EV9447-L-00A MPS | Alldatasheet
Document overview
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Technical content
High-Efficiency, Fast-Transient, 5A, 36V Step-Down Converter Evaluation Board EV9447-L-00A Rev. 1.0 www.MonolithicPower.com 1 5/1/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2018 MPS. All Rights Reserved.
DESCRIPTION
The EV9447-L-00A is an evaluation board for the MP 9447, a high -efficiency step-down regulator with integrated power MOSFETs. MP9447 offers a very compact solution to achieve a 5A, continuous -output current over a wide input-supply range with excellent load and line regulation. It also provides fast transient response and good stability for wide input - supply and load range. The EV9447-L-00A is a fully assembled and tested evaluation board . It generates a + 5V output voltage at load current up to 5A from a 7V to 36V input range. Switching frequency is set at 500kHz. ELECTRICAL SPECIFICATIONS Parameter Symbol Value Units Input Voltage VIN 7 – 36 V Output Voltage VOUT 5 V Output Current IOUT 5 A
FEATURES
Wide 7V-to-36V Operating Input Range Guaranteed 5A, Continuous Output Current Internal 65mΩ High-Side, 30mΩ Low-Side Power MOSFETs Proprietary Switching-Loss-Reduction Technology 1.5% Reference Voltage Programmable Soft-Start Time Low Drop-out Mode SCP, OCP, UVP and Thermal Shutdown
APPLICATIONS
General Consumer USB Power Supplies Cigarette Lighter Adapters Power Supply for Chargers All MPS parts are lead-free and adhere to the RoHS directive. For MPS green status, please visit MPS website under Quality Assurance. “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. EV9447-L-00A EVALUATION BOARD (6.4cm x 6.4cm x 1.0cm) Board Number MPS IC Number EV9447-L-00A MP9447GL
EV9447-L-00A – 5A, 36V, STEP-DOWN CONVERTER EVALUATION BOARD EV9447-L-00A Rev. 1.0 www.MonolithicPower.com 2 5/1/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2018 MPS. All Rights Reserved. EVALUATION BOARD SCHEMATIC
EV9447-L-00A – 5A, 36V, STEP-DOWN CONVERTER EVALUATION BOARD EV9447-L-00A Rev. 1.0 www.MonolithicPower.com 3 5/1/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2018 MPS. All Rights Reserved. EV9447-L-00A BILL OF MATERIALS Qty RefDes Value Description Package Manufacturer Manufactuer_P/N 2 C1A,C1B 10μF Ceramic Cap., 50V, X7R 1210 muRata GRM32ER71H106KA12L 3 C1C,C2C,C3 0.1μF Ceramic Cap., 50V, X7R 0603 muRata GRM188R71H104KA93D 1 C1D 0.1μF Ceramic Cap., 50V, X7R 0805 muRata GRM21BR71H104KA01L 2 C2A,C2B 22μF Ceramic Cap., 16V, X7R 1210 muRata GRM32ER71C226KE18L 1 C4 390pF Ceramic Cap., 50V, C0G 0603 muRata GRM1885C1H391JA01D 1 C5 1μF Ceramic Cap., 16V, X7R 0603 muRata GRM188R71C105KA12D 1 C6 33nF Ceramic Cap., 50V, X7R 0603 muRata GRM188R71H333KA61D
1 L1 10μH
Inductor, 14.4mOhm, 10A SMD Wurth 7443321000 Inductor, 16.3mΩ, 8.5A SMD Wurth 7443251000 1 R1 53.6k Film Res., 1% 0603 Yageo RC0603FR-0753K6L 1 R2 10k Film Res., 1% 0603 Yageo RC0603FR-0710KL 1 R3 4.99Ω Film Res., 1% 0603 Yageo RC0603FR-074R99L 1 R4 845k Film Res., 1% 0603 Yageo RC0603FR-07845KL 1 R5 499k Film Res., 1% 0603 Yageo RC0603FR-07499KL
0 R6,R8 NS
1 R7 100k Film Res., 1% 0603 Yageo RC0603FR-07100KL 1 R9 0Ω Film Res., 5% 0603 Yageo RC0603-070RL
1 U1 Step-Down Regulator QFN20-
EV9447-L-00A – 5A, 36V, STEP-DOWN CONVERTER EVALUATION BOARD EV9447-L-00A Rev. 1.0 www.MonolithicPower.com 4 5/1/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2018 MPS. All Rights Reserved. EVB TEST RESULTS Performance waveforms are tested on the evaluation board. VIN = 24V, VOUT = 5V, TA = 25°C, unless otherwise noted.
EV9447-L-00A – 5A, 36V, STEP-DOWN CONVERTER EVALUATION BOARD EV9447-L-00A Rev. 1.0 www.MonolithicPower.com 5 5/1/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2018 MPS. All Rights Reserved. EVB TEST RESULTS (continued) Performance waveforms are tested on the evaluation board. VIN = 24V, VOUT = 5V, TA = 25°C, unless otherwise noted.
EV9447-L-00A – 5A, 36V, STEP-DOWN CONVERTER EVALUATION BOARD 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. EV9447-L-00A Rev. 1.0 www.MonolithicPower.com 7 5/1/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2018 MPS. All Rights Reserved. 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 7V and 36V, 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 MP9447GL will automatically startup. 5. To use the Enable function, apply a digital input to the EN pin. Drive EN highe r than 1. 25V to turn on the regulator, drive EN less than 0.86V to turn it off. 6. An input under voltage lockout (UVLO) function is implemented by the addition of a resistor divider R 5 and R 8. The EN threshold is 0.86V (falling edge), so V IN UVLO threshold i s. R50.86 (1 ) R8 7. Use R 1 and R 2 to set the output voltage with V FB = 0.8 15V. For R2 = 10kΩ, R1 can be determined by: OUTR1 12.27 (V 0.815) (kΩ). Follow the Application Information section in the device datasheet to recalculate the compensation, inductor and output capacitor values when output voltage is changed.