Click here for production status of specific part numbers. MAX17613BEVKIT Evaluates: MAX17613B - 4.5V to 60V, Evaluation Kit 3A, OV, UV Protector with Forward Current Limit General Description Quick Start The MAX17613BEVKIT evaluation kit (EV kit) is a fully Recommended Equipment assembled and tested circuit board that demonstrates MAX17613BEVKIT the MAX17613B 4.5V to 60V, 3A, overvoltage (OV), 60V, 5A DC power supply undervoltage (UV) protector with forward current limit in a 20-pin TQFN-EP package. The EV kit can be configured 4 Multimeters to demonstrate adjustable overvoltage, undervoltage, Adjustable load (0A to 3.5A) three current-limit types (Autoretry, Continuous, Latchoff), USB-A male to USB-B male cable or 5V DC and different current-limit thresholds (from 0.15A to 3A). power supply For more details about the IC benefits and features, refer to the MAX17613 IC data sheet. Equipment Setup and Test Procedure The EV kit is fully assembled and tested. Follow the steps Features below to verify board operation: 4.5V to 40V Operating Voltage Range (Remove the Caution: Do not turn on power supply until all connec- TVS Diode to Extend the Operating Voltage Range tions are completed. up to 60V) 1) Verify that all jumpers are in their default positions. Features a 40V TVS Diode (D1) across the Input and Schottky Diode across the Output Terminals 2) Connect the USB cable to J1 from a computer or connect a 5V-DC power supply to TP3. Evaluates Undervoltage-Lockout (UVLO), Overvoltage-Lockout (OVLO), Three Current-Limit 3) Verify that LED1 is on. Types, and Current-Limit Threshold 4) Verify the JU6 jumper is installed. UVLO Programmed to 4.5V 5) Set the 60V DC power supply to 5V and connect to IN OVLO Programmed to 36V (J2). Verify that OUT (J3/TP8) is 5V. Jumper-Configurable Current-Limit Jumper-Configurable Current-Limit Type Programmable Startup Blanking Time Features Fault Indication Signals (UVOV, FLAG) Ordering Information appears at end of data sheet. Proven PCB Layout Fully Assembled and Tested 319-100348 Rev 0 4/19MAX17613BEVKIT Evaluates: MAX17613B - 4.5V to 60V, Evaluation Kit 3A, OV, UV Protector with Forward Current Limit 6) Gradually increase the DC power-supply voltage to Input Power Supply observe that the device enters lockout mode by verify- The EV kit is powered by a user-supplied 4.5V to 60V ing the OUT voltage (TP8) begins drooping and fault power supply connected between input connector (J2) signal UVOV (TP4) goes low (to approximately 0V) terminals. when input reaches approximately 36V. Setting the Current-Limit Threshold 7) Gradually decrease the DC power-supply voltage to The EV kit features a jumper (JU1) to select the current- observe that the device exits lockout mode by verify- limit threshold. Install a jumper as shown in Table 1 to ing the OUT voltage (TP8) is recovered close to the change the current-limit threshold. The current-limit can input voltage level and the fault signal UVOV (TP4) be programmed between 0.15A to 3A. The current limit goes high (approximately 5V) when the input voltage (I ) is programmed by the resistor R connected LIM SETI reaches approximately 34.8V. at the SETI pin. Use the following equation to calculate 8) Set the DC power-supply voltage to 24V and connect current-limit setting resistor: the adjustable load between OUT and GND terminals and a multimeter in series to measure the current. 4500 R = Gradually increase the load current and verify that the SETI I LIM OUT goes down and FLAG goes low when the load current increases above 0.3A. where, I is the desired current limit in mA and R LIM SETI 9) The jumper JU1 can be configured to change the cur- is in k. rent limit as given in Table 1. Verify various current- Do not use R smaller than 1.5k. SETI limit operations by repeating step 8. Current-Limit Type Selection CAUTION: The negative input test should be performed The EV kit features a jumper (JU4) to select different by applying negative input voltage (VIN) across input ter- current-limit type responses (see Table 2) for jumper set- minals at J2 only when the output capacitors connected tings. For more details about each current-limit type, refer at the OUT terminals are fully discharged and 5V BUS at to the MAX17613 IC data sheet. J1 is not supplied. Detailed Description Table 1. Current-Limit Threshold (JU1) The EV kit circuit can be configured to evaluate user- Settings defined UVLO and OVLO thresholds using resistor-divid- CURRENT-LIMIT THRESHOLD SHUNT POSITION ers. The overcurrent threshold is determined by external 12 Adjustable using the resistor pot resistors connected to the SETI pin and is configurable through jumper JU1. Using jumper JU4, the EV kit circuit 34* 0.3A can be configured to evaluate Autoretry, Continuous, and 56 1.5A Latchoff current-limit types. LED1 on the EV kit indicates 78 3A availability of logic power for annunciation signals (UVOV *Default Position and FLAG) and EN. Devices offer a programmable startup blanking time that enables charging of large capacitances on the output during startup and when recovering from a Table 2. Current-Limit Type Selection fault condition. Connecting a capacitor from the TSTART (JU4) pin to GND programs the startup blanking time. The EV kit can be configured to enable or disable the IC operation SHUNT POSITION CURRENT-LIMIT TYPE using Jumper JU5. The EV kit provides on-board output 12 Latchoff capacitors to enable a demonstration of the MAX17613B 23 Continuous protection features. For more details about the IC benefits Not Installed* Autoretry and features, refer to the MAX17613 IC data sheet. *Default Position Maxim Integrated 2 www.maximintegrated.com