Click here for production status of specific part numbers. Evaluates: MAX20414 MAX20414 Evaluation Kit Procedure General Description The EV kit is fully assembled and tested. Follow the steps The MAX20414 evaluation kit (EV kit) is a fully assembled below to verify board operation. Caution: Do not turn on and tested PCB that demonstrates the MAX20414 power- the power supply until all connections are completed. management IC (PMIC). The EV kits include two high- efficiency, low-voltage DC-DC converters. OUT1 boosts 1) Preset the power supply to 3.3V. Turn off the power a 3.3V input to 5V at up to 500mA, while the OUT2 step- supply. down converter provides adjustable output voltages down 2) Preset the electronic load to 500mA. Turn off the to 0.8V at up to 3A. The 2.2MHz switching-frequency electronic load. operation allows for the use of all-ceramic capacitors and 3) Connect the positive lead of the power supply to the minimizes external components. VSUP PCB pad. Connect the negative lead of the power supply to the PGND PCB pad. The EV kit features two on/off jumper controls and two 4) Connect the positive terminal of the electronic load to reset outputs (RESET1, RESET2) to indicate output the VOUT1 PCB pad. Connect the negative terminal status for each converter. It also provides a SYNC input to of the electronic load to the PGND1 PCB pad. select the operating mode (forced-PWM, skip, or external 5) Enable outputs VOUT1 and VOUT2 by installing frequency synchronization). shunts on jumpers EN1 and EN2. 6) Install a shunt on SYNC1 to enable FPWM Features operation. 3V to 5.5V Operating Supply Voltage 7) Turn on the power supply. 5V at 500mA Synchronous Boost Converter (OUT1) 8) Verify that the voltage across the VOUT1 and PGND1 1.25V at 3A Synchronous Buck Converter (OUT2) PCB pads is 5V 1%. 9) Verify that the voltage across the RESET1 and PGND SYNC Mode Select Input for Forced-PWM (FPWM), PCB pads is 3.3V. Skip Mode Selection, or External Frequency 10) Turn on the electronic load. Synchronization 11) Verify that the voltage across the VOUT1 and PGND1 Individual RESET Outputs PCB pads is 5V 2%. Minimized External Components 12) Turn off the electronic load. 13) Remove the electronic load from the VOUT1 and Proven PCB Layout PGND1 PCB pads. Fully Assembled and Tested 14) Connect the positive terminal of the electronic load to the VOUT2 PCB pad. Connect the negative terminal of the electronic load to the PGND2 PCB pad. Preset Quick Start the electronic load to 3A. Required Equipment 15) Verify that the voltage across the VOUT2 and PGND2 MAX20414 EV kit PCB pads is 1.25V 2%. 16) Verify that the voltage across the RESET2 and PGND Variable 6V power supply capable of PCB pads is 3.3V. supplying 5A 17) Turn on the electronic load. Two voltmeters 18) Verify that the voltage across the VOUT2 and PGND2 Electronic load PCB pads is 1.25V 3%. 19) Turn off the electronic load. 20) Turn off the power supply. Ordering Information appears at end of data sheet. 319-100023 Rev 0 5/18Evaluates: MAX20414 MAX20414 Evaluation Kit Reset Outputs (RESET1 and RESET2) Detailed Description The EV kit also includes two RESET outputs to monitor The MAX20414 EV kit integrates two high-efficiency, low- V and V output status. The RESET output voltage DC-DC converters. OUT1 is a synchronous boost OUT1 OUT2 becomes high impedance and is pulled to the VSUP converter that boosts a 3.3V input to 5V at up to 500mA, voltage when the corresponding output voltage is within while the OUT2 synchronous step-down converter pro- the specified UV/OV range. RESET goes low when the vides adjustable output voltages down to 0.8V at up to 3A. corresponding output voltage is not within the specified V and V can be enabled/disabled by the EN1 OUT1 OUT2 UV/OV range. and EN2 jumpers, respectively. The status of input volt- age and output voltages can be indicated by RESET1 Table 1. Operation Mode (SYNC1) and RESET2. SHUNT POSITION MODE Adjustable Buck Output Voltage (V ) OUT2 On Forced PWM The buck output voltage (V ) can be adjusted using OUT2 the following procedure: Off Skip 1) Choose R to be 100k or less. BOTTOM Off (an external clock connected to the SYNC Synchronize to external clock 2) Solve for R using: TOP PCB pad) R = R x (V /0.8V) - 1 TOP BOTTOM OUT 3) Install resistors R and R . R TOP BOTTOM TOP refers to R2, while R refers to R3 in BOTTOM Table 2. Enable Control (EN1, and EN2) the EV kit schematic. SHUNT POSITION MODE Operation Mode The EV kit features a jumper (SYNC1) to configure On Normal Operation the ICs operation mode. Install a shunt on SYNC1 to Off Shutdown enter FPWM mode. Remove the shunt on SYNC1 to enable skip mode under light-load conditions. Connect an external clock with a 1.8MHz to 2.6MHz frequency to Ordering Information synchronize the internal oscillator to an external clock. Table 1 summarizes the functions of SYNC1. PART TYPE MAX20414EVKIT EV Kit Enable Control Denotes RoHS compliant. The EN1, and EN2 jumpers are used to enable or disable V , and V , respectively. Install shunts on EN1, OUT1 OUT2 or EN2 to enable V or V normal operation. OUT1 OUT2 Remove the shunts on EN1 or EN2 to enter shutdown mode. See Table 2 for enable control Maxim Integrated 2 www.maximintegrated.com