15W Dual Isolated Output Bias Power Supply with 4mW Zero Standby Power Consumption Reference Design TIDA-01560 (ACTIVE)

Description & Features

Technical Documents

Support & Training

Order Now


See the Important Notice and Disclaimer covering reference designs and other TI resources.

Key Document

Description

This reference design is a 15-W bias power supply with two isolated outputs (12 V/1.125A and 3.3 V/0.3A) and a total standby power consumption of 4 mW under a 220-V AC input. The controller uses primary-side regulation (PSR) and detects a wake-up signal from the UCC24650 secondary-side voltage-droop monitor for improved transient response to large load steps. This reference design demonstrates how the UCC28730 can provide ultra-low standby power without sacrificing start-up time or output transient response with an internal 700-V start-up switch, dynamically controlled operating states, and a tailored modulation profile. The UCC28730 uses frequency modulation, peak primary current modulation, valley switching, and valley skipping in its control algorithm to maximize efficiency over the entire operating range.

Features
  • Enables zero-power standby consumption:
    • 3.1 mW at 115-V AC Input
    • 4.2 mW at 220-V AC Input
  • Average efficiency >84%, exceeds DoE VI and CoC tier 2 specifications
  • Primary-side regulation (PSR) eliminates optocoupler and increase reliability of bias power supply
  • Resonant-ring valley-switching operation for highest overall efficiency
  • Universal input voltage range (85V to 270V AC) to address customer needs across all regions
  • Dual isolated outputs of 12V and 3.3V is suitable for most industry applications
  • Frequency-dither to ease EMI compliance

See the Important Notice and Disclaimer covering reference designs and other TI resources.


  



Schematic/Block Diagram

Quickly understand overall system functionality.

Download Schematic

Design Guide

Get results faster with test and simulation data that's been verified.

Download Design Guide

Design Files

Download ready-to-use system files to speed your design process. Get Viewer.

Download Design Files


TI Devices (3)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
TLV743P  300mA Low-Dropout (LDO) Regulator  Power management  Sample & Buy View Design Kits & Evaluation Modules
UCC24650  200-V Wake-up Monitor for Fast Transient Primary-side Regulation  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules
UCC28730  Zero Standby PSR Flyback Controller with CVCC and Wake-Up Monitoring  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
TLV743P Download Download
Download Download
UCC24650 Download Download
UCC28730 Download Download

Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.

Step 1: Download and install the free download.

Step 2: Download the Symbol and Footprint from the CAD.bxl file table.


Technical Documents

See the Important Notice and Disclaimer covering reference designs and other TI resources.

User guides (1)
Title Type Size (KB) Date
PDF 1098 23 Mar 2018
Design files (6)
Title Type Size (KB) Date
ZIP 53 26 Mar 2018
ZIP 629 26 Mar 2018
PDF 564 26 Mar 2018
PDF 88 26 Mar 2018
PDF 78 26 Mar 2018
PDF 207 26 Mar 2018

Support & training

Search our extensive online knowledge base where millions of technical questions and answers are available 24/7.

Search answers from TI experts

Content is provided 'AS IS' by the respective TI and Community contributors and does not constitute TI specifications.
See terms of use.

If you have questions about quality, packaging, or ordering TI products visit our Support page.

Technical articles