UCC28633D datasheet(1/79 Pages) TI

Part #	UCC28633D

Description	High-Power Flyback Controller with Primary-Side Regulation and Peak-Power Mode

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Manufacturer	TI [Texas Instruments]

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SD

GND

VSENSE

CS

HV

VDD

DRV

UCC28630

1

2

3

4

8

6

5

EMC

Filter

t

o

VAC

VOUT

18

18.5

19

19.5

20

20.5

21

0

10

20

30

40

50

60

70

Output Power (W)

+5% Limit

115V/60 Hz

230V/50 Hz

±5% Limit

C001

1% Typical

Product

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Technical

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UCC28630

UCC28631

UCC28632, UCC28633

SLUSBW3C – MARCH 2014 – REVISED MARCH 2015

UCC28630, UCC28631, UCC28632 and UCC28633, High-Power Flyback Controller

with Primary-Side Regulation and Peak-Power Mode

1 Features

3 Description

The UCC2863x targets high-power, primary-side

1

•

High-Power, Primary-Side Regulation for Output

regulated flyback converters. The powerful gate driver

Voltage and Current, No Opto-Coupler Required

and ability to operate in both CCM and DCM make

•

Continuous Conduction Mode (CCM) and

the device suitable for applications with a wide power

Discontinuous Conduction Mode (DCM) Operation

range. The peak power mode allows transient peak

power delivery up to 200% of nominal rating, with

•

Built-In 700-V Start-Up Current Source

only a 25% peak current increase, maximizing

•

Active X-Capacitor Discharge Function

transformer utilization.

(UCC28630 and UCC28633)

The transformer bias winding is used to sense output

•

Adjustable Constant-Current (CC) Mode Limiting

voltage for regulation, and for low-loss input voltage

(except for UCC28630)

sensing.

Advanced

sampling

and

processing

•

High Gate Drive Current 1-A Source and 2-A Sink

techniques

allow

CCM

operation,

and

deliver

•

Low Power Modes for <30-mW System Standby

excellent output voltage regulation performance for

opto-coupler-less designs at power levels of 100 W

•

Best-In-Class Light Load (10%) Efficiency >85%

and above.

for 65-W Nominal Power Design

•

Peak-Power Mode for Transient Overload

A high-voltage current source enables fast and

efficient start-up. Advanced light-load modes are

•

Shutdown Pin Interface for External NTC

deployed (including switching frequency modulation

•

Protections: Overvoltage, Overcurrent, Over-

and device sleep modes) to reduce both controller

Temperature, Overload Timer (UCC28630), AC

and system power consumption at no load and light

Line UV, Brownout and Pin Protections

load. These modes enable potential system designs

to meet 30-mW no-load power for power designs up

•

Frequency Dither to Ease EMI Compliance

to 30 W nominal, 60 W peak.

(except the UCC28632)

The device has been designed for ease-of-use and

2 Applications

incorporates many features to enable a wide range of

designs. Extensive protection features are included to

•

AC-DC Adapters for Notebook, Game Consoles,

simplify system design.

Printers

•

Open Frame SMPS for Industrial, Printer, White

Device Information

Goods, LCD Monitors

PART NUMBER

PACKAGE

BODY SIZE

•

Energy Efficient AC-DC Supplies for Nominal

UCC28630

Power 10-W to 65-W, (with up to 200% transient

UCC28631

peak power)

SOIC (7)

4.90 mm x 3.90 mm

UCC28632

UCC28633

4 Simplified Schematic

Typical Application Measured Regulation

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.

Similar Part No. - UCC28633D

Manufacturer	Part #	Datasheet	Description
Texas Instruments	UCC28633D	3Mb / 85P	[Old version datasheet] High-Power Flyback Controller with Primary-Side Regulation and Peak-Power Mode
Texas Instruments	UCC28633DR	3Mb / 85P	[Old version datasheet] High-Power Flyback Controller with Primary-Side Regulation and Peak-Power Mode

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Similar Description - UCC28633D

Manufacturer	Part #	Datasheet	Description
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