Home Power management Offline & isolated DC/DC controllers & converters Power factor correction (PFC) controllers

UCC38050

ACTIVE
Order now

Transition mode PFC controller with 15.6V/9.7V UVLO and IEC61000-3-2 compliance, -40°C to 85°C

Data sheet
Top
Transition mode PFC controller with 15.6V/9.7V UVLO and IEC61000-3-2 compliance, -40°C to 85°C

UCC38050

ACTIVE
Data sheet Order now

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) 15.8/9.7 Features OVP, Transition Mode Control Rating Catalog Operating temperature range (C) 0 to 70 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
 open-in-new Find other Power factor correction (PFC) controllers

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.

open-in-new Find other Power factor correction (PFC) controllers
Download

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 4
Type Title Date
* Datasheet UCC2805x, UCC3805x Transition Mode PFC Controller datasheet (Rev. G) May 05, 2015
User guides PR320 UCC28050 100-W PFC Ballast Pre-Regulator Aug. 16, 2004
Application notes UCC38050 100W Critical Conduction (PFC) Reference Design (Rev. A) May 03, 2004
User guides 100-W Universal Line Input PFC Boost Converter Using the UCC38050 (Rev. B) Feb. 12, 2004

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
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 (...)
View details

Design tools & simulation

SIMULATION TOOLS Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
View details
CALCULATION TOOLS Download
MathCAD Calculation Tool for UCC38050 Transition Mode PFC Controller
UCC38050-CALC — MathCAD application design tool for use with the UCC38050.
CALCULATION TOOLS Download
SLVC018B.ZIP (24 KB)

Reference designs

REFERENCE DESIGNS Download
PFC Flyback
PMP2614 — The PMP2614 is an isolated opto-less single-stage PFC flyback. The loop is closed to the primary side. The typical application is a 34V LED bus voltage generator.
Design files
View details

CAD/CAE symbols

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

Ordering & quality

Support & training

TI E2E™ forums with technical support from TI engineers

View all topics

Content is provided "as is" by 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, see TI support. ​​​​​​​​​​​​​​

Training series

View all TI training and videos

Videos

Related videos