zm7100 Power-One, zm7100 Datasheet - Page 5

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

7.
The block diagram of a typical application of a ZM7100 digital power manager (DPM) is shown in Figure 1. The
system may include up to 32 Z-series Point Of Load converters (POLs). Each POL converter has a unique 5-bit
address programmed by grounding respective address pins. All POL converters are connected to the DPM and to
each other via a single-wire synchronization/data (SD) communication bus. The bus provides synchronization of
all POL converters to the master clock generated by the DPM and simultaneously performs bidirectional data
transfer between the POL converters and the DPM. The DPM communicates in a bidirectional way via the I
with the host system and/or ZIOS
The DPM can be powered either directly from the intermediate voltage bus or from an independent voltage source.
In this case the DPM can control a DC-DC Front End via the FE_EN pin. The DPM can also trigger an optional
crowbar circuit and provide undervoltage and overvoltage protections of the intermediate bus voltage. In addition,
the DPM can be controlled by a host system via the interrupt inputs and the AC-Fail input.
There are four groups of POL converters in the application. A group is defined as a number of POL converters
interconnected via OK pins. Grouping of POL converters is optional, it enables users to program advanced fault
management schemes and define margining functions, monitoring, startup behavior, and reporting conventions.
REV. 4.0 JUL 28, 2006
Typical Applications
Group A
Vo
1
Figure 1. Block Diagram of Typical Multiple Output Application with Digital Power Manager and I
INT0_N
INT1_N
INT2_N
INT3_N
RES_N
POL
I2C_SDA I2C_SCL
ZM7100
I
2
C
AC Fail_N
FE_EN
Auxiliary Supply
IBV_S
IBV
CB
Group B
TM
Graphical User Interface.
www.power-one.com
POL
AC Fail
(optional)
Crowbar
ZM7100 Series Digital Power Manager
Group C
POL
48V
FE
Group D
POL
2
C Interface
Page 5 of 29
Data Sheet
IBV
Vo_n
2
C bus