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RT9629AZQW Datasheet(PDF) 1 Page - Richtek Technology Corporation

Part # RT9629AZQW
Description  Triple-Channel Synchronous Rectified Buck MOSFET Driver
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9629AZQW Datasheet(HTML) 1 Page - Richtek Technology Corporation

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RT9629A
®
DS9629A-05 July 2015
www.richtek.com
1
Copyright
2015 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
©
Triple-Channel Synchronous Rectified Buck MOSFET
Driver
General Description
The RT9629A is a high frequency, triple-channel
synchronous rectified buck MOSFET driver specifically
designed to drive six power N-MOSFETs. The part is
promoted to pair with Richtek's multiphase buck PWM
controller family for high-density power supply
implementation. The output drivers of RT9629A can
efficiently switch power MOSFETs at frequency 300kHz
typically. Operating in higher frequency should consider
the thermal dissipation carefully. The device implements
bootstrapping on the upper gate with only an external
capacitor and a diode required. This reduces circuit
complexity and allows the use of higher performance, cost
effective N-MOSFETs. All drivers incorporate adaptive
shoot-through protection to prevent upper and lower
MOSFETs from conducting simultaneously and shorting
the input supply. The RT9629A has also detected the fault
condition during initial start-up before the multi-phase PWM
controller takes control. As a result, the input supply will
latch into the shutdown state. The RT9629A comes in a
small footprint package with WQFN-24L 5x5 package.
Applications
Core Voltage Supplies for Desktop, Motherboard CPU
High Frequency Low Profile DC/DC Converters
High Current Low Voltage DC/DC Converters
Core Voltage Supplies for GFX Card
Features
Drive Six N-MOSFETs for 3-Phase Buck PWM Control
Shoot Through Protection
Embedded Bootstrap Diode
Support High Switching Frequency
Fast Output Rising Time
Tri-State PWM Input for Output Shutdown
Enable Control
Small 24-Lead WQFN Package
RoHS Compliant and Halogen Free
Simplified Application Circuit
VCCx
PHASE1
RT9629A
12V
VOUT
L1
VIN
L2
PHASE2
PWM1
PWM2
EN1
Chip Enable
EN2
PWM1
PWM2
GND
L3
PHASE3
PWM3
PWM3
EN3
Marking Information
RT9629AZQW : Product Number
YMDNN : Date Code
RT9629A
ZQW
YMDNN


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