EV3414-J-00A 1.8A, 1MHz Synchronous Boost Converter Evaluation Board The Future of Analog IC Technology DESCRIPTION FEATURES The EV3414-J-00A is a Boost converter evaluation board for the MP3414, a synchronous, 1MHz fixed frequency, current mode step-up converter with output to input disconnect. The device can step up single-cell and two-cell alkaline, NiCd, and NiMH batteries up to 4V. It can startup from an input voltage as low as 0.8V and provides inrush current limiting as well as output short circuit protection. The output voltage also can be regulated when VIN>VOUT, and the P-channel MOS is no longer act as a low impedance switch. The EV3414-J-00A regulates the output voltage up to 3.3V from single cell AA battery without the uses of an external Schottky diode. The MP3414 is offered in a TSOT23-8 package. ELECTRICAL SPECIFICATION Parameter Input Voltage Output Voltage Symbol VIN VOUT Value 0.8-4 3.3 Units V V Up to 96% Efficiency True Output Load Disconnect Input Range: 0.6V to 4V Output Range: 1.8V to 4V 0.8V Low Voltage Start-Up Current Mode Control with Internal Compensation Short-Circuit Protection True Output Disconnect from Input VIN>VOUT Down Mode Operation High Efficiency at Light Load Conditions Inrush Current Limit and Internal Soft-Start 1MHz Fixed Frequency Switching Tiny External Components APPLICATION Single-Cell and Two-Cell Alkaline, NiCd, or NiMH Batteries Powered Products Personal Medical Devices Portable Media Players Wireless Peripherals Handheld Computers and Smart phones All MPS parts are lead-free and adhere to the RoHS directive. For MPS green status, please visit MPS website under Quality Assurance. GPS Receivers “Monolithic Power Systems”, “MPS”, and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. EV3414-J-00A EVALUATION BOARD EFFICIENCY (%) 100 90 Board Number MPS IC Number EV3414-J-00A MP3414-J 80 70 60 50 40 30 20 10 0 0.01 0.1 1 10 100 1000 EV3414-J-00A Rev. 1.01 www.MonolithicPower.com 10/9/2012 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2012 MPS. All Rights Reserved. 1 EV3414-J-00A―1.8A, 1MHZ SYNCHRONOUS BOOST CONVERTER EV BOARD EVALUATION BOARD SCHEMATIC VIN R6 NC SW SW C5 NC VOUT SENSE 3 C1B NS IN GND 1 R1 100k GND IN SW OUT 2 U1 FB EN R2 NC EN 8 EN C4 NC 5 NC 7 FB GND R5 10 R3 365k VOUT C2B NS GND C3 NC GND R4 210k AGND 6 PGND GND 4 GND OUT GND EV3414-J-00A BILL OF MATERIALS Qty RefDes Value 1 C1A 10μF 1 C2A 47μF 1 1 1 1 2 C1C, C2C C1B, C2B, C3, C4, C5 R1 R3 R4 R5 R2, R6 1 L1 1 U1 2 5 0.1μF NS 100k 365k 210k 10 NS 3.3μH Description Ceramic X7R Ceramic X7R Ceramic X7R Cap., 10V, Cap., 10V, Cap., 50V, Package Manufacturer Manufactuer_P/N 1210 muRata GRM32DR71C106KA01L 1210 muRata GRM32ER61A476KE20L 0603 muRata GRM188R71C104KA01D 0603 0603 0603 0603 Yageo Yageo Yageo Yageo RC0603FR-07100KL RC0603FR-07365KL RC0603FR-07210KL RC0603JR-0710R0L SMD SMD SMD TSOT23-8 Wurth TDK TOKO MPS 744062003 SLF7045T-3R3M2R5-PF D63CB-#A916CY-3R3M MP3414-J Not Stuff Film Res., 1% Film Res., 1% Film Res., 1% Film Res., 5% Not Stuff 20mOhm DCR, 2.5A 20mOhm DCR, 2.5A 21mOhm DCR, 2.57A Step-Up Converter EV3414-J-00A Rev. 1.01 www.MonolithicPower.com 10/9/2012 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2012 MPS. All Rights Reserved. 2 EV3414-J-00A―1.8A, 1MHZ SYNCHRONOUS BOOST CONVERTER EV BOARD EVB TEST RESULTS Performance waveforms are tested on the evaluation board. VIN = 1.8V, VOUT = 3.3V, L = 3.3µH, TA = 25°C, unless otherwise noted. VOUT_AC 50mV/div. VOUT_AC 10V/div. VOUT 2V/div. VEN 2V/div. VSW 2V/div. VSW 2V/div. VSW 2V/div. IL 500mA/div. IL 1A/div. VOUT 2V/div. VEN 2V/div. VOUT_AC 50mV/div. VOUT_AC 100mV/div. IOUT 100mA/div. IOUT 200mA/div. IL 500mA/div. VSW 2V/div. IL 500mA/div. VOUT_AC 50mV/div. VIN 1V/div. VOUT_AC 100mV/div. VIN 1V/div. EV3414-J-00A Rev. 1.01 www.MonolithicPower.com 10/9/2012 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2012 MPS. All Rights Reserved. 3 EV3414-J-00A―1.8A, 1MHZ SYNCHRONOUS BOOST CONVERTER EV BOARD PRINTED CIRCUIT BOARD LAYOUT Figure 1—Top Layer Figure 2—Bottom Layer Figure 3—Top Silk Layer EV3414-J-00A Rev. 1.01 www.MonolithicPower.com 10/9/2012 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2012 MPS. All Rights Reserved. 4 EV3414-J-00A―1.8A, 1MHZ SYNCHRONOUS BOOST CONVERTER EV BOARD QUICK START GUIDE The output voltage of this board is set to 3.3V. The board layout accommodates most commonly used inductors and output capacitors. 1. Preset power supply to 0.8V≤VIN≤4V; 2. Turn off the power supply; 3. Connect power supply terminals to Positive (+): IN Negative (-): GND 4. Connect Load to: Positive (+): OUT Negative (-): GND 5. Connect the EN to 0.8*VIN power supply, or connect the EN to VIN. Positive (+): EN Negative (-): GND 6. Turn on the power supply; 7. The output voltage VOUT can be adjusted by changing R4. And the value of R4 can be calculated by the following formula: VFB R4 R3 VOUT VFB Where VFB=1.21V and R3=365kΩ For example, if VOUT=3.3V 1.21 R4 365k 211.3k 3.3 1.21 Therefore use a 210kΩ resistor. 8. The VOUT in the EVB is set to 3.3V, if other output is need the R4 can be changed. NOTICE: The information in this document is subject to change without notice. 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. EV3414-J-00A Rev. 1.01 www.MonolithicPower.com 10/9/2012 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2012 MPS. All Rights Reserved. 5