Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsDev KitsPCB design board

19-6437; Rev 1; 10/13

Ordering Information appears at end of data sheet.

Component List

*EP = Exposed pad.

MAX17502E Evaluation Kit

Evaluate: MAX17502E in TDFN Package

General Description

The MAX17502E evaluation kit (EV kit) provides a proven

design to evaluate the MAX17502E high-efficiency, high-

voltage, synchronous step-down DC-DC converter. The

EV kit uses this device to generate a fixed 3.3V, at load

currents up to 1A, from a 4.5V to 60V input supply. The

EV kit features a forced-PWM control scheme that pro-

vides constant switching-frequency operation at all load

and line conditions.

Features

S Operates from a 4.5V to 60V Input Supply

S 3.3V Fixed Output Voltage

S 1A Output Current

S 600kHz Switching Frequency

S Enable/UVLO Input

S Resistor-Programmable UVLO Threshold

S Open-Drain RESET Output

S Overcurrent and Overtemperature Protection

S Proven PCB Layout

S Fully Assembled and Tested

DESIGNATION QTY DESCRIPTION

C1 1

2.2FF Q10%, 100V X7R ceramic

capacitor (1210)

Murata GRM32ER72A225K

C2 1

1FF Q10%, 6.3V X7R ceramic

capacitor (0603)

Murata GRM188R70J105K

C3 1

3300pF Q10%, 50V X7R ceramic

capacitor (0402)

Murata GRM155R71H332K

C4 1

22FF Q10%, 10V X7R ceramic

capacitor (1210)

Murata GRM32ER71A226K

C7 1

33FF, 80V aluminum

electrolytic (D = 8mm)

Panasonic EEEFK1K330P

DESIGNATION QTY DESCRIPTION

JU1 1 3-pin header

L1 1

15FH, 2A inductor

(6mm x 6mm x 3.5mm)

Coilcraft LPS6235-153ML

R1 1 3.32MI Q1% resistor (0402)

R2 1 866kI Q1% resistor (0402)

R4 1 100I resistor (0402)

R6 1 10kI Q1% resistor (0402)

TP1, TP2 0 Not installed, test points

U1 1

Buck converter (10 TDFN-EP*)

Maxim MAX17502EATB+

— 1 Shunt

— 1

PCB: MAX17502ET

EVALUATION KIT

For pricing, delivery, and ordering information, please contact Maxim Direct at

1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.

Summary of content (9 pages)

PAGE 1
MAX17502E Evaluation Kit Evaluate: MAX17502E in TDFN Package General Description The MAX17502E evaluation kit (EV kit) provides a proven design to evaluate the MAX17502E high-efficiency, highvoltage, synchronous step-down DC-DC converter. The EV kit uses this device to generate a fixed 3.3V, at load currents up to 1A, from a 4.5V to 60V input supply. The EV kit features a forced-PWM control scheme that provides constant switching-frequency operation at all load and line conditions.
PAGE 2
MAX17502E Evaluation Kit Evaluate: MAX17502E in TDFN Package Component Suppliers SUPPLIER PHONE WEBSITE Coilcraft, Inc. 847-639-6400 www.coilcraft.com Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com Panasonic Corp. 800-344-2112 www.panasonic.com Note: Indicate that you are using the MAX17502 when contacting these component suppliers.
PAGE 3
MAX17502E Evaluation Kit Evaluate: MAX17502E in TDFN Package Detailed Description of Hardware The MAX17502E EV kit provides a proven design to evaluate the MAX17502E high-efficiency, high-voltage, synchronous step-down DC-DC converter. The EV kit generates a fixed 3.3V, at load currents up to 1A, from a 4.5V to 60V input supply. The EV kit features a 600kHz fixed switching frequency for optimum efficiency and component size.
PAGE 4
MAX17502E Evaluation Kit Evaluate: MAX17502E in TDFN Package EV Kit Performance Report LOAD AND LINE REGULATION 3.310 OUTPUT VOLTAGE (V) 3.305 3.300 fCR = 55.2kHz PM = 53° 3.295 3.290 VIN = 36V VIN = 24V VIN = 12V 4 3.285 3.280 0 100 200 300 400 500 600 700 800 900 1000 5 6 7 8 9 1 2 Figure 3. MAX17502E Full-Load Bode Plot (VIN = 24V) LOAD CURRENT (mA) Figure 1. MAX17502E Load and Line Regulation VOUT (AC) 50mV/div EFFICIENCY vs.
PAGE 5
MAX17502E Evaluation Kit Evaluate: MAX17502E in TDFN Package PGND 1 LX PGND 10 VOUT L1 15µH VOUT C4 22µF VIN VIN C1 2.2µF VIN GND 9 3.3V/1A TP2 VOUT R6 10k 1% U1 MAX17502 EN/UVLO R4 100 PGND 2 C7 33µF TP1 3 EN/UVLO RESET 8 EN/UVLO RESET GND VCC 4 VCC N.C. 7 C2 1µF GND 5 FB/VO SS EP 6 C3 3300pF VIN R1 3.32M 1% 1 JU1 2 3 EN/UVLO R2 866k 1% Figure 6.
PAGE 6
MAX17502E Evaluation Kit Evaluate: MAX17502E in TDFN Package 1.0” Figure 7. MAX17502E EV Kit Component Placement Guide— Component Side 1.0” Figure 8. MAX17502E EV Kit PCB Layout—Component Side 1.0” Figure 9.
PAGE 7
MAX17502E Evaluation Kit Evaluate: MAX17502E in TDFN Package 1.0” Figure 10. MAX17502E EV Kit PCB Layout—Top Solder Mask Maxim Integrated 1.0” Figure 11.
PAGE 8
MAX17502E Evaluation Kit Evaluate: MAX17502E in TDFN Package Ordering Information PART TYPE MAX17502ETEVKIT# EV Kit #Denotes RoHS compliant.
PAGE 9
MAX17502E Evaluation Kit Evaluate: MAX17502E in TDFN Package Revision History REVISION NUMBER REVISION DATE 0 10/12 Initial release 1 10/13 Replaced the R4 resistor value from 0W to 100W in the Component List and Figure 6 schematic; added new paragraph to the Procedure section about preventing violation of the abs max rating for FB/VO DESCRIPTION PAGES CHANGED — 1, 2, 5 Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrat