19-2649; Rev 0; 10/02
MAX8515 Evaluation Kit
General Description
Features
The MAX8515 evaluation kit (EV kit) is a fully assembled
and tested surface-mount circuit board that demon-
strates the capability of the MAX8515A shunt regulator
in a voltage-regulation circuit and the MAX8515 shunt
regulator in an overvoltage protection (OVP) circuit for
isolated DC-to-DC converters.
o Isolated Voltage Regulation Feedback Circuit—
Set to 0.8V Threshold
o Isolated OVP Circuit—Set to 1V Threshold
o Adjustable Output-Voltage Thresholds
o Galvanically Isolated Input and Output Grounds
o Surface-Mount Components
The EV kit circuit is designed to operate from an input
voltage supply with a nominal output of 8V and an output
voltage range of 6V to 10V. The input voltage can be
adjusted from 1.8V to 18V by replacing circuit compo-
nents. The voltage-regulation circuit and the OVP circuit
have their thresholds set to 0.8V and 1V, respectively.
The thresholds can be adjusted by replacing feedback
resistors on the circuit board.
o Fully Assembled and Tested
Component List
Ordering Information
PART
TEMP RANGE
IC PACKAGE
DESIGNATION QTY
DESCRIPTION
MAX8515EVKIT
0°C to +70°C
5 SC70/SOT23
0.22µF 10%, 35V X7R ceramic
capacitors (0805)
C1, C5
2
Taiyo Yuden GMK212BJ224KG
TDK C2012X7R1H224KT
Quick Start
The MAX8515 EV kit is fully assembled and tested.
Follow the steps below to verify board operation. Do not
turn on the power supplies until all connections are
completed.
Not installed, ceramic capacitors
(0603)
C2, C3
0
C4, C6
R1, R8
R2, R10
R3
0
2
0
1
2
2
2
2
1
Not installed, capacitors (0805)
1k
5% resistors (0603)
Equipment Required
• 5VDC power supply
Not installed, resistor (0603)
• 8VDC power supply
3.3k
10k
2k
0.1% resistor (0603)
0.1% resistors (0603)
5% resistors (0603)
5% resistors (0603)
5% resistors (0603)
0.1% resistor (0603)
R4, R12
R5, R9
R6, R13
R7, R14
R11
• 0.5V to 1.5V adjustable power supply
• 2 voltmeters
100k
1.5k
6.2k
Procedure
1) Connect voltmeters across the VC and PGND pads
and across the OVP and PGND pads.
MAX8515AEXK (5-pin SC70),
top mark: ADX
2) Connect the 5VDC power supply to the VREF pad.
Connect the supply ground to the PGND pad.
U1
U2
1
1
3) Connect the adjustable power supply to the VOUT
pad. Connect the supply ground to the GND pad.
MAX8515EZK (5-pin SOT23),
top mark: ADRL
Opto-isolators (8-pin SO)
Fairchild MOC207
U3, U4
None
2
1
MAX8515 PC board
Component Suppliers
SUPPLIER
PHONE
FAX
WEBSITE
www.fairchildsemi.com
www.t-yuden.com
Fairchild
888-522-5372
800-348-2496
847-803-6100
Local rep only
847-925-0899
847-390-4405
Taiyo Yuden
TDK
www.component.tdk.com
Note: Please indicate that you are using the MAX8515 when contacting these component suppliers.
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.