MCP19125中文资料Digitally Enhanced Power Analog Current and Voltage Controller数据手册Microchip规格书

描述 Description

The MCP19125 is a mid-voltage (4.5-42V) analog-based PWM controller with an integrated 8-bit PICTM Microcontroller. This unique product family combines the performance of a high-speed analog solution, including high-efficiency and fast transient response, with the configurability and communication interface of a digital solution. Combining these solution types creates a new family of devices that maximizes the strengths of each technology to create a more cost-effective, configurable, high-performance power conversion solution. These products allow the development of flexible power supplies that can be configured perfectly to the target application with minimal external components. In addition, these devices can be programmed to dynamically respond to measurements or events within the system, dynamically tailoring the operation to the environment, or intelligently responding to faults for robust operation.This device contains two independent outer control loops, which can be configured with separate feedback networks, and separate references. The analog voltage loop can be set to control a constant voltage, or the analog current loop can be used to set a constant current on the output. Regardless of which outer loop is being used, both outer loops take advantage of a faster, inner current loop for peak current mode control with fast transient response. With this unique architecture, switching between constant-voltage and constant-current operation is smooth and monotonic; it can be done dynamically during operation without glitching or undesirable transient effects.

特性 Features

Smooth, dynamic transitions from constant-current to constant-voltage operation using the unique control loop architecture
Dynamically adjustable output current and output voltage over a wide operating range
Wide operating voltage range: 4.5-42V
Analog peak-current mode Pulse-Width Modulation (PWM) control
Integrated 8-Bit PIC® Microcontroller
Significant configurability: adjustable output voltage, output current, MOSFET deadtime, leading edge blanking time, thermal responses, slope compensation, over-current protection, over and under voltage lockout levels
Available fixed frequency or quasi-resonant operation, adjustable 31 kHz to 2 MHz
I2C communication interface
13 GPIO
Integrated synchronous low-side MOSFET drivers
Integrated high voltage linear regulator, with external output
Integrated temperatures sense diode
Integrated 10 bit A/D converter
Minimal external components needed
Custom algorithm support
Topologies supported include Boost, SEPIC, Flyback, and Cuk

简介

MCP19125属于集成电路（IC）的PMIC-稳压器-DCDC开关式控制器。由Microchip制造生产的MCP19125DC-DC 开关控制器PMIC（电源管理集成电路）DC 到 DC 开关式控制器是用于高效率电路的稳压 IC，其配置为生成高于（突升或步升）或低于（突降或步降）输入电源的输出电源电压。其他拓扑结构可能包括：降压-升压、反激、正激、Cuk、SEPIC、全桥、半桥和推挽式。这些器件不同于需要最小电压并“烧尽”多余电压的线性稳压器。