International Rectifier SupIRBuck IR38064 User Manual

SupIRBuck
USER GUIDE FOR IR38064 EVALUATION BOARD
DESCRIPTION
The IR38064 is a synchronous buck
converter with a PMBus interface, providing
a compact, high performance and flexible
solution in a small 5mmx7mm PQFN
package.
Key features offered by the IR38064 include
I2C/PMBus configurability of output voltage,
soft-start, input UVLO, input overvoltage
protection, output overvoltage protection,
output overcurrent protection, Power Good,
thermal protection and switching frequency.
Additionally, the IR38064 also features
enhanced line/ load regulation with feed
forward, external frequency synchronization
with smooth clocking, internal LDO, true
differential remote sensing
start-up.
BOARD FEATURES
•
PVin = +12V (+ 13.2V Max), No Vcc required.
• V
= +1.2V @ 0-35A
out
•
F =600kHz
s
•
L= 0.150uH
• C
= 4x22uF (ceramic 1206) + 1x330uF (electrolytic, optional)
in
•
C =10x47uF (ceramic 0805)
out
3/21/2017
TM
and pre-bias
IRDC38064-P1V2
A temperature and bias compensated output
over-current protection function is implemented
by sensing the voltage developed across the
on-resistance of the synchronous rectifier
MOSFET for optimum cost and performance.
This user guide contains the schematic and bill
of materials for the IR38064 evaluation board.
The guide describes operation and use of the
evaluation board itself. Detailed
information for IR38064 is available in the
IR38064 data sheet.
application
1