TI UCC28C43－Q1 BiCMOS低功耗电流模式PWM控制方案

摘要: TI公司的UCC28C43-Q1是 BiCMOS高性能低功耗电流模式PWM控制器,满足AEC-Q100规范,工作温度-40⁰C到125⁰C,HBM分类为Level 2: ±2 kV, CDM分类Level C4B: 750 V,工作频率1MHz,峰值输出电流±1-A,主要用在汽车电源,混合和电动汽车,开关电源,DC/DC转换器,板安装电源模块.本文介绍了UCC28C43-Q1主要特性,功能框图, 汽车应用电路图,以及汽车应用40V-1kV输入反激参考设计TIDA-01505主要特性和系统指标,框图,电路图和材料清单.

The UCC28C4x-Q1 family devices are high performance current-mode PWM controllers. They are enhanced BiCMOS versions with pin-for-pin compatibility to the industry standard UC28C4x family PWM controllers.

Providing necessary features to control fixed frequency, peak current mode power supplies, this family offers several performance advantages. These devices offer high frequency operation up to 1 MHz with low start up and operating currents, thus minimizing start up loss and low operating power consumption for improved efficiency. The devices

also feature a fast current sense to output delay time of 35 ns, and a ±1-A peak output current capability with improved rise and fall times for driving large external MOSFETs directly.

The UCC28C4x-Q1 family is offered in the 8-pin SOIC (D) package.

UCC28C43-Q1主要特性:

1• AEC-Q100 Qualified with the Following Results:

– Device Temperature Grade 1:-40⁰C to 125⁰C

– Device HBM Classification Level 2: ±2 kV

– Device CDM Classification Level C4B: 750 V

• 1-MHz Operation

• 50-μA Standby Current, 100-μA Maximum

• Low Operating Current of 2.3 mA at 52 kHz

• Fast 35-ns Cycle-by-Cycle Over-Current Limiting

• ±1-A Peak Output Current

• Rail-to-Rail Output Swings With 25-ns Rise and 20-ns Fall Times

• ±1% Initial Trimmed 2.5-V Error Amplifi...