Click here for production status of specific part numbers. MAX17613AEVKIT Evaluates: MAX17613A - 4.5V to 60V, Evaluation Kit 3A Current-Limiter with OV, UV and Reverse Protection General Description Quick Start The MAX17613AEVKIT evaluation kit (EV kit) is a fully Recommended Equipment assembled and tested circuit board that demonstrates MAX17613AEVKIT the MAX17613A 4.5V to 60V, 3A, overvoltage (OV), 60V, 5A DC power supply undervoltage (UV) protector with forward current limit and reverse current block in a 20-pin TQFN-EP package. 4 Multimeters The EV kit can be configured to demonstrate adjust- Adjustable load (0A to 3.5A) able overvoltage, undervoltage, three current-limit types USB-A male to USB-B male cable or 5V DC (Autoretry, Continuous, and Latchoff) with different current- power supply limit thresholds (from 0.15A to 3A). For more details about the IC benefits and features, refer to the MAX17613 IC Equipment Setup and Test Procedure data sheet. The EV kit is fully assembled and tested. Follow the steps below to verify board operation: Features Caution: Do not turn on power supply until all connec- 4.5V to 40V Operating Voltage Range (Remove the tions are complete. TVS Diode to Extend the Operating Voltage Range up to 60V) 1) Verify that all jumpers are in their default positions. Features a 40V TVS Diode (D1) across the Input and 2) Connect the USB cable to J1 from a computer or con- Schottky Diode across the Output Terminals nect a 5V DC power supply to TP3. Evaluates Undervoltage-Lockout (UVLO), 3) Verify that LED1 is on. Overvoltage-Lockout (OVLO), Three Current Limit 4) Verify the JU6 jumper is installed. Types, and Current-Limit Threshold 5) Set the 60V DC power supply to 5V and connect to IN UVLO Programmed to 4.5V (J2). Verify that OUT (J3/TP8) is 5V. OVLO Programmed to 36V Jumper-Configurable Current Limit Jumper-Configurable Current Limit Type Programmable Startup Blanking Time Features Fault Indication Signals (UVOV, FLAG) Proven PCB Layout Fully Assembled and Tested Ordering Information appears at end of data sheet. 319-100349 Rev 0 4/19MAX17613AEVKIT Evaluates: MAX17613A - 4.5V to 60V, Evaluation Kit 3A Current-Limiter with OV, UV and Reverse Protection 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 at LIM SETI reaches approximately 34.8V. the SETI pin. Use the following equation to calculate the 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 shown 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 cur- by applying negative input voltage (VIN) across input ter- rent limit type responses (see Table 2). For more details minals at J2 only when the output capacitors connected about each current limit type, refer to the MAX17613 IC at the OUT terminals are fully discharged and 5V BUS at data sheet. J1 is not supplied. Detailed Description Table 1. Current-Limit Threshold Jumper The EV kit circuit can be configured to evaluate user- (JU1) Settings defined UVLO and OVLO thresholds using resistor-divid- SHUNT POSITION CURRENT-LIMIT THRESHOLD ers. The overcurrent threshold is determined by external resistors connected to the SETI pin and is configurable 12 Adjustable using the resistor pot 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 and FLAG) and EN. Device offers a programmable startup *Default Position 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 MAX17613A 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