UCC25600 Controller Datasheet

UCC25600 Datasheet, PDF, Equivalent


Part Number

UCC25600

Description

8-Pin High-Performance Resonant Mode Controller

Manufacture

etcTI

Total Page 30 Pages
Datasheet
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UCC25600
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UCC25600
SLUS846C – SEPTEMBER 2008 – REVISED JUNE 2015
UCC25600 8-Pin High-Performance Resonant Mode Controller
1 Features
1 Variable Switching Frequency Control
• Programmable Minimum Switching Frequency
With 4% Accuracy (3% Accuracy at Temperature
Range: –20°C to 105°C)
• Programmable Maximum Switching Frequency
• Programmable Dead Time for Best Efficiency
• Programmable Soft-Start Time
• Easy ON and OFF Control
• Overcurrent Protection
• Overtemperature Protection
• Bias Voltage UVLO and Overvoltage Protection
• Integrated Gate Driver With 0.4-A Source and 0.8-
A Sink Capability
• Operating Temperature Range: –40°C to 125°C
• SOIC 8-Pin Package
2 Applications
• 100-W to 1-kW Power Supplies
• LCD, Plasma, and DLP® TVs
• Adaptors, Computing, and ATX Power Supplies
• Home Audio Systems
• Electronic Lighting Ballasts
3 Description
The UCC25600 high performance, resonant mode
controller is designed for dc-to-dc applications using
resonant topologies, especially the LLC half-bridge
resonant converter. This highly integrated controller
implements frequency modulation control and
complete system functions in only an 8-pin package.
Switching to the UCC25600 will greatly simplify the
system design and layout, and improve time to
market, all at a price point lower than competitive 16-
pin device offerings.
The internal oscillator supports the switching
frequencies from 40 kHz to 350 kHz. This high-
accuracy oscillator realizes the minimum switching
frequency limiting with 4% tolerance, allowing the
designer to avoid over-design of the power stage
and, thus, further reducing overall system cost. The
programmable dead time enables zero-voltage
switching with minimum magnetizing current. This
maximizes system efficiency across a variety of
applications. The programmable soft-start timer
maximizes design flexibility demanded by the varied
requirements of end equipment using a half-bridge
topology. By incorporating a 0.4-A source and 0.8-A
sink driving capability, a low cost, reliable gate driver
transformer is a real option.
The UCC25600 delivers complete system protection
functions including overcurrent, UVLO, bias supply
OVP, and overtemperature protection.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
UCC25600
SOIC (8)
3.91 mm × 4.90 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application Diagram
+
UCC25600
8 GD1
OC 3
5 GD2
RT 2
7 VCC
DT 1
6 GND
SS 4
VS
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.

UCC25600
UCC25600
SLUS846C – SEPTEMBER 2008 – REVISED JUNE 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 Typical Characteristics .............................................. 7
7 Detailed Description .............................................. 9
7.1 Overview ................................................................... 9
7.2 Functional Block Diagram ......................................... 9
7.3 Feature Description................................................. 10
7.4 Device Functional Modes........................................ 13
8 Application and Implementation ........................ 14
8.1 Application Information............................................ 14
8.2 Typical Application ................................................. 18
9 Power Supply Recommendations...................... 22
10 Layout................................................................... 22
10.1 Layout Guidelines ................................................. 22
10.2 Layout Example .................................................... 23
11 Device and Documentation Support ................. 24
11.1 Community Resources.......................................... 24
11.2 Trademarks ........................................................... 24
11.3 Electrostatic Discharge Caution ............................ 24
11.4 Glossary ................................................................ 24
12 Mechanical, Packaging, and Orderable
Information ........................................................... 24
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision B (June 2011) to Revision C
Page
• Added ESD Ratings 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
Changes from Revision A (September 2008) to Revision B
Page
• Changed Operating Temperature Range to match the Electrical Specifications. .................................................................. 1
2 Submit Documentation Feedback
Product Folder Links: UCC25600
Copyright © 2008–2015, Texas Instruments Incorporated


Features Product Folder Sample & Buy Technical Documents Tools & Software Support & Community UCC25600 SLUS846C – SEPTEM BER 2008 – REVISED JUNE 2015 UCC25600 8-Pin High-Performance Resonant Mode C ontroller 1 Features •1 Variable Swi tching Frequency Control • Programmab le Minimum Switching Frequency With 4% Accuracy (3% Accuracy at Temperature Ra nge: –20°C to 105°C) • Programmab le Maximum Switching Frequency • Prog rammable Dead Time for Best Efficiency • Programmable Soft-Start Time • Ea sy ON and OFF Control • Overcurrent P rotection • Overtemperature Protectio n • Bias Voltage UVLO and Overvoltage Protection • Integrated Gate Driver With 0.4-A Source and 0.8A Sink Capabil ity • Operating Temperature Range: 40°C to 125°C • SOIC 8-Pin Package 2 Applications • 100-W to 1-kW Power Supplies • LCD, Plasma, and DLP® TV s • Adaptors, Computing, and ATX Powe r Supplies • Home Audio Systems • E lectronic Lighting Ballasts 3 Description The UCC25600 high performance, resonant mode controller is designed.
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