DRIVER

DRIVER

LEVEL

SHIFT

UVLO

UVLO

HI

VDD

LI

VSS

HB

HO

HS

LO

HV

Adjustable

rising

edge delay

RT2

RT1

Adjustable

rising

edge delay

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LM5102

SNVS268B – MAY 2004 – REVISED DECEMBER 2014

LM5102 High-Voltage Half-Bridge Gate Driver With Programmable Delay

1 Features

3 Description

The LM5102 high-voltage gate driver is designed to

1

•

Drives Both a High-Side and Low-Side N-Channel

drive both the high side and the low side N-Channel

MOSFET

MOSFETs in a synchronous buck or a half bridge

•

Independently Programmable High and Low Side

configuration. The floating high-side driver is capable

Rising Edge Delay

of working with supply voltages up to 100 V. The

outputs are independently controlled. The rising edge

•

Bootstrap Supply Voltage Range up to 118 V dc

of each output can be independently delayed with a

•

Fast Turn-Off Propagation Delay (25 ns Typical)

programming resistor. An integrated high voltage

•

Drives 1000-pF Loads with 15-ns Rise and Fall

diode is provided to charge the high side gate drive

Times

bootstrap capacitor. A robust level shifter operates at

•

Supply Rail Undervoltage Lockout

high speed while consuming low power and providing

clean level transitions from control logic to the high

•

Low Power Consumption

side gate driver. Undervoltage lockout is provided on

•

Timer Can Be Terminated Midway Through

both the low side and the high side power rails. This

Sequence

device is available in the standard VSSOP 10 pin and

the WSON 10 pin packages.

2 Applications

Device Information(1)

•

Current Fed Push-Pull Power Converters

PART NUMBER

PACKAGE

BODY SIZE (NOM)

•

Half and Full Bridge Power Converters

VSSOP (10)

3.00 mm × 3.00 mm

•

Synchronous Buck Converters

LM5102

WSON (10)

4.00 mm × 4.00 mm

•

Two Switch Forward Power Converters

(1) For all available packages, see the orderable addendum at

•

Forward with Active Clamp Converters

the end of the data sheet.

Simplified Block Diagram

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.