19-2820; Rev 0; 3/03
MAX8536 Evaluation Kit
General Description
Features
ꢀ Fault Power-Supply Isolation for 5V and 3.3V Bus
ꢀ Eliminates ORing Diode Power Dissipation
ꢀ Reverse-Current Detection
The MAX8536 evaluation (EV) kit circuit demonstrates
the functionality of the MAX8536 ORing MOSFET con-
troller that provides redundancy and fault isolation to
highly reliable power systems. The MAX8536 EV kit
board can operate in 5V and 3.3V systems. The EV kit is
configured for 5V operation.
ꢀ Adjustable Undervoltage Threshold
(Configured to 2.9V)
During startup, the EV kit monitors the voltage differ-
ence between a power supply and a power bus. Once
the voltage difference is less than 0.4V (typ), the
MAX8536 turns on two ORing MOSFETs, linking the
power supply and power bus. Once the MOSFETs are
on, the EV kit monitors the load current and voltages to
protect against undervoltage (UVP), overvoltage (OVP),
and reverse-current fault conditions.
ꢀ Adjustable Overvoltage Threshold
(Configured to 5.75V)
ꢀ FAULT Output Status Indicator
ꢀ Adjustable Soft-Start
ꢀ Up to 20A of Load Current
ꢀ Surface-Mount Construction
ꢀ Fully Assembled and Tested
The OVP and UVP thresholds are adjustable and can
be disabled. The UVP threshold is set to 2.9V, and the
OVP threshold is set to 5.75V. A FAULT signal output is
provided for circuit monitoring.
Ordering Information
PART
TEMP RANGE
IC PACKAGE
MAX8536EVKIT
0°C to +70°C
8 µMAX
Component List
DESIGNATION QTY
DESCRIPTION
DESIGNATION QTY
DESCRIPTION
0.01µF 10ꢀ, 50V X7R ceramic
capacitor (0603)
TDK C1608X7R1H103K or
Taiyo Yuden UMK107B103KZ
PS_OUT+,
PS_OUT-,
VBUS+, VBUS-
Noninsulated banana jack
connectors
4
C1
1
R1
R2
1
1
1
2
1
1
1
1
1
1
10Ω 5ꢀ resistor (0805)
51kΩ 5ꢀ resistor (0805)
13.3kΩ 1ꢀ resistor (0805)
10kΩ 1ꢀ resistors (0805)
35.7kΩ 1ꢀ resistor (0805)
24.9kΩ 1ꢀ resistor (0805)
PC test point, red
0.1µF 10ꢀ, 50V X7R ceramic
capacitor (0603)
Taiyo Yuden UMK107BJ104KA or
TDK C1608X7R1H104K
C2
C3
1
1
R3
R4, R6
R5
1µF 10ꢀ, 10V X5R ceramic
capacitor (0603)
TDK C1608X5R1A105K
R7
Not installed, ceramic capacitors
(0805)
C4, C5
JU1
0
1
2
TP1
U1
MAX8536EUA (8-pin µMAX)
Shunt (JU1)
3-pin header
2
None
None
30V, 75A, N-MOSFETs (D -PAK)
N1, N2
Fairchild FDB7045L
MAX8536 PC board
________________________________________________________________ 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.