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MAX5976B Evaluation Kit

Evaluates: MAX5976A/MAX5976B

General Description

The MAX5976B evaluation kit (EV kit) provides a proven

design to evaluate the MAX5976B hot-swap controller

with an integrated 7A MOSFET. The EV kit is configured

to pass 7A into a 2.7V to 18V hot-swap application, thus

providing a fully integrated solution. The EV kit uses the

MAX5976BETE+ in a 5mm x 5mm x 0.8mm, 16-pin TQFN

package on a proven four-layer PCB design.

The EV kit can also be used to evaluate the MAX5976A

after IC replacement of U1.

Features

S 2.7V to 18V Operating-Voltage Range

S Up to 7A Configurable Load-Current Capability

S Banana Jacks for Input and Output Voltage

S Selectable/Configurable Circuit-Breaker Threshold

S Selectable/Configurable Undervoltage Lockout

S Fault and Power-Good LED Indicators

S Slide Switches and Input Pads for Enable Inputs

S Proven PCB Layout

S Fully Assembled and Tested

Ordering Information

Component List

+Denotes lead(Pb)-free and RoHS compliant.

*EP = Exposed pad.

19-5730; Rev 0; 1/11

PART TYPE

MAX5976BEVKIT+ EV Kit

DESIGNATION QTY DESCRIPTION

C1 1

1µF Q10%, 25V X7R ceramic

capacitor (0603)

Murata GRM188R71E105K

C2, C3, C4 3

10µF Q20%, 25V X5R ceramic

capacitors (1206)

Murata GRM31CR61E106M

C5 1

1000pF Q10%, 50V X7R ceramic

capacitor (0603)

Murata GRM188R71H102K

C6 0 Not installed, capacitor (1206)

D1 1

18V, 600W transient voltage

suppressor (SMB)

Fairchild SMBJ18A

D2 1

20V, 1A Schottky rectifier (SMA)

Fairchild SS12

D3 1

5.1V, 250mA zener diode

(SOT23)

Fairchild BZX84C5V1

D4 1 Green LED (1206)

D5 1 Red LED (1206)

FAULT, PG,

REG

3 Test points, white

GND 2 Test points, black

DESIGNATION QTY DESCRIPTION

GND (x2), VIN,

VOUT

Uninsulated banana jacks,

panel mount

JU1 1 3-pin header

JU2 1 2-pin header

N1 1

60V, 115mA n-channel MOSFET

(SOT23)

Fairchild 2N7002

P1 1

-60V, -0.18A, p-channel

MOSFET (SOT23)

Fairchild NDS0605

R1–R5 5

100kI Q5% resistors (0603)

R6, R7 2

1kI Q5% resistors (0805)

R8 1

40.2kI Q1% resistor (0805)

R9 1

50kI SMT cermet trimmer

R10 0 Not installed, resistor (0603)

SW1, SW2,

SW3

SPDT slide switches, 2.5mm

centers

U1 1

Hot-swap controller

(16 TQFN-EP*)

Maxim MAX5976BETE+

— 2 Shunts

— 1

PCB: MAX5976B EVALUATION

KIT+

Summary of content (8 pages)

PAGE 1
9-5730; Rev 0; 1/11 MAX5976B Evaluation Kit The MAX5976B evaluation kit (EV kit) provides a proven design to evaluate the MAX5976B hot-swap controller with an integrated 7A MOSFET. The EV kit is configured to pass 7A into a 2.7V to 18V hot-swap application, thus providing a fully integrated solution. The EV kit uses the MAX5976BETE+ in a 5mm x 5mm x 0.8mm, 16-pin TQFN package on a proven four-layer PCB design. The EV kit can also be used to evaluate the MAX5976A after IC replacement of U1. Features S 2.
PAGE 2
Evaluates: MAX5976A/MAX5976B MAX5976B Evaluation Kit Component Suppliers SUPPLIER PHONE WEBSITE Fairchild Semiconductor 888-522-5372 www.fairchildsemi.com Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com Note: Indicate that you are using the MAX5976B when contacting these component suppliers. Quick Start • MAX5976B EV kit Required Equipment • 12V, 10A DC power supply • Voltmeter Table 1.
PAGE 3
MAX5976B Evaluation Kit SHUNT POSITION CB PIN CONNECTED TO CURRENT LIMIT 1-2* R8 7A 2-3 R9 Not installed Not connected  0.175A   × R9  1000Ω  ILIMIT =  Not allowed *Default position. Table 4. JU2 Jumper Selection (ON1) SHUNT POSITION ON1 PIN CONNECTED TO UNDERVOLTAGE-LOCKOUT THRESHOLD VUVLO = 2.5V where: R10 = open* VIN (through jumper JU2 and resistor-dividers R1 and R10). Note: Set SW1 to pins 1-2 before installing a shunt on JU2.
PAGE 4
Evaluates: MAX5976A/MAX5976B MAX5976B Evaluation Kit Active-Low Enable (ON2) Slide switch SW2 controls the active-low enable pin (ON2) on the device. See Table 6 for switch positions. Present Detect (PRESDET) Slide switch SW3 controls the present-detect pin (PRESDET) on the device. See Table 7 for switch positions. Table 6. SW2 Switch Positions (ON2) SWITCH POSITION ON2 PIN CONNECTED TO VIN (through pullup resistor R2).
PAGE 5
MAX5976B Evaluation Kit Evaluates: MAX5976A/MAX5976B Figure 1.
PAGE 6
Evaluates: MAX5976A/MAX5976B MAX5976B Evaluation Kit 1.0” 1.0” Figure 2. MAX5976B EV Kit Component Placement Guide— Component Side Figure 3. MAX5976B EV Kit PCB Layout—Component Side 1.0” Figure 4.
PAGE 7
MAX5976B Evaluation Kit 1.0” Figure 5. MAX5976B EV Kit PCB Layout—PWR Layer 3 Figure 6. MAX5976B EV Kit PCB Layout—Solder Side _______________________________________________________________________________________ 7 Evaluates: MAX5976A/MAX5976B 1.
PAGE 8
MAX5976B Evaluation Kit Evaluates: MAX5976A/MAX5976B Revision History REVISION NUMBER REVISION DATE 0 1/11 DESCRIPTION Initial release PAGES CHANGED — 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.