IRDC3629 Datasheet, PDF (1/16 Pages) International Rectifier – USER GUIDE FOR IR3629 EVALUATION BOARD

IRDC3629
USER GUIDE FOR IR3629 EVALUATION BOARD
(V_in=12V, V_o=1.8V, I_o=20A)
DESCRIPTION
The IR3629 is a synchronous buck controller,
providing a compact, high performance and
flexible solution in a small 3mmx4mm MLPD
package.
Key features offered by the IR3629 include
programmable soft-start ramp, precision 0.6V
reference voltage, thermal protection, fixed
600kHz switching frequency requiring no
external component, input under-voltage
lockout for proper start-up, and pre-bias start-
up.
An 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 IR3629 evaluation board. The
guide describes operation and use of the
evaluation board itself. Detailed application
information for the IR3629 integrated circuit is
available in the IR3629 data sheet.
BOARD FEATURES
• V_in = +12V (13.2V Max)
• V_out = +1.8V @ 0-20A
• IRF6712 as Controller MOSFET
• IRF6715 as Synchronous MOSFET
• L = 0.36uH
• C_in=33uF (SP cap) + 2x10uF (ceramic 1206)
• C_out=6x22uF(ceramic 1206)
• Optional external supply connection for Vc
• Optional Power-good output connection
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