Dual Notebook Power Supply N-Channel PowerTrench SyncFET

FDS6982AS December 2006 FDS6982AS General Description tm Dual Notebook Power Supply N-Channel PowerTrench® SyncFET™ Features • Q2: Optimized to minimize conduction losses Includes SyncFET Schottky body diode RDS(on) max= 13.5mΩ @ VGS = 10V RDS(on) max= 16.5mΩ @ VGS = 4.5V • • Low gate charge (21nC typical) Q1: Optimized for low switching losses RDS(on) max= 28.0mΩ @ VGS = 10V RDS(on) max= 35.0mΩ @ VGS = 4.5V • Low gate charge (11nC typical) The FDS6982AS is designed to replace two single SO8 MOSFETs and Schottky diode in synchronous DC:DC power supplies that provide various peripheral voltages for notebook computers and other battery powered electronic devices. FDS6982AS contains two unique 30V, N-channel, logic level, PowerTrench MOSFETs designed to maximize power conversion efficiency. The high-side switch (Q1) is designed with specific emphasis on reducing switching losses while the low-side switch (Q2) is optimized to reduce conduction losses. Q2 also includes an integrated Schottky diode using Fairchild’s monolithic SyncFET technology. 8.6A, 30V 6.3A, 30V Applications • Notebook D1 D1 D2 D2 www.DataSheet4U.com 5 6 7 Q1 4 3 2 Q2 SO-8 S2 G2 S1 G1 8 1 Absolute Maximum Ratings Symbol VDSS VGSS ID PD Drain-Source Voltage Gate-Source Voltage Drain Current TA = 25°C unless otherwise noted Parameter Q2 30 (Note 1a) Q1 30 ±20 6.3 20 2 1.6 1 0.9 –55 to +150 Units V V A W - Continuous - Pulsed Power Dissipation for Dual Operation Power Dissipation for Single Operation ±20 8.6 30 (Note 1a) (Note 1b) (Note 1c) TJ, TSTG Operating and Storage Junction Temperature Range °C Thermal Characteristics RθJA RθJC Thermal Resistance, Junction-to-Ambient Thermal Resistance, Junction-to-Case (Note 1a) (Note 1) 78 40 °C/W °C/W Package Marking and Ordering Information Device Marking FDS6982AS FDS6982AS FDS6982AS Device FDS6982AS FDS6982AS_NL (Note 4) FDS6982AS_NF40 (Note 5) Reel Size 13” 13” 13” Tape width 12mm 12mm 12mm Quantity 2500 units 2500 units 2500 units FDS6982AS Rev B ©2006 Fairchild Semiconductor Corporation FDS6982AS Electrical Characteristics Symbol BVDSS ∆BVDSS ∆TJ IDSS IGSS TA = 25°C 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 = 250 uA VGS = 0 V, ID = 1 mA, Referenced to 25°C ID = 250 µA, Referenced to 25°C VDS = 24 V, VGS = 0 V VGS = ±20 V, VDS = 0 V Type Min Typ Max Units Q2 Q1 Q2 Q1 Q2 Q1 Q2 Q1 Q2 Q1 Q2 Q1 Q2 30 30 28 24 500 1 ±100 V mV/°C µA nA Off Characteristics On Characteristics VGS(th) ∆VGS(th) ∆TJ RDS(on) Gate Threshold Voltage Gate Threshold Voltage Temperature Coefficient Static Drain-Source On-Resistance VDS = VGS, VDS = VGS, ID = 1 mA ID = 250 µA 1 1 1.4 1.9 –3.1 –4.3 11 16 13 20 26 25 3 3 V mV/°C ID = 1 mA, Referenced to 25°C ID = 250 uA, Referenced to 25°C VGS = 10 V, ID = 8.6 A VGS = 10 V, ID = 8.6 A, TJ = 125°C VGS = 4.5 V, ID = 7.5 A VGS = 10 V, ID = 6.3 A VGS = 10 V, ID = 6.3 A, TJ = 125°C VGS = 4.5 V, ID = 5.6 A VGS = 10 V, VDS = 5 V VDS = 5 V, VDS = 5 V, VDS = 10 V, f = 1.0 MHz ID = 8.6 A ID = 6.3 A VGS = 0 V, Q1 13.5 20.0 16.5 28 33 35 mΩ ID(on) gFS On-State Drain Current Forward Transconductance Q2 Q1 Q2 Q1 Q2 Q1 Q2 Q1 Q2 Q1 Q2 Q1 30 20 32 19 1250 610 410 180 130 85 1.4 2.2 A S Dynamic Characteristics Ciss Coss Crss RG Input Capacitance Output Capacitance Reverse Transfer Capacitance Gate Resistance VGS = 15mV, f = 1.0 MHz pF pF pF Ω Switching Characteristics td(on) tr td(off) tf td(on) tr td(off) tf 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 (Note 2) VDD = 15 V, ID = 1 A, VGS = 10V, RGEN = 6 Ω VDD = 15 V, ID = 1 A, VGS = 4.5V, RGEN = 6 Ω Q2 Q1 Q2 Q1 Q2 Q1 Q2 Q1 Q2 Q1 Q2 Q1 Q2 Q1 Q2 Q1 9 10 6 7 27 24 11 3 12 12 13 14 19 15 10 5 18 20 12 14 44 39 20 6 22 22 23 25 34 27 20 10 ns ns ns ns ns ns ns ns FDS6982AS Rev B FDS6982AS Electrical Characteristics Symbol Parameter (continued) TA = 25°C unless otherwise noted Test Conditions (Note 2) Type Min Typ Max Units Switching Characteristics Qg(TOT) Qg Qgs Qgd Total Gate Charge at Vgs=10V Total Gate Charge at Vgs=5V Gate–Source Charge Gate–Drain Charge Q2: VDS = 15 V, ID = 11.5A Q1: VDS = 15 V, ID = 6.3A Q2 Q1 Q2 Q1 Q2 Q1 Q2 Q1 Q2 Q1 Q2 Q1 (Note 3) (Note 2) (Note 2) (Note 2) 21 11 12 6 3.1 1.8 3.6 2.4 30 15 16 9 nC nC nC nC Drain–Source Diode Characteristics and Maximum Ratings IS Trr Qrr Trr Qrr VSD Maximum Continuous Drain-Source Diode Forward Current Reverse Recovery Time Reverse Recovery Charge Reverse Recovery Time Reverse Recovery Charge Drain-Source Diode Forward Voltage IF = 11.5 A, diF/dt = 300 A/µs IF = 6.3 A, diF/dt = 100 A/µs VGS = 0 V, IS = 3 A VGS = 0 V, IS = 6 A VGS = 0 V, IS = 1.3 A 3.0 1.3 19 12 20 9 0.5 0.6 0.8 0.7 1.0 1.2 A ns nC ns nC V (Note 3) Q2 Q2 Q1 Notes: 1. RθJA 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. RθJC is guaranteed by design while RθCA is determined by the user's board design. a) 78°C/W when mounted on a 2 0.5in pad of 2 oz copper b) 125°C/W when mounted on a 0.02 in2 pad of 2 oz copper c) 135°C/W when mounted on a minimum pad. Scale 1 : 1 on letter size paper 2. Pulse Test: Pulse Width < 300µs, Duty Cycle < 2.0% 3. See “SyncFET Schottky body diode characteristics” below. 4. FDS6982AS_NL is a lead free product. The FDS6982AS_NL marking will appear on the reel label. 5. FDS6982AS_NF40 is a lead free product. The FDS6982AS_NF40 marking will appear on the reel label. FDS6982AS Rev B FDS6982AS Typical Characteristics: Q2 30 2.6 RDS(ON), NORMALIZED DRAIN-SOURCE ON-RESISTANCE VGS = 10V 3.0V 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 VGS = 2.5V ID, DRAIN CURRENT (A) 4.5V 3.5V 20 3.0V 3.5V 4.0V 4.5V 6.0V 10V 10 2.5V 0 0 0.5 1 1.5 VDS, DRAIN-SOURCE VOLTAGE (V) 2 0 10 20 ID, DRAIN CURRENT (A) 30 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 = 8.6A VGS = 10V 1.2 ID = 4.3 A 0.04 0.03 TA = 125 C 0.02 o 1 0.8 0.01 TA = 25 C o 0.6 -50 -25 0 25 50 75 o TJ, JUNCTION TEMPERATURE ( C) 100 125 0 2 4 6 8 VGS, GATE TO SOURCE VOLTAGE (V) 10 Figure 3. On-Resistance Variation with Temperature. 30 VDS = 5V 25 ID, DRAIN CURRENT (A) Figure 4. On-Resistance Variation with Gate-to-Source Voltage. 10 VGS = 0V 20 IS, REVERSE DRAIN CURRENT (A) 1 TA = 125 C 25 C o o 15 TA = 125 C 10 -55oC o 0.1 -55oC 5 25oC 0 1 1.5 2 2.5 3 VGS, GATE TO SOURCE VOLTAGE (V) 3.5 0.01 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. FDS6982AS Rev B FDS6982AS Typical Characteristics: Q2 10 VGS, GATE-SOURCE VOLTAGE (V) ID = 8.6A 8 VDS = 10V 6 15V 4 20V CAPACITANCE (pF) 2000 f = 1MHz VGS = 0 V 1600 1200 Ciss 800 Coss 400 Crss 2 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. 100 100µs ID, DRAIN CURRENT (A) 10 1ms 10ms 100ms 1s 10s DC 0.1 VGS = 10V SINGLE PULSE RθJA = 135oC/W TA = 25 C 0.01 0.1 1 10 VDS, DRAIN-SOURCE VOLTAGE (V) 100 o Figure 8. Capacitance Characteristics. 50 P(pk), PEAK TRANSIENT POWER (W) RDS(ON) LIMIT 40 SINGLE PULSE RθJA = 135°C/W TA = 25°C 30 1 20 10 0 0.001 0.01 0.1 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 0.2 0.1 0.1 0.05 0.02 0.01 RθJA(t) = r(t) * RθJA RθJA = 135°C/W P(pk) t1 t2 SINGLE PULSE 0.01 TJ - TA = P * RθJA(t) Duty Cycle, D = t1 / t2 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. FDS6982AS Rev B FDS6982AS Typical Characteristics Q1 20 2.6 RDS(ON), NORMALIZED DRAIN-SOURCE ON-RESISTANCE VGS = 10V 4.0V 3.5V VGS = 3.0V 16 ID, DRAIN CURRENT (A) 6.0V 2.2 12 4.5V 1.8 3.5V 8 3.0V 1.4 4.0V 4.5V 6.0V 4 1 10V 0 0 1 VDS, DRAIN-SOURCE VOLTAGE (V) 2 0.6 0 5 10 ID, DRAIN CURRENT (A) 15 20 Figure 12. On-Region Characteristics. Figure 13. On-Resistance Variation with Drain Current and Gate Voltage. 0.1 RDS(ON), ON-RESISTANCE (OHM) 1.6 RDS(ON), NORMALIZED DRAIN-SOURCE ON-RESISTANCE ID = 6.3A VGS = 10V ID = 3.15 A 0.08 1.4 1.2 0.06 TA = 125 C 0.04 o 1 0.8 0.02 TA = 25oC 0.6 -50 -25 0 25 50 75 100 o TJ, JUNCTION TEMPERATURE ( C) 125 150 0 2 4 6 8 VGS, GATE TO SOURCE VOLTAGE (V) 10 Figure 14. On-Resistance Variation with Temperature. 20 Figure 15. On-Resistance Variation with Gate-to-Source Voltage. 100 IS, REVERSE DRAIN CURRENT (A) VDS = 5V VGS = 0V 10 1 0.1 -55 C o ID, DRAIN CURRENT (A) 15 TA = 125 C 25oC o 10 TA = 125 C -55 C o o 0.01 0.001 5 25oC 0 1 1.5 2 2.5 3 VGS, GATE TO SOURCE VOLTAGE (V) 3.5 0.0001 0 0.2 0.4 0.6 0.8 1 1.2 VSD, BODY DIODE FORWARD VOLTAGE (V) 1.4 Figure 16. Transfer Characteristics. Figure 17. Body Diode Forward Voltage Variation with Source Current and Temperature. FDS6982AS Rev B FDS6982AS Typical Characteristics Q1 10 VGS, GATE-SOURCE VOLTAGE (V) ID = 6.3A 8 VDS = 10V 6 20V CAPACITANCE (pF) 800 f = 1MHz VGS = 0 V 600 Ciss 400 Coss 200 4 15V 2 Crss 0 0 3 6 Qg, GATE CHARGE (nC) 9 12 0 0 5 10 15 20 VDS, DRAIN TO SOURCE VOLTAGE (V) Figure 18. Gate Charge Characteristics. 100 RDS(ON) LIMIT ID, DRAIN CURRENT (A) 10 1ms 10ms 100ms