MAXM17515EVKIT#

Evaluates: MAXM17515, 5A Integrated Power Module MAXM17515 Evaluation Kit General Description The MAXM17515 evaluation kit (EV kit) is a fully assembled and tested PCB that demonstrates the typical 5A application circuit of the MAXM17515. The MAXM17515 is a fixed-frequency, integrated inductor, step-down power module for low-voltage, low-power applications. The EV kit provides a 1.5V output voltage from a 2.4V to 5.5V input range and delivers up to 5A output current while achieving greater than 91.2% efficiency. The EV kit operates at a 1MHz switching frequency and has superior line and load-transient response. The EV kit also allows the evaluation of other adjustable output voltages from 0.75V to 3.6V by changing resistors R1 and R2. Ordering Information appears at end of data sheet. 19-7608; Rev 0; 4/15 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) ●● 5A 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 Evaluates: MAXM17515, 5A Integrated Power Module MAXM17515 Evaluation Kit Quick Start Recommended Equipment ●● MAXM17515 EV kit ●● 2.4V to 5.5V DC power supply (VIN) ●● 5V DC power supply (VCC) ●● Dummy load capable of sinking 5A ●● 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. 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: R1   V= OUT VFB 1 +  R2   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 EV kit can operate from a minimum 4.5V single DC power supply at the VIN PCB pad with a shunt installed across JU1. The EV kit is also configured to power a lower input voltage at the VIN PCB pad, which requires an additional 5V power supply at VCC PCB pad, a capacitor, (C4) to be installed, and a connecting trace between VIN and VCC (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 MAXM17515 circuit. On the bottom layer, additional footprints of optional components are included to ease board modification for different input/output configurations. www.maximintegrated.com where VFB = 0.75V. Output capacitance selection changes are required for either an output voltage greater than 2V or the capacitor temperature rises above 105°C. Refer to the MAXM17515 IC data sheet for output capacitance selection. Table 1. Jumper JU1 Functions SHUNT (JU1) POSITION VIN/VCC RANGE REGULATOR OUTPUT Installed VIN = 4.5V to 5.5V VCC = VIN Enabled Installed VIN = 2.4V to 5.5V Require an additional VCC = 4.5V to 5.5V Enabled Not installed* VIN = 2.4V to 5.5V VCC = VIN Disabled *The thin trace connecting VIN and VCC (next to R3’s footprint) must be cut before applying the additional power supply to the VCC PCB pad. Maxim Integrated │  2 Evaluates: MAXM17515, 5A Integrated Power Module MAXM17515 Evaluation Kit Typical Operating Characteristics (VCC = 5V, VIN = 3.3V to 5V, VOUT = 1.5V, IOUT = 0–5A, TA = +25°C, unless otherwise noted.) VOLTAGE RIPPLE (VIN = 5V, VOUT = 1.5V, IOUT = 5A) EFFICIENCY vs. OUTPUT CURRENT MAXM17515EV toc02 MAXM17515EV toc01 100 VIN = 3.3V 95 EFFICIENCY (%) 90 85 VIN = 5V 80 VIN 100mV/div (AC-COUPLED) VOUT 20mV/div (AC-COUPLED) IIN 5A/div IOUT 5A/div 75 70 VOUT = 1.5V VCC = 5.0V 65 60 1k 100 1µs/div 10k OUTPUT CURRENT (mA) STARTUP WAVEFORM (VIN = 5V, VOUT = 1.5V, IOUT = 5A) LOAD CURRENT TRANSIENT RESPONSE (VIN = 5V, VOUT = 1.5V, IOUT = 2.5A TO 5A) MAXM17515EV toc04 MAXM17515EV toc03 5V/div 50mV/div (AC-COUPLED) VOUT VEN 1V/div VOUT IOUT 5A/div IIN 5A/div 5A/div IOUT 1ms/div 1ms/div SHUTDOWN WAVEFORM (VIN = 5V, VOUT = 1.5V, IOUT = 5A) MAXM17515EV toc05 VEN 5V/div VOUT 1V/div IIN 5A/div IOUT 5A/div 1ms/div www.maximintegrated.com Maxim Integrated │  3 Evaluates: MAXM17515, 5A Integrated Power Module MAXM17515 Evaluation Kit Component Suppliers SUPPLIER WEBSITE Keystone Electronics Corp. www.keyelco.com Lite-On, Inc. www.liteon.com Murata Americas www.murata.com Panasonic Corp. www.panasonic.com TDK Corp. www.component.tdk.com Note: Indicate that you are using the MAXM17515 when contacting these component suppliers. Component List and Schematic Refer to the following files attached to this data sheet for component information and schematic: ●● MAXM17515_EV_BOM.xls ●● MAXM17515_Schematic.pdf www.maximintegrated.com Maxim Integrated │  4 MAXM17515 Evaluation Kit Figure 1. MAXM17515 EV Kit Component Placement Guide— Component Side Evaluates: MAXM17515, 5A Integrated Power Module Figure 2. MAXM17515 EV Kit Component Placement Guide— Solder Side Figure 3. MAXM17515 EV Kit PCB Layout—Component Side www.maximintegrated.com Maxim Integrated │  5 Evaluates: MAXM17515, 5A Integrated Power Module MAXM17515 Evaluation Kit Figure 4. MAXM17515 EV Kit PCB Layout—PGND Layer 2 Figure 5. MAXM17515 EV Kit PCB Layout—PGND Layer 3 Figure 6. MAXM17515 EV Kit PCB Layout—Solder Side www.maximintegrated.com Maxim Integrated │  6 MAXM17515 Evaluation Kit Evaluates: MAXM17515, 5A Integrated Power Module Ordering Information PART MAXM17515EVKIT# TYPE EV Kit #Denotes RoHS compliant. www.maximintegrated.com Maxim Integrated │  7 Evaluates: MAXM17515, 5A Integrated Power Module MAXM17515 Evaluation Kit Revision History REVISION NUMBER REVISION DATE 0 4/15 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. © 2015 Maxim Integrated Products, Inc. │  8