IRDCIP1837 International Rectifier, IRDCIP1837 Datasheet

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IRDCIP1837

Manufacturer Part Number
IRDCIP1837
Description
Reference Design kit for the iP1837 a 600kHz, 35A SupIRBuck Synchronous Buck Converter
Manufacturer
International Rectifier
Datasheet

Specifications of IRDCIP1837

Package
Design Kit
Featured Part
iP1837
Input Voltage (v)
12V
Output Voltage (v)
1.05V
Switching Frequency (khz)
600kHz
DESCRIPTION
The
converter,
performance and flexible solution in a small
7.7mm X 7.7 mm LGA package.
Key features offered by the iP1837 include
programmable soft-start ramp, precision
0.6V
thermal protection, overvoltage protection,
programmable switching frequency, Enable
input, input under-voltage lockout for proper
start-up, and pre-bias start-up.
BOARD FEATURES
1/11/2011
SupIRBuck
V
Vcc=+3.3V (3.46V Max)
V
F
L= 0.215uH
C
C
s
in
out
in
out
USER GUIDE FOR iP1837 EVALUATION BOARD
=600kHz
iP1837
= 7x22uF (ceramic 1206) + 1X330uF (electrolytic)
= +12V (+ 13.2V Max)
reference
=15x22uF (ceramic 0805)
= +1.8V @ 0- 35A
providing
is
voltage,
a
synchronous
a
TM
compact,
Power
Good
buck
high
,
An output over-current protection function is
implemented by sensing the voltage developed
across the on-resistance of the synchronous
rectifier
performance.
This user guide contains the schematic and bill
of materials for the iP1837 evaluation board.
The guide describes operation and use of the
evaluation board itself. Detailed
information for iP1837 is available in the iP1837
data sheet.
MOSFET
for
IRDCiP1837
optimum
application
cost
and
1
1

Related parts for IRDCIP1837

IRDCIP1837 Summary of contents

Page 1

... This user guide contains the schematic and bill of materials for the iP1837 evaluation board. , Good The guide describes operation and use of the evaluation board itself. Detailed information for iP1837 is available in the iP1837 data sheet. IRDCiP1837 for optimum cost and application 1 1 ...

Page 2

... Separate power ground and analog ground are used and may be connected together using a 0 ohm resistor at one of two possible locations 1/11/2011 Table I. Connections Signal Name V (+12V) in Ground Vcc input Ground for Vcc input Ground of V out V (+1.8V) out Enable Power Good Signal IRDCiP1837 R18 should be removed for 2 2 ...

Page 3

... BiasGnd 12 PVCC VOSM 7 VCC 10 EN PGD IRDCiP1837 3 3 ...

Page 4

... X5R, 6.3V TDK 0603,1/10 W,1% Rohm 0603,1/10 W,1% Rohm 0603,1/10 W,1% Rohm 0603,1/10 W,1% Rohm 49.9K,0603,1/10 W,1% Rohm 7.5K,0603,1/10W,1% Rohm 0603,1/10 W,1% Rohm iP1837 7.7mmX7.7mm International Rectifier IRDCiP1837 Part Number C3216X5R1C226M EEV-FK1E331P ECJ-1VB1E104K ECJ-1VB1H222K GRM1885C1H121JA01D ECJ-2FB0J226M C2012X5R1A475K ECJ-1VB1H822K PCDC1008-R215EMO MCR03EZPFX4221 MCR03EZPFX7501 CRCW060357R6FKEA CRCW060320R0FKEA MCR03EZPFX3652 CRCW06030000Z0EA C1608X5R0J106M ...

Page 5

... Fig. 4: Start up with 1V Pre Bias , 0A Load Fig. 6: Inductor node at 35A load Ch :LX 2 1/11/2011 IRDCiP1837 Fig. 3: Start up at 35A Load PGood Fig. 5: Output Voltage Ripple, 35A load out Fig ...

Page 6

... TYPICAL OPERATING WAVEFORMS Vin=12.0V, Vcc=3.3V, Vo=1.8V, Io=3.5A-14A, Room Temperature, no air flow Fig. 8: Transient Response, 3.5A to 14A step (2.5A/us) 1/11/2011 out IRDCiP1837 6 6 ...

Page 7

... TYPICAL OPERATING WAVEFORMS Vin=12.0V, Vcc=3.3V, Vo=1.8V, Io=24.5A-35A, Room Temperature, no air flow Fig. 9: Transient Response, 24.5A to 35A step (2.5A/us) 1/11/2011 IRDCiP1837 out 7 7 ...

Page 8

... TYPICAL OPERATING WAVEFORMS Vin=12.0V, Vcc=3.3V, Vo=1.8V, Io=0A-35A, Room Temperature Fig. 10: Bode Plot at 35A load shows a bandwidth of 102.04kHz and phase margin of 56.20 1/11/2011 IRDCiP1837 degrees 8 8 ...

Page 9

... TYPICAL OPERATING WAVEFORMS Vin=12.0V, Vcc=3.3V, Vo=1.8V, Io=0A-35A, Room Temperature, no air flow 3 3.5 7 10.5 Fig.12: Power loss versus load current 1/11/2011 14 17.5 21 24.5 Iout (A) Fig.11: Efficiency versus load current 14 17.5 21 24.5 Iout (A) IRDCiP1837 ...

Page 10

... THERMAL IMAGES Vin=12.0V, Vcc=3.3V, Vo=1.8V, Io=0A-35A, Room Temperature, 200 LFM Fig. 13: Thermal Image of the board at 35A load 1/11/2011 Test point 1 is iP1837 Test point 2 is inductor IRDCiP1837 10 10 ...

Page 11

... PRIMARY DATUM C (SEATING PLANE) IS DEFINED BY THE LAND PAD OPENINGS. 6 BILATERAL TOLERANCE ZONE IS APPLIED TO EACH SIDE OF THE PACKAGE BODY. 7. NOT TO SCALE. 7.650 [0.301 0.15 [.006 14X 0.508 X 0.508 BOTTOM VIEW SIDE VIEW Fig. 14. Mechanical Outline Drawing IRDCiP1837 0.12 [.005] C 1.66 [.065 ...

Page 12

... Fig. 15. PCB Metal and Components Placement 1/11/2011 IRDCiP1837 12 12 ...

Page 13

... Fig. 16. Stencil Design IRDCiP1837 13 13 ...

Page 14

... Fig. 17. Solder Resist IRDCiP1837 14 14 ...

Page 15

... Fig. 18. Tape and Reel Information IRDCiP1837 ...

Page 16

... IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 This product has been designed and qualified for the Consumer market Data and specifications subject to change without notice. 11/17 IRDCiP1837 TAC Fax: (310) 252-7903 Visit us at www.irf.com for sales contact information ...

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