首页 > Intersil 英特矽尔 > 电源管理器件 > 开关稳压器

ISL6556A Optimized Multiphase PWM Controller with 6-Bit DAC for VR10.X Application

VIN (min) (V) 3
VIN (max) (V) 12
VOUT (min) (V) 0.8375
VOUT (max) (V) 1.65
IOUT (max) (A) >120

The ISL6556A controls microprocessor core voltage regulation by driving up to 4 synchronous-rectified buck channels in parallel. Multi-phase buck converter architecture uses interleaved timing to multiply channel ripple frequency and reduce input and output ripple currents. Lower ripple results in fewer components, lower component cost, reduced power dissipation, and smaller implementation area.

The ISL6556A utilizes rDS(ON) current sensing in each phase for adaptive voltage positioning (droop), channelcurrent balancing, and overcurrent protection. To ensure droop accuracy, an external NTC compensation circuit can be used to completely nullify the effect of temperature related variation in rDS(ON).

A unity gain, differential amplifier is provided for remote voltage sensing. Any potential difference between remote and local grounds can be eliminated using the remote-sense amplifier. The precision threshold-sensitive enable input is available to accurately coordinate the start up of the ISL6556A with Intersil MOSFET driver IC. Dynamic-VIDTM technology allows seamless on-the-fly VID changes. The offset pin allows accurate voltage offset settings that are independent of VID setting. The ISL6556A uses 5V bias and has a built-in shunt regulator to allow 12V bias using only a small external limiting resistor.

ISL6556A 特点
ISL6556A 芯片订购指南
芯片型号 产品状态 温度范围 封装尺寸图 潮湿敏感度等级MSL 美元价格US $
ISL6556ACBZ 量产 民用级 28 Ld SOIC 3 2.11
ISL6556ACBZ-T 量产 民用级 28 Ld SOIC T+R 3 2.11
ISL6556ACRZ 量产 民用级 32 Ld QFN 3 2.16
ISL6556ACRZ-T 量产 民用级 32 Ld QFN T+R 3 2.16
ISL6556ACB 停产 民用级 28 Ld SOIC 1 N/A
ISL6556ACB-T 停产 民用级 28 Ld SOIC T+R 1 N/A
ISL6556ACR 停产 民用级 32 Ld QFN 1 N/A
ISL6556ACR-T To Be Discontinued 民用级 32 Ld QFN T+R 1 2.16
ISL6556A 应用技术支持与电子电路设计开发资源下载
  1. ISL6556A 数据资料 datatSheet 下载.PDF
  2. Power 电源管理器件产品选型指南 . pdf