LM5035

UVLO

AGND

PGND

COMP

HO

LO

SS

RT

RAMP

VIN

OVP

SR1

SR2

VPWR

Error Amplifier

and Isolation

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LM5035

SNVS428H – JANUARY 2006 – REVISED OCTOBER 2015

LM5035 PWM Controller With Integrated Half-Bridge and SyncFET Drivers

1 Features

3 Description

The

LM5035

half-bridge

controller-gate

driver

1

•

105-V, 2-A Half-Bridge Gate Drivers

contains all of the features necessary to implement

•

Synchronous Rectifier-Control Outputs With

half-bridge topology power converters using voltage

Programmable Delays

mode control with line voltage feedforward. The

•

High-Voltage (105-V) Start-up Regulator

floating high-side gate driver is capable of operating

with supply voltages up to 105 V. Both the high-side

•

Voltage Mode Control With Line Feedforward and

and low-side gate drivers are capable of 2-A peak. An

Volt-Second Limiting

internal high voltage start-up regulator is included,

•

Resistor Programmed, 2-MHz Capable Oscillator

along with programmable line undervoltage lockout

•

Patent Pending Oscillator Synchronization

(UVLO) and overvoltage protection (OVP). The

oscillator is programmed with a single resistor to

•

Programmable Line Undervoltage Lockout

frequencies up to 2 MHz. The oscillator can also be

•

Line Overvoltage Protection

synchronized to an external clock. A current sense

•

Internal Thermal Shutdown Protection

input and a programmable timer provide cycle-by-

cycle current limit and adjustable hiccup mode

•

Adjustable Soft-Start

overload protection.

•

Versatile Dual Mode Overcurrent Protection With

Hiccup Delay Timer

Device Information(1)

•

Cycle-by-Cycle Overcurrent Protection

PART NUMBER

PACKAGE

BODY SIZE (NOM)

•

Direct Optocoupler Interface

HTSSOP

6.50 mm × 4.40 mm

PowerPAD™ (20)

•

5-V Reference Output

LM5035

WQFN (24)

5.00 mm × 4.00 mm

2 Applications

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

the end of the data sheet.

•

Industrial Power Converters

•

Telecom Power Converters

Simplied Application 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.