Vishay Siliconix

SiP41111

Document Number: 74292

S-61214–Rev. A, 17-Jul-06

www.vishay.com

1

75 V/2 A Peak, Low Cost, High Frequency Half Bridge Driver

FEATURES

Topology

•

•

Lead (Pb)-free Product Available

(RoHS Compliant)

•

Bootstrap Supply Maximum Voltage to 75 VDC

•

Built-In Bootstrap Diode

• Fast Propagation Times Meet High Frequency

Converter Circuits

•

Drives 1000 pF Load with Rise and Fall Times Typical

15 ns to meet 400 kHz typical Switching Requirement

•

Independent Driver Channel for Two Switch Forward and

Active Clamp Forward Topologies

•

Low Power Consumption

•

Supply Under Voltage Lockout

APPLICATIONS

•

Half Bridge Converter

•

Two-Switch Forward Converters

•

Active Clamp Forward Converters

•

Bus Converters

DESCRIPTION

SiP41111 is the MOSFET driver, which is designed to sim-

plify the converter design for the topologies, which requires

the high-side switch such as half bridge, two switch forward

and active clamping forward. The high-side and low-side

drivers can be configured to meet different driving require-

ment for these topologies because the high-side and low

side drivers are independent controlled. The built-in boot-

strap diode eliminates the external diode to improve the flex-

the abnormal operation

.

TYPICAL APPLICATION CIRCUIT

V

HB

HO

HS

LO

V

HI

LI

DD

SS

+ 48 V

+ 12 V

+

SiP41111

PWM Controller

GND

+

RoHS

COMPLIANT