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TRC ELECTRONICS, INC.
Providing exceptional customer service since 1982
TRC ELECTRONICS, INC.
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.com
Designers Manual
Advanced Energy CoolX600 Series
Remote Voltage Adjustment Using External Resistance
To set the output voltage of a module with a resistor, place a resistor, R
trim
, across the
output signal connector pins: pin 6 (I
trim
) and pin 1 or pin 3 (common).
☞
Important
Remote voltage adjustment is not available on CmG and CmH modules.
Comms
Board
uController
Module
Pin 6
Rtrim
Pin 1 or
Pin 3
FFiigguurree 66‑‑2222..
CoolMod wiring diagram for remote voltage setting using external
resistance
You can calculate the R
trim
resistance required for your desired output voltage by
using
Table 6
‑
9
and the following formula:
R
trim
=
47000 V
out
− F
F+5K − V
out
V
max
V
min
47 kΩ
R
trim
(kΩ)
V
out
(V)
FFiigguurree 66‑‑2233..
R
trim
versus V
out
Voltage Control via PMBus
Refer to
“PMBus Communications”
and the CoolX PMBus manual for further
details.
CONSIDERATIONS WHEN ADJUSTING OUTPUT VOLTAGE USING
V
TRIM
AND PMBUS
V
trim
and PMBus control can only adjust the output voltage downward from the
onboard potentiometer set voltage. For example, if a CmC module is set by the
Advanced Energy
®
CoolX
®
600 Modular Power Supply
57010208-00B
Installation, Setup, and Operation
6‑18