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Technical content

Features

  • High Integration Solution/Integrated Shielded Inductor
  • 2.4V to 5.5V Input Range
  • Configured for 1.5V Output Voltage
  • Adjustable Output Voltage Range (0.75V to 3.6V)
  • 4A Output Current
  • 91.2% Efficiency (VIN = 3.3V, VOUT = 1.5V at 1.5A)
  • 1MHz Switching Frequency
  • Enable Input
  • Power-Good Output Indicator (POK)
  • Low-Profile, Surface-Mount Components
  • Proven PCB Layout
  • Fully Assembled and Tested 19-7560; Rev 0; 4/15 Ordering Information appears at end of data sheet.
  • MAXM17514 EV kit
  • 2.4V to 5.5V DC power supply (V IN)
  • 5V DC power supply (VCC)
  • Dummy load capable of sinking 4A
  • Digital multimeter (DMM)
  • 100MHz dual-trace oscilloscope Procedure The EV kit is fully assembled and tested. Follow the steps below to verify board operation. Caution: Do not turn on the power supply until all connections are completed. 1) Ensure that the circuit is connected correctly to the supplies and dummy load prior to applying any power. 2) Verify that a shunt is installed across jumper JU1. 3) Enable the power supply (VIN = 5V) 4) Observe the 1.5V output with the DMM and/or oscilloscope. Look at the EP2 switching node while varying the load current. Detailed Description of Hardware Input Supply Voltage The MAXM17514 EV kit can operate from a minimum 4.5V single DC power supply at V IN PCB pad with a shunt installed across JU1. The EV kit is also configured to power a lower input voltage at V IN PCB pad, which requires an additional 5V power supply at V CC PCB pad, a capacitor (C4) to be installed, and a connecting trace between V IN and V CC (next to R3’s footprint) to be cut. Table 1 lists all operating configurations of the EV kit at different input voltage sources. The electrolytic capacitor (C1) is required only when the VIN power supply is situated far from the MAXM17514 circuit. On the bottom layer, additional footprints of optional components are included to ease the board modification for different input/ output configurations. Enable Input The EV kit features a 2-pin jumper (JU1) that selects the enable/disable control input. The shunt is installed across JU1 to enable the device and vice versa. Switching Frequency (FREQ) The EV kit features a PWM mode switching frequency. The switching frequency is fixed at 1MHz. Programming the Output Voltage The EV kit includes a default output programmed at 1.5V and also produces an adjustable 0.75V to 3.6V output voltage by connecting FB to a resistive divider. To obtain an output voltage other than the default programmed output, simply modify the R1 and R2 resistors with values according to the following equation: OUT FB R1V V1 R2 where V FB = 0.765V. Output capacitance selection changes are required for an output voltage greater than 2V or capacitor temperatures above 105°C. Refer to the MAXM17514 data sheet for output capacitance selection.

Table 1. Jumper JU1 Functions

Maxim Integrated │ 3 www.maximintegrated.com Evaluates: MAXM17514, 4A Integrated Power Module MAXM17514 Evaluation Kit 100 100 1000 10000 EFFICIENCY (%) OUTPUT CURRENT (mA) EFFICIENCY vs. OUTPUT CURRENT toc01 VOUT = 1.5V VCC = 5.0V VIN = 5V VIN = 3.3V LOAD CURRENT TRANSIENT RESPONSE VIN = 5V, VOUT = 1.5V, IOUT = 2A TO 4A 2A/div toc03 10µs/div IOUT VOUT 50mV/div (AC- COUPLED) VOLTAGE RIPPLE VIN = 5V, VOUT = 1.5V, IOUT = 4A 100mV/div (AC- COUPLED) toc02 1µs/div VIN VOUT IIN IOUT 20mV/div (AC- COUPLED) 5A/div 5A/div STARTUP WAVEFORM VIN = 5V, VOUT = 1.5V, IOUT = 4A 1A/div toc04 400µs/div IIN VOUT 5A/div VEN IOUT 1V/div 5V/div SHUTDOWN WAVEFORM VIN = 5V, VOUT = 1.5V, IOUT = 4A 1A/div toc05 100µs/div IIN VOUT 5A/div VEN IOUT 1V/div 5V/div (VCC = 5V, VIN = 3.3V to 5V, VOUT = 1.5V, IOUT = 0–4A, TA = +25°C, unless otherwise noted.) Typical Operating Characteristics

Maxim Integrated │ 4 www.maximintegrated.com Evaluates: MAXM17514, 4A Integrated Power Module MAXM17514 Evaluation Kit Note: Indicate that you are using the MAXM17514 when contacting these component suppliers. SUPPLIER PHONE WEBSITE Keystone Electronics Corp. 800-221-5510 www.keyelco.com Lite-On, Inc. 408-946-4873 www.liteon.com Murata Americas 800-241-6574 www.murataamericas.com Panasonic Corp. 800-344-2112 www.panasonic.com TDK Corp. 847-803-6100 www.component.tdk.com Component Suppliers Component List and Schematic Refer to the following files attached to this data sheet for component information and schematic:

  • MAXM17514_EV_BOM.xls
  • MAXM17514_EV_Schematic.pdf

Maxim Integrated │ 7 www.maximintegrated.com Evaluates: MAXM17514, 4A Integrated Power Module MAXM17514 Evaluation Kit #Denotes RoHS compliant. PART TYPE MAX17514EVKIT# EV Kit

Ordering Information

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. © 2015 Maxim Integrated Products, Inc. │ 8 Evaluates: MAXM17514, 4A Integrated Power Module MAXM17514 Evaluation Kit REVISION NUMBER REVISION DATE DESCRIPTION PAGES CHANGED 0 4/15 Initial release —

Revision History

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.