MAX5921AEVKIT Maxim Integrated, MAX5921AEVKIT Datasheet - Page 2

• Manufacturer Part Number: MAX5921AEVKIT
• Description: Hot Swap & Power Distribution Evaluation Kit for the MAX5920 MAX5921 MAX5939
• Manufacturer: Maxim Integrated

Specifications of MAX5921AEVKIT

• Product: Controllers & Switches
• Supply Voltage - Max: 80 V
• Supply Voltage - Min: 20 V
• Operating Temperature Range: - 40 C to + 85 C
• Power Dissipation: 471 mW
• Supply Current: 0.7 mA

MAX5921A Evaluation Kit
2
DESIGNATION
+VOUT, -VOUT
+VIN, -VIN,
_______________________________________________________________________________________
None
SW1
C1
C2
C3
C4
C5
C6
C7
D1
D2
N1
U1
R1
R2
R3
R4
R5
R6
R7
R8
QTY
0
1
0
1
0
1
1
1
0
1
1
1
1
1
1
1
1
1
1
1
4
1
Not installed, capacitor (0805)
0.015µF ±10%, 100V X7R
ceramic capacitor (0805)
TDK C2012X7R2A153KT
Not installed, capacitor (16 x 16.5)
100µF ±20%, 100V electrolytic
capacitor (16 x 16.5)
Sanyo 100CV100BS
Not installed, capacitor (1206)
4700pF ±10%, 50V X7R ceramic
capacitor (0603)
TDK C1608X7R1H472K
0.1µF ±10%, 100V X7R ceramic
capacitor (1206)
TDK C3216X7R2A104KT
90V ±5% zener diode (SMA)
Central Semiconductor CMZ5948B
Not installed, diode (SMA)
100V 17A N-channel MOSFET
(D^2 PAK)
International Rectifier IRF530NS
0.02Ω ±1%, 0.5W sense resistor
(1206)
IRC LRF1206-01-R020-F
10Ω ±5% resistor (0805)
1kΩ ±1% resistor (0805)
604kΩ ±1% resistor (0603)
14.3kΩ ±1% resistor (0603)
10kΩ ±1% resistor (0603)
100kΩ ±5% resistor (0603)
100Ω ±5% resistor (0805)
Momentary contact switch
MAX5921AESA (8-pin SO)
Noninsulated banana jack
connectors
MAX5921A PC board
Component List
DESCRIPTION
The MAX5921A EV kit is fully assembled and tested.
Follow these steps to verify board operation. Do not
turn on the power supply until all connections are
completed.
1) Utilizing very short 5A rated banana leads (< 6in
2) Connect a voltmeter to the +VOUT and -VOUT out-
3) Connect a voltmeter across the PWRGD and -VIN
4) Turn on the power supply and verify that the output
5) Verify that the voltage at the PWRGD pad is at 0V.
6) Press the push-button SW1 to reset the output.
7) Test point TP1 is provided to observe the MOSFET
Note:
•
•
The MAX5921A EV kit is a hot-swap controller circuit
board that provides a controlled turn-on for high-
capacitive loads, thus preventing glitches on the power-
supply rail. The circuit uses the MAX5921A hot-swap
controller that operates with an input source range of
-20V to -80V connected across the -VIN and +VIN inputs
and can withstand input transients up to -100V. The
MAX5921A features an autoretry mode, configurable
input undervoltage, overvoltage, and overcurrent monitor-
ing. The MAX5921A controls an N-channel MOSFET (N1)
connected between -VIN and -VOUT to provide load cur-
rent regulation.
long) connect the most positive terminal of a 48V
DC power supply to the +VIN banana jack.
Utilizing very short 5A rated banana leads (< 6in
long) connect the most negative terminal of this
power supply to the -VIN banana jack.
put pads.
pads
voltage is -48V.
gate (N1) voltage with an oscilloscope.
When evaluating the MAX5921A EV kit with an
external module, remove resistor R7 and capaci-
tor C4.
The banana leads connecting the power supply
and the load to the EV kit must be very short
(< 6in long) and rated for at least 5A of current.
Detailed Description
Quick Start