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RT9605AGQV Datasheet(PDF) 2 Page - Richtek Technology Corporation |
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RT9605AGQV Datasheet(HTML) 2 Page - Richtek Technology Corporation |
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2 / 12 page  RT9605A Preliminary 2 DS9605A-05 August 2007 www.richtek.com All brandname or trademark belong to their owner respectively Typical Application Circuit Functional Pin Description UGATE1 (Pin 1), UGATE2 (Pin 17), UGATE3 (Pin 10) Upper Gate Drive Output. Should be connected to the upper MOSFET gate. BOOT1 (Pin 2), BOOT2 (Pin 16), BOOT3 (Pin 9) Floating bootstrap supply pin for the upper gate drive. Connect the bootstrap capacitor between this pin and the PHASE pin. The bootstrap capacitor provides the charge to turn on the upper MOSFET. NC (Pin 3) No connected. PWM1 (Pin 4), PWM2 (Pin 5), PWM3 (Pin 7) PWM input control signal. Connect this pin to the PWM output of the controller. If the PWM signal enters and remains within the shutdown window, are both UGATE and LGATE are drived low, disabling the output MOSFETs. GND [Pin 6, 12, 13, 18, Exposed Pad (25)] Chip power ground. The exposed pad must be soldered to a large PCB and connected to GND for maximum power dissipation. VDD (Pin 8) Supply Input. Connect to +5V stand-by power. Place a bypass capacitor between this pin and GND. PHASE1 (Pin 24), PHASE2 (Pin 19), PHASE3 (Pin 11) Upper driver return. Should be connected to the common node of upper and lower MOSFETs. The PHASE voltage is monitored for adaptive shoot-through protection. LGATE1 (Pin 23), LGATE2 (Pin 20), LGATE3 (Pin 14) Lower Gate Drive Output. Should be connected to the lower MOSFET gate. PVCC1 (Pin 22), PVCC2 (Pin 21), PVCC3 (Pin 15) Supply Input. Connect to +12V supply. Place a bypass capacitor between this pin and PGND. PHASE3 PHASE2 PHASE1 PI DACQ DACFB PGOOD PWM3 PWM2 ISP3 ISP2 VID0 VID2 VID3 VID4 VID1 VID5 3.3V 12V V CORE 5V 9 2 11 10 14 15 1 6 GND 15k 10nF 33pF 3k 4.7uF Optional Optional Optional 1uF 1uF 1uF 430 3k 16k 27k 10k 1.8k 110k 56k 27k 13k 6.8k 3.3k R R R RT8800 5.1k BOOT2 PWM3 PWM2 PWM1 BOOT1 LGATE3 PVCC3 PHASE3 UGATE3 BOOT3 12V 5V SB PHASE1 V IN PHASE2 V CORE PHASE3 124 22 23 9 10 11 15 14 3 8 20 21 19 17 16 7 5 4 2 GND 12V 12V 12V V IN 12V 1uF 1000uF 1uH 0 1uF 1uF 0 10 1uF 3.3nF 2.2 1uF 0 1uF 0 3.3uF 2.2 0.5uH 0.5uH 0.5uH 1uF 0 3.3nF 2.2 0 1uF 10uF x 4 1000uF x 12 RT9605A 1500uF x 4 12V V IN Optional Optional R DROOP R ICOMMON1 R ICOMMON2 R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 R15 R16 R17 R17 R18 R19 R20 R21 R22 R23 R24 R25 R26 R27 C1 C2 C3 C4 C8 C9 C10 to C13 C5 C6 C7 C14 C15 C16 C17 C18 C19 C20 C21 C22 C23 C24 to C35 C36 to C39 D1 D2 D3 Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 L1 L2 L3 |
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