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General Description

The MAX15039 evaluation kit (EV kit) demonstrates the

MAX15039 6A, 2MHz step-down regulator with integrated

switches for enterprise-server, telecommunication, com-

puting, and networking power-supply applications. The

EV kit is preset for a 1.8V output voltage at load currents

up to 6A from a 2.9V to 5.5V input-voltage range. A 1MHz

switching frequency and up to 95% efficiency (with the

supplied components) is achieved by the EV kit.

Features

o Evaluates Internal 26mΩ R

DSON

High-Side and

20mΩ R

DSON

Low-Side MOSFETs

o 6A Output

o ±1% Output Accuracy Over Load, Line, and

Temperature

o Operates from 2.9V to 5.5V Input Supply

o All-Ceramic Capacitor Design

o 9 Selectable Output Voltages from 0.6V to 2.5V

o Programmable Output Voltages from 0.6V to

(0.9 x V

) through a Resistor-Divider

o 500kHz to 2MHz Adjustable Frequency

o Programmable Soft-Start Time

o REFIN for DDR Termination and Tracking

Applications

o Proven PCB Layout

o Fully Assembled and Tested

Evaluates: MAX15039

MAX15039 Evaluation Kit

________________________________________________________________

Maxim Integrated Products

19-4712; Rev 1; 5/10

Component List

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.

Ordering Information

DESIGNATION QTY DESCRIPTION

C1, C2 2

22µF ±10%, 6.3V X5R ceramic

capacitors (0805)

TDK C2012X5R0J226K

C3, C9 2

0.1µF ±10%, 25V X7R ceramic

capacitors (0603)

TDK C1608X7R1E104K

C4, C6 2

0.01µF ±10%, 50V X7R ceramic

capacitors (0603)

TDK C1608X7R1H103K

C5 1

2.2µF ±10%, 16V X5R ceramic

capacitor (0603)

Murata GRM188R61C225K

C7 0

Not installed, ceramic capacitor

(0603)

C8 1

0.022µF ±10%, 50V X7R ceramic

capacitor (0603)

TDK C1608X7R1H223K

C10 1

560pF ±10%, 50V X7R ceramic

capacitor (0603)

TDK C1608X7R1H561K

C11 1

1500pF ±10%, 50V X7R ceramic

capacitor (0603)

TDK C1608X7R1H152K

C12 1

33pF ±5%, 50V C0G ceramic

capacitor (0603)

TDK C1608C0G1H330CT

DESIGNATION QTY DESCRIPTION

C13, C14 0 N ot i nstal l ed , cer am i c cap aci tor s ( 0805)

C15 1

1000pF ±10%, 50V X7R ceramic

capacitor (0603)

TDK C1608X7R1H102K

IN, OUT, PGND 3 N oni nsul ated b anana j ack connector s

JU1, JU2 2 2-pin headers

JU3, JU4, JU5 3 3-pin headers

L1 1

0.47µH, 8.3mΩ, 9.0A inductor

(7.7mm x 7mm)

TOKO FDV0620-R47

R1 1 2.2Ω ±5% resistor (0603)

R2 1 10kΩ ±5% resistor (0603)

R3 1 1kΩ ±5% resistor (0603)

R4 1 2.67kΩ ±1% resistor (0603)

R5 1 20kΩ ±5% resistor (0603)

R6 1 158Ω ±1% resistor (0603)

R7 1 49.9kΩ ±1% resistor (0603)

R8, R9 0 Not installed, resistors (0603)

U1 1

2MHz buck controller (24 TQFN-EP*)

Maxim MAX15039ETG+

— 5 Shunts (JU1–JU5)

— 1 PCB: MAX15039 EVALUATION KIT+

PART TYPE

MAX15039EVKIT+ EV Kit

Denotes lead(Pb)-free and RoHS compliant.

EP = Exposed pad.

Summary of content (11 pages)

PAGE 1
9-4712; Rev 1; 5/10 MAX15039 Evaluation Kit The MAX15039 evaluation kit (EV kit) demonstrates the MAX15039 6A, 2MHz step-down regulator with integrated switches for enterprise-server, telecommunication, computing, and networking power-supply applications. The EV kit is preset for a 1.8V output voltage at load currents up to 6A from a 2.9V to 5.5V input-voltage range. A 1MHz switching frequency and up to 95% efficiency (with the supplied components) is achieved by the EV kit.
PAGE 2
Evaluates: MAX15039 MAX15039 Evaluation Kit Component Suppliers SUPPLIER PHONE WEBSITE Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com TDK Corp. 847-803-6100 www.component.tdk.com TOKO America, Inc. 847-297-0070 www.tokoam.com Note: Indicate that you are using the MAX15039 when contacting these component suppliers. Quick Start Required Equipment • MAX15039 EV kit • 2.9V to 5.
PAGE 3
MAX15039 Evaluation Kit SHUNT POSITION EN PIN CONNECTION MAX15039 FUNCTION Not installed Pulled up to IN through resistor R2 Enabled Installed GND Disabled Table 2. Reference Voltage (JU2) SHUNT POSITION REFIN PIN CONNECTION Installed U1 SS pin Not installed REFERENCE VOLTAGE The EV kit comes preset to a 1.8V output voltage. The output voltage is selectable using jumpers JU3 (CTL1) and JU4 (CTL2) to provide three logic level inputs: VDD, unconnected, and GND.
PAGE 4
Evaluates: MAX15039 MAX15039 Evaluation Kit Table 3. Output-Voltage Selection (JU3, JU4) SHUNT POSITION (JU3) CTL1 PIN CONNECTION SHUNT POSITION (JU4) CTL2 PIN CONNECTION VOUT (V) VOUT (V) WHEN USING EXTERNAL VREFIN 2-3 GND 2-3 GND 0.6V* or 0.6V < VOUT ≤ 0.9 x VIN** VREFIN* or VREFIN < VOUT ≤ 0.9 x VIN** 1-2 VDD 1-2 VDD 0.7 VREFIN x (7/6) 2-3 GND Not installed Unconnected 0.8 VREFIN x (4/3) 2-3 GND 1-2 VDD 1.0 VREFIN x (5/3) Not installed Unconnected 2-3 GND 1.
PAGE 5
MAX15039 Evaluation Kit Evaluates: MAX15039 Figure 1.
PAGE 6
Evaluates: MAX15039 MAX15039 Evaluation Kit Figure 2.
PAGE 7
MAX15039 Evaluation Kit Evaluates: MAX15039 Figure 3.
PAGE 8
Evaluates: MAX15039 MAX15039 Evaluation Kit Figure 4.
PAGE 9
MAX15039 Evaluation Kit Evaluates: MAX15039 Figure 5.
PAGE 10
Evaluates: MAX15039 MAX15039 Evaluation Kit Figure 6.
PAGE 11
MAX15039 Evaluation Kit REVISION NUMBER REVISION DATE 0 7/09 Initial release 1 5/10 Updated the Detailed Description of Hardware, Reference Voltage (REFIN), and Evaluating Other Output Voltages sections and Table 3 DESCRIPTION PAGES CHANGED — 2, 3, 4 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied.