LM25037

UVLO

PGND

AGND

COMP

OUTB

OUTA

VCC

SS

RT1

REF

RES

CS

VIN

VIN

VOUT

RT2

FB

RAMP

Isolated

Feedback

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LM25037, LM25037-Q1

SNVS572E – JULY 2008 – REVISED JANUARY 2016

LM25037/-Q1 Dual-Mode PWM Controller With Alternating Outputs

1 Features

2 Applications

1

•

Qualified for Automotive Applications

•

Telecom Power Converters

•

AEC-Q100 Qualified With the Following Results:

•

Industrial Power Converters

•

Automotive Power Converters (Q1 Version)

–

Device Temperature Grade 1: –40°C to

+125°C Operating Junction Temperature

3 Description

–

Device HBM ESD Classification Level 2

The LM25037 PWM controller contains all the

–

Device CDM ESD Classification Level C4B

features necessary to implement balanced double-

•

Alternating Outputs for Double-Ended Topologies

ended power converter topologies, such as push-pull,

•

Ultra Wide Input Operating Range from 5.5 V to

half-bridge

and

full-bridge.

These

double-ended

topologies allow for higher efficiencies and greater

75 V

power densities compared to common single-ended

•

Current-Mode or Feed-Forward Voltage-Mode

topologies such as the flyback and forward. The

Control

LM25037 can be configured for either voltage mode

•

Programmable Maximum Duty Cycle Limit

or current mode control with minimum external

•

2% Feedback Reference Accuracy

components. Two alternating gate drive outputs are

provided, each capable of 1.2-A peak output current.

•

High Gain-Bandwidth Error Amplifier

The LM25037 can be configured to operate directly

•

Programmable Line Undervoltage Lockout (UVLO)

from the input voltage rail over an ultra-wide range of

With Adjustable Hysteresis

5.5

V

to

75

V.

Additional

features

include

•

Versatile Dual Mode Overcurrent Protection With

programmable

maximum

duty

cycle

limit,

line

undervoltage lockout, cycle-by-cycle current limit and

Hiccup Delay Timer

a hiccup mode fault protection with adjustable timeout

•

Programmable Soft-Start

delay, soft-start and a 2-MHz capable oscillator with

•

Precision 5-V Reference Output

synchronization capability, precision reference and

•

Current Sense Leading Edge Blanking

thermal shutdown.

•

Resistor Programmed 2-MHz Capable Oscillator

Device Information(1)

•

Oscillator Synchronization Capability With Low-

PART NUMBER

PACKAGE

BODY SIZE (NOM)

Frequency Lockout Protection

LM25037

TSSOP (16)

5.00 mm × 4.40 mm

•

16-Pin TSSOP

LM25037-Q1

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

the end of the data sheet.

Simplified Push-Pull Power Converter

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.