UCC28633 Controller Datasheet

UCC28633 Datasheet, PDF, Equivalent


Part Number

UCC28633

Description

High-Power Flyback Controller

Manufacture

etcTI

Total Page 30 Pages
Datasheet
Download UCC28633 Datasheet


UCC28633
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UCC28630, UCC28631
UCC28632, UCC28633, UCC28634
SLUSBW3D – MARCH 2014 – REVISED DECEMBER 2017
UCC2863x, High-Power Flyback Controller
with Primary-Side Regulation and Peak-Power Mode
1 Features
1 High-Power, Primary-Side CV/CC Regulation
• Continuous Conduction Mode (CCM) and
Discontinuous Conduction Mode (DCM) Operation
• Built-In 700-V Start-Up Current Source
• Active X-Capacitor Discharge (UCC28630 and
UCC28633)
• Adjustable Constant-Current (CC) Mode Limiting
(except for UCC28630)
• High Gate Drive Current 1-A Source and 2-A Sink
• Low Power Modes for <30-mW System Standby
• Best-In-Class Light Load (10%) Efficiency >85%
• PSR design with no opto-coupler - can meet high
CM isolation & surge requirements
• VDD OVP for independent indirect output OV
under open-feedback fault conditions
• Peak-Power Mode for Transient Overload
• Shutdown Pin Interface for External NTC
• Protections: Overvoltage, Overcurrent, Over-
Temperature, Overload Timer (UCC28630), AC
Line UV, Brownout and Pin Protections
• Frequency Dither to Ease EMI Compliance
(except the UCC28632)
• Create a Custom Design Using the UCC2863x
With the WEBENCH® Power Designer
2 Applications
• AC-DC Adapters for Notebook, Game Consoles,
Printers
• Open Frame SMPS for Industrial, Printer, White
Goods, LCD Monitors
• Energy Efficient AC-DC Supplies for Nominal
Power 10-W to 65-W, (with up to 200% transient
peak power)
Simplified Schematic
VAC
EMC
Filter
VOUT
1 VSENSE
HV 8
2 SD
to
UCC28630
3 CS
VDD 6
4 GND
DRV 5
3 Description
The UCC2863x targets high-power, primary-side
regulated flyback converters. The ability to operate in
both CCM and DCM make the device suitable for
applications with a wide power range. The peak
power mode allows transient peak power delivery up
to 200% of nominal rating, with only a 25% peak
current increase, maximizing transformer utilization.
The transformer bias winding is used to sense output
voltage for regulation, and for low-loss input voltage
sensing. Advanced sampling techniques allow CCM
operation, and deliver excellent output voltage
regulation performance for opto-coupler-less designs
at power levels of 100 W and above.
A high-voltage current source enables fast and
efficient start-up. Advanced light-load modes are
deployed to reduce both controller and system power
consumption at no load and light load. These modes
enable potential system designs to meet 30-mW no-
load power for power designs up to 30 W nominal, 60
W peak.
The device has been designed for ease-of-use and
incorporates many features to enable a wide range of
designs. Extensive protection features are included to
simplify system design.
See the Device Comparison Table for details.
PART NUMBER
UCC28630
UCC28631
UCC28632
UCC28633
UCC28634
Device Information
PACKAGE
BODY SIZE
SOIC (7)
4.90 mm x 3.90 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application Measured Regulation
21
20.5
20
19.5
19
18.5
18
0
1% Typical
+5% Limit
115V/60 Hz
230V/50 Hz
±5% Limit
10 20 30 40 50 60 70
Output Power (W)
C001
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.

UCC28633
UCC28630, UCC28631
UCC28632, UCC28633, UCC28634
SLUSBW3D – MARCH 2014 – REVISED DECEMBER 2017
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 3
5 Device Comparison Table..................................... 5
6 Pin Configuration and Functions ......................... 5
7 Specifications......................................................... 6
7.1 Absolute Maximum Ratings ...................................... 6
7.2 ESD Ratings.............................................................. 6
7.3 Recommended Operating Conditions....................... 6
7.4 Thermal Information (UCC28630, UCC28631)......... 7
7.5 Thermal Information (UCC28632, UCC28633,
(UCC28630, UCC28634) ........................................... 7
7.6 Electrical Characteristics........................................... 8
7.7 Typical Characteristics ............................................ 10
8 Detailed Description ............................................ 13
8.1 Overview ................................................................. 13
8.2 Functional Block Diagram ....................................... 14
8.3 Feature Description................................................. 15
8.4 Device Functional Modes........................................ 52
9 Applications and Implementation ...................... 53
9.1 Application Information............................................ 53
9.2 Typical Application ................................................. 53
9.3 Dos and Don'ts........................................................ 73
10 Power Supply Recommendations ..................... 73
11 Layout................................................................... 74
11.1 Layout Guidelines ................................................. 74
11.2 Layout Example .................................................... 75
12 Device and Documentation Support ................. 76
12.1 Device Support...................................................... 76
12.2 Documentation Support ........................................ 76
12.3 Receiving Notification of Documentation Updates 76
12.4 Community Resources.......................................... 76
12.5 Trademarks ........................................................... 77
12.6 Electrostatic Discharge Caution ............................ 77
12.7 Glossary ................................................................ 77
13 Mechanical, Packaging, and Orderable
Information ........................................................... 77
2 Submit Documentation Feedback
Copyright © 2014–2017, Texas Instruments Incorporated
Product Folder Links: UCC28630 UCC28631 UCC28632 UCC28633 UCC28634


Features Product Folder Order Now Technical Doc uments Tools & Software Support & Com munity UCC28630, UCC28631 UCC28632, UC C28633, UCC28634 SLUSBW3D – MARCH 201 4 – REVISED DECEMBER 2017 UCC2863x, H igh-Power Flyback Controller with Prima ry-Side Regulation and Peak-Power Mode 1 Features •1 High-Power, Primary-Si de CV/CC Regulation • Continuous Cond uction Mode (CCM) and Discontinuous Con duction Mode (DCM) Operation • Built- In 700-V Start-Up Current Source • Ac tive X-Capacitor Discharge (UCC28630 an d UCC28633) • Adjustable Constant-Cur rent (CC) Mode Limiting (except for UCC 28630) • High Gate Drive Current 1-A Source and 2-A Sink • Low Power Modes for <30-mW System Standby • Best-In- Class Light Load (10%) Efficiency >85% • PSR design with no opto-coupler - c an meet high CM isolation & surge requi rements • VDD OVP for independent ind irect output OV under open-feedback fau lt conditions • Peak-Power Mode for T ransient Overload • Shutdown Pin Interface for External NTC • Protections: Overvoltage, O.
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