zm7100 Power-One, zm7100 Datasheet - Page 27

• Manufacturer Part Number: zm7100
• Description: Zm7100 Series Digital Power Manager
• Manufacturer: Power-One

In applications where the DPM is powered from a 3.3V auxiliary supply, the schematic in Figure 25 needs to be
modified by adding a jumper between Pin 23 and Pin 25 as shown in Figure 26. This effectively shorts the internal
linear regulator and applies the voltage directly to the DPM ASICs. It is user’s responsibility to ensure the voltage
on Pin 25 never exceeds specified limits.
In applications where the intermediate voltage bus is 3.3V, both the DPM and POL converters can be powered
directly from the IBV as shown in Figure 27.
REV. 4.0 JUL 28, 2006
IBV=3.0...3.6V
IBV=3.0...14V
Figure 26. Power Connections For Application With 3.3V Auxiliary Source
Input Voltage
3.3V DPM
Auxiliary
Supply
POLs
Figure 27. Power Connections for IBV=3.3V
www.power-one.com
Input Voltage
100
POLs
4.7uF
4.7uF
ZM7100 Series Digital Power Manager
22uF
100
22uF
Pin 10
IBV_S
Pin 25
Pin 23
Pin 24
GND
3V3
IBV
Pin 10
IBV_S
Pin 25
Pin 23
Pin 24
GND
3V3
IBV
DPM
DPM
LDO
LDO
Page 27 of 29
Data Sheet