MAX5003EVKIT Maxim Integrated Products, MAX5003EVKIT Datasheet - Page 2

• Manufacturer Part Number: MAX5003EVKIT
• Description: EVAL KIT FOR MAX5003
• Manufacturer: Maxim Integrated Products

Specifications of MAX5003EVKIT

• Main Purpose: DC/DC, Step Down
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 5V
• Current - Output: 1A
• Voltage - Input: 36 ~ 72V
• Regulator Topology: Buck
• Frequency - Switching: 300kHz
• Board Type: Fully Populated
• Utilized Ic / Part: MAX5003
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

The MAX5003 EV kit is fully assembled and tested.
Follow these steps to verify board operation in noniso-
lated mode. Do not turn on the power supply until all
connections are completed.
1) Connect a +36V to +72V power supply to the pad
2) Connect a voltmeter and load (if any) to the +5V pad.
MAX5003 Evaluation Kit
Note: Please indicate that you are using the MAX5003 when
contacting the above component suppliers.
2
DESIGNATION
AVX
Central
Semiconductor
Coiltronics
Dale-Vishay
Fairchild
International
Rectifier
Motorola
QT Optoelectronics
Sanyo
Taiyo Yuden
labeled VIN. Do not exceed 100V input voltage.
The ground connects to the GND pad (-48V).
_______________________________________________________________________________________
SUPPLIER
None
None
None
SW1
SW2
R19
R20
R21
U1
U2
U3
T1
Component List (continued)
QTY
0
1
1
1
1
1
1
1
1
1
1
1
Component Suppliers
Not installed
680Ω ±5% resistor
15Ω ±5% resistor
DPDT switch
SPDT switch
65µH, 8:1:2.5 transformer
Coiltronics CTX03-14502
MAX5003EEE (16-pin QSOP)
2.5V voltage reference
Motorola TL431BCD
Low-current optocoupler
QT Opto MOC217
MAX5003 PC board
MAX5003 data sheet
MAX5003 EV kit data sheet
803-946-0690
516-435-1110
561-241-7876
402-564-3131
408-822-2000
310-322-3331
303-675-2140
408-720-1440
619-661-6835
408-573-4150
PHONE
DESCRIPTION
Quick Start
803-626-3123
516-435-1824
561-241-9339
402-563-6418
408-822-2102
310-322-3332
303-675-2150
408-720-0848
619-661-1055
408-573-4159
FAX
3) Verify that switch SW1 is set to the NON position and
4) Turn on the power and verify that the output voltage
5) Refer to the Isolated Feedback section to modify the
Switch SW1 selects the feedback configuration (isolat-
ed or nonisolated). If SW1 is set to the NON position,
switch SW2 selects either direct feedback (for the case
in which the input and output share the same ground)
or level-shifted feedback. Switch SW2 is only effective
when nonisolated feedback is selected. Jumper JU1
determines whether the input and output ground refer-
ences are connected. Table 1 summarizes switch and
jumper functions. Do not operate switches SW1 and
SW2 when power is applied to the EV kit because
the controller can be damaged.
To configure the MAX5003 EV kit for isolated operation,
turn off the power supply and cut the JU1 PC board
trace. Set the SW1 switch to the ISO position, and set
the SW2 switch to the LVL position (setting SW2 to the
Table 1. Switch/Jumper Functions
*Default setting
Nonisolated,
Non-level-shifted Feedback
Mode (e.g., +48V input and
+5V output)
Nonisolated, Level-Shifted
Feedback Mode (e.g.,
-48V input and +5V output)
Isolated Feedback Mode
(input and output supplies
isolated from one another)
SW2 is set to the DIR position. See Table 1 for a de-
scription of the switch settings.
is +5V.
board for isolated operation. Refer to the Nonisolated
Level-Shifted Feedback section to modify the board
for operation with the input and output negative sup-
plies at different potentials.
FUNCTION
Feedback Mode Selection
Detailed Description
SWITCH/
JUMPER
Isolated Feedback
SW1
SW2
SW1
SW2
SW1
SW2
JU1
JU1
JU1
(default trace)
Open (Cut)
Open (Cut)
POSITION
Closed*
NON
NON
DIR
LVL
ISO
LVL