EV28164-D-00A High Efficiency Single Inductor Buck-Boost DC-DC Converter Evaluation Board The Future of Analog IC Technology DESCRIPTION FEATURES The EV28164-D-00A Evaluation Board is designed to demonstrate the capabilities of MPS’ MP28164. • • • • • • • • • • • • • The MP28164 is a highly-efficient, low quiescent current Buck-Boost converter, which operates from input voltage above, below and equal to the output voltage. The device provides power solution for products powered by a one-cell Lithium-Ion or multi-cell alkaline battery applications where the output voltage is within battery voltage range. The MP28164 operates with input voltage from 1.2V to 5.5V to provide adjustable output voltage (1.5V to 5V), and is available in QFN103x3mm package. ELECTRICAL SPECIFICATION Parameter Start-Up Voltage Operation Voltage Output Voltage Output Current Symbol Value Units VST VIN VOUT 1.8-5.5 1.2 – 5.5 3.3 V V IOUT 0–2 (1) V A 1.8V minimum startup input voltage 1.2V to 5.5V input work range 4A switching current limit 2MHz switching frequency Selectable PSM / PWM mode. Typical 25μA Quiescent current High efficiency up to 95%. Load disconnect during shutdown Internal soft start and compensation Power good indicator Hiccup mode for SCP OTP,OVP small QFN-11(2mmx3mm) package APPLICATIONS • • • • Battery-powered product Portable instruments Tablet PC Super-cap Charger 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. Note 1): This board can support 2A load if VIN>2.4V, the load capability is lower when VIN<2.4V due to inductor peak current limit. EV28164-D-00A EVALUATION BOARD 100 95 90 85 80 75 70 65 (L × W × H) 5.08cm × 5.08cm × 1.3cm Board Number MPS IC Number EV28164-D-00A MP28164GD 60 55 50 0.001 0.01 0.1 1 EV28164-D-00A Rev.1.0 www.MonolithicPower.com 10/27/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 10 1 EV28164-D-00A―HIGH EFFICIENCY SINGLE INDUCTOR BUCK-BOOST DC-DC CONVERTER EVB EVALUATION BOARD SCHEMATIC EV28164-D-00A BILL OF MATERIALS Qty Ref 1 1 1 1 1 2 C1, C2A, C2B C3 JP1 L1 R1 R2 R3,R4 1 U1 3 Value Description 22μF Ceramic Cap,10V,X5R 1μF Ceramic Cap,10V,X7R Header, 3-Pin 1μH 4.6mOhm, 19A inductor 560k Film Res., 1% 100k Film Res., 1% 100k Film Res., 5% 1.8-5.5V, 2MHz,4A, MP28164 Buck-Boost Converter Package Manufacturer Manufacturer P/N 0805 muRata GRM21BR61A226KE19L 0603 DI SMD 0603 0603 0603 QFN-11 (2mmX3mm) muRata GRM188R71A105KA61D Wurth Yageo Yageo Yageo MPS 744311100 RC0603FR-07560K RC0603FR-07100K RC0603JR-07100K MP28164GD EV28164-D-00A Rev.1.0 www.MonolithicPower.com 10/27/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 2 EV28164-D-00A―HIGH EFFICIENCY SINGLE INDUCTOR BUCK-BOOST DC-DC CONVERTER EVB EVB TEST RESULTS Performance waveforms are tested on the evaluation board. VIN = 3.3V, VOUT = 3.3V, L=1µH, COUT = 2x22µF, TA = 25°C, unless otherwise noted. 100 100 95 95 100 95 90 90 90 85 85 85 80 80 80 75 75 75 70 70 70 65 65 65 60 55 50 0.001 60 60 55 50 1.5 2 2.5 55 50 0.001 0.01 0.1 1 10 3 3.5 4 4.5 5 5.5 100 0.6 0.6 90 0.4 0.4 80 0.2 0.2 70 0 0 60 -0.2 -0.2 50 -0.4 -0.4 40 1.5 2 2.5 3 3.5 4 4.5 5 5.5 -0.6 0 45 40 40 35 35 30 30 25 25 1 1.5 2 0.1 1 10 -0.6 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 1 0.8 0.6 20 20 0.4 15 15 10 10 5 0 0 0.5 0.01 0.2 5 0.5 1 1.5 2 2.5 3 3.5 0 0 0.5 1 1.5 2 2.5 0 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 EV28164-D-00A Rev.1.0 www.MonolithicPower.com 10/27/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 3 EV28164-D-00A―HIGH EFFICIENCY SINGLE INDUCTOR BUCK-BOOST DC-DC CONVERTER EVB EVB TEST RESULTS (continued) Performance waveforms are tested on the evaluation board. VIN = 3.3V, VOUT = 3.3V, L=1µH, COUT = 2x22µF, TA = 25°C, unless otherwise noted. VOUT_AC 50mV/div. VOUT_AC 50mV/div. VOUT_AC 10mV/div. VSW1 2V/div. VSW1 2V/div. VSW1 2V/div. VSW2 2V/div. VSW2 2V/div. IL 2A/div. IL 2A/div. VSW2 2V/div. IL 2A/div. VOUT_AC 10mV/div. VOUT_AC 10mV/div. VOUT_AC 10mV/div. VSW1 2V/div. VSW1 2V/div. VSW1 2V/div. VSW2 2V/div. VSW2 2V/div. IL 500mA/div. IL 500mA/div. VSW2 2V/div. IL 500mA/div. VOUT_AC 100mV/div. VOUT_AC 100mV/div. VOUT_AC 100mV/div. VSW1 2V/div. VSW1 2V/div. VSW1 2V/div. VSW2 2V/div. VSW2 2V/div. VSW2 2V/div. IL 1A/div. IL 1A/div. IL 1A/div. EV28164-D-00A Rev.1.0 www.MonolithicPower.com 10/27/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 4 EV28164-D-00A―HIGH EFFICIENCY SINGLE INDUCTOR BUCK-BOOST DC-DC CONVERTER EVB EVB TEST RESULTS (continued) Performance waveforms are tested on the evaluation board. VIN = 3.3V, VOUT = 3.3V, L=1µH, COUT = 2x22µF, TA = 25°C, unless otherwise noted. VOUT_AC 50mV/div. VOUT_AC 50mV/div. VOUT_AC 20mV/div. VSW1 2V/div. VSW1 2V/div. VSW1 2V/div. VSW2 2V/div. VSW2 2V/div. VSW2 2V/div. IL 2A/div. IL 2A/div. IL 2A/div. VOUT 2V/div. VPG 2V/div. VIN 2V/div. VSW1 2V/div. VOUT 2V/div. VPG 2V/div. VIN 2V/div. VSW1 2V/div. VOUT 2V/div. VPG 2V/div. VIN 2V/div. VSW1 2V/div. VSW2 2V/div. IL 500mA/div. VSW2 2V/div. IL 1A/div. VSW2 2V/div. VOUT 2V/div. VPG 2V/div. VIN 2V/div. VSW1 2V/div. VOUT 2V/div. VPG 2V/div. VIN 2V/div. VSW1 2V/div. VOUT 2V/div. VPG 2V/div. VIN 2V/div. VSW1 2V/div. VSW2 2V/div. IL 1A/div. VSW2 2V/div. VSW2 2V/div. IL 1A/div. IL 5A/div. IL 2A/div. EV28164-D-00A Rev.1.0 www.MonolithicPower.com 10/27/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 5 EV28164-D-00A―HIGH EFFICIENCY SINGLE INDUCTOR BUCK-BOOST DC-DC CONVERTER EVB EVB TEST RESULTS (continued) Performance waveforms are tested on the evaluation board. VIN = 3.3V, VOUT = 3.3V, L=1µH, COUT = 2x22µF, TA = 25°C, unless otherwise noted. VOUT 2V/div. VPG 2V/div. VEN 5V/div. VSW1 2V/div. VSW2 2V/div. VOUT 2V/div. VPG 2V/div. VEN 5V/div. VSW1 2V/div. VOUT 2V/div. VPG 2V/div. VEN 5V/div. VSW1 2V/div. VSW2 2V/div. IL 500mA/div. VSW2 2V/div. IL 500mA/div. VOUT 2V/div. VPG 2V/div. VEN 5V/div. VOUT 2V/div. VPG 2V/div. VEN 5V/div. VSW1 2V/div. VSW1 2V/div. VSW2 2V/div. IL 1A/div. VSW2 2V/div. IL 1A/div. IL 2A/div. VOUT_AC 200mV/div. VOUT_AC 200mV/div. VOUT_AC 200mV/div. ILOAD 500mA/div. ILOAD 500mA/div. ILOAD 500mA/div. IL 2A/div. VOUT 2V/div. VPG 2V/div. VEN 5V/div. VSW1 2V/div. VSW2 2V/div. EV28164-D-00A Rev.1.0 www.MonolithicPower.com 10/27/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 6 EV28164-D-00A―HIGH EFFICIENCY SINGLE INDUCTOR BUCK-BOOST DC-DC CONVERTER EVB EVB TEST RESULTS (continued) Performance waveforms are tested on the evaluation board. VIN = 3.3V, VOUT = 3.3V, L=1µH, COUT = 2x22µF, TA = 25°C, unless otherwise noted. VOUT 2V/div. VOUT 2V/div. VSW1 2V/div. VSW1 2V/div. VSW2 2V/div. VSW2 2V/div. IL 2A/div. IL 2A/div. EV28164-D-00A Rev.1.0 www.MonolithicPower.com 10/27/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 7 EV28164-D-00A―HIGH EFFICIENCY SINGLE INDUCTOR BUCK-BOOST DC-DC CONVERTER EVB PRINTED CIRCUIT BOARD LAYOUT Figure 1: Top Silkscreen Layer Figure 2: Top Layer Figure 3: Bottom Layer EV28164-D-00A Rev.1.0 www.MonolithicPower.com 10/27/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 8 EV28164-D-00A―HIGH EFFICIENCY SINGLE INDUCTOR BUCK-BOOST DC-DC CONVERTER EVB QUICK START GUIDE 1. Preset the load to some value, e.g. 0.5A, notice that the MP28164 may enter SCP hiccup if starting up with a heavier load due to the startup current limit which is for inrush protection.. 2. Connect the positive and negative terminals of the load to the VOUT and GND pins, respectively. 3. Preset the power supply’s output voltage (1.8~5.5V), and then turn off the power supply. 4. Connect the positive and negative terminals of the power supply output to the VIN and GND pins, respectively. 5. Turn on the power supply. The MP28164 demo board will automatically start up. 6. To use the Enable function, apply a digital input to the EN pin. Drive EN higher than 1.2V to turn on the regulator or less than 0.4V to turn it off. 7. To use MODE pin for forced CCM operation, please turn off Vin then connect the jumper JP1 to VIN. 8. If other output voltage is preferred, The output voltage VOUT can be programmed by changing R1 and R2 according to below equation: R2 = R1× VFB VOUT − VFB Where VFB . Is typically 0.5V, and R1, R2’s units are in kΩ, VOUT ‘s unit is in V. The value of R1 is recommended to be from 300 kΩ through 620 kΩ for better efficiency at light load. The recommended output voltage can be from 1.5V through 5V. 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. EV28164-D-00A Rev.1.0 www.MonolithicPower.com 10/27/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 9