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ZY2140 40A No-Bus POL Data Sheet
8V to 14V Input ? 0.5V to 3.65V Output
6.
Typical Application
IBV
ENABLE
CS
TRIM
SYNC
OK
PGOOD
CS
TRIM
SYNC
OK
PGOOD
MARGIN
EN
VIN
MARGIN
EN
VIN
CCA
POL2
GND
22uF 22uF 4.7uF
CCA
POL4
GND
22uF 22uF 4.7uF
+VS
+VS
VOUT
VOUT
VOUT
VOUT
Vo2
GND
220uF 47uF 22uF 22uF 22uF
GND
220uF 47uF 22uF 22uF 22uF
IM
GND
-VS
IM
GND
-VS
CS
SYNC
OK
Vo1
CS
SYNC
OK
TRIM
PGOOD
TRIM
PGOOD
MARGIN
EN
VIN
MARGIN
EN
VIN
CCA
POL1
GND
22uF 22uF 4.7uF
CCA
POL3
GND
22uF 22uF 4.7uF
+VS
+VS
VOUT
VOUT
VOUT
VOUT
Vo3
GND
220uF 47uF 22uF 22uF 22uF
GND
220uF 47uF 22uF 22uF 22uF
IM
GND
-VS
IM
GND
-VS
Figure 11. Complete Schematic of Application with Three Independent Outputs. Intermediate Bus Voltage is from 8V to 14V.
In this application four POL converters are configured to deliver three independent output voltages. POL1 and
POL2 are connected in parallel for increased output current. Output voltages are programmed with the resistors
connected between TRIM and MARGIN pins of individual converters.
POL1 is configured as a master (IM pin is grounded) and all other POL converters are synchronized to the
switching frequency of POL1.
All converters are controlled by the common ENABLE signal. Turn-on and turn-off processes of the system are
illustrated by pictures in Figure 6 and Figure 7.
ZD-02014 Rev. BB2, 30-Jun-10
www.power-one.com
Page 10 of 14
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