EV8763D-L-00A High Efficiency, 12A, 18V Synchronous Step-down Converter Evaluation Board The Future of Analog IC Technology DESCRIPTION FEATURES The EV8763D-L-00A is an evaluation board for the MP8763DGL, a high efficiency monolithic synchronous step-down converter with output discharge function. • • • • The EV board can deliver 12A continuous load current over a wide 8V to 18V operating input range. High efficiency can be achieved over a wide output current load range. • • Wide 8V to 18V Operating Input Range 12A Output Current Low RDS(ON) Internal Power MOSFETs Proprietary Switching Loss Reduction Technique Adaptive COT for Ultrafast Transient Response Programmable Soft Start and Shutdown Time Pre-Bias Start up Programmable Switching Frequency from 200kHz to 1MHz Non-latch OCP, OVP Protection and Thermal Shutdown Output Adjustable from 0.611V to 13V Available in a QFN3x4 Package Constant-On-Time (COT) control mode provides fast transient response and eases loop stabilization. • • This EV board can be turned on or shut down via a remote ON/OFF input that is referenced to ground. This input is compatible with popular logic devices. • ELECTRICAL SPECIFICATION APPLICATIONS Parameter Input Voltage Output Voltage Output Current Symbol Value Units VIN 8 – 18 V VOUT IOUT 1.8 12 V A • • • • • • • • • Storage Set-top Boxes XDSL Modem/DSLAM Samll-cell Base Stations Personal Video Recorders Flat Panel Television and Monitors Distributed Power Systems 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. EV8763D-L-00A EVALUATION BOARD 100 95 90 85 80 75 70 65 (L x W x H)85.5 mm x 85.5mm x 1.6 mm) Board Number EV8763D-L-00A MPS IC Number MP8763DGL 60 55 50 0.01 0.1 1 EV8763D-L-00A Rev.1.0 www.MonolithicPower.com 8/4/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 10 100 1 EV8763D-L-00A – 12A, 18V SYNCHRONOUS STEP-DOWN CONVERTER EV BOARD EVALUATION BOARD SCHEMATIC C1D 0.1 U1 M P8763D VIN 9,14 IN BST 8 R7 634k R5 499k 2 R3 4.7 C7 NS VCC 7 C5 1 SW MP8763D 15, 16 VCC L1 1 2M C8 NS EN FB PG 5 4 C6 220nF PGND 6 3 C2B C2C C2D 4 4 4 C4 82pF R1 R9 2k 20k Vout1 C2E 0.1 VOUT 1 GND GND1 FB R2 10k 10,11,12,13 1 SS R8 100k AGND R6 100k C2A NS SW R4 EN PGOOD SW C3 0.1 FREQ 1 GND C1C 0.1 2 VIN C1A C1B 1 1 GND EV8763D-L-00A Rev.1.0 www.MonolithicPower.com 8/4/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 2 EV8763D-L-00A – 12A, 18V SYNCHRONOUS STEP-DOWN CONVERTER EV BOARD EV8763D-L-00A BILL OF MATERIALS Qty 2 4 0 3 1 1 1 0 1 1 1 1 1 1 2 1 1 1 Ref Value Description Ceramic Capacitor; C1A, C1B 10μF 35V;X7R;1210; C1C, C1D, Ceramic Capacitor; 0.1μF C2E, C3 50V;X7R;0603 C2A NS Ceramic Capacitor; C2B, C2C, C2D 47μF 6.3V;X5R;1206 Ceramic Capacitor; C4 82pF 50V;COG;0603 C5 1μF Capacitor;25V;X7R Ceramic Capacitor; C6 220nF 25V;X7R;0603 C7, C8 NS Inductor;1μH; L1 1μH 1.35mOhm;32A R1 20k Film Resistor;1% R2 10k Film Resistor;1%; R3 4.7Ω Film Resistor;5% R4 2M Film Resistor;5%; R5 499k Film Resistor;1% R6, R8 100k Film Resistor;1%; R7 634k Film Resistor;1% R9 2k Film Resistor;1%; U1 Step Down Converter Package Manufacture Part Number 1210 muRata GRM32ER7YA106KA12L 0603 muRata GRM188R71H104KA93D POSCAP 1206 TDK C3216X5R0J476M 0603 muRata GRM1885C1H820JA01D 0603 muRata GRM188R71E105KA12 0603 muRata GRM188R71E223JA01D 0603 SMD Wurth 7443330100 0603 0603 0603 0603 0603 0603 0603 0603 QFN16 3X4 Yageo Yageo Yageo Yageo Yageo Yageo Yageo Yageo MPS RC0603FR-0720KL RC0603FR-0710KL RC0603JR-074R7L RC0603JR-072ML RC0603FR-07499KL RC0603FR-07100KL RC0603FR-07634KL RC0603FR-072KL MP8763DGL EV8763D-L-00A Rev.1.0 www.MonolithicPower.com 8/4/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 3 EV8763D-L-00A – 12A, 18V SYNCHRONOUS STEP-DOWN CONVERTER EV BOARD EVB TEST RESULTS Performance waveforms are tested on the EV8763D-L-00A evaluation board. VIN = 12V, VOUT = 1.8V, L = 1µH, TA = +25ºC, unless otherwise noted. 1 3000 100 95 0.8 2500 90 85 0.6 0.4 2000 80 0.2 1500 75 70 0 -0.2 1000 65 60 -0.4 -0.6 500 55 50 0.01 0.1 1 10 100 0 0.01 -0.8 0.1 1 10 100 -1 0 2 4 6 8 10 12 0.4 0.3 0.2 0.1 0 -0.1 -0.2 -0.3 -0.4 8 9 10 11 12 13 14 15 16 17 18 EV8763D-L-00A Rev.1.0 www.MonolithicPower.com 8/4/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 4 EV8763D-L-00A – 12A, 18V SYNCHRONOUS STEP-DOWN CONVERTER EV BOARD EVB TEST RESULTS (continued) Performance waveforms are tested on the EV8763D-L-00A evaluation board. VIN = 12V, VOUT = 1.8V, L = 1µH, TA = +25ºC, unless otherwise noted. VOUT AC Coupled 50mV/div. VOUT AC Coupled 50mV/div. VOUT AC Coupled 50mV/div. VIN AC Coupled 50mV/div. VIN AC Coupled 50mV/div. VIN AC Coupled 200mV/div. VSW 5V/div. VSW 10V/div. VSW 10V/div. IL 5A/div. IL 5A/div. VEN 1V/div. VEN 1V/div. VOUT 1V/div. VOUT 1V/div. VOUT 1V/div. VIN 10V/div. VSW 10V/div. VPG 5V/div. VPG 5V/div. IL 2A/div. VOUT 1V/div. VOUT 1V/div. VOUT 1V/div. VIN 10V/div. VSW 10V/div. VIN 10V/div. VSW 10V/div. VIN 10V/div. VSW 10V/div. IL 10A/div. IL 2A/div. IL 10A/div. IL 10A/div. EV8763D-L-00A Rev.1.0 www.MonolithicPower.com 8/4/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 5 EV8763D-L-00A – 12A, 18V SYNCHRONOUS STEP-DOWN CONVERTER EV BOARD EVB TEST RESULTS (continued) Performance waveforms are tested on the EV8763D-L-00A evaluation board. VIN = 12V, VOUT = 1.8V, L = 1µH, TA = +25ºC, unless otherwise noted. VOUT 1V/div. VEN 2V/div. VSW 10V/div. IL 2A/div. VOUT 1V/div. VEN 2V/div. VOUT 1V/div. VOUT 1V/div. VEN 2V/div. VEN 2V/div. VSW 10V/div. VSW 10V/div. IL 10A/div. IL 2A/div. VOUT(AC) 20mV/div. VOUT 1V/div. VSW 10V/div. VSW 10V/div. IL 10A/div. IOUT 5A/div. IL 10A/div. VOUT 1V/div. VOUT 1V/div. VSW 10V/div. VSW 10V/div. IL 2A/div. IL 2A/div. VOUT 1V/div. VSW 10V/div. IL 10A/div. EV8763D-L-00A Rev.1.0 www.MonolithicPower.com 8/4/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 6 EV8763D-L-00A – 12A, 18V SYNCHRONOUS STEP-DOWN CONVERTER EV BOARD PRINTED CIRCUIT BOARD LAYOUT Figure 1—Top Silk Layer Figure 2—Top Layer Figure 3—Inner Layer 1 Figure 4— Inner Layer 2 Figure 5—Bottom Layer EV8763D-L-00A Rev.1.0 www.MonolithicPower.com 8/4/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 7 EV8763D-L-00A – 12A, 18V SYNCHRONOUS STEP-DOWN CONVERTER EV BOARD QUICK START GUIDE 1. Connect the positive and negative terminals of the load to the VOUT and GND pins, respectively. 2. Preset the power supply output between 8V and 18V, and then turn off the power supply. 3. Connect the positive and negative terminals of the power supply output to the VIN and GND pins, respectively. 4. Turn the power supply on. The MP8763DGLwill automatically startup. 5. To use the Enable function, apply a digital input to the EN pin. Drive EN higher than 2V to turn on the regulator or less than 0.4V to turn it off. 6. Use R1 and R2 to set the output voltage with VFB = 0.611V. Follow the Application Information section in the device datasheet to select the proper value of R1, R2, inductor and output capacitor values when output voltage is changed. 7. If lower ripple at light loads is needed, then use 1.2μH or 1.5μH L1. But with the larger L1, the transient response peak to peak value will become larger too. 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. EV8763D-L-00A Rev.1.0 www.MonolithicPower.com 8/4/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 8