MAX17515EVKIT#

Evaluates: MAX17515, 5A Integrated Power Module MAX17515 Evaluation Kit General Description The MAX17515 evaluation kit (EV kit) is a fully assembled and tested PCB that demonstrates the typical 5A application circuit of the MAX17515. The MAX17515 is a fixedfrequency, 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 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. 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 Component List DESIGNATION QTY DESCRIPTION C1 1 33µF ±20%, 10V X5R electrolytic capacitors (B case) Panasonic EEEFK1A330UR 1 22µF ±20%, 10V X5R ceramic capacitors (1206) TDK C3216X5R1A226M160AC 1 220µF, 2.5V, 13mΩ ESR POS capacitor (B2 case) Panasonic 2R5TPE220MFGB 0 Not installed, 1µF ±20%, 16V X7R ceramic capacitor (0603) Murata GRM188R71C105K TDK C1608X7R1C105K C2 C3 C4 DESIGNATION QTY DESCRIPTION D1 1 Green LED, clear (0805) Lite-On LTST-C170GKT JU1 1 2-pin headers R1, R2 2 47.5kΩ ±1% resistor (0603) R3 1 1kΩ ±5% resistor (0603) U1 1 5A, 2.4V to 5.5V input, high-efficiency power module Maxim MAX17515LI+ — 1 Shunt — 1 PCB: MAX17515 EVKIT 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 Note: Indicate that you are using the MAX17515 when contacting these component suppliers. 19-6705; Rev 1; 9/13 Evaluates: MAX17515, 5A Integrated Power Module MAX17515 Evaluation Kit Quick Start Switching Frequency (FREQ) Recommended Equipment The EV kit features a PWM-mode switching frequency. The switching frequency is fixed at 1MHz. ●● 2.4V to 5.5V DC power supply (VIN) Programming the Output Voltage ●● MAX17515 EV kit ●● 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. 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 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  where VFB = 0.75V. Output capacitance value changes are required for an output voltage greater than 2V. Refer to the MAX17515 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 Input Supply Voltage The MAX17515 EV kit can operate from a minimum 4.5V single DC power supply at VIN PCB pad with a shunt installed across JU1. The EV kit is also configured to power a lower input voltage at 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 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. 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. www.maximintegrated.com Maxim Integrated │  2 Evaluates: MAX17515, 5A Integrated Power Module MAX17515 Evaluation Kit Typical Operating Characteristics (VCC = 5V, VIN = 3.3V to 5V, VOUT = 0.9V to 3.3V, IOUT = 0–5A, TA = +25°C, unless otherwise noted.) EFFICIENCY vs. OUTPUT CURRENT MAX17515 toc02 MAX17515 toc01 100 VOLTAGE RIPPLE (VIN = 5V, VOUT = 1.5V, IOUT = 5A) VIN = 3.3V 95 EFFICIENCY (%) 90 85 VIN 100mV/div (AC-COUPLED) VOUT 20mV/div (AC-COUPLED) VIN = 5V 80 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) MAX17515 toc04 MAX17515 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) MAX17515 toc05 VEN 5V/div VOUT 1V/div IIN 5A/div IOUT 5A/div 1ms/div www.maximintegrated.com Maxim Integrated │  3 MAX17515 Evaluation Kit Evaluates: MAX17515, 5A Integrated Power Module Figure 1. MAX17515 EV Kit Schematic www.maximintegrated.com Maxim Integrated │  4 Evaluates: MAX17515, 5A Integrated Power Module MAX17515 Evaluation Kit 1.0” Figure 2. MAX17515 EV Kit Component Placement Guide— Component Side 1.0” Figure 3. MAX17515 EV Kit PCB Layout—Component Side 1.0” Figure 4. MAX17515 EV Kit PCB Layout—PGND Layer 2 www.maximintegrated.com Maxim Integrated │  5 Evaluates: MAX17515, 5A Integrated Power Module MAX17515 Evaluation Kit 1.0” Figure 5. MAX17515 EV Kit PCB Layout—PGND Layer 3 1.0” Figure 6. MAX17515 EV Kit PCB Layout—Solder Side 1.0” Figure 7. MAX17515 EV Kit PCB Layout—Bottom Silk Screen www.maximintegrated.com Maxim Integrated │  6 MAX17515 Evaluation Kit Evaluates: MAX17515, 5A Integrated Power Module Ordering Information PART TYPE MAX17515EVKIT# EV Kit #Denotes RoHS compliant. www.maximintegrated.com Maxim Integrated │  7 Evaluates: MAX17515, 5A Integrated Power Module MAX17515 Evaluation Kit Revision History REVISION NUMBER REVISION DATE PAGES CHANGED 0 5/13 Initial release 1 9/13 Various changes including EV kit layout with multiple outputs to compact layout with a single output DESCRIPTION — 1–6 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. © 2013 Maxim Integrated Products, Inc. │  8