Evaluates: MAX17561, MAX17562, and MAX17561 Evaluation Kit MAX17563Highly Integrated, Adjustable Overcurrent and Overvoltage Protection Solutions General Description Quick Start The MAX17561 evaluation kit (EV kit) is a fully assem- Required Equipment bled and tested circuit board that demonstrates the MAX17561 EV kit MAX17561 adjustable overvoltage and overcurrent 36V DC power supply protector in a 14-pin TSSOP surface-mount package with an exposed pad. The EV kit features TVS diode on input, Multimeter schottky diode on output and jumper-configurable SETI USB type-A to USB type-B cable or 5V DC power resistors for setting different current limits. Input power to supply the EV kit uses a 4.5V to 36V input supply. Procedure The EV kit can also be used to evaluate MAX17562 and The EV kit is fully assembled and tested. Perform the MAX17563 devices by replacing the appropriate IC (U1). following steps to verify board operation. Caution: Do Request free samples from the factory when ordering the not turn on the power supply until all connections are EV kit. completed. Features 1) Verify that all jumpers are in their default positions. 4.5V to 36V Operating Voltage Range 2) Connect the USB cable to J1 from a computer or connect a 5V DC power supply to TP3. Features TVS Diode and Schottky Diode 3) Verify that LED1 is on. Jumper-Configurable Current Limit 4) Connect a 20V DC power supply to IN. Verify that Proven PCB Layout OUT is 20V. 5) Gradually increase the DC power supply voltage and Fully Assembled and Tested verify that OUT voltage goes down and LED2 is ON when input reached approximately 33V. Ordering Information appears at end of data sheet. 6) Gradually decrease voltage on the DC power supply and verify that OUT comes back and LED2 is OFF when the input reaches approximately 32V. 319-100033 Rev 0 6/17Evaluates: MAX17561, MAX17562, and MAX17561 Evaluation Kit MAX17563Highly Integrated, Adjustable Overcurrent and Overvoltage Protection Solutions Use the following equation to set the OVLO threshold: Detailed Description of Hardware The MAX17561 EV kit is a fully assembled and tested R11 circuit board that demonstrates the MAX17561 adjustable V V x1 + OVLO BG overvoltage and overcurrent protector in a 14-pin TSSOP- R12 EP surface-mount package. where: The jumper configurations by default are configured to R11 is 2.2M test internal UVLO and internal OVLO thresholds. There are jumpers that can be configured and resistor pads V is 1.21V BG to test user-defined UVLO and OVLO thresholds. The External LED2 indicates that an OVLO fault has occurred. overcurrent threshold is determined by external resistors connected to the SETI pin and is jumper configurable Undervoltage Lockout (UVLO) through jumper JU1. The EV kit also features an LED to Jumper JU3 (shunted by default) connects the UVLO pin indicate the power for logic pins. to GND and configures the device to have the internal 19.2V preset UVLO. To configure a user-defined UVLO, External Power Supply disconnect JU3 and connect a shunt on JU5. This allows The EV kit is powered by a user-supplied 4.5V to 36V DC the device to monitor the IN voltage. Connect a resistor power supply connected between BP1 (INPUT POWER) on R10 to set the user-defined UVLO threshold. Use the and GND. following equation to set the UVLO threshold: Current Limit Threshold R9 V V x1 + The EV kit features a jumper (JU1) to select current-limit UVLO BG R10 threshold. Install a jumper as shown in Table 2 to change the current-limit threshold. where: Use the following equation to calculate the current limit: R9 is 2.2M V is 1.21V 11500 BG R (k=) (mA) SETI I LIM Enable (J1) To enable the device, connect a USB connector from the Overvoltage Lockout (OVLO) computer to the USB connector, J1. This provides 5V to Jumper JU4 (shunted by default) connects the OVLO pin VBUS and to the EN pin (JU8 connects VBUS to IN by to GND and configures the device to have the internal default). If no cable is available, connect a 5V DC power 33V preset OVLO. To configure a user-defined OVLO, supply between test point TP3 and the corresponding disconnect JU4 and connect a shunt on jumper JU5. This GND test point, TP4. allows the device to monitor the IN voltage. Connect a resistor on R12 to set the user-defined OVLO threshold. Negative Input Test When applying a negative input to V , the negative input IN test should be performed when the output capacitors are fully discharged and VBUS should not be supplied. Maxim Integrated 2 www.maximintegrated.com = =