EV4415M-QB-00A High Efficiency 1.5A, 36V, 2.2MHz Synchronous Step Down Convertor Evaluation Board DESCRIPTION FEATURES The EV4415M-QB-00A is an evaluation board for the MP/MPQ4415MGQB. MP/MPQ4415MGQB is a synchronous, rectified, step-down, switch-mode convertor with built-in power MOSFETs and one input bypass capacitor. It offers a very compact solution to achieve a 1.5A of continuous output current with excellent load and line regulation over a wide input supply range. The MP/MPQ4415M uses synchronous mode operation to achieve high efficiency over the output current load range. The EV4415M-QB-00A is a fully assembled and tested evaluation board, it generates 3.3V output voltage at load current up to 1.5A from a 4V to 36V input range. ELECTRICAL SPECIFICATIONS Parameter Symbol Value Units Input Voltage Output Voltage VIN VOUT 4 – 36 3.3 V V Output Current IOUT 1.5 A Wide 4V to 36V Operating Input Range 1.5A Continuous Load Current 90mΩ High-Side, 50mΩ Low-Side Internal Power MOSFETs High-Efficiency Synchronous Mode Operation Default 2.2MHz Switching Frequency 450kHz to 2.2MHz Frequency Sync Forced Continuous Conduction Mode (CCM) Internal Soft Start (SS) Power Good (PG) Indicator Over-Current Protection (OCP) with ValleyCurrent Detection and Hiccup Thermal Shutdown Output Adjustable from 0.8V Available in a QFN-13 (2.5mmx3mm) Package CISPR25 Class 5 Compliant AEC-Q100 Grade-1 APPLICATIONS Automotive Industrial Control Systems Medical and Imaging Equipment Telecom Applications Distributed Power Systems All MPS parts are lead-free, halogen 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. EVALUATION BOARD (L x W x H) 2.5” x 2.5” x 0.4” (6.4cm x 6.4cm x 1.0cm) Board Number MPS IC Number EV4415M-QB-00A MP/MPQ4415MGQB EV4415M-QB-00A Rev. 1.0 www.MonolithicPower.com 1/11/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2017 MPS. All Rights Reserved. 1 EV4415M-QB-00A 36V/1.5A STEP DOWN CONVERTOR EVALUATION BOARD EVALUATION BOARD SCHEMATIC 4V-36V VIN FB1 BLM41PG181SN1L VEMI GND R3 for EMC D1 optional for high duty cycle Input EMC Filter CIN5 is for damping the input C and L Cable. U1 L1 2.2uH CIN1 CIN2 CIN3 CIN4 1nF 10nF 1uF 10uF BST 10 1,2 IN C1A C1B C1C R1 10uF 10uF 0.1uF 50V 50V 50V 10uF 1M CIN5 1.45V EN Apply a 450kHz to 2.2MHz external clock to synchronize the internal clock. 0.45V Hyst. R2 D1 R3 NS 20 NS C3 0.1uF L2 5 EN/SYNC SW 9 2.2uH NS 4.9V 11,12,13 Package reference PGND PGND BST 13 12 11 10 1 IN 2 3.3V/1.5A VOUT C8 NS GND GND AGND FB 6 0.807V R6 41.2K R4 51K R5 13K Reference for FB divider selection PGND IN 8 4 PG PG C7 NS C4 33pF 100K 0.1uF Open Drain output, pulled to low when Load short, open or thermal shutdown happening. C6 NS NC 3 7 VCC C2 R7 L3 short C5 47uF 10V 9 SW 8 AGND 7 VCC 3 4 5 6 NC PG EN/ SYNC FB Vo(V) 5 2.5 1.8 R6(kΩ) 41.2(1%) 41.2(1%) 41.2(1%) R5(kΩ) 7.68(1%) 19.6(1%) 33.5(1%) EV4415M-QB-00A Rev. 1.0 www.MonolithicPower.com 1/11/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2017 MPS. All Rights Reserved. 2 EV4415M-QB-00A 36V/1.5A STEP DOWN CONVERTOR EVALUATION BOARD EV4415M-QB-00A BILL OF MATERIALS Qty Value 1 2 Ref CIN1,C IN5 C1A, C1B C1C C2, C3 1 C4 33pF 1 47μF 1 1 1 C5 C6, C7, C8 D1 FB1 L1 1 L2 2.2μH Inductor, DCR, 3.3A 1 1 1 1 1 1 1 1 1 L3 R1 R3 R4 R5 R6 R7 R2 U1 VIN, VEMI, GND, GND, VOUT PG, GND, EN/ SYNC, GND Short 1M 20 51k 13k 41.2k 100k NS Film Res., 5% Film Res., 1% Film Res., 1% Film Res., 1% Film Res., 1% Film Res., 1% 5 2 3 5 4 Description Package Manufacturer Part Number 10μF Ceramic Cap., 50V, X5R 1206 muRata GRM31CR61H106KA12L 0.1μF 0.1μF Ceramic Cap., 50V, X7R Ceramic Cap., 16V, X7R Ceramic Cap., 50V, C0G Ceramic Cap., 10V, X5R 0603 0603 muRata muRata GRM188R71H104KA93D GRM188R71C104KA01D 0603 muRata GRM1885C1H330JA01D 1210 muRata GRM32ER61A476KE20L SMD TOKO DFE252012F-2R2MP2 0603 0603 0603 0603 0603 0603 Yageo Yageo Yageo Yageo Yageo Yageo RC0603JR-071ML RC0603FR-0720RL RC0603FR-0751KL RC0603FR-0713KL RC0603FR-0741K2L RC0603FR-07100KL QFN13(2X3) MPS NS NS NS NS NS 82mOhm Step-Down Regulator 2.0 Golden Pin HZ 2.54mm Test Pin HZ MPQ4415MGQB EV4415M-QB-00A Rev. 1.0 www.MonolithicPower.com 1/11/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2017 MPS. All Rights Reserved. 3 EV4415M-QB-00A 36V/1.5A STEP DOWN CONVERTOR EVALUATION BOARD TYPICAL CHARACTERISTICS EV4415M-QB-00A Rev. 1.0 www.MonolithicPower.com 1/11/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2017 MPS. All Rights Reserved. 4 EV4415M-QB-00A 36V/1.5A STEP DOWN CONVERTOR EVALUATION BOARD TYPICAL CHARACTERISTICS (continued) EV4415M-QB-00A Rev. 1.0 www.MonolithicPower.com 1/11/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2017 MPS. All Rights Reserved. 5 EV4415M-QB-00A 36V/1.5A STEP DOWN CONVERTOR EVALUATION BOARD EVB TEST RESULTS Performance waveforms are tested on the evaluation board. VIN = 12V, VOUT =3.3V, L=2.2µH, FSW=2.2MHz, TA = +25°C, unless otherwise noted. EV4415M-QB-00A Rev. 1.0 www.MonolithicPower.com 1/11/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2017 MPS. All Rights Reserved. 6 EV4415M-QB-00A 36V/1.5A STEP DOWN CONVERTOR EVALUATION BOARD EVB TEST RESULTS (continued) Performance waveforms are tested on the evaluation board. VIN = 12V, VOUT =3.3V, L=2.2µH, FSW=2.2MHz, TA = +25°C, unless otherwise noted. EV4415M-QB-00A Rev. 1.0 www.MonolithicPower.com 1/11/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2017 MPS. All Rights Reserved. 7 EV4415M-QB-00A 36V/1.5A STEP DOWN CONVERTOR EVALUATION BOARD EVB TEST RESULTS (continued) Performance waveforms are tested on the evaluation board. VIN = 12V, VOUT =3.3V, L=2.2µH, FSW=2.2MHz, TA = +25°C, unless otherwise noted. EV4415M-QB-00A Rev. 1.0 www.MonolithicPower.com 1/11/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2017 MPS. All Rights Reserved. 8 EV4415M-QB-00A 36V/1.5A STEP DOWN CONVERTOR EVALUATION BOARD PRINTED CIRCUIT BOARD LAYOUT Figure 1—Top Silk Layer and Top Layer Figure 3—Inner2 Layer Figure 2—Inner1 Layer Figure 4—Bottom Silk Layer and Bottom Layer EV4415M-QB-00A Rev. 1.0 www.MonolithicPower.com 1/11/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2017 MPS. All Rights Reserved. 9 EV4415M-QB-00A 36V/1.5A STEP-DOWN CONVERTER EVALUATION BOARD QUICK START GUIDE 1. Connect the positive and negative terminals of the load to the VOUT and GND pins, respectively. Be aware that electronic loads represent a negative impedance to the regulator and if set to a too high current will trigger Hiccup mode. 2. Preset the power supply output to between 4 and 36V, and then turn it off. If longer cables are used between the source and the EVB (>0.5m total), a damping capacitor should be installed at the input terminals. Especially when Vin is ≥ 24V. 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 MP/MPQ4415MGQB will automatically startup. 5. To use the Enable function, apply a digital input to the EN/Sync pin. Drive EN higher than 1.45V to turn on the regulator, drive EN less than 1V to turn it off. 6. To use the Sync function, apply a 450kHz to 2.2MHz external clock to the EN/Sync pin to synchronize the internal clock rising edge. 7. The output voltage is set by the external resistor divider. The feedback resistor (RFB1) also sets the feedback loop bandwidth with the internal compensation capacitor. Choose RFB1 to be around 40kΩ when VOUT 1V. RFB2 can then be calculated with below equation: R FB2 R FB1 VOUT 1 0.807V 8. The T-type network is highly recommended when VOUT is low. RT R FB1 FB VOUT R FB2 9. RT + RFB1 is used to set the loop bandwidth. The lower RT +RFB1 is, the higher the bandwidth. However, a high bandwidth may cause an insufficient phase margin, resulting in loop unstable. Therefore, a proper RT value is required to make a trade-off between bandwidth and phase margin. Below table lists the recommended feedback resistor and RT values for common output voltages. VOUT (V) RFB1 (kΩ) RFB2 (kΩ) RT (kΩ) 3.3 41.2 (1%) 13 (1%) 51 (1%) 5 41.2 (1%) 7.68 (1%) 51 (1%) 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. EV4415M-QB-00A Rev. 1.0 www.MonolithicPower.com 1/11/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2017 MPS. All Rights Reserved. 10