Compliant with Intel IMVP8™, the ISL95866 provides a complete power solution for desktop microprocessors supporting the core (IA), graphics (GT), or unsliced graphics (GTUS or GTX). The controller provides control and protection for two Voltage Regulators (VR). The first VR can be configured for 4-, 3-, 2-, or 1-phase operation. The second VR is configurable for 3-, 2-, or 1-phase operation. The VRs feature a programmable SVID address to allow maximum flexibility in supporting desktop processor SKUs. Both controller outputs share a common serial control bus to communicate with the CPU and achieve lower cost and smaller board area compared with a two-chip approach. Based on Intersil’s Robust Ripple Regulator R3™ technology, the R3™ modulator has many advantages compared to traditional modulators. These include faster transient settling time, variable switching frequency in response to load transients and improved light-load efficiency due to diode emulation mode with load-dependent low switching frequency. The ISL95866 has several other key features. The controller features three integrated +12V gate drivers with two on the VR A output. The controller supports either DCR current sensing with a single NTC thermistor for DCR temperature compensation or more precision through resistor current sensing if desired. Both outputs feature remote voltage sense, programmable IMAX, adjustable switching frequency, OC protection, and single VR_READY power-good indicator. The ISL95866 features an SMBus interface, which supports enabling or disabling droop, output voltage offset adjustment, and disabling of OVP and OCP protections.

特性

  • Supports Intel serial data bus interface
  • SMBus/PMBus/I2C interface with SVID conflict free
  • DROOP, OVP, and OCP enable/disable
  • Voltage offset adjustment
  • Green hybrid digital R3™ modulator
  • Excellent transient response
  • Phase shedding with power state selection
  • Diode emulation in single-phase for high light-load efficiency
  • Dual output controller
  • Voltage regulator A: 4-, 3-, 2-, or 1-phase designs with two +12V integrated gate drivers
  • Voltage regulator B: 3-, 2-, or 1-phase designs with one +12V integrated gate driver
  • 0.5% system accuracy over-temperature
  • Supports multiple current-sensing methods
  • Lossless inductor DCR current sensing
  • Precision resistor current sensing
  • Differential remote voltage sensing
  • Resistor programmable address selection, IMAX, and switching frequency for both outputs
  • Adaptive body diode conduction time reduction

产品选择

下单器件型号 Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active QFN Tube 1000
Availability
Active QFN Reel 4000
Availability

文档和下载

文档标题 其他语言 类型 文档格式 文件大小 日期
数据手册与勘误表
ISL95866 Datasheet 数据手册 PDF 2.30 MB
ISL95866 Data Short 简易格式数据手册 PDF 203 KB
应用指南 &白皮书
Five Easy Steps to Create a Multi-Load Power Solution 白皮书 PDF 846 KB
AN1681: Grounding Techniques 应用文档 PDF 509 KB
AN1684: Nonideality of Ground 应用文档 PDF 397 KB