AIF04ZPFC-02L Astec Power, AIF04ZPFC-02L Datasheet - Page 21

• Manufacturer Part Number: AIF04ZPFC-02L
• Manufacturer: Astec Power

Connections to enable Astec DC-DC converters.
The output from the PFC’s LD ENABLE (pin 13) can directly drive an opto-coupler to provide an isolated signal to enable
the power output of one or more Astec DC-DC converter modules.
General Connections to enable a load
For enabling loads other than Astec DC-DC converters the following circuit can be used. The LD ENABLE pin can directly
drive a MOSFET with a 15V zener clamping the gate voltage.
Conducted EMI
The PFC modules will require additional EMI filtering to enable the system to meet relevant EMI standards.
PFC modules have an effective input to ground (baseplate) capacitance of 1600pF. This should be accounted for when
calculating the maximum EMI ‘Y’ capacitance to meet ground leakage current specifications. An example filter circuit is
shown below.
MODEL : AIF -
March 2006 REVISION 09
AIF04ZPFC
Load Enable Connection for Astec DC-DC Converters
AIF04ZPFC
8
9
8
9
+O/P
16
1
-O/P
PFC Series
+O/P
1
16
-O/P
to -SENSE PIN / S COM pin
of DC - DC converter module
to ENABLE pin of DC-DC
converter module
S
G
D
Technical Reference Note
IRFP450
AIF - PFC Power Factor
RESISTIVE
LOAD
Correction Series
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