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| EV0034 2A, 1.3MHz Step-Up Converter The Future of Analog IC Technology EVALUATION BOARD DESCRIPTION The EV0034 is a MP1527 evaluation board configured to provide a regulated 12V output at up to 300mA from a 2.6V input or higher. The output voltage is adjustable from VIN to 25V by changing resistors on the evaluation board. The MP1527 has a high 1.3MHz switching frequency that allows for smaller external components, producing a compact solution for medium-to-high current step-up, flyback, and SEPIC applications. FEATURES * * * * * * * * * 2.6V Minimum Input Voltage 12V Output Voltage, Adjustable from VIN to 25V Up to 90% Efficiency 1.3MHz Switching Frequency Fully Assembled and Tested SOHO Routers, PCMCIA Cards, Mini PCI Handheld Computers, PDAs Cell Phones, Digital and Video Cameras Small LCD Displays APPLICATIONS ELECTRICAL SPECIFICATIONS Parameter Input Voltage Output Voltage Output Current Symbol VIN VOUT IOUT Value 2.6 - 12 12 300 Units V V mA "MPS" and "The Future of Analog IC Technology", are Trademarks of Monolithic Power Systems, Inc. EV0034 EVALUATION BOARD Efficiency vs Load Current 100 95 90 VOUT=12V EFFICIENCY (%) 85 80 75 70 65 60 55 50 1 VIN=5V VOUT=18V (L x W x H) 2.5" x 2.0" x 0.4" (6.4cm x 5.0cm x 1.0cm) Board Number EV0034 EV0034 Rev. 1.1 2/16/2006 MPS IC Number MP1527DR 10 100 LOAD CURRENT (mA) 1000 EV0034_EC01 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2006 MPS. All Rights Reserved. 1 EV0034 - 2A, 1.3MHz STEP-UP CONVERTER EVALUATION BOARD EVALUATION BOARD SCHEMATIC IN FAULT GND C8 10nF FAULT C2 4.7nF C1 NS C3 10nF COMP EN BP SGND SGND U1 MP1527 D1 MBR0520L C5 NS OUT SS FB PGND PGND SW SW EN NC NC IN R6 NS C9 10nF GND Output IC Power Input ENABLE GND J1 IN C7 NS IN GND EV0034_S01 EV0034 BILL OF MATERIALS Qty 3 1 3 2 1 1 1 1 1 1 1 2 1 1 Ref C1, C5, C7 C2 C3, C8, C9 C4, C6 C10 D1 L1 R1 R2 R3 R4 R5, R7 R6 U1 Value 4.7nF 10nF 10F 1F 5.0H 5.6k 90.9k 10k 100k 470k Description No Stuff Ceramic Capacitor, 50V, X7R Ceramic Capacitor, 50V, X7R Ceramic Capacitor, 16V, X5R Ceramic Capacitor, 16V, X7R Schottky Diode, 0.5A, 20V, SOD-123 Inductor, 2.9A Resistor, 5% Resistor, 1% Resistor, 1% Resistor, 5% Resistor, 5% No Stuff Step-Up Converter, 2A, Fixed Frequency Package Manufacturer: P/N 0805 0805 1210 0603 SOD-123 SMD 0805 0805 0805 0805 0805 AVX: 08055C472KAT2A AVX: 08055C103KAT2A AVX: 1210YD106KAT2A TDK: C1608X7R1C105K Fairchild: MBR0520L Sumida: CDRH6D38-5R0NC Panasonic: ERJ-6GEYJ562V Panasonic: ERJ-6ENFJ9092V Panasonic: ERJ-6ENFJ1002V Panasonic: ERJ-6GEYJ104V Panasonic: ERJ-6GEYJ474V MPS: MP1527DR EV0034 Rev. 1.1 2/16/2006 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2006 MPS. All Rights Reserved. 2 EV0034 - 2A, 1.3MHz STEP-UP CONVERTER EVALUATION BOARD PRINTED CIRCUIT BOARD LAYOUT Figure 1--Top Silk Layer Figure 2--Top Layer Figure 3--Bottom Layer EV0034 Rev. 1.1 2/16/2006 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2006 MPS. All Rights Reserved. 3 EV0034 - 2A, 1.3MHz STEP-UP CONVERTER EVALUATION BOARD QUICK START GUIDE The EV0034 is configured to produce a fixed 12V output voltage from an input voltage ranging from 2.6V to 12V: 1. Connect the positive and negative terminals of the load to the OUT and GND pins, respectively. 2. Preset the power supply output to between 2.6V and 12V, then turn it off. 3. Connect the positive and negative terminals of the power supply output to the IN and GND pins, respectively. 4. Connect the IN pin of the chip to the regulator's input supply VIN for bootstrapped operation (boot-strapped operation is required for VIN of less than 3V) through the IC Power jumper. 5. Turn the power supply on. The board is set up for automatic startup. Shunt the ENABLE jumper to disable the circuit. EN may be driven with an external digital signal to enable/disable the circuit. 6. Connect VIN to the input power source and apply a 2.6V to 12V voltage. 7. To enable the MP1527 by an external signal, connect a 0V to 2V signal to the EN input. A low voltage at EN turns off the MP1527, a high voltage turns it on. 8. The output voltage VOUT can be altered by changing the value of R2. Determine the new value of R2 using the following formula: V R2 = R3 x OUT - 1 V FB Where VFB=1.22V and R3 remains 10k. NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications. Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not assume any legal responsibility for any said applications. EV0034 Rev. 1.1 2/16/2006 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2006 MPS. All Rights Reserved. 4 |
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