UCC2882 - Average Current Mode Synchronous Controller

Unitrode

Datasheet Details

Part number	UCC2882
Manufacturer	Unitrode
File Size	492.05 KB
Description	Average Current Mode Synchronous Controller
Datasheet	UCC2882 Datasheet

General Description

The UCC3882 combines high precision reference and voltage monitoring circuitry with average current mode PWM synchronous rectification controller circuitry to power high-end microprocessors with a minimum of external components.

The UCC3882 converts 5V or 12V to an adjustable output ranging from 1.8VDC to 2.05VDC in 50mV steps and 2.1VDC to 3.5VDC in 100mV steps with 1% DC system accuracy.

The DAC output voltage is directly compatible with Intel’s 5-bit VID code (Table 1) which covers 1.3V to 2.05V in 50mV steps and 2.1V to 3.5V in 100mV steps.

Overview

UCC2882/-1 UCC3882/-1 Average Current Mode Synchronous Controller With 5-Bit.

Key Features

Combined DAC/Voltage Monitor and PWM with Synchronous Rectification Functions.
5-Bit Digital-to-Analog (DAC) Converter.
1% DAC/Reference Combined Accuracy.
Compatible with 5V and 12V Systems and 12V-only Systems.
Low Offset Current Sense Amplifier.
Programmable Oscillator Frequency Practical to 700kHz.
Foldback Current Limiting.
Overvoltage and Undervoltage Fault Windows.
2Ω Totem Pole Outputs with Programmable Dea.

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