TPS40120

TPS40120 www.ti.com SLUS616B – JULY 2004 – REVISED AUGUST 2004 VRM10.0 COMPLIANT PROGRAMMABLE FEEDBACK DIVIDER FEATURES VRM 10.x VID Code Table 14-Pin TSSOP APPLICATIONS Voltage Regulator Modules VRM/EVRD 10.x Multiphase Processor Power Supplies DESCRIPTION The TPS40120 is a 6-bit digitally programmed feedback divider designed to work with TPS40090 multiphase controller or other controllers having 0.7-V internal reference to support VRM 10.x compliant power supplies. The TPS40120 is designed to support discrete DC/DC converters for Intel® processors using 5-bit (Pentium® 4 or Xeon™) or 6-bit VID codes with 12.5 mV steps. TYPICAL APPLICATION 14 VCC TPS40120 1 VID5 VOUT 8 2 VID0 FB 9 3 VID1 4 VID2 5 VID3 BIAS 10 NCPU2 13 6 VID4 NCPU1 12 GND 7 BP5 TPS40090 22 GNDS 13 Differential Amplifier VOUT + 12 DIFFO 11 R3 C1 COMP 9 RZCO FB Error Amplifier 10 + DROOP 7 RDROOP Drivers Enable REF 8 + SS 700 mV IDROOP 15 CSS Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2004, Texas Instruments Incorporated TPS40120 SLUS616...