MAX5943AEVKIT Maxim Integrated, MAX5943AEVKIT Datasheet

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MAX5943AEVKIT

Manufacturer Part Number
MAX5943AEVKIT
Description
Power Management IC Development Tools Evaluation Kit for the MAX5943A/B/C/D/E
Manufacturer
Maxim Integrated
Series
MAX5943r
Datasheet
The MAX5943A evaluation kit (EV kit) circuit demon-
strates the hot-swap, current-limiting, and power-ORing
functions of the MAX5943A. The MAX5943A EV kit is
intended for 7.5V to 37V IEEE 1394/FireWire
tions. The MAX5943A controls two n-channel MOSFETs
to regulate load current from an input power supply and
perform low-voltage-drop power-supply ORing. The
MAX5943A EV kit can also be used to evaluate the
MAX5943B/C/D/E versions (refer to the MAX5943 IC
data sheet).
The MAX5943A EV kit features several jumpers to eval-
uate different configurations of the MAX5943A. The out-
put current limit, current-limit timeout period, ORing
threshold, and fault-management features are program-
mable. The undervoltage lockout threshold is config-
urable by installing external components. Shutdown
mode can be controlled with an on-board switch or with
an external logic signal. A FAULT output signal is pro-
vided for fault condition monitoring.
19-3419; Rev 0; 9/04
FireWire is a registered trademark of Apple Computer, Inc.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
DESIGNATION QTY
IN, GND, OUT,
JU1, JU2, JU3
C1, C3
C4, C5
GND
C2
C6
D1
________________________________________________________________ Maxim Integrated Products
2
1
0
1
0
4
3
1µF ±10%, 50V X7R ceramic
capacitors (1206)
TDK C3216X7R1H105K
470µF ±20%, 63V electrolytic
capacitor (16mm x 16.5mm)
Sanyo 63CVFS470FS
Not installed, ceramic capacitors
(0805)
0.1µF ±10%, 50V X7R ceramic
capacitor (0805)
TDK C2012X7R1H104K or
Taiyo Yuden UMK212BJ104KG
Not installed, Schottky diode (SMA)
Noninsulated banana jack
connectors
2-pin headers
General Description
DESCRIPTION
®
applica-
MAX5943A Evaluation Kit
♦ Safely Hot Swaps 7.5V to 37V Power Supplies
♦ Low-Voltage-Drop Power ORing
♦ Evaluates MAX5943A/B/C/D/E Controllers
♦ Demonstrates Active-Current-Limit Feature
♦ Programmable Output-Load Current Limit
♦ Programmable Current-Limit Timer
♦ Fast Current-Limit Response Time
♦ Latch or Autoretry Fault Management
♦ Programmable Undervoltage Lockout
♦ Overcurrent FAULT Status Indicator
♦ Surface-Mount Construction
♦ Fully Assembled and Tested
DESIGNATION QTY
MAX5943AEVKIT
R4, R10–R13
R3, R7, R8
JU4, JU5
TP1, TP2
R5, R6
None
None
SW1
TP3
PART
N1
U1
R1
R2
R9
2
1
1
1
3
0
2
1
1
2
1
1
5
1
Ordering Information
TEMP RANGE
3-pin headers
40V, 7.2A, dual n-channel MOSFET
(8-SO PowerPAK)
Vishay Si7958DP
30mΩ ±1%, 1/2W sense resistor
(1206)
IRC LRC-LR1206-01-R030-F
51kΩ ±5% resistor (0805)
100kΩ ±1% resistors (0805)
Not installed, resistors (0805)
8.06kΩ ±1% resistors (0805)
10kΩ ±5% resistor (1206)
Momentary contact switch
Test points, red
Test loop, red
MAX5943AEEE (16-pin QSOP)
Shunts
MAX5943A PC board
0°C to +70°C
Component List
DESCRIPTION
Features
IC PACKAGE
16 QSOP
1

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MAX5943AEVKIT Summary of contents

Page 1

... Programmable Current-Limit Timer ♦ Fast Current-Limit Response Time ♦ Latch or Autoretry Fault Management ♦ Programmable Undervoltage Lockout ♦ Overcurrent FAULT Status Indicator ♦ Surface-Mount Construction ♦ Fully Assembled and Tested PART MAX5943AEVKIT DESIGNATION QTY JU4, JU5 R3, R7, R8 R4, R10–R13 ...

Page 2

MAX5943A Evaluation Kit SUPPLIER IRC Sanyo Taiyo Yuden TDK Vishay Note: Indicate that you are using the MAX5943A when contacting these component suppliers. The MAX5943A EV kit is a fully assembled and tested surface-mount board. Follow the steps below for ...

Page 3

Undervoltage Lockout Thresholds/Disable The MAX5943A requires that the IN and ON undervolt- age lockout thresholds are exceeded for normal opera- tion. If the voltage at the IN input drops below either one of these thresholds, the MAX5943A controller turns off ...

Page 4

MAX5943A Evaluation Kit Table 2. Current-Limit Timer Configuration JUMPER JU1 TIM PIN SHUNT CONNECTION POSITION Connected to GND through a 4.03kΩ Installed equivalent resistor Connected to GND Not installed through a 8.06kΩ resistor 175ms by removing resistor R6, the shunt ...

Page 5

Table 5. LATCH Configuration JUMPER JU2 LATCH PIN SHUNT POSITION CONNECTION Connected to GND Not installed through resistor R8 Installed Connected to IN Evaluating the MAX5943B/C/D/E The MAX5943A EV kit can also be used to evaluate ver- sions B, C, ...

Page 6

MAX5943A Evaluation Kit 470μF 63V R3 IN 100kΩ 1% GND SW1 OPEN 1 GND IN R2 51kΩ FAULT IN R10 OPEN JU1 R5 R6 8.06kΩ 8.06kΩ JU2 ...

Page 7

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 7 © 2004 Maxim Integrated Products MAX5943A Evaluation Kit Figure 3. MAX5943A EV Kit PC Board Layout— ...

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