Master And Slave Configuration - Infineon Technologies XMC4000 User Manual

XMC Digital Power Explorer Power Board User Manual
UG_201511_PL30_001
Hardware Description
XMC Digital Power Explorer V1
VDD
XMC Dig. P. Control Card Connector
Block Diagram of Power Supply Concept
Figure 5
2.3

Master and slave configuration

XMC Digital Power Explorer can be chained to a second XMC Digital Power Explorer board to complete a
master slave connection that can be controlled with a single XMC control card. To do that, connect
"MASTER_OUT" signals from the board where the XMC control card is plugged, into the "SLVE_IN" connector
of the slave board. This is shown in Figure 6.
BUCK0
Controls master
buck BUCK0
XMC Control Card
Not used
xx
BlockDiagram_Buck_Master_slave.emf
Diagram for a master slave connection. Control 2 Buck converters with a single XMC
Figure 6
In a master-slave configuration, both bucks can be controlled in voltage mode, peak current mode or a
mixture of both. This is dependent only in the SW configuration of XMC in the control card side.
If communication is required –i.e. PMBus
purpose, as there are no signals transferred from the slave board to the master for communication and the
salved communication connector is not powered on.
Board User Manual
switch (SW4)
VDD = 12V
Vout = 3.3V
VCC_I2C = 3.3V
VDD3.3
Slave in
connector
Master out
cable
connector
Controls slave
buck BUCK1
- the connector in the master board must be used for that
TM
Power on
12V input
jack
Vout
connector
PMBus
connector
BUCK1
Slave in
connector
Master out
connector
Signals in connectors/cable
 PWM_TOP
 PWM_BOT
 Vin
 Vout
 Current Signal
 PWM_Blanking
8
Power_Block_Buck.emf
XMC Control Card
V1.0, 2015-10
Customer Documentation