EV2910ES-00A 5V/12V Synchronous Buck PWM DC/DC and Linear Power Controller EV Board The Future of Analog IC Technology DESCRIPTION FEATURES The EV2910ES-00A is an evaluation board for the MP2910ES that is a dual output with one synchronous buck PWM and one linear controller. The part is used to generate logicsupply voltages for PC based systems. This EV board can be turned on or shut down via a remote EN input that is referenced to ground. This input is compatible with popular logic devices. This EV board also has power good indicator to conform to Intel® new platform requirement on FSB_VTT power plane. The PG port is pulled to ground when the output voltage is under 10% of its setting voltage. Input Voltage Output Voltage Output Current 5V or 12V VCC Supply Voltage Wide 5V to 20V Operating Input Range 10A Output Current Fixed 300KHz Frequency Internal Soft-Start Output Adjustable from 0.8V to 0.9xVIN APPLICATIONS • • • • • Graphic Card Motherboard, Desktop Servers IA Equipments Telecomm Equipments High Power DC-DC Regulators “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. ELECTRICAL SPECIFICATIONS Parameter • • • • • • Symbol Value Units VIN VOUT IOUT 5 – 20 3.3 10 V V A EV2910ES-00A EVALUATION BOARD Board Number MPS IC Number EV2910ES-00A MP2910ES EV2910ES-00A Rev. 1.0 www.MonolithicPower.com 10/10/2011 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2011 MPS. All Rights Reserved. 1 EV2910ES-00A –5V/12V Synchronous Buck PWM DC/DC and Linear Power Controller EV Board EVALUATION BOARD SCHEMATIC EV2910ES-00A Rev. 1.0 www.MonolithicPower.com 10/10/2011 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2011 MPS. All Rights Reserved. 2 EV2910ES-00A –5V/12V Synchronous Buck PWM DC/DC and Linear Power Controller EV Board EV2910ES-00A BILL OF MATERIALS Qty Ref Value 2 C1, C5 2 C2, C4 10µF 1 C3 1µF 1 C6 2 C7,C10 1µF 1 C8 2 Description 1000µF Electrolytic Cap. 25V Package Manufacturer Manufacturer P/N DIP Rubycon Ceramic Cap. 25V, X7R 1210 Murata Ceramic Cap. 25V, X7R 1206 TDK DIP Rubycon Ceramic Cap. 25V, X7R 0603 Murata GRM188R71E105KA12 0.1µF Ceramic Cap. 50V, X7R 0603 Murata GRM188R71H104KA93D C9, C12 1µF Ceramic Cap. 50V, X7R 0805 Murata GRM21BR71H105KA12L 2 C11, C13 NS Do Not Stuff 0603 1 D1 1 R1 4.02kΩ Film Resistor ,1% 0603 Yageo RC0603FR-074K02L 1 R2 8.06kΩ Film Resistor, 1% 0603 Yageo RC0603FR-078K06L Yageo RC0603JR-070RL 0603 Yageo RC0603FR-0731K6L 470µF Electrolytic Cap. 16V 0.5A, 40V Schottky Diode 0603 1000uF/25V GRM32DR71E106KA12 C3216X7R1E105K 470µF Diodes Inc B0540W 3 R3, R7, R10 0Ω Film Resistor ,5% 0603 1 R4 NS Do Not Stuff 0603 1 R5 2 R6, R13 10kΩ Film Resistor, 1% 0603 Yageo RC0603FR-0710KL 1 R8 15kΩ Film Resistor, 1% 0603 Yageo RC0603FR-0715KL 2 R9, R14 10Ω Film Resistor, 1% 0603 Yageo RC0603FR-0710RL 1 R11 100kΩ Film Resistor, 1% 0603 Yageo RC0603FR-07100KL 1 R12 20kΩ Film Resistor, 1% 0603 Yageo RC0603FR-0720KL 1 Q3 SO-8 APEC AP4224GM 2 Q2, Q5 2 Q1, Q4 NC AP4224, Rdson:20mΩ, Qg:23nC AM4842N, Rdson:12mΩ,Qg:25nC Do Not Stuff 1 Q6 NC Do Not Stuff 1 L1 4.7µH 1 U1 31.6kΩ Film Resistor ,1% Inductor, DCR=7.7mΩ, Irms=15A Step-Down Regulator SO-8 Analog Power AM4842N SO-8 SOT-23 SMD Wurth 7443551470 SOP14 MPS MP2910ES EV2910ES-00A Rev. 1.0 www.MonolithicPower.com 10/10/2011 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2011 MPS. All Rights Reserved. 3 EV2910ES-00A –5V/12V Synchronous Buck PWM DC/DC and Linear Power Controller EV Board PRINTED CIRCUIT BOARD LAYOUT Figure 1—Top Silk Layer Figure 2—Top Layer Figure 3—Inner Layer 1 Figure 4— Inner Layer EV2910ES-00A Rev. 1.0 www.MonolithicPower.com 10/10/2011 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2011 MPS. All Rights Reserved. 4 EV2910ES-00A –5V/12V Synchronous Buck PWM DC/DC and Linear Power Controller EV Board Figure 5—Bottom Layer QUICK START GUIDE 1. Connect the positive and negative terminals of the load to the SVOUT (or/and LVOUT) and GND pins, respectively. 2. Preset a power supply 1# output between 5V and 20V, and another power supply 2# output 5V or 12V, then turn off them. 3. Connect the positive and negative terminals of the power supply 1# output to the VIN and GND pins, and connect the positive and negative terminals of the power supply 2# output to the VCC and GND pins, respectively. 4. To use the Enable function, add a mosfet or transistor for Q6, and then apply a digital input to the EN pin. Drive EN higher than 2V to turn off the controller or less than 0.4V to turn it on. 5. Turn the power supplies on. The MP2910 will automatically startup. 6. Use R5 and R6 to set the output voltage with VFB = 0.8V. Follow the Application Information section in the device datasheet to select the proper value of R5, R6, inductor and output capacitor values when output voltage is 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. EV2910ES-00A Rev. 1.0 www.MonolithicPower.com 10/10/2011 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2011 MPS. All Rights Reserved. 5