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| FDS6680AS March 2005 FDS6680AS 30V N-Channel PowerTrench(R) SyncFETTM General Description The FDS6680AS is designed to replace a single SO-8 MOSFET and Schottky diode in synchronous DC:DC power supplies. This 30V MOSFET is designed to maximize power conversion efficiency, providing a low and low gate charge. The FDS6680AS RDS(ON) includes an integrated Schottky diode using Fairchild's monolithic SyncFET technology. The performance of the FDS6680AS as the low-side switch in a synchronous rectifier is indistinguishable from the performance of the FDS6680 in parallel with a Schottky diode. Features * 11.5 A, 30 V. RDS(ON) max= 10.0 m @ VGS = 10 V RDS(ON) max= 12.5 m @ VGS = 4.5 V * * * Includes SyncFET Schottky body diode Low gate charge (22nC typical) High performance trench technology for extremely low RDS(ON) and fast switching * High power and current handling capability Applications * DC/DC converter * Low side notebooks D D D D 5 6 4 3 2 1 SO-8 S S S G 7 8 Absolute Maximum Ratings Symbol VDSS VGSS ID PD Drain-Source Voltage Gate-Source Voltage Drain Current - Continuous - Pulsed TA=25oC unless otherwise noted Parameter Ratings 30 20 (Note 1a) Units V V A W 11.5 50 2.5 1.2 1 -55 to +150 Power Dissipation for Single Operation (Note 1a) (Note 1b) (Note 1c) TJ, TSTG Operating and Storage Junction Temperature Range C Thermal Characteristics RJA RJC Thermal Resistance, Junction-to-Ambient Thermal Resistance, Junction-to-Case (Note 1a) (Note 1) 50 25 C/W C/W Package Marking and Ordering Information Device Marking FDS6680AS FDS6680AS (c)2005 Fairchild Semiconductor Corporation Device FDS6680AS FDS6680AS_NL (Note 4) Reel Size 13'' 13'' Tape width 12mm 12mm Quantity 2500 units 2500 units FDS6680AS Rev B(X) FDS6680AS Electrical Characteristics Symbol BVDSS BVDSS TJ IDSS IGSS TA = 25C unless otherwise noted Parameter Drain-Source Breakdown Voltage Breakdown Voltage Temperature Coefficient Zero Gate Voltage Drain Current Gate-Body Leakage (Note 2) Test Conditions VGS = 0 V, ID = 1 mA ID = 1 mA, Referenced to 25C VDS = 24 V, VGS = 20 V, VGS = 0 V VDS = 0 V Min 30 Typ Max Units V Off Characteristics 29 500 100 mV/C A 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 = 11.5 A ID = 9.5 A VGS = 4.5 V, VGS=10 V, ID =11.5A, TJ=125C VGS = 10 V, VDS = 15 V, VDS = 5 V ID = 11.5 A 1 1.5 -3 8.4 10.3 12.3 3 V mV/C 10.0 12.5 15.5 m ID(on) gFS 50 48 A S Dynamic Characteristics Ciss Coss Crss RG Input Capacitance Output Capacitance Reverse Transfer Capacitance Gate Resistance (Note 2) VDS = 15 V, f = 1.0 MHz VGS = 15 mV, V GS = 0 V, 1240 350 120 pF pF pF f = 1.0 MHz 1.4 Switching Characteristics td(on) tr td(off) tf td(on) tr td(off) tf Qg(TOT) Qg Qgs Qgd 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 9 VDS = 15 V, VGS = 10 V, ID = 1 A, RGEN = 6 5 27 11 11 VDS = 15 V, VGS = 4.5 V, ID = 1 A, RGEN = 6 12 18 11 22 VDD = 15 V, ID = 11.5 A, 12 3.5 3.4 18 10 42 21 20 22 32 20 30 16 ns ns ns ns ns ns ns ns nC nC nC nC Total Gate Charge at Vgs=10V Total Gate Charge at Vgs=5V Gate-Source Charge Gate-Drain Charge FDS6680AS Rev B(X) FDS6680AS Electrical Characteristics Symbol Parameter TA = 25C unless otherwise noted Test Conditions Min Typ Max Units 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, VGS = 0 V, IF = 11.5A, IS = 3.5 A IS = 7 A (Note 2) (Note 2) 3.5 0.5 0.6 18 12 0.7 A V nS nC diF/dt = 300 A/s (Note 3) 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) 50/W when mounted on a 1 in2 pad of 2 oz copper b) 105/W when mounted on a .04 in2 pad of 2 oz copper c) 125/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. FDS6680AS_NL is a lead free product. The FDS6680AS_NL marking will appear on the reel label. FDS6680AS Rev B(X) FDS6680AS Typical Characteristics 50 VGS = 10V 4.0V 3.5V RDS(ON), NORMALIZED DRAIN-SOURCE ON-RESISTANCE 2 VGS = 3.0V 40 ID, DRAIN CURRENT (A) 6.0V 4.5V 3.0V 1.8 1.6 3.5V 4.0V 1.2 4.5V 5.0V 6.0V 1 10.0V 30 1.4 20 10 2.5V 0 0 0.4 0.8 1.2 1.6 VDS, DRAIN-SOURCE VOLTAGE (V) 2 0.8 0 10 20 30 ID, DRAIN CURRENT (A) 40 50 Figure 1. On-Region Characteristics. Figure 2. On-Resistance Variation with Drain Current and Gate Voltage. 0.05 RDS(ON), ON-RESISTANCE (OHM) 1.4 RDS(ON), NORMALIZED DRAIN-SOURCE ON-RESISTANCE ID = 11.5A VGS = 10V ID = 6A 0.04 1.2 0.03 1 0.02 TA = 125 C o 0.8 0.01 TA = 25 C 0 o 0.6 -50 -25 0 25 50 o TJ, JUNCTION TEMPERATURE ( C) 75 100 2 4 6 8 VGS, GATE TO SOURCE VOLTAGE (V) 10 Figure 3. On-Resistance Variation with Temperature. 50 VDS = 5V IS, REVERSE DRAIN CURRENT (A) 40 ID, DRAIN CURRENT (A) Figure 4. On-Resistance Variation with Gate-to-Source Voltage. 10 VGS = 0V 1 TA = 125oC 0.1 25oC 0.01 -55 C 0.001 o 30 TA = 125oC -55oC 20 10 25 C 0 1 1.5 2 2.5 3 3.5 VGS, GATE TO SOURCE VOLTAGE (V) 4 o 0.0001 0 0.2 0.4 0.6 VSD, BODY DIODE FORWARD VOLTAGE (V) 0.8 Figure 5. Transfer Characteristics. Figure 6. Body Diode Forward Voltage Variation with Source Current and Temperature. FDS6680AS Rev B(X) FDS6680AS Typical Characteristics (continued) 10 VGS, GATE-SOURCE VOLTAGE (V) ID =11.5A 8 VDS = 10V 20V 6 15V 4 CAPACITANCE (pF) 1800 f = 1MHz VGS = 0 V 1500 1200 Ciss 900 600 Coss 2 300 Crss 0 0 5 10 15 Qg, GATE CHARGE (nC) 20 25 0 0 5 10 15 20 25 VDS, DRAIN TO SOURCE VOLTAGE (V) 30 Figure 7. Gate Charge Characteristics. 1000 P(pk), PEAK TRANSIENT POWER (W) 50 Figure 8. Capacitance Characteristics. 100 ID, DRAIN CURRENT (A) RDS(ON) LIMIT 100s 1ms 40 SINGLE PULSE RJA = 125C/W TA = 25C 10 1s 1 VGS = 10V SINGLE PULSE RJA = 125oC/W TA = 25 C 0.01 0.1 o 10ms 100ms 10s DC 30 20 0.1 10 1 10 VDS, DRAIN-SOURCE VOLTAGE (V) 100 0 0.01 0.1 1 10 t1, TIME (sec) 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 0.2 0.1 0.1 0.05 0.02 RJA(t) = r(t) * RJA RJA = 125 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 1c. Transient thermal response will change depending on the circuit board design. FDS6680AS Rev B(X) FDS6680AS 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 FDS6680AS. Schottky barrier diodes exhibit significant leakage at high temperature and high reverse voltage. This will increase the power in the device. 0.1 IDSS, REVERSE LEAKAGE CURRENT (A) 0.01 TA = 125oC 0.001 TA = 100oC 0.0001 3A/DIV 0.00001 TA = 25oC 0.000001 0 5 10 15 20 VDS, REVERSE VOLTAGE (V) 25 30 10nS/DIV Figure 14. SyncFET body diode reverse leakage versus drain-source voltage and temperature. Figure 12. FDS6680AS 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 (FDS6680). Current: 3A/div 0 10nS/div Figure 13. Non-SyncFET (FDS6680) body diode reverse recovery characteristic. FDS6680AS Rev B(X) FDS6680AS Typical Characteristics VDS VGS RGE VGS 0V tp L tP DUT IAS 0.01 + VDD IAS BVDSS VDS VDD vary tP to obtain required peak IAS tAV Figure 15. Unclamped Inductive Load Test Circuit Drain Current Same type as Figure 16. Unclamped Inductive Waveforms + 10V 50k 10F 1F - + VDD DUT VGS QG(TOT) 10V QGS QGD VGS Ig(REF Charge, (nC) Figure 17. Gate Charge Test Circuit Figure 18. Gate Charge Waveform tON VDS VGS RGEN VGSPulse Width 1s RL + DUT VDD 0V 10% 90% 50% 10% 50% 10% td(ON) VDS 90% tr tOFF td(OFF tf ) 90% VGS 0V Duty Cycle 0.1% Pulse Width Figure 19. Switching Time Test Circuit Figure 20. Switching Time Waveforms FDS6680AS Rev B(X) FDS6680AS 30V N-Channel PowerTrench(R) SyncFETTM 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 FAST ActiveArrayTM FASTrTM BottomlessTM FPSTM CoolFETTM FRFETTM CROSSVOLTTM GlobalOptoisolatorTM DOMETM GTOTM EcoSPARKTM HiSeCTM E2CMOSTM I2CTM EnSignaTM i-LoTM FACTTM ImpliedDisconnectTM FACT Quiet SeriesTM IntelliMAXTM ISOPLANARTM LittleFETTM MICROCOUPLERTM MicroFETTM MicroPakTM MICROWIRETM MSXTM MSXProTM OCXTM OCXProTM Across the board. Around the world.TM OPTOLOGIC OPTOPLANARTM The Power Franchise PACMANTM Programmable Active DroopTM POPTM Power247TM PowerEdgeTM PowerSaverTM PowerTrench QFET QSTM QT OptoelectronicsTM Quiet SeriesTM RapidConfigureTM RapidConnectTM SerDesTM SILENT SWITCHER SMART STARTTM SPMTM StealthTM SuperFETTM SuperSOTTM-3 SuperSOTTM-6 SuperSOTTM-8 SyncFETTM TinyLogic TINYOPTOTM TruTranslationTM UHCTM UltraFET UniFETTM VCXTM 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. 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: 2. A critical component is any component of a life 1. Life support devices or systems are devices or 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. I15 8 FDS6680AS Rev. A (X) www.fairchildsemi.com |
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