RT9602 Datasheet, PDF (1/8 Pages) Richtek Technology Corporation – DUAL CHANNEL SYNCHRONOUS-RECTIFIED BUCK MOSFET DRIVER

Preliminary
RT9602
Dual Channel Synchronous-Rectified Buck MOSFET Driver
General Description
The RT9602 is a, twin power channel MOSFET driver
specifically designed to drive four power N-Channel
MOSFETs in a synchronous-rectified buck converter
topology. These drivers combined with a
RT9237/RT9241 series of Multi-Phase Buck PWM
controller provide a complete core voltage regulator
solution for advanced microprocessors.
The RT9602 can provide flexible gate driving for both
high side and low side drivers. This gives more
flexibility of MOSFET selection.
The output drivers in the RT9602 have the capability
to drive a 3000pF load with a 40ns propagation delay
and 80ns transition time. This device implements
bootstrapping on the upper gates with only a single
external capacitor required for each power channel.
This reduces implementation complexity and allows
the use of higher performance, cost effective, N-
Channel MOSFETs. Adaptive shoot-through
protection is integrated to prevent both MOSFETs
from conducting simultaneously.
The RT9602 can detect high side MOSFET drain-to-
source electrical short at power on and pull the 12V
power by low side MOS and cause power supply to
go into over current shutdown to prevent damage of
CPU.
Ordering Information
RT9602… …
Package type
S : SOP-14
Operating temperature range
C: Commercial standard
Features
z Drives Four N-Channel MOSFETs
z Adaptive Shoot-Through Protection
z Internal Bootstrap Devices
z Small 14-Lead SOIC Package
z 5V to 12V Gate-Drive Voltages for Optimal
Efficiency
z Tri-State Input for Bridge Shutdown
z Supply Under-Voltage Protection
z Power ON Over-Voltage Protection
Applications
z Core Voltage Supplies for Intel Pentium 4 and
AMD Athlon^TM Microprocessors
z High Frequency Low Profile DC-DC Converters
z High Current Low Voltage DC-DC Converters
Pin Configurations
Part Number
Pin Configurations
RT9602CS
(Plastic SOP-14)
TOP VIEW
PWM1 1
PWM2 2
GND 3
LGATE1 4
PVCC 5
PGND 6
LGATE2 ⁷
14 _VCC
13 _PHASE1
12 UGATE1
11 _BOOT1
10 _BOOT2
9 _UGATE2
8 PHASE2
DS9602-00 January 2002
www.richtek-ic.com.tw
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