LLC resonant controller with high voltage start up enabling low standby power
Product details
Parameters
Package | Pins | Size
Features
- 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
All trademarks are the property of their respective owners.
Description
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 | |
---|---|---|---|
* | Datasheet | UCC256302 Hybrid Hysteretic Mode Wide VIN LLC Resonant Controller datasheet | Nov. 02, 2017 |
Application note | Improving Transient Response in LLC Converters Using Hybrid Hysteretic Control (Rev. B) | Apr. 07, 2021 | |
Application note | Migrating to UCC25640x from UCC25630x (Rev. A) | Dec. 10, 2019 | |
Application note | Exceeding Modern Energy Standards with 'Always On' PFC and LLC Controllers (Rev. B) | Aug. 01, 2019 | |
Application note | Improving ZVS and efficiency in LLC converters | Nov. 05, 2018 | |
Application note | UCC25630x Practical Design Guidelines (Rev. A) | Dec. 08, 2017 | |
Selection guide | UCC25630x Selection Guide | Aug. 29, 2017 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
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 (...)
Features
- Optimized low power features enable extreme low standby power
- Advanced burst mode with adaptive threshold
- Improved capacitive region avoidance scheme
- Adaptive dead-time
- X-capacitor discharge
Design tools & simulation
Reference designs
Design files
-
download PMP40379 BOM.pdf (105KB) -
download PMP40379 Assembly Drawing.pdf (233KB) -
download PMP40379 PCB.pdf (1395KB) -
download PMP40379 CAD Files.zip (2168KB) -
download PMP40379 Gerber.zip (1226KB)
Design files
-
download PMP21683 BOM.pdf (104KB) -
download PMP21683 Assembly Drawing.pdf (232KB) -
download PMP21683 PCB.pdf (818KB) -
download PMP21683 CAD Files.zip (1004KB) -
download PMP21683 Gerber.zip (1646KB)
Design files
-
download PMP30522 BOM.pdf (100KB) -
download PMP30522 Assembly Drawing.pdf (289KB) -
download PMP30522 PCB.pdf (537KB) -
download PMP30522 CAD Files.zip (873KB) -
download PMP30522 Gerber.zip (95KB)
Design files
-
download PMP21582 BOM.pdf (161KB) -
download PMP21582 Assembly Drawing.pdf (328KB) -
download PMP21582 PCB.pdf (1055KB) -
download PMP21582 CAD Files.zip (894KB) -
download PMP21582 Gerber.zip (2564KB)
Design files
-
download PMP21000 BOM.pdf (92KB) -
download PMP21000 Assembly Drawing.pdf (133KB) -
download PMP21000 PCB.pdf (635KB) -
download PMP21000 CAD Files.zip (877KB) -
download PMP21000 Gerber.zip (1480KB)
Design files
-
download PMP40281 BOM.pdf (63KB) -
download PMP40281 Assembly Drawing.pdf (189KB) -
download PMP40281 PCB.pdf (499KB) -
download PMP40281 CAD Files.zip (1346KB) -
download PMP40281 Gerber.zip (485KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
SOIC (DDB) | 14 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
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