概览

描述

The PV88080 power management integrated circuit (PMIC) provides one PWM buck controller and three adjustable synchronous buck regulators. The high voltage buck controller can optionally be used to generate the supply for the other three buck converters. Two pass devices (NMOS FET) for the high side and low side of the high voltage buck controller are external which allows the majority of the buck controller power dissipation to be outside the PV88080. This high voltage buck controller uses a constant on-time (COT) control scheme with an integrated bootstrap PMOS switch.

In certain applications, multiple PV88080s can be used together to provide enough power rails to power the larger systems. There are three buck converters that can be used to generate the supplies for CPUs, DDR memory and other auxiliary functions in a typical application. The pass devices of these buck converters are fully integrated, so no external FETs or Schottky diodes are needed. This results in optimized power efficiency and a reduced external component count.

Benefits

  • 50% reduction in board area
  • High integration of rails in single package
  • Re-programmability = Fast re-design
  • Slew rate control improved PCB cost/performance
  • Dynamic Voltage Scaling (DVS) for enhanced performance/power scaling
  • Significantly fewer devices and discretes

特性

  • One high-voltage synchronous buck controller with:
    • Wide VIN range, 7V to 26V
    • Programmable VOUT (0.8V to 5.25V when VIN <13.2V, 1.8V to 5.25V when VIN >13.2V)
    • Up to 20A IOUT depending on external MOSFET
  • Three synchronous buck converters with integrated low RON FET:
    • Buck1: programmable VOUT from 0.75V to 3.3V with 5A continuous output current, and 6A peak current standalone
    • Buck2: programmable VOUT from 0.9V to 3.6V with 2A continuous output current and 3A peak current  standalone
    • Buck3: programmable VOUT from 0.9V to 3.6V with 2A continuous output current and 3A peak current standalone
  • DVC on buck controller and buck converters
  • Auto mode on all buck converters, adjustable soft-start, and I2C-compatible interface
  • GPIO to connect/control the other device
  • Register-selectable multiple function: mute, reset timer, external thermal sense, and lower input voltage alarm
  • -40 °C to +85 °C ambient temperature 
  • Package: 32-pin QFN

应用

应用

  • Networking home terminals
  • Wi-Fi EAP/routers
  • Supply for digital television processors
  • Power supply for digital set-top boxes (STB)

文档

文档标题 类型 日期
PDF3.22 MB
数据手册
PDF873 KB
应用文档
PDF696 KB
应用文档
PDF267 KB
应用文档
PDF312 KB
应用文档
PDF529 KB
应用文档
PDF586 KB
应用文档
PDF745 KB
应用文档
PDF426 KB
产品简述
PDF85 KB
原理图
PDF91 KB
原理图

设计和开发

软件与工具

软件下载

文档标题 类型 日期
ZIP54.19 MB
软件和工具 - 软件

模块