HR1002A数据手册集成电路（IC）的ACDC转换器离线开关规格书PDF

描述 Description

The HR1002A is an enhanced LLC controller that provides robust adaptive dead-time adjustment (ADTA) and capacitive mode protection (CMP), as well as improved functional surge performance.

ADTA automatically inserts a dead time between the two complimentary gate outputs. This is ensured by keeping the outputs off while sensing the dV/dt current of the half-bridge switching node. ADTA simplifies the design and provides lower EMI, as well as higher efficiency.

The HR1002A incorporates capacitive mode protection, which prevents potentially destructive capacitive mode switching if the output is shorted or is severely overloaded. This feature protects the MOSFET during abnormal conditions to provide a robust converter.

The HR1002A has a configurable oscillator that sets both the maximum and minimum switching frequencies. To prevent excessive inrush current, it starts up at a configured maximum switching frequency and decays until the control loop takes over.

The HR1002A enters a controlled burst mode under light-load conditions to minimize power consumption and tighten the output regulation.

Full protection features include two-level over-current protection (OCP) with external latched shutdown, auto-recovery, brown-in and brownout, capacitive mode protection (CMP), and over-temperature protection (OTP).

The HR1002A requires minimal external components, and is available in an SOIC16-15 package.

特性 Features

• Over-Current Protection (OCP) with Configurable Delay for Enhanced Surge Performance
• Adaptive Dead-Time Adjustment (ADTA)
• Capacitive Mode Protection (CMP)
• 50% Duty Cycle, Variable Frequency Control for Resonant Half-Bridge Converter
• 600V High-Side Gate Driver with Integrated Bootstrap Diode, High-Accuracy Oscillator, and High dV/dt Immunity
• Operates Up to 600kHz
• Two-Level Over-Current Protection (OCP): Frequency Shift and Latched Shutdown with Configurable Duration
• Latched Disable Input for Easy Protection
• Remote On/Off Control and Brownout Protection through BO
• Configurable Burst Mode Operation under Light-Load Conditions
• Nonlinear Soft Start for Monotonic Output Voltage Rising
• Available in an SOIC16-15 Package

简介

HR1002A属于集成电路（IC）的ACDC转换器离线开关。由制造生产的HR1002AAC DC 转换器，离线开关该系列是元器件级控制产品，用于构建将交流市电转换为直流电（通常电压大幅降低）的设备。集成和未集成系统主要开关元件的器件均包括在内。由于高输入输出电压比，以及此类系统中通常需要隔离，这些器件通常与外部变压器配合使用。尽管通常使用定制变压器来实现此用途，但也有许多专门用于此用途的库存产品，请参见“开关转换器，SMPS 变压器”标题。