UCC256302
LLC resonant controller with high voltage start up enabling low standby power
Pin-for-pin with same functionality to the compared device
UCC256302
- Integrated High Voltage Startup
- Eliminates Need for External
Bias Supply
- Eliminates Need for External
- Best-in-Class Transient Response
- Hybrid Hysteretic Control (HHC)
- Best-in-Class Transient Response
- Easy Compensation Design
- Optimized Low Power Features Enable 75 mW
Standby Power Design with PFC on- Advanced Burst Mode
Opto-Coupler Low Power Operation - Helps Enable Compliance to CoC Tier II Standard
- Advanced Burst Mode
- Fast Exit from Burst Mode
- Improved Capacitive Region Avoidance Scheme
- Adaptive Dead-Time
- Internal High-Side Gate Drivers
(0.6-A and 1.2-A Capability) - Robust Soft Start with No Hard Switching
- Over Temperature, Output Over Voltage, Input
Over and Under Voltage Protection with
Three Levels of Over Current Protections - Wide Operating Frequency Range
(35 kHz to 1 MHz) - Select the appropriate LLC resonant controller for your design with UCC25630x Selection GuideUCC25630x Selection Guide
- Create a Custom Design Using the UCC256302 With the WEBENCH® Power Designer
The UCC256302 is a fully featured LLC controller with integrated high-voltage gate driver. It has been designed for use in offline AC-DC or isolated DC-DC to provide a complete power system using a minimum of external components. The resulting power system is designed to meet the most stringent requirements for standby power without the need for a separate standby power converter.
UCC256302 includes an integrated, high voltage startup function which eliminates the need for an external bias supply, reducing BOM count and minimizing solution size. UCC256302 uses hybrid hysteretic control to provide best in class line and load transient response. The control makes the open loop transfer function a first order system so that it’s very easy to compensate.
UCC256302 provides a high efficient burst mode with consistent burst power level during each burst on cycle. The burst power level is programmable and adaptively changes with input voltage, making the optimization of efficiency very easy.
Select the appropriate LLC resonant controller for your design with UCC25630x Selection Guide
Technical documentation
Type | Title | Date | ||
---|---|---|---|---|
* | Data sheet | UCC256302 Hybrid Hysteretic Mode Wide VIN LLC Resonant Controller datasheet | 02 Nov 2017 | |
Application note | Improving Transient Response in LLC Converters Using Hybrid Hysteretic Control (Rev. B) | 07 Apr 2021 | ||
Application note | Migrating to UCC25640x from UCC25630x (Rev. A) | 10 Dec 2019 | ||
Application brief | Exceeding Modern Energy Standards with 'Always On' PFC and LLC Controllers (Rev. B) | 01 Aug 2019 | ||
Application note | Improving ZVS and efficiency in LLC converters | 05 Nov 2018 | ||
Application note | UCC25630x Practical Design Guidelines (Rev. A) | 08 Dec 2017 | ||
Selection guide | UCC25630x Selection Guide | 29 Aug 2017 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
UCC25630-1EVM-291 — UCC256301 LLC evaluation module
UCC25630-1EVM-291 is an EVM of LLC resonant half-bridge DC-DC power converter with LLC controller UCC256301. UCC25630-1EVM-291 accepts DC line input from 340Vdc to 410Vdc, AC input voltage from 85 VAC to 264 VAC, and outputs nominal 12Vdc with full load output power 120W, or full output current 10A.
PMP40379 — 500-W, single stage LLC power supply reference design for audio amplifier
PMP21683 — 48-V/550-W resonant converter reference design
PMP30522 — 110 VAC to 38 V at 2 A single stage LLC resonant converter reference design
PMP21582 — 260-W off-line multiple-output LLC-SRC reference design
PMP21000 — Single stage AC-DC auxless LLC resonant converter reference design
PMP40281 — LLC Resonant Converter Control Card Reference Design
Package | Pins | Download |
---|---|---|
SOIC (DDB) | 14 | View options |
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