MAX14900E Evaluation Kit Evaluates: MAX14900E General Description Features The MAX14900E octal high-speed, industrial, high-side Stand-Alone Operation in Parallel Mode switch evaluation kit (EV kit) is a fully assembled and SPI-Controlled for Serial Mode/Monitored-Parallel tested surface-mount printed circuit board (PCB) that Mode demonstrates the capabilities of the MAX14900E IC to Built-In 5V Regulator drive industrial-grade signals. Surge-Compliance Clamp Diodes Included This EV kit demonstrates operation in all MAX14900E Fully Assembled and Tested modes. In parallel mode, jumpers allow for arbitrary configuration. In serial mode, or parallel mode with serial monitoring, attach a control circuit to the appropriate test points, as detailed below. Ordering Information appears at end of data sheet. MAX14900E EV Kit PCB Photo 19-7641 Rev 0 5/15MAX14900E Evaluation Kit Evaluates: MAX14900E 19) Observe the output waveform on the oscilloscope. Quick Start Recommended Equipment Detailed Description MAX14900E EV kit The MAX14900E octal, high-speed, industrial, high-side 24V, 2A power supply switch EV kit is a fully assembled and tested, surface- mount PCB that demonstrates the capabilities of the Function generator MAX14900E IC to drive industrial-grade signals. Oscilloscope This EV kit demonstrates operation in all MAX14900E 50, 15W (minimum) load resistor modes. In parallel mode, jumpers allow for arbitrary 5k resistor configuration. In serial mode, or in parallel mode with serial monitoring, attach a control circuit to the appropriate Voltmeter test points. The EV kit operates from a single 24V Bench tie clips with spring clips on both ends (11V to 36V) main supply, and an optional logic supply. Through parallel or serial control, the IC switches the Procedure 24V supply to any combination of eight independent The EV kit is fully assembled and tested. Follow the steps outputs. Besides the device itself, there are plenty of below to verify board operation: attach points, as well as numerous jumpers. The EV kit 1) Preset the 24V power supply to 24V and disable the has little added circuitry. power supply. TVS diode D18 protects the device from surges that may 2) Connect the ground of the 24V power supply to appear on the supply line through the clamp diodes. jumper J2. Note that D18 will likely be destroyed if the user applies 3) Connect the positive supply of the 24V power supply a voltage greater than 36V on the 24V supply. Sixteen to J1. silicon diodes (D2D17) protect the individual MAX14900E power outputs from severe inductive kickback events, 4) Ensure that the shunt for J15 (EN) is installed. as well as surges. A linear regulator, MAX5084 (U2), 5) Ensure that the shunt for J16 (connect V to 5V) is L provides an optional default 5V in case the user does installed. not wish to provide a logic-level supply externally. LED1 6) Ensure that J22 (PUSHPL) is installed. (FAULT) can be optionally configured to light whenever the device indicates a fault condition on its FAULT pin. 7) Ensure that all other shunts are not installed. LED2 (CERR) can be optionally configured to light when 8) Preset the function generator to pulse, 20ms pulse the device detects a CRC error in serial mode. width, 500ms repetition rate, low-voltage 0V, high- voltage 5V, and disable the pulse generator. Input Power Supply 9) Connect a 5k resistor between O1 (TP11) and The EV kit obtains its primary power from a bench supply GND (TP12). whose positive voltage attaches to J1 (24V), and whose return voltage attaches to J2 (GND). This supplies power 10) Connect an oscilloscope between O1 (TP11) and only to the MAX14900E. GND (TP12). 11) Connect the function generator between IIN1 (TP1) 5V Power Supply and GND (TP10). The device requires a 5V supply on pin 30 (V5), supplied by the 5V linear regulator (U2) for the users convenience. 12) Enable the 24V power supply. 13) Enable the function generator. Logic Power Supply 14) Observe the output waveform on the oscilloscope. Most of the devices digital pins have their input thresh- olds and their output drive levels defined by the voltage 15) Disable the function generator. on pin 13 (V ). This V supply can come from two places. L L 16) Change the resistor from 5k to 50. First, the built-in 5V regulator can supply V by attaching L 17) Remove the shunt on J22 (PUSHPL). a shunt to J16 (connect V to 5V), ensuring that no shunt L is attached to J3 (V ). When attaching external circuitry 18) Enable the function generator. L Maxim Integrated 2 www.maximintegrated.com