General Description

The MAX16955 evaluation kit (EV kit) is a fully assem-

bled and tested PCB that contains all the components

necessary to evaluate the performance of the MAX16955

synchronous PWM step-down controller. The device is

available in a 16-pin TSSOP package and features an

exposed pad for enhanced thermal dissipation.

The EV kit requires a 6V to 36V power supply for normal

operation. The EV kit output is configured to 5V and can

deliver up to 5A output current. The EV kit can be easily

reconfigured to operate the controller in continuous PWM

mode, SKIP mode, or external synchronization operation.

The controller switching frequency is set to 400kHz. The

EV kit includes a jumper to enable the circuit and an LED

to monitor the power-good output.

Features

S

6V to 36V Input Range

S

5V at Up to 5A Output

S

400kHz Switching Frequency

S

Selectable Forced Fixed-Frequency PWM Mode,

SKIP Mode, or External Synchronization

S

Power-Good LED Indicator

S

Enable Input

S

Cycle-by-Cycle Current Limit and Thermal

Protection

S

Proven PCB Layout

S

Fully Assembled and Tested

DESIGNATION

QTY

DESCRIPTION

BIAS, EN, FSYNC,

OUT (x2),

SUP (x2)

7

Red multipurpose test points

C1

1

0.22FF Q10%, 50V X7R

ceramic capacitor (0805)

Murata GRM21BR71H224K

C2

1

47FF Q20%, 50V electrolytic

capacitor (D8)

Panasonic EEE-FK1H470XP

C4

1

0.1FF Q10%, 50V X7R ceramic

capacitor (0603)

Murata GRM188R71H104K

C5, C9

0

Not installed, ceramic

capacitors (0603)

C6

1

100FF Q20%, 6.3V X5R

ceramic capacitor (1210)

TDK C3325X5R0J107M

C7

1

47FF Q20%, 6.3V X7R ceramic

capacitor (1210)

Murata GRM32ER70J476M

C8

1

1FF Q10%, 16V X7R ceramic

capacitor (0603)

Murata GRM188R71C105K

C10

1

6800pF Q10%, 50V X7R

ceramic capacitor (0603)

Murata GRM188R71H682K

DESIGNATION

QTY

DESCRIPTION

C11

1

4.7FF Q10%, 50V X7R ceramic

capacitor (1206)

Murata GRM31CR71H475K

C13

1

4.7FF Q10%, 50V X7R ceramic

capacitor (1210)

Murata GRM32ER71H475K

D1

1

60V, 3A Schottky diode (SMB)

Diodes Inc. B360B-13-F

D2

1

Red LED (0603)

D3

0

Not installed, Schottky diode

(3 SOT23)

JU1

1

3-pin header

JU2

1

2-pin header

L1

1

5.5FH Q20%,10A inductor

Würth 744325550

N1

1

40V, 6A dual n-channel

MOSFET (8 SO)

Fairchild FDS8949

PGND (x5),

SGND

6

Black multipurpose test points

R2, R5, R6

0

Not installed, resistors (0603)

R4

1

0.015I Q1%, 1/2W resistor

(1206)

IRC LRF1206LF-01-R015-F

R7, R12

2

0I Q5% resistors (0603)

R8

1

66.5kI Q1% resistor (0603)

MAX16955 Evaluation Kit

Evaluates: MAX16955

_________________________________________________________________ Maxim Integrated Products 1

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

Component List

19-5772; Rev 1; 1/12

Ordering Information appears at end of data sheet.