MAX20020EVKIT# Analog Devices

Click here for production status of specific part numbers. Evaluate: MAX20019/MAX20020 MAX20019/MAX20020 Evaluation Kits General Description Quick Start The MAX20019/MAX20020 evaluation kits (EV kits) are Required Equipment fully assembled and tested PCBs that demonstrate the MAX20019 or MAX20020 EV kit MAX20019 and MAX20020 dual step-down converters Variable 25V power supply capable of with integrated high-side and low-side MOSFETs. supplying 2A The EV kits provide a high-efficiency power-conversion Electronic load solution and generate low output voltage from the dual step-down converters: OUT1 steps down up to 16V high Two voltmeters input to 3.3V to provide the power to OUT2, while OUT2 Procedure steps down the OUT1 voltage to 1.8V. The 3.2MHz The EV kits are fully assembled and tested. Follow the switching-frequency operation allows for the use of all- steps below to verify board operation. Caution: Do not ceramic capacitors and minimizes external components. turn on the power supply until all connections are The EV kits feature on/off jumper controls to enable/dis- completed. able OUT1 and OUT2. 1) Preset the power supply to 8V. Turn off the power Features supply. 3.5V to 16V Operating Supply Voltage 2) Preset the electronic load to 300mA. Turn off the electronic load. 5V, 3.3V, 3.0V, and 2.8V Options at 500mA 3) Connect the positive lead of the power supply to the Synchronous Step-Down Converter (OUT1) VSUP PCB pad. Connect the negative lead of the 1.8V, 1.5V, 1.2V, and 1V Options at 500mA power supply to the PGND PCB pad. Synchronous Step-Down Converter (OUT2) 4) Connect the positive terminal of the electronic load to 3.2MHz Operation Minimizes System Solution Size the VOUT2 PCB pad. Connect the negative terminal of the electronic load to the PGND2 PCB pad. Minimized External Components 5) Enable outputs VOUT1 and VOUT2 by installing the Proven PCB Layout shunt on jumper JU1. Fully Assembled and Tested 6) Turn on the power supply. 7) Verify that the voltage across the VOUT1 and PGND1 PCB pads is 3.3V. 8) Verify that the voltage across the VOUT2 and PGND2 PCB pads is 1.8V. 9) Turn on the electronic load. 10) Verify that the voltage across the VOUT1 and PGND1 PCB pads is 3.3V 3%. 11) Verify that the voltage across the VOUT2 and PGND2 Ordering Information appears at end of data sheet. PCB pads is 1.8V 3%. 12) Turn off the electronic load. 13) Turn off the power supply. 19-8691 Rev 1 1/20Evaluate: MAX20019/MAX20020 MAX20019/MAX20020 Evaluation Kits Table 1. Enable Control (JU1) Detailed Description The MAX20019/MAX20020 EV kits integrate dual high- SHUNT POSITION MODE efficiency DC-DC step-down converters. OUT1 steps On Normal Operation down a high input voltage to 3.3V at up to 500mA, while Off Shutdown OUT2 steps down OUT1 voltage to 1.8V. VOUT1 and VOUT2 can be enabled/disabled by JU1 jumper. Ordering Information Enable Control (JU1) PART TYPE The JU1 jumper is used to enable or disable VOUT1 MAX20019EVKIT and VOUT2. Install a shunt on JU1 to enable VOUT1 EV Kit and VOUT2 normal operation. Remove shunts on JU1 MAX20020EVKIT EV Kit to enter shutdown mode. See Table 1 for enable control. Denotes RoHS compliance. Maxim Integrated 2 www.maximintegrated.com