UCC28600 Controller Datasheet

UCC28600 Datasheet, PDF, Equivalent


Part Number

UCC28600

Description

8-Pin Quasi-Resonant Flyback Green-Mode Controller

Manufacture

etcTI

Total Page 30 Pages
Datasheet
Download UCC28600 Datasheet


UCC28600
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Design
UCC28600
SLUS646K – NOVEMBER 2005 – REVISED AUGUST 2015
UCC28600 8-Pin Quasi-Resonant Flyback Green-Mode Controller
1 Features
1 Green-Mode Controller With Advanced Energy
Saving Features
• Quasi-Resonant Mode Operation for Reduced
EMI and Low Switching Losses (Low-Voltage
Valley Switching)
• Low Standby Current for Minimum System No-
Load Power Consumption
• Low Start-up Current: 25-μA Maximum
• Programmable Line and Load Over-Voltage
Protection
• Internal Over-Temperature Protection
• Current Limit Protection
– Cycle-by-Cycle Power Limit
– Primary-Side Over-Current Hiccup Restart
Mode
• 1-A Sink, –0.75-A Source TrueDrive™ Gate Drive
Output
• Programmable Soft-Start
• Green-Mode Status Pin (PFC Disable Function)
2 Applications
• Bias Supplies for LCD-Monitors, LCD-TV, PDP-
TV, and Set Top Boxes
• AC-to-DC Adapters and Off-Line Battery Chargers
• Energy Efficient Power Supplies up to 200 W
3 Description
The UCC28600 is a PWM controller with advanced
energy features to meet stringent world-wide energy
efficiency requirements.
UCC28600 integrates built-in advanced energy
saving features with high-level protection features to
provide cost-effective solutions for energy-efficient
power supplies. UCC28600 incorporates frequency
fold-back and green-mode operation to reduce the
switching losses at light-load and no-load conditions.
UCC28600 is available in the 8-pin SOIC package.
Operating junction temperature range is –40°C to
+105°C.
The UCC28600 Design Calculator, (SLVC104),
located in the Tools and Software section of the
UCC28600 product folder, provides a user-interactive
iterative process for selecting recommended
component values for an optimal design.
Device Information (1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
UCC28600
SOIC (8)
4.90 mm × 3.91 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application Diagram
Primary
Secondary
CBULK
RSU
NP NS
UCC28051
1 VO_SNS VCC 8
2 COMP DRV 7
3 MULTIN GND 6
4 CS
ZCD 5
CB NB
18 V
CSS UCC28600
1 SS STATUS 8
2 FB
OVP 7
3 CS
VDD 6
Feedback
4 GND OUT 5
CBP
RPL
ROVP1
CVDD
ROVP2
M1
RCS
TL431
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.

UCC28600
UCC28600
SLUS646K – NOVEMBER 2005 – REVISED AUGUST 2015
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings ............................................................ 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 4
6.5 Electrical Characteristics........................................... 5
6.6 Timing Requirements ................................................ 6
6.7 Typical Characteristics .............................................. 7
7 Detailed Description .............................................. 8
7.1 Overview ................................................................... 8
7.2 Functional Block Diagram ......................................... 8
7.3 Feature Description................................................. 11
7.4 Device Functional Modes........................................ 18
8 Application and Implementation ........................ 21
8.1 Application Information............................................ 21
8.2 Typical Application ................................................. 21
8.3 Do's and Don'ts ...................................................... 33
9 Power Supply Recommendations...................... 34
10 Layout................................................................... 34
10.1 Layout Guidelines ................................................. 34
10.2 Layout Example .................................................... 35
11 Device and Documentation Support ................. 36
11.1 Device Support .................................................... 36
11.2 Documentation Support ....................................... 36
11.3 Trademarks ........................................................... 36
11.4 Electrostatic Discharge Caution ............................ 36
11.5 Glossary ................................................................ 36
12 Mechanical, Packaging, and Orderable
Information ........................................................... 37
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision J (July 2011) to Revision K
Page
• Added Pin Configuration and Functions section, ESD table, Feature Description section, Device Functional Modes,
Application and Implementation section, Power Supply Recommendations section, Layout section, Device and
Documentation Support section, and Mechanical, Packaging, and Orderable Information section. .................................... 1
• Changed Functional Block diagram........................................................................................................................................ 8
• Changed Control Flow Chart diagram .................................................................................................................................. 11
• Changed QR Detect Details image. ..................................................................................................................................... 13
• Changed Oscillator Details image. ....................................................................................................................................... 14
• Changed Fault Logic Details image...................................................................................................................................... 16
• Changed Mode Control with FB Pin Voltage image. ........................................................................................................... 18
• Changed Operation Mode Switching Frequencies image. .................................................................................................. 19
Changes from Revision H (November 2005) to Revision I
Page
• Changed Equation 35 .......................................................................................................................................................... 29
2 Submit Documentation Feedback
Product Folder Links: UCC28600
Copyright © 2005–2015, Texas Instruments Incorporated


Features Product Folder Sample & Buy Technical Documents Tools & Software Support & Community Reference Design UCC28600 S LUS646K – NOVEMBER 2005 – REVISED A UGUST 2015 UCC28600 8-Pin Quasi-Resonan t Flyback Green-Mode Controller 1 Feat ures •1 Green-Mode Controller With Ad vanced Energy Saving Features • Quasi -Resonant Mode Operation for Reduced EM I and Low Switching Losses (Low-Voltage Valley Switching) • Low Standby Curr ent for Minimum System NoLoad Power Con sumption • Low Start-up Current: 25- A Maximum • Programmable Line and Lo ad Over-Voltage Protection • Internal Over-Temperature Protection • Curren t Limit Protection – Cycle-by-Cycle P ower Limit – Primary-Side Over-Curren t Hiccup Restart Mode • 1-A Sink, – 0.75-A Source TrueDrive™ Gate Drive O utput • Programmable Soft-Start • G reen-Mode Status Pin (PFC Disable Funct ion) 2 Applications • Bias Supplies f or LCD-Monitors, LCD-TV, PDPTV, and Set Top Boxes • AC-to-DC Adapters and Off-Line Battery Chargers • Energy Efficient Power Supplies up .
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