XRP7740 Datasheet, PDF (25/31 Pages) Exar Corporation – Quad-Output Digital PWM Buck Controller Supporting high current loads

REV 1.1.0
XRP7740
Quad-Output Digital PWM Buck Controller
Master/Slave configure of the XRP7740
External Clock Synchronization Master Slave combination
When an external clock is used, the user will need to setup the master to also have an external clock in function.
All of the same rules apply as in the External clock synchronization, Synchronized operation as a Slave unit
section of this document. There are two ways of synchronizing this, either the external clock going to both
Master/Slave CLK_IN, or CLK_IN can go to the Master, and the Master can synchronize SYNC_OUT and
CLK_OUT to the Slave.
CLK_IN
GPIO1
GPIO2 ^SYNC_OUT
XRP7740
Configured as a
master with
external clock sync
CLK_IN
GPIO1
SYNC_IN
GPIO2
XRP7740
configured
as slave
External clock synchronization Master Slave combination
Alternative External clock synchronization Master Slave combination
EXAR RESERVES THE RIGHT TO MAKE CHANGES TO THIS DATASHEET.
EXAR CONFIDENTIAL, PRELIMINARY & PROPRIETARY. DO NOT DISTRIBUTE OR COPY.
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