IRDC3629A Datasheet, PDF (1/16 Pages) International Rectifier – USER GUIDE FOR IR3629A EVALUATION BOARD

IRDC3629A
USER GUIDE FOR IR3629A EVALUATION BOARD
(V_in=12V, V_o=1.8V, I_o=25A)
DESCRIPTION
The IR3629A is a synchronous buck controller,
providing a compact, high performance and
flexible solution in a small 3mmx4mm MLPD
package.
Key features offered by the IR3629A include
programmable soft-start ramp, precision 0.6V
reference voltage, thermal protection, fixed
300kHz 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 IR3629A evaluation board. The
guide describes operation and use of the
evaluation board itself. Detailed application
information for the IR3629A integrated circuit is
available in the IR3629A data sheet.
BOARD FEATURES
• V_in = +12V (13.2V Max)
• V_out = +1.8V @ 0-25A
• IRF6712 as Controller MOSFET
• IRF6715 as Synchronous MOSFET
• L = 0.6uH
• C_in=2x270uF (OS-CON cap) + 2x10uF (ceramic 1206)
• C_out=2x330uF(SP cap)
• Optional external supply connection for Vc
• Optional Power-good output connection
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