IRDC3710-DF Datasheet, PDF (1/13 Pages) International Rectifier – USER GUIDE FOR IRDC3710-DF EVALUATION BOARD

IRDC3710-DF
SupIRBuck^TM
USER GUIDE FOR IRDC3710-DF EVALUATION BOARD
DESCRIPTION
The IR3710M is single phase sync-buck
PWM controller IC optimized for efficiency in
high performance portable electronics. The
switching modulator uses constant ON-time
control. Constant ON-time with diode
emulation provides the highest light load
efficiency required for all applications.
Key features offered by the IR3710M
include: programmable switching frequency,
soft start, forced continuous conduction
mode (FCCM) operation at light load and
over current protection.
Additional features include pre-bias startup,
very precise 0.5V reference, over/under voltage
fault protection, power good output, and enable
input with voltage monitoring capability. The
gate drive is designed to operate up to 7.5V to
enhance over all system efficiency.
This user guide contains the schematic and bill
of materials for the IRDC3710-DF evaluation
board. The guide describes operation and use
of the evaluation board itself. Detailed
specifications and application information for
IR3710M is available in the IR3710M data
sheet.
BOARD FEATURES
• V_in = +12V Typical ( 8-19V input Voltage range. See note below)
• PV_cc= +5.0V
• Vcc=+3.3V
• V_out = +1.1V @ 0- 24A
• F_s = 300kHz @ 24A
• L = 0.5uH
• C_in= 2x10uF (ceramic 1210) + 1x330uF (electrolytic)
• C_out= 2x10uF (ceramic 1206) + 2x330uF(SP Cap)
Note: At low input line an additional 10uF ceramic capacitor is recommended at
input to handle higher ripple current)
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