MAXM17516EVKIT#

Evaluates: MAXM17516, MAXM17516 Evaluation Kit 6A Integrated Power Module General Description Features The MAXM17516 evaluation kit (EV kit) is a fully assem- High-Integration Solution/Integrated Shielded Inductor bled and tested PCB that demonstrates the typical 6A 2.4V to 5.5V Input Range application circuit of the MAXM17516. The MAXM17516 Configured for 1.5V Output Voltage is a fixed-frequency, integrated inductor, step-down power Adjustable Output-Voltage Range (0.75V to 1.8V) module for low-voltage, low-power applications. 6A Output Current The EV kit provides a 1.5V output voltage from a 2.4V 90.6% Efficiency (V = 3.3V, V = 1.5V at 1.79A) IN OUT to 5.5V input range and delivers up to 6A output current while achieving greater than 90.6% efficiency. The EV kit 1MHz Switching Frequency operates at 1MHz switching frequency and has superior Enable Input line and load-transient response. The EV kit also allows Power-Good Output Indicator (POK) the evaluation of other adjustable output voltages from Low-Profile, Surface-Mount Components 0.75V to 1.8V by changing resistors R1 and R2. Proven PCB Layout Ordering Information appears at end of data sheet. Fully Assembled and Tested 19-7611 Rev 0 4/15Evaluates: MAXM17516, MAXM17516 Evaluation Kit 6A Integrated Power Module Switching Frequency (FREQ) Quick Start The EV kit features a PWM-mode switching frequency. Recommended Equipment The switching frequency is fixed at 1MHz. MAXM17516 EV kit Programming the Output Voltage 2.4V to 5.5V DC power supply (V ) IN The EV kit includes a default output programmed at 1.5V 5V DC power supply (V ) CC and also produces an adjustable 0.75V to 1.8V output Dummy load capable of sinking 6A voltage by connecting FB to a resistive divider. To obtain an output voltage other than the default programmed Digital multimeter (DMM) output, modify the R1 and R2 resistors with values 100MHz dual-trace oscilloscope according to the following equation: Procedure R1 The EV kit is fully assembled and tested. Follow the steps V V1 + OUT FB R2 below to verify board operation. Caution: Do not turn on the power supply until all connections are completed. where V = 0.765V. Changes to output capacitance FB 1) Ensure that the circuit is correctly connected to the selection are required for either an output voltage greater supplies and dummy load prior to applying any power. than 2V or a capacitor temperature rise above 105C. 2) Verify that a shunt is installed across jumper JU1. Refer to the MAXM17516 IC data sheet for output capaci- tance selection. 3) Enable the power supply (V = 5V). IN 4) Observe the 1.5V output with the DMM and/or Table 1. Jumper JU1 Functions oscilloscope. Look at the EP2 switching node while varying the load current. SHUNT (JU1) REGULATOR V /V RANGE IN CC POSITION OUTPUT Detailed Description of Hardware V = 4.5V to 5.5V IN Installed Enabled Input Supply Voltage V = V CC IN The EV kit can operate from a minimum 4.5V single DC V = 2.4V to 5.5V IN power supply at the VIN PCB pad with a shunt installed Installed Require an additional Enabled across JU1. The EV kit is also configured to power a V = 4.5V to 5.5V CC lower input voltage at the V PCB pad, which requires an IN V = 2.4V to 5.5V additional 5V power supply at the V PCB pad, a capacitor IN CC Not installed* Disabled V = V CC (C4) to be installed, and a connecting trace between V IN IN and V (next to R3s footprint) to be cut. Table 1 lists CC *The thin trace connecting V and V (next to R3s footprint) IN CC all operating configurations of the EV kit at different input- must be cut before applying the additional power supply to the voltage sources. The electrolytic capacitor (C1) is required V PCB pad. CC only when the V power supply is situated far from device IN circuit. On the bottom layer, additional footprints of optional components are included to ease 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. Maxim Integrated 2 www.maximintegrated.com =