UCC28050

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Transition mode PFC controller with 15.6V/9.7V UVLO and IEC61000-3-2 compliance 0°C to 70°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) 15.8/9.7 Features OVP, Supports Flyback, Transition Mode Control Rating Catalog Operating temperature range (C) -40 to 85 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
No results found. Please clear your search and try again. View all 3
Type Title Date
* Datasheet UCC2805x, UCC3805x Transition Mode PFC Controller datasheet (Rev. G) May 05, 2015
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

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

REFERENCE DESIGNS Download
Universal AC Input, 24V/1A PFC-Flyback Reference Design
PMP11155 — This UCC28050-based reference design provides both isolation and power factor correction in a single stage.  The circuit is built on a 76mm by 50mm, two layer board.  The test report documents performance with regards to efficiency, power factor, thermal, EMI, and more.
document-generic Schematic
REFERENCE DESIGNS Download
90VAC-300VAC Input, 5V/10W Output PFC-Flyback With Synchronous Rectification
PMP6570 — The PMP6570 reference design uses the UCC28050 transition mode PFC controller to generate an isolated 5V/2A output from a universal 90VAC to 300VAC input. This design combines both power factor correction and output regulation in a single stage. In addition, the UCC24610 is used to control a (...)

CAD/CAE symbols

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

Ordering & quality

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  • MSL rating/Peak reflow
  • MTBF/FIT estimates
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  • Qualification summary
  • Ongoing reliability monitoring

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