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PDF IRDC3637EVAL Data sheet ( Hoja de datos )
| Número de pieza | IRDC3637EVAL | |
| Descripción | IR3637 EVALUATION BOARD USER GUIDE | |
| Fabricantes | International Rectifier | |
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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
1 page  
IRDC3637EVAL
BILL OF MATERIAL
Ref Desig
Q1
U1
Description
Dual MOSFET
Controller
Value
20V, 13.4mOhm
Synchronous PWM
Qty
1
1
Part#
IRF8910
IR3637
D3
Diode
Fast Switching
1
BAT54A
L1
Inductor
1.5uH, 8A, 10 mOhm 1
DO3316P-152
C8,9,12,13 Cap, Poscap 150uF, 6.3V, 40mOhm 4
6TPC150M
C2,C5
C1,10,11
Cap, Ceramic
Cap, Ceramic
0.1uF, X7R, 16V
1uF, X5R, 6.3V
2 ECJ-1VB1C104K
3 ECJ-1VB0J105K
C3
Cap, Ceramic
22pF, NPO, 100V
1 ECJ-1VC2A220J
C4 Cap, Ceramic 1800pF, X7R, 50V 1 ECJ-1VB1H182K
R3 Resistor
16K, 1%
1
Any
R8 Resistor
1.24K, 1%
1
Any
R9 Resistor
1K, 1% 1 Any
R2,4,6,7
Resistor
0 Ohm 4 Any
R1,5,10
Resistor
Not Used
3
C6,7
Capacitor
Not Used
2
D1 Diode
Not Used
1
J1,J2
Socket
Scope probe
2 131-5031-00
JP1,JP2
Terminal
Wire Connect
2 ED1973-ND
JU1 Terminal
2-Pin Header
1 S1012-02-ND
Manuf
IR
IR
IR
Coilcraft
Sanyo
Panasonic
Panasonic
Panasonic
Panasonic
Tektronix
Digi-Key
Digi-Key
Rev1.0
4/29/2005
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet IRDC3637EVAL.PDF ] | |
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