MAX20006EVKIT#

Click here for production status of specific part numbers. MAX20006/MAX20008 Evaluation Kits Evaluate: MAX20004/MAX20006/MAX20008 General Description The MAX20006/MAX20008 evaluation kits (EV kits) demonstrate the MAX20004/MAX20006/MAX20008 highvoltage, current-mode, synchronous step-down converters with low operating current. The EV kits operate over a wide 3.5V to 36V input range. The output is set for 5V in the default configuration but can be adjusted between 1V and 10V with appropriate components. The MAX20004/ MAX20006/MAX20008 current limit supports a nominal output current of 4A/6A/8A, respectively. The EV kit switching frequency is set for either 2.2MHz (MAX20006EVKIT) or 400kHz (MAX20008EVKIT) in the default configuration. The switching frequency is resistor programmable between 220kHz and 2.2MHz and can be synchronized to an external signal. The EV kits can be set for fixed-frequency (PWM mode) or pulse-skipping (SKIP mode) for light load efficiency through the provided on-board jumper. Features Quick Start Required Equipment ●● MAX20006/MAX20008 EV kit ●● 14V, 4A DC power supply ●● Electronic load capable of 8A ●● Digital voltmeter (DVM) Procedure Each EV kit is fully assembled and tested. Follow the steps below to verify board operation. Caution: Do not turn on supplies until all connections are made. 1) Verify that jumpers JU1–JU2 are in their default positions, as shown in Table 1. 2) Connect the 14V power supply between the VIN and nearest GND input terminals on the EV kit. 3) Connect the electronic load between the VOUT and nearest GND output terminals on the EV kit and set for 6A (MAX20006EVKIT) or 8A (MAX20008EVKIT). ●● 25µA No Load Quiescent Current in SKIP Mode 4) Connect the DVM between the VOUT and nearest GND output terminals on the EV kit. ●● High-Efficiency Synchronous DC-DC Converter with Integrated FETs 5) Turn on the power supply. 6) Enable the electronic load. ●● 220kHz to 2.2MHz Adjustable Frequency 7) Verify that the voltage at VOUT is approximately 5V. ●● Operating VIN Range of 3.5V to 36V ●● External Frequency Synchronization (SYNC) Input ●● Internal Soft-Start ●● Fixed 3.3V/5.0V Output or Resistor Programmable 1V to 10V Output ●● Low Dropout (98% Effective Duty Cycle Operation) ●● ±2% Output Voltage Accuracy ●● RESET Output ●● Proven PCB Layout ●● Fully Assembled and Tested Ordering Information appears at end of data sheet. 319-100194; Rev 0; 5/18 Evaluate: MAX20004/MAX20006/MAX20008 MAX20006/MAX20008 Evaluation Kits Detailed Description of Hardware The MAX20006/MAX20008 EV kits come fully assembled and tested. The MAX20006EVKIT is populated with the MAX20006AFOA/VY+, and the MAX20008EVKIT is populated with the MAX20008AFOA/VY+. Other converters in the family can be tested on the same EV kit; however, changing the IC or the output voltage may also require changing other components. Consult the IC data sheet for guidance on selecting the proper ICs and external components. Enable (EN) Place a shunt in the 2-3 position on jumper JU1 to enable the IC for normal operation. To place the device into shutdown mode, move the shunt on JU1 to the 2-1 position. the switching frequency can be synchronized to an appropriate external signal applied to the SYNC input terminal. Setting the Switching Frequency (FOSC) The IC switching frequency is set by a resistor connected from FOSC to AGND. Refer to the IC data sheet for selecting the resistor value. RESET Output The EV kit provides a RESET output to monitor the status of the device output. The RESET output is an open-drain output from the IC with an external pullup resistor to VOUT on the EV kits. Refer to the IC data sheet for details on the RESET functionality. Output Voltage Setting Synchronization and Switching Populating R9 with a 0Ω jumper connects FB to BIAS for a fixed +5V (EV kit default output) or a fixed +3.3V output voltage depending on the IC version. To set the output to other voltages between 1V and 10V, remove R9, populate R1 with a 0Ω jumper, and populate R7/R8/C14 with the appropriate values. Other component modifications might also be required. Refer to the IC data sheet for details on setting the output voltage. Table 1. Enable Control (JU1) Table 2. Operating Mode Control (JU2) The IC has the ability to operate in either forcedPWM mode or in SKIP mode. Place a shunt in the 2-1 position on JU2 to select forced-PWM mode at the resistor-programmed frequency. Removing the shunt from JU2 or placing a shunt in the 2-3 position on jumper JU2 causes the IC to enter SKIP mode for maximum light load efficiency. With a shunt in the 2-3 position on jumper JU2, SHUNT POSITION EN PIN VOUT 2-3* EN tied to VSUP Enabled 2-1 EN tied to GND Disabled *Default configuration. SHUNT POSITION SYNC PIN MODE 2-1* SYNC tied to BIAS Forced PWM 2-3 SYNC pulled to GND with R2 SKIP or external SYNC *Default configuration. Ordering Information PART TYPE MAX20006EVKIT# EV Kit MAX20008EVKIT# EV Kit #Denotes RoHS compliant. www.maximintegrated.com Maxim Integrated │  2 MAX20006/MAX20008 Evaluation Kits Evaluate: MAX20004/MAX20006/MAX20008 MAX20006/MAX20008 EV Kit Bill of Materials Revison: B Date: 02/20/2017 Parts Common to All Variants REFERENCE C1 C2 C3 C4,C5,C7 C8 C9 C10,C11 C13 C14 FB1 QTY 1 1 1 3 1 1 2 0 0 1 DESCRIPTION CAP CER 0.1UF 50V X7R 0402 CAP CER 10UF 35V X7R 1206 CAP ALUM 100UF 20% 35V SMD CAP CER 0.1UF 100V X7R 0603 CAP CER 2.2UF 10V X7R 0603 CAP CER 1000PF 100V X7R 0603 CAP CER 47UF 10V X7R 1210 Not Installed Not Installed FERRITE CHIP 60 OHM 6A 1806 MANUFACTURER TDK TDK PANASONIC MURATA TDK TDK MURATA PART# CGA2B3X7R1H104K050BB C3216X7R1V106K160AC EEEFP1V101AP GRJ188R72A104KE11D C1608X7R1A225K080AC C1608C0G2A102J080AA GRM32ER71A476ME15L MURATA BLM41PG600SH1L J1,J2 R1 R2,R6 2 0 2 3 PIN HEADER 0.100" 40POS CUT TO FIT Not Installed RES SMD 100K OHM 1% 1/10W 0603 TE CONNECTIVITY 4-103327-0 PANASONIC ERJ-3EKF1003V R5,R9 R7 R8 GND,VIN,SYNC,RESET,VOU T,GND 2 0 0 ERJ-3GEY0R00V GND,VIN,VOUT,GND 4 1 RES SMD 0 OHM JUMPER 1/10W 0603 PANASONIC Not Installed Not Installed WIRE LOOP 18AWG SOLID BARE WIRE TINNED BANANA JACK UNINSULATED THREADED EXTERNAL NUT POMONA PCB, MAX20004/6/8 EV Kit 2 POSITION SHUNT CONNECTOR BLACK OPEN TOP 0.100" KYCON LABEL EVINSERT 1 WEB instructions for Maxim Data Sheet BAG, STATIC SHIELD ZIP 5”x6”, W/ ESD LOGO 1 1 FOAM, ANTI-STATIC PE 12”x12”X5MM BOX, BROWN 9 3/16” x 7” x 7/8” 85-MAXKIT-PNK 6 2 1 1 MAX20006EVKIT# Variant (5V 2.2MHz) 3267 SX1100-B 85-84003-006 87-02162-000 C6 C12 L1 R3 R4 1 0 1 1 1 CAP CER 3.9PF 100V C0G 0603 Not Installed INDUCTOR 1UH RES SMD 12K OHM 1% 1/10W 0603 RES SMD 39K OHM 1% 1/10W 0603 MURATA GRM1885C2A3R9CZ01D COILCRAFT PANASONIC PANASONIC XAL6030-102ME ERJ-3EKF1202V ERJ-3EKF3902V U1 1 IC STEP DOWN CONVERTER 17L-FCQFN MAXIM MAX20006AFOA/VY+ MAX20008EVKIT# Variant (5V 400kHz) C6 C12 L1 R3 R4 1 1 1 1 1 CAP CER 27PF 100V C0G 0603 CAP CER 47UF 10V X7R 1210 INDUCTOR 4.7UH RES SMD 73.2K OHM 1% 1/10W 0603 RES SMD 30K OHM 1% 1/10W 0604 MURATA MURATA COILCRAFT PANASONIC PANASONIC GRM1885C2A270JA01D GRM32ER71A476ME15L XAL6060-472ME ERJ-3EKF7322V ERJ-3EKF3002V U1 1 IC STEP DOWN CONVERTER 17L-FCQFN MAXIM MAX20008AFOA/VY+ www.maximintegrated.com Maxim Integrated │  3 SYNC PGND2 PGND VIN 1 1 1 1 1 1 1 1 C4 0.1uF FB1 BIAS JU1 JU2 3 2 1 VSUP C5 0.1uF VSUP + C3 100uF C2 10uF R2 100k BIAS 17 14 13 12 11 10 FOSC GND BIAS LX1 BST OUT COMP RESET FB PGND4 PGND3 PGND2 PGND1 MAX20004/6/8 SYNC EN SUP SUPSW U1 C6 3.9pF 15 2 16 8 7 5 4 6 3 1 R5 0 MAX20006 5V 2.2MHz Application R3 12k C8 2.2uF C1 0.1uF 9 R6 100k VOUT C9 1000pF R4 39k R9 0 BIAS L1 1UF C7 0.1uF R8 NP R7 NP C10 47uF C11 47uF C14 NP C12 NP TP1 1 VIN1 R1 NP C13 NP VOUT TP2 1 www.maximintegrated.com 3 2 1 1 1 1 1 1 1 1 1 RESET PGND PGND4 PGND3 VOUT VOUT1 MAX20006/MAX20008 Evaluation Kits Evaluate: MAX20004/MAX20006/MAX20008 MAX20006/MAX20008 EV Kit Schematic Maxim Integrated │  4 MAX20006/MAX20008 Evaluation Kits Evaluate: MAX20004/MAX20006/MAX20008 MAX20006/MAX20008 EV Kit PCB Layouts MAX20006/MAX20008 EV Kit PCB Layout—Top Layer www.maximintegrated.com Maxim Integrated │  5 MAX20006/MAX20008 Evaluation Kits Evaluate: MAX20004/MAX20006/MAX20008 MAX20006/MAX20008 EV Kit PCB Layouts (continued) MAX20006/MAX20008 EV Kit PCB Layout—Layer 1 www.maximintegrated.com Maxim Integrated │  6 MAX20006/MAX20008 Evaluation Kits Evaluate: MAX20004/MAX20006/MAX20008 MAX20006/MAX20008 EV Kit PCB Layouts (continued) MAX20006/MAX20008 EV Kit PCB Layout—Layer 2 www.maximintegrated.com Maxim Integrated │  7 MAX20006/MAX20008 Evaluation Kits Evaluate: MAX20004/MAX20006/MAX20008 MAX20006/MAX20008 EV Kit PCB Layouts (continued) MAX20006/MAX20008 EV Kit PCB Layout—Bottom Layer www.maximintegrated.com Maxim Integrated │  8 MAX20006/MAX20008 Evaluation Kits Evaluate: MAX20004/MAX20006/MAX20008 Revision History REVISION NUMBER REVISION DATE 0 5/18 DESCRIPTION Initial release PAGES CHANGED — 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. Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. ©  2018 Maxim Integrated Products, Inc. │  9