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UCC25600

ACTIVE

8-pin high-performance resonant mode LLC controller

Product details

Control mode Voltage Features Disable, No high-voltage gate driver, Over Temperature Protection, Programmable Soft-start, Programmable soft start, Programmable switching frequency, Variable switching frequency control, Zero voltage switching Vin (min) (V) 11 Vin (max) (V) 18 Operating temperature range (°C) -40 to 125 Topology Full bridge, Half bridge, LLC Rating Catalog
Control mode Voltage Features Disable, No high-voltage gate driver, Over Temperature Protection, Programmable Soft-start, Programmable soft start, Programmable switching frequency, Variable switching frequency control, Zero voltage switching Vin (min) (V) 11 Vin (max) (V) 18 Operating temperature range (°C) -40 to 125 Topology Full bridge, Half bridge, LLC Rating Catalog
SOIC (D) 8 29.4 mm² 4.9 x 6
  • 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
  • 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

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.

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.

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Technical documentation

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Type Title Date
* Data sheet UCC25600 8-Pin High-Performance Resonant Mode Controller datasheet (Rev. C) PDF | HTML 02 Jul 2015
Technical article LLC 시리즈 공진 컨버터 상자를 벗어나 생각하기 PDF | HTML 22 Mar 2024
Technical article 跳出 LLC 串聯諧振轉換器的思維框架 PDF | HTML 20 Mar 2024
Technical article Think outside the LLC series resonant converter box PDF | HTML 22 Feb 2024
EVM User's guide LLC Resonant Half Bridge Converter 300 W Evaluation Module (Rev. A) 15 Nov 2018
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
White paper LLC Converter Small Signal Modeling (PPT) 02 Oct 2015
Technical article Power Tips: Why is your LLC resonant converter frequency way, way off PDF | HTML 27 Sep 2015
Application note Analysis and Measurement of Resonant Tank Current on LLC 30 Jul 2013
User guide A 600-W Input, Isolated PFC Power Supply for AVR Amplifiers. (Rev. C) 20 Sep 2012
More literature Designing an LLC Resonant Half-Bridge Power Converter 26 Jul 2011
Application note High-Efficiency AC-DC TV Power Solutions: An Intelligent LED Backlight Scheme 15 Jul 2011
Application note Feedback Loop Design of an LLC Resonant Power Converter (Rev. A) 24 Nov 2010
User guide A 90-W High-Efficiency, LLC Series-Resonant Converter 03 Nov 2010
User guide Isolated 240W Offline LED Driver Reference Design Using UCC28810, UCC28811, and 10 Jun 2010
Application note A 300-W, Universal Input, Isolated PFC Power Supply for LCD TV Applications (Rev. B) 19 Mar 2009

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

UCC25600EVM — LLC Resonant Half-Bridge Converter 300-W Evaluation Module

The UCC25600 evaluation module, EVM (HPA341), is a 300 W LLC resonant half-bridge converter, providing a regulated output voltage nominally at 12 V at maximum 300 W of load power with reinforced isolation of AC-DC off-line application between the primary and the secondary, operating (...)

User guide: PDF
Not available on TI.com
Simulation model

UCC25600 PSpice Transient Model

SLUM401.ZIP (98 KB) - PSpice Model
Simulation model

UCC25600 TINA-TI Reference Design

SLUM425.TSC (262 KB) - TINA-TI Reference Design
Simulation model

UCC25600 TINA-TI Transient Spice Model

SLUM426.ZIP (34 KB) - TINA-TI Spice Model
Calculation tool

UCC25600-DESIGN-CALC — Free Tool: Design Calculation Tool for Converters using UCC25600

The UCC25600 Design Tool is an Excel Spreadsheet based calculation sheet to help design an LLC half bridge converter using UCC25600. The tool helps design the power stage and program the IC setup parameters. The power stage design includes resonant tank, primary and secondary switches and magnetic (...)

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SOIC (D) 8 View options

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