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NCP1397A

High Performance Resonant Mode Controller with Integrated High-Voltage Drivers

ON Semiconductor 

NCP1397A, NCP1397B

High Performance Resonant

Mode Controller with

Integrated High-Voltage

Drivers

The NCP1397 is a high performance controller that can be utilized

in half bridge resonant topologies such as series resonant, parallel

resonant and LLC resonant converters. It integrates 600 V gate

drivers, simplifying layout and reducing external component count.

With its unique architecture, including a 500 kHz Voltage Controlled

Oscillator whose control mode permits flexibility when an ORing

function is required, the NCP1397 delivers everything needed to build

a reliable and rugged resonant mode power supply.

The NCP1397 provides a suite of protection features with

configurable settings to optimize any application. These include:

auto−recovery or fault latch−off, brown−out, open optocoupler,

soft−start and short−circuit protection. Deadtime is also adjustable to

overcome shoot through current.

Features

• High−Frequency Operation from 50 kHz up to 500 kHz

• 600 V High−Voltage Floating Driver

• Adjustable Minimum Switching Frequency with $3% Accuracy

• Adjustable Deadtime from 100 ns to 2 ms.

• Startup Sequence Via an Externally Adjustable Soft−Start

• Brown−Out Protection for a Simpler PFC Association

• Latched Input for Severe Fault Conditions, e.g. Over Temperature or

OVP

• Timer−Based Input with Auto−Recovery Operation for Delayed

Event Reaction

• Latched Overcurrent Protection

• Disable Input for Immediate Event Reaction or Simple ON/OFF

Control

• VCC Operation up to 20 V

• Low Startup Current of 300 mA

• 1 A / 0.5 A Peak Current Sink / Source Drive Capability

• Common Collector Optocoupler Connection for Easier ORing

• Optional Common Emitter Optocoupler Connection

• Internal Temperature Shutdown

• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS

Compliant

http://onsemi.com

1

16

6

1

SO−16, LESS PIN 13

D SUFFIX

1

CASE 751AM

MARKING

DIAGRAMS

NCP1397xG

AWLYWW

x

= A or B

A

= Assembly Location

WL = Wafer Lot

Y

= Year

WW = Work Week

G

= Pb−Free Package

PIN CONNECTIONS

CSS(dis) 1

Fmax 2

Ctimer 3

Rt 4

BO 5

FB 6

DT 7

Skip/Disable 8

16 Vboot

15 Mupper

14 HB

12 VCC

11 Mlower

10 GND

9 Fault

(Top View)

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 26 of this data sheet.

Typical Applications

• Flat Panel Display Power Converters

• High Power ac−dc Adapters for Notebooks

• Computing Power Supplies

• Industrial and Medical Power Sources

• Offline Battery Chargers

© Semiconductor Components Industries, LLC, 2009

1

October, 2009 − Rev. 0

Publication Order Number:

NCP1397/D

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