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SCY99080CDWR2G

High Performance Switch-Mode Power Supply Controller for Backlight and LLC Converters

ON Semiconductor 

Customer Specific Device from ON Semiconductor

DDA002C

High Performance

Switch-Mode Power Supply

Controller for Backlight and

LLC Converters

The DDA002C controller hosts a high performance

circuitry dedicated to driving half−bridge topologies, such

as lamp ballasts for backlighting applications or resonant

converters like the LLC circuit. The controller includes

everything needed to build a reliable and rugged converter,

including a pre−heating period and various protections such

as an adjustable brown−out, for instance. Both, minimum

and maximum switching frequencies, are adjustable by

single pull down resistor, offering the ability to operate

between 30 kHz and 500 kHz.

The controller includes a high−voltage driver that

simplifies the design of the half−bridge configuration due to

direct connection to the upper−side MOSFET. To avoid

large shoot−through currents, the circuit includes a deadtime

generator whose duration can be easily adjusted externally.

Finally, two additional ground−referenced outputs allow the

implementation of full−bridge applications.

Features

• High−Frequency Operation from 30 kHz up to 500 kHz

• Selectable Minimum Switching Frequency

• Adjustable Deadtime from 100 ns to 2 ms

• 100 ms Delayed Startup for PFC Stage Stabilization

• Adjustable Preheating Timer via External Capacitor

• Startup Sequence via Adjustable Soft−Start

• 600 V High−Voltage Floating Drivers

• Synchronized Low−Current Outputs for Full Bridge

Applications

• Adjustable Maximum On−Time Clamp for

Synchronization Outputs

• Brown−Out Protection for Easier PFC Association

• Delayed Open−Loop Protection

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

Current

• Secondary Latched Input for Over Temperature Protection

• Auto−Recovery Enable Input

• VCC Operation up to 20 V

• Low Startup Current of 300 mA

• 0.5 A / 0.25 A Peak Current Sink / Source Drive

Capability, Respectively

• Internal Temperature Shutdown

• SO19W package

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

and are RoHS Compliant

Typical Applications

• Flat Panel Display Power Converters

• LLC Converters Control for LCD/Plasma TVs

• HCFL / CCFL Backlight Inverters

MARKING DIAGRAMS

SOIC−19, LESS PIN 17

D SUFFIX

CASE 752AA

DDA002C

AWLYYWWG

DDA002C = Specific Device Code

A

= Assembly Location

WL = Wafer Lot

YY

= Year

WW = Work Week

G

= Pb−Free Package

BO

CIG

Dgs

SS

R_Fmin

R_Fmax

FB

OTP_latch

DT

EN1

PIN CONNECTIONS

Boot

Hgd

HB

Vcc

DDA002C

Lgd

Gnd

Hgs

Lgs

EN2

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 26 of this data sheet.

*For additional information on our Pb−Free strategy

and soldering details, please download the ON

Semiconductor Soldering and Mounting Techniques

Reference Manual, SOLDERRM/D.

© Semiconductor Components Industries, LLC, 2009

1

July, 2009 − Rev. 0

Publication Order Number:

DDA002C/D

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