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Designers Manual
Advanced Energy CoolX600 Series
potentiometer to 24 V, V
trim
and PMBus will only be able to dynamically set and
adjust the output voltage over the range of 15 V to 24 V. However, if the onboard
potentiometer is set to V
max
of 28 V, the V
trim
or PMBus control can dynamically set
and adjust the output voltage over the full range of 15 V to 28 V.
This prevents accidental OVP or potentially damaging output voltage in the end
application because of an incorrect V
trim
voltage.
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UR
RR
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NTT LLIIM
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USSTTM
MEEN
NTT
The CoolX unit has two methods of overcurrent protection: straight line current limit
and foldback current limit. The default current limit characteristic is straight line
current limit. Simple external application circuits can be used to achieve
programmable foldback current and user programmable reduced current limit levels.
Refer to
Table 3
‑
2
on page 3
‑
2 for nominal current limit values.
☞
Important
Current limit adjustment is not available on dual modules.
V
max
V
set
I
max
I
limit
I
out
(A)
V
out
(V)
Foldback
current
limit
Straight line
current limit
Hiccup
Hiccup
FFiigguurree 66‑‑2244..
Current limit characteristics
Straight Line Current Limit
The straight line current limit of standard and wide-trim modules can be set remotely
in two ways: with a control voltage (I
trim
) or with a resister (R
trim
) across the output
signal connector pins.
REMOTE CURRENT ADJUSTMENT USING EXTERNAL VOLTAGE
The control voltage (I
trim
) should be applied across the output signal connector pins:
pin 5 (I
trim
) and pin 1 (common).
Advanced Energy
®
CoolX
®
600 Modular Power Supply
57010208-00B
Installation, Setup, and Operation
6‑19
