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UCC28810D 概述

The UCC28810 and UCC28811 are general lighting power controllers for low to medium power lumens applications requiring power factor correction and EMC compliance. It is designed for controlling a flyback, buck or boost converter operating in critical conduction mode. It features a transconductance voltage amplifier for feedback error processing, a simple current reference generator 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 critical conduction mode operation, the PWM circuit is self-oscillating with the turn-on being governed by a transformer zero energy detector (TZE pin) and the turn-off being governed by the current sense comparator. Additionally, the controller provides features such as peak current limit, restart timer, overvoltage protection (OVP), and enable.

UCC28810D 特色

* Transition Mode Controller for Low Implementation Cost of AC Input LED Lighting Applications

* Implements Single Stage Power Factor Corrected LED Driver

* Enhanced Transient Response With Slew-Rate Comparator

* Interfaces with Traditional Wall Dimmers

* Accurate Internal VREF for Tight Output Regulation

* Two UVLO Options

* Overvoltage Protection (OVP), Open-Feedback Protection and Enable Circuits

* ±750-mA Peak Gate Drive Current

* Low Start-Up and Operating Currents

* Lead (Pb)-Free Packages

UCC28810D 应用领域

* AC Input General Lighting Applications Using HB LEDs

* Industrial, Commercial and Residential Lighting Fixtures

* Outdoor Lighting: Street, Roadway, Parking, Construction and Ornamental LED Lighting Fixtures