TPS40120_15 Datasheet, PDF (1/14 Pages) Texas Instruments – VRM10.0 COMPLIANT PROGRAMMABLE FEEDBACK DIVIDER

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 sup-
port 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
R_ZCO
FB
Error Amplifier
10
+
DROOP
7
R_DROOP
Drivers
Enable
REF
8
+
SS
700 mV
I_DROOP
15
C_SS
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