Click here for production status of specific part numbers. Evaluates: MAX20416 MAX20416 Evaluation Kit Procedure General Description The MAX20416 EV kit is fully assembled and tested. The MAX20416 evaluation kit (EV kit) is a fully assembled Follow the steps below to verify board operation. Caution: and tested PCB that demonstrates the MAX20416 Do not turn on the power supply until all connections power-management IC (PMIC). The EV kit includes two are completed. high-efficiency, low-voltage DC-DC synchronous buck converters (OUT1, OUT2) that operate from a 3.0V to 1) Preset the power supply to 3.3V. Turn the power 5.5V input voltage range and provide a 0.8V to 3.8V output supply. voltage range at up to 3A. The 2.2MHz switching-frequency 2) Preset the electronic load to 3A. Turn the electronic operation allows for the use of all-ceramic capacitors and load. minimizes external components. 3) Connect the positive lead of the power supply to the VSUP PCB pad. Connect the negative lead of the The EV kit features two on/off jumper controls and two power supply to the PGND PCB pad. reset outputs to indicate output status for each converter. 4) Connect the positive terminal of the electronic load to The EV kit also provides a SYNC input to select the the VOUT1 PCB pad. Connect the negative terminal operating mode (PWM, skip, or external synchronization). of the electronic load to the PGND1 PCB pad. 5) Enable outputs OUT1 and OUT2 by installing shunts Benefits and Features across jumpers EN1 and EN2. 3.0V to 5.5V Operating Supply Voltage 6) Install a shunt on SYNC1 to enable FPWM operation. 1.25V at 3A Synchronous Buck Converter (OUT1) 7) Turn on the power supply. 8) Verify that voltage across the VOUT1 and PGND1 1.8V at 3A Synchronous Buck Converter (OUT2) PCB pads is 1.25V 2%. Sync-Mode Select, Input for Forced-PWM (FPWM), 9) Verify that voltage across the RESET1 and PGND Skip-Mode Selection, or External Frequency PCB pads is 3.3V. Synchronization 10) Turn on the electronic load. Individual EN Inputs and RESET Outputs 11) Verify that voltage across the VOUT1 and PGND1 Minimized External Components PCB pads is 1.25V 2%. 12) T Proven PCB Layout 13) Remove the electronic load from the VOUT1 and Fully Assembled and Tested PGND1 PCB pads. 14) Connect the positive terminal of the electronic load to the VOUT2 PCB pad. Connect the negative terminal Quick Start of the electronic load to the PGND2 PCB pad. Preset Required Equipment the electronic load to 3A. 15) Verify that voltage across the VOUT2 and PGND2 Variable 6V power supply capable of PCB pads is 1.8V 2%. supplying 5A 16) Verify that voltage across the RESET2 and PGND Two voltmeters PCB pads is 3.3V. Electronic load 17) Turn on the electronic load. 18) Verify that voltage across the VOUT2 and PGND2 PCB pads is 1.8V 3%. 19) T 20) T. Ordering Information appears at end of data sheet. 319-100024 Rev 0 5/17Evaluates: MAX20416 MAX20416 Evaluation Kit Enable Control Inputs (EN1, EN2) Detailed Description The EN1 and EN2 jumpers are used to enable or disable The MAX20416 EV kit integrates two high-efficiency, low- V and V , respectively. Install shunts on EN1, voltage DC-DC converters (OUT1, OUT2) that provide OUT1 OUT2 or EN2 to enable V , or V normal operation. adjustable output voltages from 0.8V to 3.8V at up to 3A. OUT1 OUT2 Remove shunts on EN1 or EN2 to enter shutdown mode. V and V can be enabled/disabled by EN1, and OUT1 OUT2 See Table 2 for enable control EN2 jumpers respectively. The status of input voltage and output voltages can be indicated by RESET1 and Reset Outputs (RESET1, RESET2) RESET2. The EV kits also include two RESET outputs to monitor the V and V output status. The RESET output Adjustable Buck Output Voltage (V and OUT1 OUT2 OUT1 becomes high impedance and is pulled to the VSUP V ) OUT2 voltage when the corresponding output voltage is within The buck outputs (V and V ) can be adjustable OUT1 OUT2 the undervoltage/overvoltage (UV/OV) range. using the following procedure: RESET goes low when the corresponding output voltage 1) Choose R to be 100k or less. BOTTOM is not within the UV/OV range. 2) Solve for R using: TOP R = R x (V /0.8V) - 1 TOP BOTTOM OUT Table 1. Operation Mode (SYNC1) 3) Install resistors R and R . R refers to TOP BOTTOM TOP SHUNT POSITION MODE R4/R6, while R refers to R3/R5 in the EV kit BOTTOM On FPWM schematic. Skip Operation Mode Synchronize to external The EV kit features a jumper (SYNC1) to configure the ICs SYNC1 PCB pad) clock operation mode. Install a shunt on SYNC1 to enter FPWM mode. Remove the shunt on SYNC1 to enable skip mode Table 2. Enable Control (EN1, EN2) under light-load conditions. Connect an external clock with SHUNT POSITION MODE frequency in the range of 1.8MHz to 2.6MHz to synchronize the internal oscillator to an external clock.Table 1 ON Normal Operation summarizes the functions of SYNC1. OFF Shutdown Ordering Information PART TYPE MAX20416EVKIT EV Kit Denotes RoHS compliant. Maxim Integrated 2 www.maximintegrated.com