AP3783R中文资料Primary Side Regulated Switching Mode Power Supply Controller数据手册Diodes规格书

描述 Description

The AP3783R is a high frequency, high efficiency and high accuracy switching mode power supply controller to drive power MOSFET for 5V/2A battery charger/adapter applications. The controller regulates the output voltage and current in the primary side by piece-wise Pulse Frequency Modulation (p-PFM) in discontinuous conduction mode (DCM). The system operating frequency reduces linearly from heavy load to light load in each interval of the p-PFM, and enters constant current mode when the load current equals to the maximum system output current.
The AP3783R provides accurate constant voltage (CV), constant current (CC) and outstanding dynamic performance without requiring an opto-coupler. It also eliminates the need of loop compensation circuitry while maintaining stability.
The AP3783R provides valley turn-on function and 3-Segment drive current to improve the power supply EMI performance. The AP3783R also has built-in fixed cable voltage drop compensation (8%, 4% and 2% of nominal system output voltage to meet various cables with different length and gauge) and adjustable line voltage compensation.
The AP3783R achieves excellent regulation and high average efficiency, less than 2s startup time for 30mW standby power solution. When AP3783R is used with APR3415, good undershoot and efficiency performances can be achieved.
The AP3783R is packaged in SOT26.

特性 Features

Less than 75mW Standby Power Consumption
Meet Efficiency Requirement of COC Trier2
Valley Turn-on to Reduce Switching Loss and Improve EMI
Piece-wise Frequency Reduction to Enhance Conversion Efficiency and Suppress Audio Noise
Overvoltage Protection (OVP)
Overtemperature Protection (OTP)
Short Circuit Protection (SCP) with Hiccup

应用 Application

Adapters
Chargers
LED Lighting
Standby and Auxiliary Power Supplies

简介

AP3783R属于集成电路（IC）的ACDC转换器离线开关。由制造生产的AP3783RAC 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。