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UCC28051 Datasheet PDF

Part Series:UCC28051 Series
Description:The UCC38050 and UCC38051 are PFC controllers for low-to-medium power applications requiring compliance with IEC 1000-3-2 harmonic reduction standard
Document:UCC28051D Datasheet PDF (35 Pages)

UCC28051 Datasheet PDF

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The UCC38050 and UCC38051 are PFC controllers for low-to-medium power applications requiring compliance with IEC 1000-3-2 harmonic reduction standard
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UCC28051 - TI Specifications

TYPE
DESCRIPTION
Case/Package
PDIP-8
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UCC28051 - TI Function Overview

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.
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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