UC2846中文资料CURRENT MODE PWM CONTROLLER数据手册UTC规格书

描述 Description

The UTC UC2846 control IC offers all necessary

特性 Features

foraccomplishment of fixed frequency, current mode control functions,however it contains the least external parts. The performance of thistechnique is superior to the others in better line regulation, enhancedload response characteristics while designing a simpler and easiercontrol loop for design. It owns topological advantages of inherentpulse-by-pulse current limiting, automatic symmetry correction forpush-pull converters, and the ability to parallel “power modules\" forequal current sharing.Protection loop includes soft start, built-in under-voltage lockoutand programmable current limit. The shutdown circuitry can provideeither a complete shutdown with automatic restart or the supplyoff-latch.In addition, many other features can also be available, includingfully latched operation, double pulse suppression, deadline adjust, anda ±1% trimmed bandgap reference.The UTC UC2846 features low outputs in the OFF state. FEATURES  Built-in under-voltage lockout Soft start Shutdown function 500kHZ operation Feed forward compensation ±1% bandgap reference Programmable pulse-by-pulse current limiting Improved load response characteristics Parallel operation capability for modular power systems Differential current sense amplifier with wide common mode range Double pulse suppression 500mA (Peak) totem-pole outputs Automatic symmetry correction in push-pull configuration