EV0034 MPS | Alldatasheet

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2A, 1.3MHz Step-Up Converter EVALUATION BOARD EV0034 Rev. 1.1 www.MonolithicPower.com 1 2/16/2006 MPS Proprietary Information. Unaut horized Photocopy and Duplication Prohibited. © 2006 MPS. All Rights Reserved. The Future of Analog IC Technology

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 V IN 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. ELECTRICAL SPECIFICATIONS Parameter Symbol Value Units Input Voltage V IN 2.6 – 12 V Output Voltage V OUT 12 V Output Current I OUT 300 mA

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

APPLICATIONS

  • SOHO Routers, PCMCIA Cards, Mini PCI
  • Handheld Computers, PDAs
  • Cell Phones, Digital and Video Cameras
  • Small LCD Displays “MPS” and “The Future of Analog IC Technology”, are Trademarks of Monolithic Power Systems, Inc. EV0034 EVALUATION BOARD (6.4cm x 5.0cm x 1.0cm) Board Number MPS IC Number EV0034 MP1527DR 100 EFFICIENCY (%) 1 10 100 1000 LOAD CURRENT (mA) EV0034_EC01 Efficiency vs Load Current VOUT=18V VIN=5V VOUT=12V

EV0034 – 2A, 1.3MHz STEP-UP CONVERTER EVALUATION BOARD EV0034 Rev. 1.1 www.MonolithicPower.com 2 2/16/2006 MPS Proprietary Information. Unaut horized Photocopy and Duplication Prohibited. © 2006 MPS. All Rights Reserved. EVALUATION BOARD SCHEMATIC SW SW PGND EV0034_S01 PGND FB SS FAULT SGND COMP EN BP EN SGND NC NC IN IN IN FAULT GND NS ENABLE GND 4.7nF 10nF 10nF 10nF MBR0520L MP1527 NS NS NS GND IN OUT GND Input IC Power Output EV0034 BILL OF MATERIALS Qty Ref Value Description Package Manufacturer: P/N

3 C1, C5, C7 No Stuff

1 C2 4.7nF Ceramic Capacitor, 50V, X7R 0805 AVX: 08055C472KAT2A

3 C3, C8, C9 10nF Ceramic Capacitor, 50V, X7R 0805 AVX: 08055C103KAT2A

2 C4, C6 10µF Ceramic Capacitor, 16V, X5R 1210 AVX: 1210YD106KAT2A

1 C10 1µF Ceramic Capacitor, 16V, X7R 0603 TDK: C1608X7R1C105K

1 D1 Schottky Diode, 0.5A, 20V, SOD-123 SOD-123 Fairchild: MBR0520L 1 L1 5.0µH Inductor, 2.9A SMD Sumida: CDRH6D38-5R0NC 1 R1 5.6k Ω Resistor, 5% 0805 Panasonic: ERJ-6GEYJ562V 1 R2 90.9k Ω Resistor, 1% 0805 Panasonic: ERJ-6ENFJ9092V

1 R3 10k Ω Resistor, 1% 0805 Panasonic:

1 R4 100k Ω Resistor, 5% 0805 Panasonic:

2 R5, R7 470k Ω Resistor, 5% 0805 Panasonic:

1 R6 No Stuff

1 U1 Step-Up Converter, 2A, Fixed

Frequency MPS: MP1527DR

EV0034 – 2A, 1.3MHz STEP-UP CONVERTER EVALUATION BOARD NOTICE: The information in this document is subject to change wi thout notice. Please contact MPS for current specifications. Users should warrant and guarantee that third party Intellectual Property rights ar e 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 www.MonolithicPower.com 4 2/16/2006 MPS Proprietary Information. Unaut horized Photocopy and Duplication Prohibited. © 2006 MPS. All Rights Reserved. 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 V IN 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 V IN 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 V OUT can be altered by changing the value of R2. Determine the new value of R2 using the following formula: ⎛ −×= 1V V3R2R FB OUT Where VFB=1.22V and R3 remains 10kΩ.