EV4470-L-01A MPS | Alldatasheet

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Technical content

High-Efficiency, Fast-Transient, 5A, 36V Step-Down Converter Evaluation Board EV4470/4470A-L-00A Rev. 1.0 www.MonolithicPower.com 1 5/4/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2014 MPS. All Rights Reserved. The Future of Analog IC Technology

DESCRIPTION

The EV4470-L-01A is an evaluation board for the MP/MPQ4470, while EV4470A-L-01A is an evaluation board for the MP/MPQ4470A. MP/MPQ4470 and MP/MPQ4470A are high- efficiency step-down regulator with integrated power MOSFETs. They offer a very compact solution to achieve a 5A, continuous-output current over a wide input-supply range with excellent load and line regulation. They also provide fast transient response and good stability for wide input-supply and load range. MP/MPQ4470 have OVP latch while MP/MPQ4470A have no this function. The EV4470-L-01A and EV4470A-L-01A are fully assembled and tested evaluation boards. They generate +3.3V output voltage at load current up to 5A from a 4.5V to 36V input range. Switching frequency of both boards are set at 500kHz. ELECTRICAL SPECIFICATIONS Parameter Symbol Value Units Input Voltage V IN 4.5 – 36 V Output Voltage V OUT 3.3 V Output Current I OUT 5 A

FEATURES

  • Wide 4.5V-to-36V Operating Input Range
  • Guaranteed 5A, Continuous Output Current
  • Internal 40m Ω High-Side, 20mΩ Low-Side Power MOSFETs
  • Proprietary Switching-Loss-Reduction Technology
  • 1% Reference Voltage
  • Programmable Soft-Start Time
  • Low Drop-out Mode
  • SCP, OCP, OVP latch (EV4470 only), UVP and Thermal Shutdown

APPLICATIONS

  • Notebook Systems and I/O Power
  • Automotive Systems
  • Networking Systems
  • Industrial Supplies
  • Optical Communications Systems
  • Distributed Power and POL Systems 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 Monolithi c Power Systems, Inc. EVALUATION BOARD (6.4cm x 6.4cm x 1.0cm) Board Number MPS IC Numbe r EV4470-L-01A MPQ4470GL (6.4cm x 6.4cm x 1.0cm) Board Number MPS IC Number EV4470A-L-01A MPQ4470AGL

EV4470/4470A-L-00A – 5A, 36V, STEP-DOWN CONVERTER EVALUATION BOARD EV4470/4470A-L-00A Rev. 1.0 www.MonolithicPower.com 2 5/4/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2014 MPS. All Rights Reserved. EVALUATION BOARD SCHEMATIC 4.5-36V 3.3V/5A NS VIN 10uF C1A 50V1210 10uF C1B 50V0603 0.1uF C1C 50V 63.4K 1% 1uF 16V 100 K 499K EN PGOOD 33nF 50V 0.1uF 50V 10uH 620K 390 pF 50V 31.6 K 10K 22uF C2A 16 V 1210 22uF C2B 16V 1210 VOUT 0.1uF C2 C GND GND 4.99R3Vin Vin IN8,19 FREQ2 VCC20 PGOOD6 EN5 SS4 AGN D1 PGNDPGNDPGNDPGNDPGNDPGND11-16 FB 3 SWSWSWSW 9,10,17, 18 BST 7 SW MPQ4470/ 4470A EN VOUT 50V1210 0.1uF C1D 0805 EV4470/4470A-L-01A BILL OF MATERIALS Qty RefDes Value Description Package Manufacturer Manufactuer_P/N 2 C1A,C1B 10uF Ceramic Cap., 50V, X7R 1210 muRata GRM32ER71H106KA12L

3 C1C,C2C,

C3 0.1uF Ceramic Cap., 50V, X7R 0603 TDK C1608X7R1H104K 1 C1D 0.1uF Ceramic Cap., 50V, X7R 0805 muRata GRM21BR72A104KAC4L 2 C2A,C2B 22uF Ceramic Cap., 16V, X7R 1210 muRata GRM32ER71C226KE79 1 C4 390pF Ceramic Cap., 50V, C0G 0603 muRata GRM1885C1H391JA01D 1 C5 1uF Ceramic Cap., 16V, X7R 0603 muRata GRM188R71C105KA12D 1 C6 33nF Ceramic Cap., 50V, X7R 0603 muRata GRM188R71H333KA61D 1 L1 10uH Inductor, 16.3mOhm, 7.2A SMD Wurth 7443251000 1 R1 31.6k Film Res., 1% 0603 Yageo RC0603FR-0731K6L 1 R2 10k Film Res., 1% 0603 Yageo RC0603FR-0710KL 1 R3 4.99 Ω Film Res., 1% 0603 Yageo RC0603FR-074R99L 1 R4 620k Film Res., 1% 0603 Yageo RC0603FR-07620KL 1 R5 499k Film Res., 1% 0603 Yageo RC0603FR-07499KL 1 R6 100k Film Res., 5% 0603 Yageo RC0603JR-07100KL 1 R7 63.4k Film Res., 1% 0603 Yageo RC0603FR-0763K4L 1 R9 0 Ω Film Res., 5% 0603 Yageo RC0603JR-070RL

1 R8 NS

1 U1 Step-Down Regulator QFN20-

(for EV4470) MPQ4470AGL (for EV4470A)

EV4470/4470A-L-00A – 5A, 36V, STEP-DOWN CONVERTER EVALUATION BOARD EV4470/4470A-L-00A Rev. 1.0 www.MonolithicPower.com 3 5/4/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2014 MPS. All Rights Reserved. EVB TEST RESULTS Performance waveforms are tested on the evaluation board. VIN = 24V, VOUT = 3.3V, TA = 25°C, unless otherwise noted. 100 0.01 0.1 1 10 0 1 1.5 2 2.5 3 3.5 4 4.5 5 300 400 500 600 700 1 1.5 2 2.5 3 3.5 4 4.5 5 450 500 550 0 5 10 15 20 25 30 35 40 -1.50 -1.00 -0.50 0.00 0.50 1.00 1.50 0 1 02 03 04 0 -1.00 -0.50 0.00 0.50 1.00 012345

EV4470/4470A-L-00A – 5A, 36V, STEP-DOWN CONVERTER EVALUATION BOARD EV4470/4470A-L-00A Rev. 1.0 www.MonolithicPower.com 4 5/4/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2014 MPS. All Rights Reserved. EVB TEST RESULTS (continued) Performance waveforms are tested on the evaluation board. VIN = 24V, VOUT = 3.3V, TA = 25°C, unless otherwise noted.

EV4470/4470A-L-00A – 5A, 36V, STEP-DOWN CONVERTER EVALUATION BOARD EV4470/4470A-L-00A Rev. 1.0 www.MonolithicPower.com 5 5/4/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2014 MPS. All Rights Reserved. EVB TEST RESULTS (continued) Performance waveforms are tested on the evaluation board. VIN = 24V, VOUT = 3.3V, TA = 25°C, unless otherwise noted.

EV4470/4470A-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 w hen integrating MPS products into any application. MPS will not assume any legal responsibility for any said applications. EV4470/4470A-L-00A Rev. 1.0 www.MonolithicPower.com 7 5/4/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2014 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 4.5 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 MPQ4470/4470AGL will automatically startup. 5. To use the Enable function, apply a digital input to the EN pin. Drive EN higher 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 R5 and R8. The EN threshold is 0.86V (falling edge), so V IN UVLO threshold is. )1(86.0 R8 R5+× 7. Use R1 and R2 to set the output voltage with V FB = 0.815V. For R2 = 10k Ω, R1 can be determined by: )815.0(27.12 −×= OUTVR1 (kΩ). Follow the Application Information section in the device datasheet to recalculate the compensation, inductor and output capacitor values when output voltage is changed.