2. POWER SUPPLIES CONNECTION
2.1. PARALLEL OPERATION
-V
SIGNAL RETURN
B1
B9
-SENSE
B4
A1~5
B6
CURRENT SHARE
+V
A6~10
HFE1600
-V
A1~5
+SENSE
B9
-SENSE
B4
ENABLE
B7
B1
CURRENT SHARE
B6
HFE1600
+V
A6~10
-SENSE
B4
+SENSE
B9
ENABLE
B7
-V
A1~5
B6
ENABLE
B1
+SENSE
B7
HFE1600
LOAD
+V
A6~10
+V
+S
-S
SIGNAL RETURN
-V
SIGNAL RETURN
CURRENT SHARE
•
Up to 10 x HFE1600 units with the same rating (voltage
and current) can be used in parallel to increase the output
current.
•
By connecting the CS signal between the paralleled units,
automatic current balance is achieved with accuracy of
Accuracy ±10%:
20% ≤ Iout < 50% of max Iout.
Up to 10 units
Accuracy ±5%:
Iout ≥ 50% of max Iout.
Up to 10 units
•
Derate the total output current by 5% when using parallel
operation to prevent unit overload condition.
•
The built-in ORing MOSFETs on the main output and the
12V Auxiliary output allow N+1 operation.
•
If Voltage programming is used, “Voltage Programming” Pin
of all units must be connected in parallel.
•
Referenced to “SIGNAL RETURN” (floating from the output)
controls/signals and +12V AUX can be connected in parallel.
•
ENABLE of all supplies can be connected to a single switch.
Fig-2.1
11
