MAX8555AEVKIT Maxim Integrated Products, MAX8555AEVKIT Datasheet

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MAX8555AEVKIT

Manufacturer Part Number
MAX8555AEVKIT
Description
EVAL KIT FOR MAX8555
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX8555AEVKIT

Main Purpose
Power Management, ORing Controller / Load Share
Utilized Ic / Part
MAX8555A
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Secondary Attributes
-
Embedded
-
Primary Attributes
-
The MAX8555A evaluation kit (EV kit) demonstrates the
functionality of the MAX8555A ORing MOSFET con-
troller, which provides redundancy and fault isolation to
highly reliable power systems. The EV kit is configured
for 1.5V operation, but can also be modified to operate
in 0.5V to 3.3V power systems.
During startup, the EV kit monitors the voltage differ-
ence between the power supplies VIN1 or VIN2 and a
system power bus VOUT. Once the voltage difference
is less than 50mV (typ), the MAX8555A turns on the two
associated ORing MOSFETs, connecting the power
supply to the system power bus. Once the MOSFETs
are fully on, the EV kit circuit monitors the supply cur-
rent and voltages to protect against undervoltage
(UVP), overvoltage (OVP), and reverse-current fault
conditions. PC board pads for fault output signals are
provided for circuit monitoring.
19-3198; Rev 0; 2/04
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.
C4, C5, C9, C10
DESIGNATION
C11, C12, C13
C14, C15, C16
C17, C18
C1, C6
C2, C7
C3, C8
________________________________________________________________ Maxim Integrated Products
QTY
0
2
2
4
3
3
2
General Description
Not installed, ceramic capacitors
(0603)
0.01µF 10%, 50V X7R ceramic
capacitors (0603)
TDK C1608X7R1H103K or
Taiyo Yuden UMK107B103KZ
0.1µF 10%, 50V X7R ceramic
capacitors (0603)
TDK C1608X7R1H104K or
Taiyo Yuden UMK107BJ104KA
1000pF 10%, 50V X7R ceramic
capacitors (0603)
TDK C1608X7R1H102K or
Taiyo Yuden UMK107B102KZ
1000µF 20%, 6.3V electrolytic
capacitors (8 x 10.2)
SANYO 6CV1000AX
1µF 10%, 10V X7R ceramic
capacitors (0603)
TDK C1608X7R1A105K
150pF 5%, 50V C0G ceramic
capacitors (0603)
TDK C1608C0G1H151J
DESCRIPTION
MAX8555A Evaluation Kit
DESIGNATION
MAX8555AEVKIT
R8, R16, R17,
1+1 Redundant System for a 1.5V Bus
(0.5V to 3.3V with Modifications)
Eliminates ORing Diode Power Dissipation
Reverse-Current Detection
Adjustable Undervoltage Threshold
(Configured to 0.75V)
Adjustable Overvoltage Threshold
(Configured to 2V)
FAULT Output Status Indicator
Adjustable Soft-Start
Supports Up to 20A of Load Current
Surface-Mount Construction
Fully Assembled and Tested
VOUT, GND,
VIN1, VIN2,
GND, GND
JU1, JU2
R13, R14
TP1, TP2
R2, R10
R3, R11
R4, R12
R7, R15
U1, U2
N1–N4
R1, R9
None
None
R18
PART
R5
R6
QTY
2
4
2
2
2
2
1
1
2
0
2
2
2
6
2
1
Ordering Information
TEMP RANGE
0 C to +70 C
2-pin headers
30V, 75A, N-channel MOSFETs
(D
Vishay SUB75N03-04 or
Fairchild FDB7045L
2.2
47.5k
4.99k
10k
3.01k
1k
24.9k
Not installed, resistors (0603)
6.04k
PC test points (red)
Noninsulated banana jack
connectors
Shunts (JU1, JU2)
MAX8555A PC board
MAX8555AEUB (10-pin µMAX)
2
PAK)
1% resistor (0603)
Component List
5% resistors (0603)
1% resistors (0603)
1% resistors (0603)
1% resistors (0603)
1% resistor (0603)
1% resistors (0603)
1% resistors (0603)
DESCRIPTION
Features
IC PACKAGE
10 µMax
1

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MAX8555AEVKIT Summary of contents

Page 1

... Adjustable Overvoltage Threshold (Configured to 2V) FAULT Output Status Indicator Adjustable Soft-Start Supports Up to 20A of Load Current Surface-Mount Construction Fully Assembled and Tested Ordering Information PART TEMP RANGE MAX8555AEVKIT +70 C DESIGNATION QTY JU1, JU2 2 2-pin headers 30V, 75A, N-channel MOSFETs 2 (D N1–N4 ...

Page 2

MAX8555A Evaluation Kit SUPPLIER Fairchild Sanyo Taiyo Yuden TDK Vishay Note: Please indicate that you are using the MAX8555A when contacting these component suppliers. The MAX8555A EV kit is a fully assembled and tested surface-mount board. Follow the steps below ...

Page 3

VIN1 and VIN2 for normal operation. Note: Each circuit (top or bottom) can be evaluated inde- pendently by not applying power to the other circuit. Undervoltage Threshold The UVP threshold for ...

Page 4

MAX8555A Evaluation Kit The GATE pin on the MAX8555A controller provides the necessary gate drive for both MOSFETs in each circuit on the EV kit. The GATE voltage can be monitored with an oscilloscope (10MΩ impedance) connected to test point ...

Page 5

Figure 1. MAX8555A EV Kit Schematic _______________________________________________________________________________________ MAX8555A Evaluation Kit 5 ...

Page 6

MAX8555A Evaluation Kit Figure 2. MAX8555A EV Kit Component Placement Guide—Component Side 6 _______________________________________________________________________________________ ...

Page 7

Figure 3. MAX8555A EV Kit PC Layout—Component Side (Layer 1) _______________________________________________________________________________________ MAX8555A Evaluation Kit 7 ...

Page 8

MAX8555A Evaluation Kit Figure 4. MAX8555A EV Kit PC Layout—Ground Layer (Layer 2) 8 _______________________________________________________________________________________ ...

Page 9

Figure 5. MAX8555A EV Kit PC Layout (Layer 3) _______________________________________________________________________________________ MAX8555A Evaluation Kit 9 ...

Page 10

... 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. 10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2004 Maxim Integrated Products Printed USA ...

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