ZY2120 Power-One, ZY2120 Datasheet - Page 11

• Manufacturer Part Number: ZY2120
• Description: Zy2120 20a No-bus Pol
• Manufacturer: Power-One

6.
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 4 and Figure 5.
ZD-02139 Rev. 1.0 04NOV08
ENABLE
Figure 11. Complete Schematic of Application with Three Independent Outputs. Intermediate Bus Voltage is from 8V to 14V.
Typical Application
IBV
CS
TRIM
MARGIN
EN
CCA
IM
CS
TRIM
MARGIN
EN
CCA
IM
POL2
POL1
SYNC
SYNC
PGOOD
PGOOD
VOUT
VOUT
GND
GND
GND
GND
+VS
+VS
VIN
-VS
VIN
-VS
OK
OK
www.power-one.com
22uF
22uF
220uF
220uF 47uF 22uF 22uF
22uF 10uF
22uF 10uF
47uF
22uF
Vo1
22uF
22uF
22uF
8V to 14V Input
ZY2120 20A No-Bus POL Data Sheet
Preliminary Data Sheet
CS
TRIM
MARGIN
EN
CCA
IM
CS
TRIM
MARGIN
EN
CCA
IM
•
POL4
POL3
SYNC
SYNC
0.5V to 5.5V Output
PGOOD
PGOOD
VOUT
VOUT
GND
GND
GND
GND
+VS
+VS
VIN
-VS
VIN
-VS
OK
OK
Page 11 of 15
22uF
22uF
220uF 47uF 22uF 22uF
220uF 47uF 22uF 22uF
22uF 10uF
22uF 10uF
Vo2
Vo3
22uF
22uF