IRDC3637EVAL GUIDE Datasheet

IRDC3637EVAL Datasheet, PDF, Equivalent


Part Number

IRDC3637EVAL

Description

IR3637 EVALUATION BOARD USER GUIDE

Manufacture

International Rectifier

Total Page 8 Pages
Datasheet
Download IRDC3637EVAL Datasheet


IRDC3637EVAL
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IRDC3637EVAL
IR3637 EVALUATION BOARD USER GUIDE
DESCRIPTION
The IR3637 controller IC is designed to
provide a low cost synchronous Buck
regulator for on-board DC to DC
applications in a small 8-pin SOIC. The
output voltage can be precisely regulated
using the internal 0.8V reference voltage
for low voltage applications.
The IR3637 operates at a fixed internal
400KHz switching frequency to reduce the
component size.
The device features under-voltage lockout
for both input supplies, an external
programmable soft-start function as well as
output under-voltage detection that latches
off the device when an output short is
detected.
The reference board is designed for
1.8V output using +5V and +12V
supplies. This will demonstrate the
main features of IC.
This user guide contains the schematic
and bill of materials, the design
guidelines are described in data sheet.
SPECIFICATION DATA
Vc = 12V
Vcc=Vin=5V
Vout=1.8V
Iout =7A
Output Ripple = 50mV
Fs = 400KHz
INPUT / OUTPUT CONNECTIONS
The connection points are shown in
The following is the input / output connections: Figure1. Connect the power supply
Inputs:
cables according to this figure,
JP1: Input (+5V) and GND
minimizing wire lengths to reduce
JU1: Vc
Outputs:
losses in the wire. Test points J1 and
J2 provide easy connection for
JP2: Vout (+1.8V) and GND
Other Connections:
oscilloscope voltage probe to monitor
the inductor points and output voltage.
J1: Scope connection for Vout
J2: Scope connection for Inductor Point
Rev1.0
4/29/2005
PACKAGE INFORMATION
Fb 1
Vcc 2
LDrv 3
Gnd 4
8 SS/SD
7 Comp
6 Vc
5 HDrv
1

IRDC3637EVAL
CONNECTION DIAGRAM
IRDC3637EVAL
+12V
Supply
+5V
Supply
7A
Load
Figure 1 – Connection diagram of evaluation board for IR3637
Rev1.0
4/29/2005
2


Features www.DataSheet4U.com IRDC3637EVAL IR3637 EVALUATION BOARD USER GUIDE DESCRIPTIO N The IR3637 controller IC is designed to provide a low cost synchronous Buck regulator for on-board DC to DC applica tions in a small 8-pin SOIC. The output voltage can be precisely regulated usi ng the internal 0.8V reference voltage for low voltage applications. The IR363 7 operates at a fixed internal 400KHz s witching frequency to reduce the compon ent size. The device features under-vol tage lockout for both input supplies, a n external programmable soft-start func tion as well as output under-voltage de tection that latches off the device whe n an output short is detected. INPUT / OUTPUT CONNECTIONS The reference board is designed for 1.8V output using +5V a nd +12V supplies. This will demonstrate the main features of IC. This user gui de contains the schematic and bill of m aterials, the design guidelines are des cribed in data sheet. SPECIFICATION DAT A Vc = 12V Vcc=Vin=5V Vout=1.8V Iout =7A Output Ripple = 50mV F.
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