EV4569-Q-00A 75V, 0.3A Synchronous Step-Down Converter Evaluation Board The Future of Analog IC Technology DESCRIPTION FEATURES The EV4569-Q-00A is an evaluation board for the MP\MPQ4569GQ, a step-down switching regulator with integrated high-side/low-side, high-voltage power MOSFETs. It provides a highly efficient output of up to 0.3A. • • • • The wide 4.5V to 75V input range accommodates a variety of step-down applications in automotive environment. A 5μA shutdown mode quiescent current in full temperature range is good for battery-powered applications. • • • It allows for high power conversion efficiency over a wide load range by scaling down the switching frequency under light-load condition to reduce the switching and gate driver losses. The EV4569-Q-00A is assembled and tested with QFN-10 (3mmx3mm) package. ELECTRICAL SPECIFICATIONS Parameter Input Voltage Output Voltage Output Current Symbol VIN VOUT IOUT Value 4.5-75 3.3 0.3 • • 20μA Quiescent Current (Active mode) Wide 4.5V to 75V Operating Input Range Programmable Soft-Start FB-Tolerance: 1% at Room Temperature; 2% at Full Temperature. Adjustable Output 1V Reference Voltage Output Low Shutdown Mode Current: 5μA Available in AEC-Q100 Grade 1 Fully Assembled and Tested APPLICATIONS • • • • Automotive Systems Industrial Power Systems Distributed Power Systems Battery Powered 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. Units V V A EV4569-Q-00A EVALUATION BOARD (L x W x H) 2.5” x 2.5” x 0.2” (6.4cm x 6.4cm x 0.5cm) Board Number EV4569-Q-00A MPS IC Number MPQ4569GQ EV4569-Q-00A Rev. 1.0 www.MonolithicPower.com 8/6/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2014 MPS. All Rights Reserved. 1 EV4569-Q-00A ―75V, 0.3A, SYNCHRONOUS STEP-DOWN CONVERTER EV BOARD EVALUATION BOARD SCHEMETIC EV4569-Q-00A BILL OF MATERIALS Qty. Designator Value 2 C1A, C1B 4.7uF 1 C1C 0.1uF 2 C2C, C2B 22uF 3 C3, C4, C2C 0.1uF 1 C5 39pF 1 C6 10nF 1 C7 1uF 1 C1D NS 1 1 2 1 1 1 1 2 1 L1 R1 R3, R8 R4 R5 R7 R9 R2, R6 U1 33uH 1M 0 10 510K 1.2M 100K NS Description Ceramic Capacitor; 100V;X7S;1210 Ceramic Capacitor; 100V;X7R;0603; Ceramic Capacitor; 16V;X7R;1210 Ceramic Capacitor; 16V;X7R;0603 Ceramic Capacitor; 50V;C0G;0603 Ceramic Capacitor; 50V;X7R;0603; Ceramic Capacitor; 16V;X7R;0603; Inductor;33uH; 110mΩ;1.55A Inductor;33uH; 163mΩ;1.2A Film Resistor;1%; Film Resistor;5%; Film Resistor;5%; Film Resistor;1%; Film Resistor;1% Film Resistor;1%; Step-Down Converter Package Manufacture Manufacture_PN 1210 TDK C3225X7S2A475K 0603 muRata GRM188R72A104KA35D 1210 muRata GRM32ER71C226KE18L 0603 muRata GRM188R71C104KA01D 0603 muRata GRM1885C1H390JA01 0603 muRata GRM188R71H103KA01D 0603 muRata GRM188R71C105KA12D SMD TDK CLF7045T-330M-H SMD ABC DM5028330ML 0603 0603 0603 0603 0603 0603 Yageo Yageo Yageo Yageo Yageo Yageo QFN10 MPS RC0603FR-071ML RC0603JR-070RL RC0603JR-0710RL RC0603FR-07510KL RC0603FR-071M2L RC0603FR-07100KL MPQ4569GQ EV4569-Q-00A Rev. 1.0 www.MonolithicPower.com 8/6/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2014 MPS. All Rights Reserved. 2 EV4569-Q-00A ―75V, 0.3A, SYNCHRONOUS STEP-DOWN CONVERTER EV BOARD EVB TEST RESULTS VIN = 12V, VOUT = 3.3V, L = 33µH, COUT=2x22μF, TA = +25°C, unless otherwise noted. EV4569-Q-00A Rev. 1.0 www.MonolithicPower.com 8/6/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2014 MPS. All Rights Reserved. 3 EV4569-Q-00A ―75V, 0.3A, SYNCHRONOUS STEP-DOWN CONVERTER EV BOARD EVB TEST RESULTS (continued) VIN = 12V, VOUT = 3.3V, L = 33µH, COUT=2x22μF, TA = +25°C, unless otherwise noted. EV4569-Q-00A Rev. 1.0 www.MonolithicPower.com 8/6/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2014 MPS. All Rights Reserved. 4 EV4569-Q-00A ―75V, 0.3A, SYNCHRONOUS STEP-DOWN CONVERTER EV BOARD PRINTED CIRCUIT LAYOUT Figure 1 – Top Silk Layer Figure 2 – Top Layer Figure 3 – Bottom Layer EV4569-Q-00A Rev. 1.0 www.MonolithicPower.com 8/6/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2014 MPS. All Rights Reserved. 5 EV4569-Q-00A ―75V, 0.3A, 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 to between 4.5V to 75V, and then turn it off. 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 MPQ4569GQ will automatically startup. 5. To use the Enable function, apply a digital input to the EN pin. Drive EN higher than 1.55V to turn on the regulator, drive EN less than 1.2V to turn it off. Float this pin to shut the chip down. 6. Internally a zener diode is connected from EN pin to GND pin. The typical clamping voltage of the zener diode is 6.5V. So VIN can be connected to EN through a high ohm resistor if the system doesn't have any other logic input acting as enable signal. The resistor needs to be designed to limit the EN pin sink current less than 150μA. Just note that there is an internal 3M resistor from EN to GND, so the external pull up resistor should be smaller than [VIN (MIN) - 1.55V] × 3M 1.55V to make sure the part can EN on at the lowest operation VIN. 7. Use R7 and R5 to set the output voltage with VFB=1V. For R7=1.2MΩ, R5 can be determined by: R5 = 1.2 MΩ VOUT − 1 Follow the Application Information section in the device datasheet to recalculate the inductor and output capacitor values when output voltage is changed. 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. EV4569-Q-00A Rev. 1.0 www.MonolithicPower.com 8/6/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2014 MPS. All Rights Reserved. 6