EV3423-G-00A The Future of Analog IC Technology 9A, 600kHz Synchronous Step-up Converter with Output Disconnect Evaluation Board DESCRIPTION FEATURES EV3423-G-00A Evaluation Board is designed to demonstrate the capability of MP3423. MP3423 is a high-efficiency, synchronous, current-mode, step-up converter with output disconnect. • • • • • • • • • • • The MP3423 can provide small size solution for 5V/3.1A load from a supply voltage down to 2.8V. The integrated P-channel synchronous rectifier improves efficiency and eliminates the need for an external Schottky diode. The PMOS disconnects the output from the input when the part shuts down. The 600kHz switching frequency allows for small external components, while the internal compensation and soft-start minimize the external component count. The MP3423 is available in 14-pin QFN 2mmx2mm package. ELECTRICAL SPECIFICATION Parameter Symbol Value Units Input Voltage Output Voltage VIN VOUT 2.8 – 4.2 5 V Output Current IOUT 0 – 3.1 V A 2.5V to 5.5V Input Work Range 2.5V to 5.5V Output Range Internal Synchronous Rectifier 600kHz Fixed Frequency Switching 9A Switch Current Limit Capability 43uA Quiescent Current High Efficiency over Full Load Range Internal Soft-start and Compensation True Output Load Disconnect from Input OCP, SCP, OVP and OTP Protection Small QFN2x2-14 Package APPLICATIONS • • • • • Battery-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 Products, Quality Assurance page. “MPS” and “The Future of Analog IC Technology”, are Registered Trademarks of Monolithic Power Systems, Inc. EV3423-G-00A EVALUATION BOARD (L x W x H ) 6.35cm x 6.35cm x 0.6cm Board Number MPS IC Number EV3423-G-00A MP3423GG EV3423-G-00A Rev.1.0 6/27/2014 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2014 MPS. All Rights Reserved. 1 EV3423-G-00A – 9A, 600KHZ SYNCHRONOUS STEP-UP CONVERTER EVALUATION BOARD SCHEMATIC Notes: 1) NC (PIN10) need short to VIN. 2) NC (PIN7) need float or connect to GND 3) It is strongly recommended control IC on/off through EN pin. EV3423-G-00A BILL OF MATERIALS Qty Ref 4 1 C1A, C1B, C2B, C2C C2A L1 1 1 1 1 R1 R2 R3 1 U1 EV3423-G-00A Rev.1.0 6/27/2014 Value 22μF 1μF Description Ceramic Cap, 10V,X7R Ceramic Cap,10V,X5R RDC=6.6mΩ, 1.5μH IR=11A,Isat=14A, 787kΩ Film Res,1% 150kΩ Film Res,1% 100kΩ Film Res,1% 9A Synchronous Step-up MP3423 Converter with Output Disconnect Package Manufacturer Part Number 1210 Murata GRM32ER71A226KE20L 0603 Murata GRM188R61A105KA61D SMD Wurth 744311150 0603 0603 0603 YAGEO ROYAL ROYAL QFN-14 2mmx2mm MPS RC0603FR-07787KL RL0603FR-07150KL RL0603FR-07100KL MP3423GG www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2014 MPS. All Rights Reserved. 2 EV3423-G-00A – 9A, 600KHZ SYNCHRONOUS STEP-UP CONVERTER EVB TEST RESULTS Performance waveforms are tested on the evaluation board. VIN = 3.3V, VOUT = 5V, L = 1.5µH, TA = 25ºC, unless otherwise noted. EV3423-G-00A Rev.1.0 6/27/2014 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2014 MPS. All Rights Reserved. 3 EV3423-G-00A – 9A, 600KHZ SYNCHRONOUS STEP-UP CONVERTER EVB TEST RESULTS (continued) Performance waveforms are tested on the evaluation board. VIN = 3.3V, VOUT = 5V, L = 1.5µH, TA = 25ºC, unless otherwise noted. EV3423-G-00A Rev.1.0 6/27/2014 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2014 MPS. All Rights Reserved. 4 EV3423-G-00A – 9A, 600KHZ SYNCHRONOUS STEP-UP CONVERTER EVB TEST RESULTS (continued) Performance waveforms are tested on the evaluation board. VIN = 3.3V, VOUT = 5V, L = 1.5µH, TA = 25ºC, unless otherwise noted. EV3423-G-00A Rev.1.0 6/27/2014 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2014 MPS. All Rights Reserved. 5 EV3423-G-00A – 9A, 600KHZ SYNCHRONOUS STEP-UP CONVERTER PRINTED CIRCUIT BOARD LAYOUT Figure 1—Top Silk Layer Figure 2—Top Layer Figure 3—Bottom Layer EV3423-G-00A Rev.1.0 6/27/2014 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2014 MPS. All Rights Reserved. 6 EV3423-G-00A – 9A, 600KHZ SYNCHRONOUS STEP-UP CONVERTER QUICK START GUIDE The output voltage of this board is set to 5V. The board layout accommodates most commonly used components. 1. Preset Power Supply to 2.8V ≤ VIN ≤ 4.2V. 2. Turn Power Supply off. 3. Connect Power Supply terminals to: a. Positive (+): VIN b. Negative (–): GND 4. Connect Load to: a. Positive (+): VOUT b. Negative (–): GND 5. Turn Power Supply on after making connections. 6. The MP3423 is enabled on the evaluation board once VIN is applied. 7. The output voltage VOUT can be changed by varying R2. Calculate the new value using the formula: Vout = VFB × R1 + R2 R2 Where VFB = 0.807V and R1=787kΩ. 8. To use the Enable function, apply a digital input to the EN pin. Drive EN higher than 1.2V to turn on MP3423 or lower than 0.4V to turn it off. 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. EV3423-G-00A Rev.1.0 6/27/2014 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2014 MPS. All Rights Reserved. 7