EV8770C-Q-00A High-Efficiency, 700kHz, 8A, 17V Step-Down Converter Evaluation Board DESCRIPTION Features Wide 3V-to-17V Operating Input Range The EV8770C-Q-00A Evaluation Board is 8A Output Current designed to demonstrate the capabilities of MPS MP8770C, a fully-integrated high- 22m/10m Low-R Internal Power DS(ON) MOSFETs frequency, synchronous rectified, step-down, switch-mode converter with internal power 100A Low IQ Current MOSFETs. It offers a very compact solution to Output Adjustable from 0.6V achieve a 8A continuous output current over a High-Efficiency Synchronous-Mode wide input range, with excellent load and line Operation regulation. The MP8770C has synchronous- Pre-biased Startup mode operation for higher efficiency over the Fixed 700kHz Switching Frequency output current-load range. Forced PWM Operation External Programmable Soft Startup Time Constant On-Time control operation provides EN and Power Good for Power Sequencing very fast transient response and easy loop Over-Current Protection and Hiccup design as well as very tight output regulation. Thermal Shutdown Full protection features include SCP, OCP, Available in a QFN-16 (3mm 3mm) UVP, and thermal shutdown. package The MP8770C requires a minimal number of APPLICATIONS readily-available, standard, external components and is available in a space-saving Security Camera QFN-16 (3mm3mm) package. Portable Device, XDSL Device (1) Digital Set-Top Boxes ELECTRICAL SPECIFICATION Flat-Panel Television and Monitors Parameter Symbol Value Units General Purposes Notes: Input Voltage V 12 V IN 1) For different Input/output voltage specs and different output capacitor/inductor may need change the application Output Voltage VOUT 1 V circuit parameters Output Current I 8 OUT A All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For MPS green status, please visit the MPS website under Quality Assurance. MPS, the MPS logo, and Simple, Easy Solutions are trademarks of Monolithic Power Systems, Inc. or its subsidiaries. EV8770C-Q-00A EVALUATION BOARD Efficiencyvs.LoadCurrent V =1V,L=0.56H,DCR=1.5m OUT 100 90 80 70 60 50 40 30 20 Vin=5V 10 Vin=12V 0 Board Number MPS IC Number 0.02.0 4.06.0 8.0 LOADCURRENT(A) EV8770C-Q-00A MP8770CGQ EV8770C-Q-00A Rev.1.0 www.MonolithicPower.com 1 10/21/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2019 MPS. All Rights Reserved. EFFICIENCY(%)EV8770C-Q-00A 17V, 700kHz, 8A, STEP-DOWN CONVERTER EVALUATION BOARD SCHEMATIC EV8770C-Q-00A BILL OF MATERIALS Qty Ref Value Description Package Manufacturer Part Number C1,C1A, Ceramic Cap., 25V, 6 C2,C2A, 22F 0805 muRata GRM21BR61E226ME44L X5R C2B,C2C C1B,C2D Ceramic Cap., 25V, 3 0.1F 0603 muRata GRM188R71E104KA01D C3 X7R Ceramic Cap., 25V, 1 C4 1F 0603 muRata GRM188R71E105KA12D X7R Ceramic Cap., 16V, 1 C5 22nF 0603 muRata GRM188R71C223KA01D X7R Ceramic Cap., 50V, 1 C6 56pF 0603 muRata GRM1885C1H560JA01D C0G 1 R1 20k Thick Film Res., 1% 0603 Yageo RC0603FR-0720KL 1 R2 30k Thick Film Res., 1% 0603 Yageo RC0603FR-0730KL 1 R3 0 Thick Film Res., 1% 0603 Yageo RC0603FR-070RL 1 R4 100k Thick Film Res., 1% 0603 Yageo RC0603FR-07100KL 0 R5 NS 0603 1 R6 100k Thick Film Res., 1% 0603 Yageo RC0603FR-07100KL 1 R7 1k Thick Film Res., 1% 0603 Yageo RC0603FR-071KL 1 R8 10 Thick Film Res., 1% 0603 Yageo RC0603JR-0710RL 1 L1 0.56H Inductor,DCR=1.5m SMD Wurth 744355256 Synchronous Step- QFN-16 1 U1 MP8770CGQ MPS MP8770CGQ Down Convert (3mm 3mm) EV8770C-Q-00A Rev.1.0 www.MonolithicPower.com 2 10/21/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2019 MPS. All Rights Reserved. PGND AGND