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MAX15003 Evaluation Kit
Component Suppliers
SUPPLIER
Central Semiconductor
Fairchild Semiconductor
International Rectifier
Murata Mfg. Co., Ltd.
Panasonic Corp.
Sumida Corp.
TDK Corp.
Vishay
PHONE
631-435-1110
888-522-5372
310-322-3331
770-436-1300
800-344-2112
847-545-6700
847-803-6100
203-268-6261
WEBSITE
www.centralsemi.com
www.fairchildsemi.com
www.irf.com
www.murata.com
www.panasonic.com
www.sumida.com
www.component.tdk.com
www.vishay.com
Note: Indicate that you are using the MAX15003 when contacting these component suppliers.
__________________________Quick Start
Required Equipment
Before beginning, the following equipment is needed:
? One 14V, 10A adjustable power supply
9) Turn on the power supply.
10) Verify that the VOUT1, VOUT2, and VOUT3 outputs
measure 3.3V, 2.5V, and 1.2V, respectively.
11) Verify that the PGOOD1, PGOOD2, PGOOD3, and
RESET signals measure approximately 3.3V, 2.5V,
?
?
Three voltmeters
One 4-channel oscilloscope
1.2V, and 5V, respectively.
12) The EV kit is ready for load testing. Use the
Procedure
The MAX15003 EV kit is a fully assembled and tested
surface-mount board. Follow the steps below to verify
board operation. Caution: Do not turn on the power
supply until all connections are completed.
1) Verify that a shunt is across pins 1-2 of jumper JU1
(ratiometric tracking mode).
2) Verify that a shunt is across pins 2-3 of jumper JU2
(out-of-phase mode).
3) Connect a voltmeter across the VOUT1 and PGND
two-hole PCB pads.
4) Connect a voltmeter across the VOUT2 and PGND
two-hole PCB pads.
5) Connect a voltmeter across the VOUT3 and PGND
two-hole PCB pads.
6) Connect the 4-channel oscilloscope probes to the
PGOOD1, PGOOD2, PGOOD3, and RESET two-
hole PCB pads. Connect each probe ground lead to
the SGND two-hole PCB pad.
7) Set the adjustable power supply to 12V and disable
the output.
8) Connect the positive terminal of the power supply
to the IN banana jack connector. Connect the neg-
ative terminal of this power supply to the PGND
banana jack connector.
respective VOUT_ banana jacks for high-current
load testing.
Detailed Description of Hardware
The MAX15003 EV kit is a fully assembled and tested
surface-mount PCB that demonstrates the MAX15003
IC, which integrates three high-performance PWM
switching step-down DC-DC controllers. Additionally,
the MAX15003 IC can be enabled in tracking or
sequence modes and can operate in phase or 120°
out-of-phase. The EV kit circuit operates over the
input-voltage range of 6V to 14V. The outputs are con-
figured for 3.3V, 2.5V, and 1.2V, providing up to 3A,
4A, and 10A, respectively. The MAX15003 switching
frequency of 600kHz is programmed with resistor R40.
The frequency can be programmed from 200kHz to
2.2MHz by replacing this resistor, or can be synchro-
nized to an external clock signal through the SYNC
input pad. The MAX15003 EV kit PCB is designed with
4-layer and 2oz copper for optimum performance.
The phase and tracking/sequencing operation modes
are selectable through jumpers JU1 and JU2.
Coincident tracking, ratiometric tracking, or sequencing
options enable tailoring of the power-up/power-down
sequence depending on the application requirements.
PGOOD1, PGOOD2, PGOOD3, and RESET logic signal
output pads are provided for circuit monitoring.
_______________________________________________________________________________________
3
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