MAX17292EVKIT#

Evaluates: MAX17292 MAX17292 Evaluation Kit General Description The MAX17292 evaluation kit (EV kit) is a fully assembled and tested PCB that contains a 16W DC-DC boost converter for battery-operated, harsh environment, front-end preboost applications. The MAX17292 integrates a low-side FET driver and current-mode, control-loop circuitry for output-voltage regulation, making it ideal for boost or SEPIC converters. The MAX17292’s integrated driver switches at 2.2MHz. The device can be synchronized with an external clock source within the 1MHz to 2.5MHz range. The EV kit operates from a DC supply voltage of 3V up to 8V. The EV kit can withstand a 16V line transient condition. The EV kit demonstrates the device features, such as dynamic adjustable output voltage, external clock synchronization, two-phase operation configurability, cycle-by-cycle current limit, hiccup mode, and thermal shutdown. The boost converter regulates 8V and can supply a current up to 2A. The EV kit also demonstrates a reference MAX17292 design for battery-operated, harsh environment applications. Quick Start Required Equipment • MAX17292 EV kit • 3V to 8V, 10A DC power supply • Digital voltmeter (DVM) • 2A load Output Testing This EV kit is fully assembled and tested. Follow the steps below to verify board operation. Caution: Do not turn on the power supply until all connections are completed. 1) Verify that a shunt is installed on pins 1-2 of jumper JU1 (device enabled). 2) Verify that a shunt is installed on pins 1-2 (normal mode) or 2-3 (bootstrapped mode) on jumper JU2. 3) Verify that a shunt is installed on jumper JU3 (internal 1V reference). Features 4) Connect the power supply’s positive terminal to the VBAT PCB banana jack and the power supply’s ground to the PGND PCB banana jack. ●● 87% Peak Efficiency at 5V Input 5) Connect the load across the VOUT and PGND banana jacks. ●● 8V up to 2A Output 6) Connect the DVM across VOUT and PGND. ●● Demonstrates External Clock Synchronization 7) Turn on the power supply and set it to 4.5V. ●● Spread Spectrum Optimizes EMI Performance 8) Measure VOUT and verify that it is 8V. ●● 3V Up to 8V Input Voltage Range ●● Demonstrates SUP UVLO ●● Demonstrates Cycle-by-Cycle Current Limit and Hiccup Mode ●● Thermal-Shutdown Protection ●● PGOOD Flag ●● Demonstrates Dynamic Adjustable Output ●● Demonstrates 2.2MHz Single/Two-Phase Operation ●● Compact 1240mil x 1040mil Overall Circuit Footprint Design (0.775 sq. in.) ●● Proven 4-Layer 2oz. PCB Layout and Thermal Design ●● Fully Assembled and Tested 19-8641; Rev 0; 9/16 Ordering Information appears at end of data sheet. Evaluates: MAX17292 MAX17292 Evaluation Kit Detailed Description of Hardware Bootstrap Mode The MAX17292 EV kit is a fully assembled and tested 4-layer PCB that contains a 16W DC-DC boost converter for battery-operated, harsh environment applications, such as front-end, preboost power-suppy applications. The EV kit demonstrates the device’s features, such as the integrated low-side FET driver and current-mode control-loop circuitry for output-voltage regulation. The device’s integrated driver switches at 2.2MHz and can be synchronized with an external clock source within the 1MHz to 2.5MHz range. The EV kit operates from a DC supply voltage of 3V up to 8V. The EV kit can withstand a 16V line transient, that is limited by input capacitor C4 maximum voltage or U1 specific pin 16V rating, which ever is less. The EV kit demonstrates the device features such as dynamic adjustable output voltage, external clock synchronization, single/ two-phase operation configurability, cycle-by-cycle current limit, hiccup mode, and thermal shutdown. The boost converter regulates 8V and can supply a current up to 2A. Enable The EV kit features an enable input and a jumper (JU1) that can be used to enable/disable the device and place it in shutdown mode. The EV kit is enabled whenever power is applied to VBAT and PGND above 4.5V and EN is pulled high. To enable the EV kit from an external enable signal, remove the shunt from JU1 and apply a logic signal on the EN and AGND test points of the EV kit. The enable (EN) input should not be left unconnected (see Table 1 below). Refer to the EN pin description in the MAX17292 IC data sheet for additional information. See Table 1 for EN settings. Table 1. Enable (JU1) For applications where the input voltage goes below 4.5V, use the device in bootstrapped mode by installing a shunt on pins 2-3 of jumper JU2. In bootstrapped configuration, the device is supplied by the output of the boost regulator itself and does not trigger the UVLO, even if the input voltage goes down to 3V. See Table 2 for jumper JU2 settings. Output-Voltage Adjustment The VOUT output voltage can be dynamically adjusted by feeding an analog voltage to the REFIN and AGND test points. The external voltage applied to REFIN is used as the FB reference. Remove the shunt on JU3 to apply an external voltage to REFIN. With the shunt installed on jumper JU3, REFIN is shorted to PVL and an internal 1V FB reference is used for loop regulation. The output voltage can be adjusted in the range of 4V to 16V. See Table 3 for jumper JU3 settings. External Clock Synchronization The MAX17292 IC can be synchronized using an external clock applied to the FSET/SYNC and AGND test points. A falling clock edge on FSET/SYNC turns on the external MOSFET by driving DRV high after a short delay. The MAX17292 can be synchronized with an external clock source within the 1MHz to 2.5MHz range, and a logic-high voltage range of 2.5V to 5V. SHUNT POSITION EN PIN Installed* Connected to VBAT Enabled Connected to AGND Connected to an external controller Disabled External controller enabled SHUNT POSITION SUP PIN EV KIT OPERATION 1-2* Connected to VBAT Normal 2-3 Connected to VOUT Bootstrapped *Default position. Installed Removed EV KIT OPERATION Table 2. Bootstrap Mode (JU2) *Default position. www.maximintegrated.com Maxim Integrated │  2 Evaluates: MAX17292 MAX17292 Evaluation Kit Two-Phase Configuration To configure the EV kit for two-phase operation, use two EV kits and follow the instructions below: Master EV kit: 1) Install a 0603 surface-mount 1kΩ resistor on the R8 pads. Slave EV kit: 1) Remove resistors R2 and R1. 2) Remove capacitors C2, C3, and resistor R5. 3) Install a 0603 surface mount 0Ω resistor on R11 pads. Make the following connections: 1) Connect the PGND banana jack on the master to PGND banana jack on the slave. 2) Connect the AGND test point on the master to AGND test point on the slave. 3) Connect the VBAT banana jack on the master to VBAT banana jack on the slave. 4) Connect the VOUT banana jack on the master to VOUT banana jack on the slave. 5) Connect the COMP PCB pin on the master to COMP pin on the slave through a SMA cable. 6) Connect the SYNCO test point on the master to FSET/SYNC test point on the slave. the the the the the the Table 3. Output Voltage Adjustment (JU3) SHUNT POSITION SUP PIN EV KIT OPERATION 1-2* Connected to VBAT Normal 2-3 Connected to VOUT Bootstrapped *Default position. Component Suppliers SUPPLIER WEBSITE Fairchild Semiconductor www.fairchildsemi.com Kemet www.kemet.com Murata Americas www.murata.com NXP www.nxp.com Panasonic Corp. www.panasonic.com Wurth Electronik GmbH www.we-online.com Note: Indicate that you are using the MAX17292 when contacting these component suppliers. www.maximintegrated.com Maxim Integrated │  3 Evaluates: MAX17292 MAX17292 Evaluation Kit MAX17292 EV Bill of Materials Reference Designators Description Qty AGND 1 TEST POINT; PIN DIA=0.1IN; TOTAL LENGTH=0.3IN; BOARD HOLE=0.04IN; BLACK; PHOSPHOR BRONZE WIRE SILVER PLATE FINISH EN, FB, FSET/ SYNC, PGOOD, PVL, REFIN, SYNCO 7 TEST POINT; PIN DIA=0.1IN; TOTAL LENGTH=0.3IN; BOARD HOLE=0.04IN; RED; PHOSPHOR BRONZE WIRE SILVER PLATE FINISH C1 1 CAPACITOR; SMT; (1210); CERAMIC CHIP; 47UF; 16V; TOL=10%; MODEL=GRM SERIES; TG=-55 DEGC TO +85 DEGC; TC=X5R C2 1 CAPACITOR; SMT; (0603); CERAMIC; 6200pF; 50V; ±5%; C0G, NP0; -55degC to + 125degC. C3 1 CAPACITOR; SMT; (0603); CERAMIC; 150pF; 50V; ±5%; C0G, NP0; -55degC to + 125degC. C4 1 CAPACITOR; SMT; (SMD); ALUMINUM-ELECTROLYTIC; 47UF; 50V; TOL=20% C5, C11 2 CAPACITOR; SMT; (0805); CERAMIC CHIP; 1UF; 50V; TOL=10%; TG=-55 DEGC TO +125 DEGC; TC=X7R C6 1 CAPACITOR; SMT; (0603); CERAMIC CHIP; 2.2UF; 10V; TOL=10%; TG=-55 DEGC TO +125 DEGC; TC=X7R; C12 1 CAPACITOR; SMT; (0402); CERAMIC CHIP; 0.1UF; 16V; TOL=10%; TG=-55 DEGC TO +125 DEGC; TC=X7R; COMP 1 CONNECTOR; FEMALE THREADED; THROUGH HOLE; SMA; STRAIGHT THROUGH; 5PINS D1 1 DIODE; SCH; SMT; (SOT-1289); PIV=45V; IF=15A JU1, JU2 2 CONNECTOR; MALE; THROUGH HOLE; BREAKAWAY; STRAIGHT; 3PINS JU3 1 CONNECTOR; MALE; THROUGH HOLE; BREAKAWAY; STRAIGHT; 2PINS L1 1 0.47uH, 18A inductor (7mm x 6.9mm) N1 1 TRAN; N-CHANNEL POWERTRENCH MOSFET; NCH; SO-8; PD-(2.5W); I-(10A); V-(60V) R1 1 RESISTOR; 0402; 90.9 kOHM; 1%; 100PPM; 0.10W; METAL FILM R2 1 RESISTOR; 0402; 13.0 kOHM; 1%; 100PPM; 0.10W; METAL FILM R3 1 RESISTOR; 1812; 0.022 OHM; 1%; 300PPM; 0.5W; THICK FILM R4 1 RESISTOR; 0402; 1 kOHM; 1% R5 1 RESISTOR; 0402; 6.81 kOHM; 1% R6 1 RESISTOR; 0402; 10 kOHM; 5% R7 1 RESISTOR; 0402; 12.1 kOHM; 1% R9 1 RESISTOR; 0402; 0 OHM; 0%; JUMPER; 0.10W; THICK FILM PGND (2x), VOUT, SUP 4 CONNECTOR; MALE; PANELMOUNT; BANANA JACK; STRAIGHT; 1PIN U1 1 EVKIT PART-IC; MAX17292; PACKAGE OUTLINE: 21-0136; PACKAGE CODE: T1233-4; TQFN12-EP C7 0 PACKAGE OUTLINE 1210 NON-POLAR CAPACITOR C8 0 PACKAGE OUTLINE 0402 NON-POLAR CAPACITOR C9, C10 0 PACKAGE OUTLINE 0603 NON-POLAR CAPACITOR R8, R11 0 PACKAGE OUTLINE 0402 RESISTOR R14, R15 0 PACKAGE OUTLINE 0603 RESISTOR PCB 1 PCB Board:MAX17292 EVALUATION KIT www.maximintegrated.com Maxim Integrated │  4 MAX17292 Evaluation Kit Evaluates: MAX17292 MAX17292 EV PCB Layout Diagrams MAX17292 EV Kit—Top Silkscreen MAX17292 EV Kit—Component Side MAX17292 EV Kit—Layer 2 GND MAX17292 EV Kit—Layer 3 www.maximintegrated.com Maxim Integrated │  5 MAX17292 Evaluation Kit Evaluates: MAX17292 MAX17292 EV PCB Layout Diagrams (continued) MAX17292 EV Kit—Solder Side MAX17292 EV Minimal Component Schematic www.maximintegrated.com Maxim Integrated │  6 MAX17292 Evaluation Kit Evaluates: MAX17292 MAX17292 EV Schematic Ordering Information PART MAX17292EVKIT# TYPE EV Kit #Denotes RoHS compliant. www.maximintegrated.com Maxim Integrated │  7 Evaluates: MAX17292 MAX17292 Evaluation Kit Revision History REVISION NUMBER REVISION DATE 0 9/16 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. │  8