UCC28051

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Transition mode PFC controller with 12.5V/9.7V UVLO and IEC61000-3-2 compliance, -40°C to 85°C

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Product details

Parameters

Device type Single-phase PFC Control method TM Operating supply (Max) (V) 18 Operating supply current (mA) 4 UVLO thresholds on/off (V) 12.5/9.7 Features OVP, Supports Flyback, Transition Mode Control Rating Catalog Operating temperature range (C) -40 to 105 open-in-new Find other Power factor correction (PFC) controllers

Package | Pins | Size

PDIP (P) 8 93 mm² 9.81 x 9.43 SOIC (D) 8 19 mm² 3.91 x 4.9 open-in-new Find other Power factor correction (PFC) controllers

Features

  • Transition Mode PFC Controller for Low Implementation Cost
  • Industry Pin Compatibility With Improved Feature Set
  • Improved Transient Response With Slew-Rate Comparator
  • Zero Power Detect to Prevent Overvoltage Protection (OVP) During Light Load Conditions
  • Accurate Internal VREF for Tight Output Regulation
  • Two UVLO Options
  • OVP, Open-Feedback Protection, and Enable Circuits
  • ±750-mA Peak Gate Drive Current
  • Low Start-Up and Operating Currents
  • Lead (Pb)-Free Packages
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Description

The UCC38050 and UCC38051 are PFC controllers for low-to-medium power applications requiring compliance with IEC 1000-3-2 harmonic reduction standard. The controllers are designed for a boost preregulator operating in transition mode (also referred to as boundary-conduction mode or critical conduction-mode operation). They feature a transconductance voltage amplifier for feedback error processing, a simple multiplier for generating a current command proportional to the input voltage, a current-sense (PWM) comparator, PWM logic, and a totem-pole driver for driving an external FET.

In the transition mode operation, the PWM circuit is self-oscillating, with the turnon being governed by an inductor zero-current detector (ZCD pin), and the turnoff being governed by the current-sense comparator. Additionally, the controller provides features such as peak current limit, default timer, overvoltage protection (OVP) and enable.

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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet UCC2805x, UCC3805x Transition Mode PFC Controller datasheet (Rev. G) May 05, 2015
Technical articles Is PFC possible without input voltage sensing? Sep. 14, 2016
Technical articles PowerTips: Construct a low cost bridgeless PFC with an analog controller – Part I Nov. 20, 2014
Application note Analog Applications Journal 4Q 2014 Oct. 24, 2014
Application note Design a transition-mode, bridgeless PFC with a standard PFC controller Oct. 24, 2014
Application note High-Efficiency AC-DC TV Power Solutions: An Intelligent LED Backlight Scheme Jul. 15, 2011
User guide UCC28600 120-W Evaluation Module User's Guide (Rev. A) Oct. 19, 2006
User guide PR320 UCC28050 100-W PFC Ballast Pre-Regulator Aug. 16, 2004
Application note UCC38050 100W Critical Conduction (PFC) Reference Design (Rev. A) May 03, 2004
User guide 100-W Universal Line Input PFC Boost Converter (Rev. A) Feb. 03, 2004

Design & development

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

Hardware development

EVALUATION BOARD Download
99
Description
UCC28051 Evaluation Module is a 100-W offline AC-DC voltage converter with power factor correction (PFC). The power module was designed to show how the UCC28051 could be configured in an off-line power factor corrected preregulator. The module was designed to operate over a universal input range of (...)

Design tools & simulation

CALCULATION TOOL Download
MathCAD Calculation Tool for UCC38050 Transition Mode PFC Controller
UCC38050-CALC MathCAD application design tool for use with the UCC38050.

Reference designs

Many TI reference designs include the UCC28051 Use our reference design selection tool to review and identify designs that best match your application and parameters.

CAD/CAE symbols

Package Pins Download
PDIP (P) 8 View options
SOIC (D) 8 View options

Ordering & quality

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