Evaluate: MAX15093/MAX15093A MAX15093/MAX15093A Evaluation Kits General Description Quick Start The MAX15093/MAX15093A evaluation kits (EV kits) Required Equipment provide a proven design to evaluate the MAX15093/ MAX15093 or MAX15093A EV kit MAX15093A hot-swap controllers with an integrated 15A 12V, 15A DC power supply MOSFET. The EV kits are configured to pass 15A in a 2.7V to 18V hot-swap application, thus providing a fully Voltmeter integrated solution. The EV kits use the MAX15093GWL+/ Procedure MAX15093AGWL+T in a 2.57mm x 4.03mm, 40-bump, The EV kits are fully assembled and tested. Follow the 0.5mm pitch wafer-level package (WLP) with a proven steps below to verify board operation. Caution: Do not four-layer PCB design. As configured, the EV kits are turn on the power supply until all connections are optimized to operate at 12V. completed. The two EV kit versions (MAX15093AEVKIT and 1) Verify that a shunt is installed across pins 1-2 on the MAX15093EVKIT ) are built on the same PCB fabrication following jumpers: J1, J3, J4, J5, UV IN, and CB. and can be used interchangeably to evaluate either the MAX15093 or MAX15093A by replacing U1 with the 2) Turn on the power supply and set the supply to 12V, desired device. then disable the power supply. 3) Connect the positive terminal of the power supply Features to the IN banana jack on the EV kits. Connect the 2.7V to 18V Operating-Voltage Range negative terminal of the power supply to the GND Up to 15A Configurable Load-Current Capability banana jack. Banana Jacks for Input and Output Voltage 4) Enable the power supply. Programmable Slew-Rate Control 5) Verify that the voltage between the OUT and GND banana jacks is 12V. Selectable/Configurable Circuit-Breaker Threshold 6) Verify that the internal regulator voltage (REG) is 3.3V. Configurable Overvoltage/Undervoltage Lockout 7) The EV kits are now ready for additional evaluation. Programmable Timeout Delay FAULT and PG Outputs Defined Safe Operation Area Proven PCB Layout Ordering Information appears at end of data sheet. Fully Assembled and Tested 19-8764 Rev 1 7/19Evaluate: MAX15093/MAX15093A MAX15093/MAX15093A Evaluation Kits OUT, U2 pulls the TIMEOUT pin low. The EV kit is configured Detailed Description of Hardware to have TIMEOUT pulled low after ~22ms. The MAX15093 EV kit provides a proven design to Jumper TIMEOUT is also provided to bypass the timeout evaluate the MAX15093. The MAX15093 EV kit can be conveniently connected between the system power and delay and force TIMEOUT low, if installed. See Table 2 for TIMEOUT settings. the load using the banana jacks provided for the input and output. PCB pads are provided to monitor and control the Setting the Output Slew Rate device signals. The MAX15093 EV kit operates between An external capacitor (C3) is connected from GATE to 2.7V and 18V up to 15A load current capability. GND on the IC to reduce the output slew rate during startup. During startup, a 5.7A (typ) current is sourced to Evaluating the MAX15093 or MAX15093A enhance the internal MOSFET with 28V/ms (typ). C3 can The MAX15093 EV kit can be used to evaluate the be calculated according to the following formula: MAX15093A with the MAX15093AGWL+T installed, while the MAX15093A EV kit can be used to evaluate the C3 = I (t /V ) GATE ON OUT MAX15093 with the MAX15093GWL+ installed. The where I is 5.7A (typ), t is the desired output GATE ON MAX15093A is pin-to-pin compatible with the MAX15093. ramp-up time, and V is assumed to start from zero. OUT Refer to the MAX15093/MAX15093A IC data sheet for Undervoltage Lockout details on the MAX15093A. The EV kit provides an option to configure the undervoltage- Circuit Breaker (CB) lockout threshold. The undervoltage-lockout threshold for Jumper CB sets the current limit for the internal circuit the device is configured by the IN voltage level divided by breaker (CB) of the device. The CB pin can be connected R1 and (R2 + R3) at the UV pin. By default, the to a fixed resistor (R5) or a potentiometer (R11) to set the undervoltage-lockout threshold is set to 10.8V. The EV kit current limit. See Table 1 for shunt positions. also provides an option to externally provide a UV threshold. Remove the jumper for UV IN, then connect a power The circuit-breaker threshold can be set according to the supply with the desired voltage to the UV pin. Remove R2 following formula: to make UV independent from OV. I = R /2227 - 1.05 CB CB Overvoltage Lockout where I is in A and R (the resistor between CB and CB CB The EV kits provide an option to configure the overvolt- ground) is in . age-lockout threshold. The overvoltage-lockout thresh- old for the device is configured by the IN voltage level Setting Timeout Delay for TIMEOUT (CDLY) divided by (R1 + R2) and R3 at the OV pin. By default, the Capacitor C4 is used to set the timeout delay for overvoltage-lockout threshold is set to 14V. The EV kit TIMEOUT to go low to prevent internal MOSFET shut- also provides an option to externally provide an OV down after power-up. This is set at a rate of 1s/F. The EV threshold. Remove the jumper for UV IN, then connect kit is configured for a 47ms timeout delay. a power supply with the desired voltage to the OV pin. Delayed TIMEOUT Remove R2 to make OV independent from UV. The ICs TIMEOUT pin must be pulled low before the Current-Sense Output (ISENSE) timeout delay set by capacitor C4 elapses. The EV kit The ICs ISENSE pin is the output of an accurate provides a simple timer circuit comprised of U2, R7, and current-sense amplifier and provides a source current C5 to pull the TIMEOUT pin low before the timeout delay. proportional to the load current flowing into the main Once PG asserts as open-drain, R7 begins to charge C5 switch. The factory-trimmed current ratio is set to 157A/A. to the output voltage (OUT). When C5 charges to 2/3 x On the EV kit, this allows producing a scaled voltage by routing resistor R6 from ISENSE to GND. Table 1. CB Jumper Selection SHUNT CB PIN CURRENT LIMIT POSITION CONNECTED TO 1-2* R5 16.5A 2-3 R11 Adjustable *Default position. Maxim Integrated 2 www.maximintegrated.com