RT9600

Preliminary

www.richtek-ic.com.tw

DS9600-00 July 2001

2

Pin Description

Pin No. Pin Name

Pin Function

1

UGATE

Upper Gate Drive Output. Connect to gate of high-side power N-Channel MOSFET

2

BOOT

Floating bootstrap supply pin for upper gate drive.

3

PWM

Input PWM signal for controlling the driver.

4

GND

Ground

5

LGATE

Lower gate drive output. Connect to gate of low-side power N-Channel MOSFET.

6

VCC

+12V Supply Voltage

7

PVCC

Upper Gate Drive Supply Bias. Typical +12V

8

PHASE

Connect this pin to the source of the high-side MOSFET and the drain of the low-side

MOSFET

Function Block Diagram

Typical Application Circuit

Shoot-

through

Protect

PVCC

High Side

Short-CKT

Protection

Control

Logic

BOOT

UGATE

LGATE

GND

Phase

PWM

Internal

500K

500K

5V

PWM

PVCC

VCC

BOOT

UGATE

PHASE

LGATE

GND

1

2

3

4

5

6

7

8

RT9600

+12V

1

µF

PWM

1

µF

1

µF

100

µF

SANYO OS-CON 16V

PHB83NO3LT

PHB95NO3LT

L3

1

µH

1000

µF

1000

µF

VCORE

ISEN2

ISN2

There 2 PCB trace have to parallel and place R near to PWM IC

+12V