Quick Start Guide for DC371
By Wei Chen
DC371 is an IMVP2 compatible power supply for powering the Intel mobile Tualatin
processor. The input voltage is 7–21V, the output voltage is programmed by the 5-bit
VID which is compatible with the IMVP2 spec. The circuit is designed to deliver 23A
continuous current. The demo board has an on-board dynamic load tester to facilitate the
dynamic load test.
Quick Start Guide
Refer to Figure 2 for proper measurement equipment setup and follow the procedure
below:
1.
Connect a 21V bench supply to V
IN
and GND pins, a 5V supply to 5V pin and GND
pin, and a 3.3V supply to 3.3V pin and GND. All supplies must be off.
2.
Connect an electronic load to V
CORE
and GND pins using a wire gauge suitable for
23A. Preset load current to 0A.
3.
Initial jumper setup for
performance mode operation
:
JP7
Short to 5V side
JP11
Short
VID4
VID3
VID2 VID1 VID0
Short Short Open Open Open
DPSLP# VRON DPSLPVR
GMUXSEL
Short Open Open Short
4.
Apply 21V, then 5V and 3.3V
5.
Short Jumper VRON. Measure V
CORE
= 1.380 ~ 1.420 V
6.
Apply load current of 23A, measure voltage across C15 to be: 1.288 ~ 1.328V
V
IN
= 21V ± 0.5V, I
IN
< 2A
7.
Change load to 0A
8.
Open Jumper DPSLP#, measure V
CORE
= 1.318~1.358V
9.
Decrease V
IN
from 21V to 14V, change jumpers for
battery mode operation
:
VID4 VID3 VID2 VID1 VID0
Short
Open
Open
Short Short
DPSLP# VRON DPSLPVR
GMUXSEL
Short
Short
Open
Open
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