Evaluates: MAX17523 MAX17523 Evaluation Kit General Description The MAX17523 evaluation kit (EV kit) is a fully assembled and tested circuit board that demonstrates the MAX17523 adjustable overcurrent and overvoltage protector. The EV kit features TVS diode on input and Schottky diode on output. Input power to the EV kit uses a 4.5V to 36V input supply. The EV kit circuit can be configured to demonstrate the device’s different current-limit types, adjustable overvoltage, undervoltage, and current-limit threshold. Features Quick Start Required Equipment ● MAX17523 EV kit ● 36V DC power supply ● Multimeter ● USB-A male to USB-B male cable or 5V DC power supply Procedure The EV kit is fully assembled and tested. Follow the steps below to verify board operation: ● 4.5V to 36V Operating Voltage Range 1) Verify that all jumpers are in their default positions. ● Features TVS Diode and Schottky Diode 2) ● Evaluates Three Current-Limit Types, Current-Limit Threshold, OVLO, and UVLO Connect the USB cable to J1 from a computer or connect a 5V DC power supply to TP3. 3) Verify that LED1 is on. ● Proven PCB Layout 4) Connect a 20V DC power supply to IN. Verify that OUT is 20V. 5) Increase voltage on the DC power supply and verify that the OUT voltage goes down and FLAG goes low when input reaches approximately 33V. 6) Decrease voltage on the DC power supply and verify that OUT goes back and FLAG goes high when the input reaches approximately 32V. ● Fully Assembled and Tested Ordering Information appears at end of data sheet. 19-8511; Rev 0; 12/16 Evaluates: MAX17523 MAX17523 Evaluation Kit Detailed Description of Hardware The MAX17523 EV kit is a fully assembled and tested circuit board that demonstrates the MAX17523 1A adjustable overcurrent and overvoltage protector IC in a 16-pin surface-mount TQFN-EP package. Using jumper JU1, the EV kit circuit can be configured to evaluate different current-limit thresholds with a different resistor on SETI. Using jumpers JU3–JU5, the EV kit circuit can be configured to evaluate the internal OVLO/UVLO threshold or external threshold using a resistor-divider. Using jumpers JU14 and JU15, the EV kit circuit can be configured to evaluate different current-limit types (autoretry, latchoff, and continuous). The EV kit also features an LED to indicate the power for logic pins. Table 1. LED Indicator LED LED1 Current-Limit Threshold The EV kit features a jumper (JU1) to select current-limit threshold. Install a jumper as shown in Table 2 to change the current-limit threshold. Use the following equation to calculate the current limit: 6100 R SETI ( kΩ ) = ILIM (mA) UVLO/OVLO Threshold Use jumpers JU3–JU5 to select UVLO and OVLO threshold. See Table 3 for jumper settings. Switch Control The EV kit features two jumpers (JU6, JU8) to enable or disable the switch. See Table 4 for jumper settings and Table 5 for switch status. Table 2. Current-Limit Threshold (JU1) NAME DESCRIPTION POWER LED1 is on when the VBUS/5V supply for the logic pins is powered JUMPER SHUNT POSITION JU1 DESCRIPTION 1-2* Current limit 0.15A 3-4 Current limit 0.5A 5-6 Current limit 0.98A 7-8 Current limit adjustable *Default position. Table 3. UVLO/OVLO Threshold (JU3–JU5) JUMPER SHUNT POSITION JU3 JU4 JU5 Installed* DESCRIPTION UVLO connected to ground. Internal UVLO threshold is selected. Not installed Installed* UVLO not connected to ground. Install JU5 to use external resistors to set UVLO threshold. OVLO connected to ground. Internal OVLO threshold is selected. Not installed Installed OVLO not connected to ground. Install JU5 to use external resistors to set OVLO threshold. Use external resistors to set the OVLO/UVLO threshold. Not installed* Not using external resistors to set the OVLO/UVLO threshold. *Default position. Table 4. Switch Control (JU6, JU8) JUMPER JU6 JU8 SHUNT POSITION DESCRIPTION 1-2 HVEN connected to IN through 100kΩ. 2-3* HVEN connected to ground. Installed* EN connected to VBUS. Not installed EN connected to ground through 100kΩ. Table 5. Enable Inputs HVEN EN SWITCH STATUS 0 0 On 0 1 On 1 0 Off 1 1 On *Default position. www.maximintegrated.com Maxim Integrated │ 2 Evaluates: MAX17523 MAX17523 Evaluation Kit Reverse-Current Block Enable Use jumper JU9 to enable or disable the reverse-current flow protection. The reverse-current block is enabled when RIEN is logic-low. See Table 6 for jumper settings. Output Load Capacitor Use jumper JU13 to connect output to 330µF capacitor. See Table 9 for jumper settings. Current-Limit Type Select The EV kit features jumpers JU12, JU14, JU15 to select different current-limit type and sampled time. See Table 7 for jumper settings. Table 6. Reverse-Current Block Enable (JU9) JUMPER SHUNT POSITION JU9 DESCRIPTION Installed RIEN connected to VBUS. Not installed* RIEN connected to ground through 100kΩ. Table 8. Logic Inputs CLTS2 CLTS1 CURRENT-LIMIT TYPE 0 0 Latchoff 0 1 Autoretry 1 0 Continuous 1 1 Continuous *Default position. Table 7. Current-Limit Type Select (JU12, JU14, JU15) JUMPER SHUNT POSITION 1-2* CLTS_MODE high. CLTS1 and CLTS2 are sampled continuously. 2-3 CLTS_MODE low. CLTS1 and CLTS2 are sampled only when VIN - VOUT < 0.6V. 1-2* CLTS1 high. 2-3 CLTS1 low. 1-2 CLTS2 high. 2-3* CLTS2 low. JU12 JU14 JU15 DESCRIPTION Table 9. Output Load Capacitor (JU13) JUMPER SHUNT POSITION DESCRIPTION Installed OUT connected to C7 and C8. Not installed* OUT not connected to C7 and C8. JU13 *Default position. *Default position. www.maximintegrated.com Maxim Integrated │ 3 Evaluates: MAX17523 MAX17523 Evaluation Kit Component Suppliers SUPPLIER WEBSITE Bourns, Inc. www.bourns.com Fairchild Semiconductor www.fairchildsemi.com FCI Electronics Interconnection Solutions www.fciconnect.com Lite-On, Inc. www.us.liteon.com Lumex Inc. www.lumex.com Murata Americas www.murata.com Panasonic Corp. www.panasonic.com Phoenix Contact, Inc. www.phoenixcontact.com STMicroelectronics www.us.st.com TDK Corp. www.component.tdk.com Note: Indicate that you are using the MAX17523EV when contacting these component suppliers. Component Information, PCB Layout, and Schematic Ordering Information ● MAX17523 EV BOM #Denotes RoHS compliant. See the following links for component information, PCB layout diagrams, and schematic. PART TYPE MAX17523EVKIT# EV Kit ● MAX17523 EV PCB Layout ● MAX17523 EV Schematics www.maximintegrated.com Maxim Integrated │ 4 Evaluates: MAX17523 MAX17523 Evaluation Kit Revision History REVISION NUMBER REVISION DATE 0 12/16 DESCRIPTION Initial release PAGES CHANGED — For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com. Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. © 2016 Maxim Integrated Products, Inc. │ 5 TITLE: Bill of Materials ‐ Revision 12/16 DESIGN: max17523_evkit_a Part Reference C1 C3 C4 C7 D1 D2, D3 J1 J2, J3 JU1 JU3‐JU5, JU8, JU9, JU13 JU6, JU12, JU14, JU15 LED1 R1 R2 R6 R7 R8 R9, R11 R13, R14, R17 R15 R16 R18 TP1 TP2, TP4, TP5, TP7 TP3, TP6, TP8 TP9 TP10 TP11 U1 C8 R10, R12 PCB Qty 1 1 1 1 1 2 1 2 1 6 4 1 1 1 1 1 1 2 3 1 1 1 1 4 3 1 1 1 1 0 0 1 Description CAPACITOR CER 1UF 25V ±10% X5R 0603 CAPACITOR CER 0.47UF 50V ±10% X5R 0603 CAPACITOR CER 1UF 50V ±10% X7R 1206 CAPACITOR RADIAL 330UF 50V ±20% DIODE TVS 12A 36V DIODE 1A 60V USB B‐TYPE CONNECTOR Power Terminals CONN HEADER 8PINS CONN HEADER 2PINS CONN HEADER 3PINS LED GREEN 1206 RES 1K 1% 0805 SMD RES 10K 1% 0805 SMD RES 40.2K 1% 0805 SMD RES 12.1K 1% 0805 SMD RES 6.2K 1% 0805 SMD RES 2.2M 5% 0805 SMD RES 100K 1% 0805 SMD RES 4.7K 1% 0805 SMD RES TRIMMER POTENTIOMETER 50K OHM RES 10 1% 0402 SMD WHITE TEST POINT BLACK TEST POINT RED TEST POINT PURPLE TEST POINT GREEN TEST POINT GREY TEST POINT IC OVERCURRENT OVERVOLTAGE PROTECTOR (MAX17523ATE+) CAP RADIAL 330UF 50V ±20% RES 1.47K 1% 0805 SMD PCB: EPCB17523 SILKSCREEN TOP TOP BOTTOM 1 1 2 IN 2 IN CLTS_MODE OUT OUTPUT POWER JU13 2 + 1 2 D2 STPS1L60A 1 1 DG128-5.0-02P-14 C8 R13 100K 2 IN1 CLHS RIEN TP9 1 2 3 4 6 CLTS1 CLTS_MODE RIEN 16 OUT2 15 VIN 2 C3 R9 2.2M DNI R10 R11 2.2M DNI R12 7 IN2 8 OVLO UVLO JU4 2 SETI GND 1 100K C4 1UF GND OUT1 14 EN 13 EP FLAG R17 100K TP10 EN JU8 VBUS 1 R18 10 2 TP7 R14 2 0.47UF VBUS JU9 VOUT U1 MAX17523 17 1 12 JU5 11 TP5 HVEN 1 3 GND VIN 5 CLTS2 10 2 JU6 HVEN TP11 1 36V 9 D1 DG128-5.0-02P-14 J3 DNI C7 330UF J2 TP8 C CLTS_MODE IN CLTS1 IN VIN CLTS2 INPUT POWER IN IN TP6 A CLHS IN VOUT + CLTS1 JU12 3 2 JU14 3 IN JU15 3 CLTS2 IN 1 CLHS 1 VBUS C1 R6 40.2K 2 R8 6.2K GND R15 4.7K TP2 MTHOLE X2 MTHOLE X3 MTHOLE X4 1 1 12.1K 2 3 POWER R7 R16 50K 3 LED1 MTHOLE X1 1 1 3 5 7 1UF FLAG TP1 1 1 3 5 7 JU1 1 1K TP4 5 6 GND S1 S2 R1 B160-13-F A GND 10K 1 D+ C R2 2 4 6 8 D- 1 2 3 4 D3 JU3 2 4 6 8 VBUS VBUS TP3 2 5V J1 61729-0010BLF