UCC28220-Q1数据手册TI中文资料规格书

描述 Description

The UCC28220 is a BiCMOSinterleaved dual-channel PWM controller. Peak current mode control is used to ensure current sharing between the two channels. A precise maximum duty cycle clamp can be set to any value between 60% and 90% duty cycle per channel. UCC28220 has an UVLO turn-on threshold of 10 V for use in 12-V supplies. It has 8-V turn-off threshold.Additional features include a programmable internal slope compensation with a special circuit that ensures exactly the same slope is added to each channel. The UCC28220 is available in a 16-pin low-profile TSSOP package.

特性 Features

• Qualified for Automotive Applications
• 2-MHz High-Frequency Oscillator With 1-MHz Operation Per Channel
• Matched Internal Slope Compensation Circuits
• Programmable Maximum Duty Cycle Clamp 60% to 90% Per Channel
• Peak Current Mode Control With Cycle-by-Cycle Current Limit
• Current Sense Discharge Transistor for Improved Noise Immunity
• Accurate Line Undervoltage and Overvoltage Sense With Programmable Hysteresis
• Opto-Coupler Interface
• Operates From 12-V Supply
• Programmable Soft-Start
• APPLICATIONS
• High Output Current (50 A to 100 A) Converters
• Maximum Power Density Designs
• High-Efficiency 48-V Input with Low-Output Ripple Converters
• High-Power Offline, Telecom, and Datacom Power Supplies

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