Evaluates: MAX15059A/MAX15059B 19-5281 Rev 0 5/10 MAX15059 Evaluation Kit General Description Features The MAX15059 evaluation kit (EV kit) demonstrates S 2.8V to 5.5V Supply Voltage Range the MAX15059 APD biasing pulse-width modulation S 70V Output Voltage (Approximate) (PWM) step-up DC-DC converter with an internal power S 0 to 4mA Output Current switch, current monitor, and adjustable current limiting. S Demonstrates APD Fast Current Limit The step-up converter switches at 400kHz. The EV kit operates from a DC supply voltage of 2.8V to 5.5V and S Demonstrates Undervoltage Lockout is configured to deliver approximately 70V, and 0 to S Demonstrates Thermal-Shutdown Feature 4mA of current at the output. The output voltage can be S MOUT Output Overvoltage Protection Through configured from VIN + 5V to 76V by replacing a resis- Clamping Circuit tor or adjusting the CNTRL voltage. The EV kit dem- onstrates the ICs APD fast current-limit, undervoltage- S Fully Assembled and Tested lockout (UVLO), and thermal-shutdown features. The EV kit also features an APD input load-simula- tor circuit for current monitoring and step-response measurements. Ordering Information The EV kit comes with the MAX15059AETE+ installed, but can also be used to evaluate the MAX15059BETE+. PART TYPE Warning: Voltages exceeding 42V may exist on the MAX15059EVKIT+ EV Kit VOUT, APD, MOUT, and PGND PCB pads. +Denotes lead(Pb)-free and RoHS compliant. Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION JU1, JU3 2 2-pin headers 1FF Q10%, 10V X5R ceramic C1 1 capacitor (0402) JU2 1 3-pin header Murata GRM155R61A105K 4.7FH, 1.5A inductor L1 1 0.1FF Q10%, 16V X7R ceramic Coilcraft ME3220-472MLB C3 1 capacitor (0402) 100V, 1.5A n-channel MOSFET Murata GRM155R71C104K (SOT23) N1 1 Vishay Si2328DS-T1-E3 0.1FF Q10%, 100V X7R ceramic (Top Mark: CHV) C4, C5 2 capacitors (0805) AVX 08051C104KAT R1 1 348kI Q1% resistor (0603) 0.01FF Q10%, 100V X7R ceramic R2 1 6.34kI Q1% resistor (0402) C6 1 capacitor (0805) R3 1 1kI Q1% resistor (0402) Murata GRM21BR72A103K R5 1 2.87kI Q1% resistor (0402) Not installed, ceramic capacitor R6 1 C7 0 10kI Q1% resistor (0402) (0402) R7 1 10kI Q1% resistor (0805) 10FF Q10%, 10V X5R ceramic R8 1 20kI Q1% resistor (1206) C9 1 capacitor (0805) R9 1 3.3kI Q1% resistor (0805) Murata GRM219R61A106K R10 1 100I Q1% resistor (0402) 100V, 150mA Schottky diode TP1, TP2, TP4 3 PC mini red test points (SOD123) D1 1 TP3, TP6 2 PC mini black test points Diodes Inc. BAT46W-7-F (Top Mark: L6) TP5 1 PC mini yellow test point Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.MAX15059 Evaluation Kit Component List (continued) DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION 3 Shunts APD boost converter U1 1 (16 TQFN-EP*) PCB: MAX15059 EVALUATION 1 Maxim MAX15059AETE+ KIT+ *EP = Exposed pad. Component Suppliers SUPPLIER PHONE WEBSITE AVX Corporation 843-946-0238 www.avxcorp.com Coilcraft, Inc. 847-639-6400 www.coilcraft.com Diodes Inforporated 805-446-4800 www.diodes.com Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com Vishay 402-563-6866 www.vishay.com Note: Indicate that you are using the MAX15059 when contacting these component suppliers. Quick Start Detailed Description of Hardware The MAX15059 EV kit demonstrates the MAX15059 Required Equipment in a small, 16-pin TQFN package with internal power MAX15059 EV kit switch, current monitor, and adjustable current-limiting 2.8V to 5.5V, 1A DC power supply circuit features. The circuits PWM step-up DC-DC converter is designed for APD biasing, switches at 0 to 5mA adjustable load rated for at least 76V 400kHz, and is configured to deliver approximately Digital multimeter (DMM) 70V, and 0 to 4mA of current to the APD output. The Warning: Voltages exceeding 42V may exist on the output voltage can be reconfigured from VIN + 5V to VOUT, APD, MOUT, and PGND PCB pads. 76V by replacing resistor R1, or adjusting the CNTRL voltage. The EV kit demonstrates the ICs APD fast Procedure current-limit, UVLO, and thermal-shutdown features. The EV kit is fully assembled and tested. Follow the The converter circuits PCB footprint is 8mm x 18mm. steps below to verify board operation. Caution: Do not The EV kit operates from a 2.8V to 5.5V DC supply volt- turn on the power supply until all connections are age and provides up to 4mA at the APD output. The completed. EV kits APD load-simulator circuit is used for current 1) Verify that a shunt is installed on jumper JU1 monitoring and step-response measurements. The cir- (70V output). cuit is comprised of MOSFET N1, resistors R7, R8, R9, and test points TP1, TP2, and TP3 (SGND). Test point 2) Verify that a shunt is installed on pins 1-2 of jumper TP4 provides access to the ICs BIAS signal. Voltages JU2 (enabled). exceeding 42V may exist on TP4. Additionally, bulk 3) Verify that a shunt is not installed on jumper JU3 capacitor C9 is provided in case long connecting cables (APD current limit is programmed by R5). are used to power the EV kit during lab evaluation. 4) Connect the adjustable load to the APD and SGND Capacitor C9 is not required in a typical design. PCB pads. SHDN and Enable 5) Connect the power supply to the VIN pad and the The EV kit features a jumper to enable and disable power-supply ground to the PGND pad. U1. Jumper JU2 disables the EV kit when the shunt is installed on pins 2-3. Installing the shunt on pins 1-2 6) Connect the DMM across the APD and SGND enables the EV kit. Refer to the Shutdown section in the PCB pads. MAX15059 IC data sheet for more information. See Table 7) Turn on the power supply and set it to 3.3V. 1 for jumper JU2 settings. 8) Verify that the DMM reads approximately 70V. 2 Evaluates: MAX15059A/MAX15059B