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General Description

The MAX5066 evaluation kit (EV kit) is a two-phase,

dual-output buck converter with a 5V to 16V input volt-

age range. The MAX5066 EV kit provides dual 0.8V and

1.3V output voltages. It delivers up to 10A output cur-

rent for each output with 90% efficiency. The MAX5066

EV kit uses average current-mode control and operates

at 500kHz switching frequency per phase where each

phase is 180° out-of-phase with respect to the other.

This EV kit is a fully assembled and tested circuit

board. Both outputs are adjustable between 0.61V and

5.5V by changing feedback resistors R4, R5, R6, and

R7. Additional features include thermal-shutdown and

“hiccup-mode” short-circuit protection.

Features

♦ 5V to 16V Input Voltage Range (Design Optimized

for 12V Input)

♦ Output Voltages

0.8V at 10A (Adjustable from 0.61V to 5.5V)

1.3V at 10A (Adjustable from 0.61V to 5.5V)

♦ 500kHz Switching Frequency

♦ Both Outputs Can be Paralleled for Higher

Current Capability (Using Mode Function)

♦ Average Current-Mode Control Provides Accurate

Current Limit

♦ Current-Sharing Accuracy within ±5% Between

Parallel Channels

♦ 180° Interleaved Operation Reduces Size of Input

Filter Capacitors

♦ Overtemperature Shutdown

♦ Excellent Line- and Load-Transient Response

♦ Hiccup-Mode Overcurrent Protection

♦ Can be Synchronized to an External Clock

♦ Low-Profile Components

♦ Fully Assembled and Tested

Evaluates: MAX5066

MAX5066 Evaluation Kit

________________________________________________________________

Maxim Integrated Products

19-4004; Rev 1; 8/06

Component List

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.

Ordering Information

Component Suppliers

PART TEMP RANGE IC PACKAGE

MAX5066EVKIT 0°C to +70°C 28 TSSOP

DESIGNATION QTY DESCRIPTION

C1, C2 2

10µF ±20%, 25V X5R (1812) ceramic

capacitors

Taiyo Yuden TMK432BJ106KM

TDK C4532X5R1E106M

C3 1

4.7µF ±20%, 6.3V X5R (0805)

ceramic capacitor

Murata GRM21BR60J475M

Taiyo Yuden JMK212BJ475MG

TDK C2012X5R0J475M

C4–C7, C24 5

0.1µF ±10%, 25V X7R (0603) ceramic

capacitors

Kemet C0603C104K3RAC

Murata GRM188R71E104K

TDK C1608X7R1E104K

DESIGNATION QTY DESCRIPTION

C8, C13, C14 3

1µF ±10%, 16V X5R (0805) ceramic

capacitors

Kemet C0805C105K4PAC

Taiyo Yuden EMK212BJ105KG

TDK C2012X5R1C105K

C9–C12,

C20–C23

100µF ±20%, 6.3V X5R (1210)

ceramic capacitors

TDK C3225X5R0J107M

C15 1

0.22µF, 10V X7R (0603) ceramic

capacitor

Taiyo Yuden LMK107BJ224MA or

TDK C1608X7R1C224M

SUPPLIER PHONE WEBSITE

Central

Semiconductor

631-435-1110 www.centralsemi.com

Dale-Vishay 402-564-3131 www.vishay.com

Fairchild 888-522-5372 www.fairchildsemi.com

International

Rectifier

310-322-3331 www.irf.com

IRC 361-992-7900 www.irctt.com

Kemet 864-963-6300 www.kemet.com

Murata 770-436-1300 www.murata.com

Nihon 847-843-7500 www.niec.co.jp

Sanyo 619-661-6835 www.sanyodevice.com

Sumida 847-545-6700 www.sumida.com

Taiyo Yuden 800-348-2496 www.t-yuden.com

TDK 847-803-6100 www.component.tdk.com

Toshiba 408-526-2459 www.toshiba.com

Note: Indicate that you are using the MAX5066 when contact-

ing these component suppliers.

Summary of content (6 pages)

PAGE 1
9-4004; Rev 1; 8/06 MAX5066 Evaluation Kit The MAX5066 evaluation kit (EV kit) is a two-phase, dual-output buck converter with a 5V to 16V input voltage range. The MAX5066 EV kit provides dual 0.8V and 1.3V output voltages. It delivers up to 10A output current for each output with 90% efficiency. The MAX5066 EV kit uses average current-mode control and operates at 500kHz switching frequency per phase where each phase is 180° out-of-phase with respect to the other.
PAGE 2
Evaluates: MAX5066 MAX5066 Evaluation Kit Component List (continued) DESIGNATION QTY C16 1 C17 1 C18 1 C19 1 D1, D2 2 D3, D4 2 JU1, JU2, JU3 3 DESCRIPTION 68pF ±5%, 50V C0G (0603) ceramic capacitor Kemet C0603C680J5GAC Murata GRM1885C1H680J Taiyo Yuden UMK107CG680JZ TDK C1608C0G1H680J 6800pF ±10%, 50V X7R (0603) ceramic capacitor Kemet C0603C682K5RAC Taiyo Yuden UMK107B682KZ TDK C1608X7R1H682K 150pF ±5%, 50V C0G (0603) ceramic capacitor Kemet C0603C151J5GAC Murata GRM1885C1H151J Taiyo Yuden
PAGE 3
MAX5066 Evaluation Kit JU2 EN2 PIN OUT2 1 and 2 (default) Connected to VREG OUT2 is enabled, VOUT2 = 1.3V 2 and 3 Connected to GND OUT2 is disabled, VOUT2 = 0V Dual-Output/Dual-Phase Select (Mode Function) The MAX5066 can operate as a dual-output, independently regulated buck converter, or as a dual-phase, single-output buck converter. The MODE input selects between the two operating modes. When MODE is grounded (logic-low), the MAX5066 operates as a twooutput DC-DC converter.
PAGE 4
GND GND VOUT1 0.8V, 10A VOUT1 R5 4.64kΩ 1% R4 1.74kΩ 1% C9 C10 C11 C12 100μF 100μF 100μF 100μF 6.3V 6.3V 6.3V 6.3V C8 1.0μF 16V R1 0.002Ω 1% C5 0.1μF R3 1Ω VREG CLKIN VREG L1 0.8μH C6 0.1μF 8 3 R13 0Ω 2 1 1 6 5 5 4 4 7 REF 6 U1 IN 22 VIN EAN2 CSN2 CSP2 PGND DL2 LX2 DH2 BST2 REG AGND 8 CLP2 CLP1 MODE EAOUT2 MAX5066 RT/CLKIN EN2 EN1 EAOUT1 EAN1 CSN1 CSP1 DL1 LX1 DH1 BST1 VDD C15 0.22μF 10V 28 15 12 11 14 13 19 18 17 16 20 C24 0.
PAGE 5
MAX5066 Evaluation Kit Figure 3. MAX5066 EV Kit PC Board Layout—Component Side Figure 4. MAX5066 EV Kit PC Board Layout—Internal Layer 2—AGND Plane Figure 5. MAX5066 EV Kit PC Board Layout—Internal Layer 3—PGND Layer _______________________________________________________________________________________ 5 Evaluates: MAX5066 Figure 2.
PAGE 6
Figure 6. MAX5066 EV Kit PC Board Layout—Solder Side Figure 7. MAX5066 EV Kit Component Placement Guide— Solder Side EFFICIENCY vs. OUTPUT CURRENT AND INPUT VOLTAGE EFFICIENCY vs. OUTPUT CURRENT AND INPUT VOLTAGE 100 100 90 90 80 80 70 70 EFFICIENCY (%) EFFICIENCY (%) Evaluates: MAX5066 MAX5066 Evaluation Kit 60 50 40 30 60 50 40 30 20 20 VIN = 5V VIN = 12V 10 0 0 1 2 3 4 5 6 7 8 9 VIN = 5V VIN = 12V 10 0 10 OUTPUT CURRENT (A) Figure 8. Efficiency vs.