerTrench(R) Programmable Active DroopTM QFET(R) QSTM Quiet SeriesTM RapidConfigureTM Saving our world 1mW at a timeTM SmartMaxTM SMART STARTTM SPM(R) STEALTHTM SuperFETTM SuperSOTTM-3 SuperSOTTM-6 SuperSOTTM-8 SuperMOSTM (R) The Power Franchise(R) tm TinyBoostTM TinyBuckTM TinyLogic(R) TINYOPTOTM TinyPowerTM TinyPWMTM TinyWireTM SerDesTM UHC(R) Ultra FRFETTM UniFETTM VCXTM VisualMaxTM * EZSWITCHTM and FlashWriter(R) are trademarks of System General Corporation, used under license by Fairchild Semiconductor. DISCLAIMER 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. THESE SPECIFICATIONS DO NOT EXPAND THE TERMS OF FAIRCHILD'S WORLDWIDE TERMS AND CONDITIONS, SPECIFICALLY THE WARRANTY THEREIN, WHICH COVERS THESE PRODUCTS. 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 systems which, (a) are intended for surgical implant into the body or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. A critical component in any component of a life support, device, or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. 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; supplementary data will be published at a later date. Fairchild Semiconductor reserves the right to make changes at any time without notice to improve design. This datasheet contains final specifications. Fairchild Semiconductor reserves the right to make changes at any time without notice to improve the design. This datasheet contains specifications on a product that is discontinued by Fairchild Semiconductor. The datasheet is for reference information only. Rev. I34 Preliminary First Production No Identification Needed Obsolete Full Production Not In Production FDS6990AS Rev. A1 WWW. fairchildsemicom |
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