EVQ4314-R-01A

EVQ4314-R-01A 45V, 4A, Low-IQ, Synchronous Step-Down Converter with Frequency Spread Spectrum Evaluation Board, AEC-Q100 Qualified DESCRIPTION The EVQ4314-R-01A evaluation board is designed to demonstrate the capabilities of the MPQ4314, a synchronous, step-down switching regulator with a configurable frequency and integrated, internal high-side MOSFET (HSFET) and low-side MOSFET (LS-FET). It provides up to 4A of highly efficient output current (IOUT), with current mode control for fast loop response. efficiency across a wide load range is achieved by scaling down the switching frequency (fSW) under light-load conditions to reduce switching and gate driver losses. Frequency foldback helps prevent inductor current runaway during start-up. Thermal shutdown provides reliable, fault-tolerant operation. High duty cycle and low-dropout (LDO) mode are provided for automotive cold crank conditions. The wide 3.3V to 45V input voltage (VIN) range accommodates a variety of step-down applications in automotive input environments. A 1.7μA quiescent current (IQ) in shutdown mode allows the device to be used in batterypowered applications. High power conversion The EVQ4314-R-01A is fully assembled and tested. The MPQ4314-AEC1 is available in a QFN-20 (4mmx4mm) wettable flank package, and is AEC-Q100 Grade 1 qualified. PERFORMANCE SUMMARY Specifications are at TA = 25°C, unless otherwise noted Parameter Input voltage (VIN) range Output voltage (VOUT) Maximum output current (IOUT) Typical efficiency Switching frequency (fSW) Conditions Value VIN = 3.3V to 45V, IOUT = 0A to 4A VIN = 3.3V to 45V VIN = 12V, VOUT = 3.3V, IOUT = 4A 3.3V to 45V VOUT = 3.3V 4A 93.1% 410kHz EVQ4314-R-01A EVALUATION BOARD LxWxH (8.3cmx8.3cmx1.3cm) Board Number MPS IC Number EVQ4314-R-01A MPQ4314GRE-AEC1 EVQ4314-R-01A Rev. 1.0 MonolithicPower.com 3/21/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 1 EVQ4314-R-01A – 45V/4A, STEP-DOWN CONVERTER EVAL BOARD, AEC-Q100 QUICK START GUIDE 1. Preset the power supply (VIN) between 3.3V and 45V. Electronic loads represent a negative impedance to the regulator, and setting a current too high triggers hiccup mode. 2. Turn off VIN. If longer cables are used between the source and the evaluation board (>0.5m total), then install a damping capacitor at the input terminals, especially if VIN ≥ 24V. 3. Connect the power supply terminals to (see Figure 2 on page 3): a. Positive (+): VEMI b. Negative (-): GND 4. Connect the load terminals to (see Figure 2 on page 3): a. Positive (+): VOUT b. Negative (-): GND 5. After making the connections, turn on the power supply. The board should automatically start up. 6. To use the enable function, apply a digital input to the EN pin. Drive EN above 1V to turn the regulator on; drive EN below 0.85V to turn the regulator off. fSW (kHz) Fsw (kHz) 7. The MPQ4314’s oscillating (switching) frequency can be configured by an external frequency resistor (R3). R3 can be estimated based on the switching frequency (fSW) vs. frequency resistance (RFREQ) curve (see Figure 1). 2200 2000 1800 1600 1400 1200 1000 800 600 400 200 10 20 30 40 50 60 70 80 90 100 (KΩ) FRRQ(kΩ) RR FREQ Figure 1: R3 Frequency Resistance 8. To use the sync function, apply a 350kHz to 1000kHz external clock to the SYNCIN pin to synchronize the internal clock’s rising edge. 9. The output voltage (VOUT) is set by the external resistor divider. If R7 = 100kΩ, then R8 can be calculated using Equation (1): R8 = R7 VOUT -1 0.815V (1) Table 1 shows the recommended R7 and R8 values for common output voltages. Table 1: Resistor Selection for Output Voltages VOUT (V) 3.3 5 R7 (kΩ) 100 (1%) 100 (1%) R8 (kΩ) 32.4 (1%) 19.1 (1%) EVQ4314-R-01A Rev. 1.0 MonolithicPower.com 3/21/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 2 EVQ4314-R-01A – 45V/4A, STEP-DOWN CONVERTER EVAL BOARD, AEC-Q100 AAM PG GND SYNCO FCCM VIN = 3.3V to 45V VEMI Monolithic Power Systems MPQ4314 Demo Board EVQ4314-R-01A www.monolithicpower.com GND C5 R7 R8 R9 R5 C6 C1B C1D C2B VOUT U1 VOUT = 3.3V CIN5 C1C C1A R6 C4 L2 C3 R3 R4 + Load C2A 0A to 4A R1 V - GND SYNCIN GND EN Figure 2: Measurement Equipment Set-Up EVQ4314-R-01A Rev. 1.0 MonolithicPower.com 3/21/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 3 EVQ4314-R-01A – 45V/4A, STEP-DOWN CONVERTER EVAL BOARD, AEC-Q100 EVALUATION BOARD SCHEMATIC L1 MPZ2012S300AT000 L2 4.7µH VIN VEMI CIN1 1nF CIN3 1µF CIN2 10nF CIN4 1µF CIN5 47µF CIN5 is for damping the inputs C and L GND Input EMI Filter R6 for EMC R6 0Ω 6 VOUT (V) R7 (kΩ) SW R1 100kΩ 20 R4 51kΩ NC 19 FREQ C2A 47µF 10V 1210 C2B 47µF 10V 1210 C2C C2D NS NS 10nF 1nF 10nF COUT2 0.815V VOUT 1nF COUT4 3.3V/4A GND R8 32.4kΩ U1 SS PG High if VOUT is within -7% to +6% 14 PG R9 100kΩ SYNCIN VCC 16 4.9V SYNCO NC R5 NS 18 C3 22nF 25V 13 SYNCO COUT1 COUT3 C5 47pF MPQ4314 2 350kHz to 1000kHz 100 (1%) 19.1 (1%) C6 4.7µF 3 SYNCIN 410kHz FB EN PGND Soft Start 22nF → 1.63ms tSS = CSS (nF) / 13.5ms 5 7,8 MODE 1 4, 5, 10, 11 R3 75kΩ 100 (1%) 32.4 (1%) R7 100kΩ 9 EN R2 NS VIN R8 (kΩ) 3.3 2 JP1 1 C1D 0.1µF 50V 0603 BST 3, 12 C1C 0.1µF 50V 0603 17 AGND 3.3V to 45V C1A C1B 10µF 10µF 50V 50V 1210 1210 15 VIN C4 0.1µF L3 4.7µH Connect 2 to 1, AAM Connect 2 to 3, FCCM Package Reference Figure 3: Evaluation Board Schematic and Package Reference EVQ4314-R-01A Rev. 1.0 MonolithicPower.com 3/21/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 4 EVQ4314-R-01A – 45V/4A, STEP-DOWN CONVERTER EVAL BOARD, AEC-Q100 EVQ4314-R-01A BILL OF MATERIALS Qty Ref CIN1, COUT2, COUT4 CIN2, COUT1, COUT3 3 3 Value GRM216R71H102KA01 0603 Murata GRM188R71H103KA01D 1206 TDK C3216X7R1H105K SMD Panasonic EEHZA1J470P 1210 Murata GRM32ER71H106KA12L 0603 Murata GCJ188R71H104KA12D 1210 Murata GRM32ER61A476KE20L 0603 Murata GRM188R71E223JA01D 0603 Murata GRM188R71H104KA93D 0603 TDK C1608C0G1H470J 0603 Murata GRM188R61A475KE15D 0805 SMD TDK Cyntec MPZ2012S300AT000 VCMT063T-4R7MN5T Yageo Yageo Yageo Yageo Yageo RC0603FR-07100KL RC0603FR-0775KL RC0603FR-0751KL RC0603FR-070RL RC0603FR-0732K4L 2.54mm Test pin, 3-pin DIP Any 2mm Golden test pin DIP Custom (1) 1mm Golden test pin DIP Custom (1) QFN-20 (4mmx 4mm) MPS 47μF 2 C1A, C1B 10μF 2 C1C, C1D 0.1μF 2 C2A, C2B 47μF 1 C3 22nF 1 C4 0.1μF 1 C5 47pF 1 C6 4.7μF 1 1 L1 L2 10mΩ 4.7μH 1 L3 4.7μH 3 1 1 1 1 R1, R7, R9 R3 R4 R6 R8 C2C, C2D, R2, R5 JP1 VEMI, GND, VOUT, GND SYNCIN, ICS, PG, SYNCO, EN, GND, GND 100kΩ 75kΩ 51kΩ 0Ω 32.4kΩ U1 Murata 0603 0603 0603 0603 0603 CIN5 1 0603 XAL6060-472MEC 1 7 Manufacturer PN Coilcraft 1μF 4 Manufacturer SMD 10nF CIN3, CIN4 1 Package Ceramic capacitor, 50V, X7R Ceramic capacitor, 50V, X7R Ceramic capacitor, 50V, X7R Aluminum capacitor, 63V Ceramic capacitor, 50V, X7R Ceramic capacitor, 50V, X7R Ceramic capacitor, 10V, X5R Ceramic capacitor, 25V, X7R Ceramic capacitor, 50V, X7R Ceramic capacitor, 50V, C0G Ceramic capacitor, 10V, X5R Magnetic bead, 6A Inductor, 31.5mΩ, 6A Inductor, 15.02mΩ, 12.1A Film resistor, 1% Film resistor, 1% Film resistor, 1% Film resistor, 1% Film resistor, 1% 1nF 2 4 Description NS MPQ4314 45V/4A, step-down converter, AEC-Q100 MPQ4314GRE-AEC1 Note: 1) Contact an MPS FAE for more information regarding custom pins. EVQ4314-R-01A Rev. 1.0 MonolithicPower.com 3/21/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 5 EVQ4314-R-01A – 45V/4A, STEP-DOWN CONVERTER EVAL BOARD, AEC-Q100 EVB TEST RESULTS Performance curves and waveforms are tested on the evaluation board, VIN = 12V, VOUT = 3.3V, COUT = 2 x 47µF, L = 4.7µH, fSW = 410kHz, TA = 25°C, unless otherwise noted. Input Current vs. Load Current Input Current vs. Load Current 70 65 60 55 50 45 40 35 30 25 20 15 20 VIN=12V VIN=24V VIN=36V Vin=45V 100 90 INPUT CURRENT (µA) VIN=12V VIN=24V VIN=36V Vin=45V 10 EFFICIENCY (%) AAM mode, VOUT = 5V 110 30 40 50 60 70 80 LOAD CURRENT (µA) 80 70 60 50 40 30 20 90 100 10 30 40 50 60 70 LOAD CURRENT (µA) 80 90 100 Efficiency vs. Load Current AAM mode, VOUT = 3.3V, 0.1mA to 10mA AAM mode, VOUT = 3.3V, 10mA to 1000mA 90 100 80 95 70 90 60 50 40 Vin=12V Vin=24V Vin=36V Vin=45V 30 20 85 80 75 0.1 0.5 1 5 Vin=12V Vin=24V Vin=36V Vin=45V 70 65 10 60 10 10 LOAD CURRENT (mA) 20 95 18 EFFICIENCY (%) 90 85 80 Vin=12V Vin=24V Vin=36V Vin=45V 65 2000 3000 LOAD CURRENT (mA) Vin=12V Vin=24V Vin=36V Vin=45V 16 14 12 10 8 6 4 2 0 60 1000 1000 FCCM, VOUT = 3.3V, 0.1mA to 10mA 100 70 500 Efficiency vs. Load Current AAM mode, VOUT = 3.3V. 1A to 4A 75 100 LOAD CURRENT (mA) Efficiency vs. Load Current EFFICIENCY (%) 20 Efficiency vs. Load Current EFFICIENCY (%) INPUT CURRENT (µA) AAM mode, VOUT = 3.3V 4000 0.1 1 0.5 LOAD CURRENT (mA) EVQ4314-R-01A Rev. 1.0 MonolithicPower.com 3/21/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 5 10 6 EVQ4314-R-01A – 45V/4A, STEP-DOWN CONVERTER EVAL BOARD, AEC-Q100 EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board, VIN = 12V, VOUT = 3.3V, COUT = 2 x 47µF, L = 4.7µH, fSW = 410kHz, TA = 25°C, unless otherwise noted. Efficiency vs. Load Current Efficiency vs. Load Current FCCM, VOUT = 3.3V, 10mA to 1000mA FCCM, VOUT = 3.3V, 1A to 4A 100 100 Vin=12V Vin=24V Vin=36V Vin=45V 95 EFFICIENCY (%) EFFICIENCY (%) 80 60 40 20 90 85 80 Vin=12V Vin=24V Vin=36V Vin=45V 75 70 65 0 10 100 LOAD CURRENT (mA) 500 60 1000 1000 2000 3000 LOAD CURRENT (mA) 4000 Efficiency vs. Load Current Efficiency vs. Load Current AAM mode, VOUT = 5V, 0.1mA to 10mA AAM mode, VOUT = 5V, 10mA to 1000mA 90 100 70 EFFICIENCY (%) EFFICIENCY (%) 80 60 50 Vin=12V Vin=24V Vin=36V Vin=45V 40 30 20 10 0.1 1 0.5 LOAD CURRENT (mA) 5 80 Vin=12V Vin=24V Vin=36V Vin=45V 70 60 10 10 100 LOAD CURRENT (mA) Efficiency vs. Load Current Efficiency vs. Load Current AAM mode, VOUT = 5V, 1A to 4A FCCM, VOUT = 5V, 0.1mA to 10mA 100 EFFICIENCY (%) 95 EFFICIENCY (%) 90 90 85 80 Vin=12V Vin=24V Vin=36V Vin=45V 75 70 1000 2000 3000 LOAD CURRENT (mA) 4000 24 22 20 18 16 14 12 10 8 6 4 2 0 1000 Vin=12V Vin=24V Vin=36V Vin=45V 0.1 0.5 1 LOAD CURRENT (mA) EVQ4314-R-01A Rev. 1.0 MonolithicPower.com 3/21/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 5 10 7 EVQ4314-R-01A – 45V/4A, STEP-DOWN CONVERTER EVAL BOARD, AEC-Q100 EVB TEST RESULTS (continued) Efficiency vs. Load Current Efficiency vs. Load Current FCCM, VOUT = 5V, 10mA to 1000mA FCCM, VOUT = 5V, 1A to 4A 100 100 80 95 EFFICIENCY (%) EFFICIENCY (%) Performance curves and waveforms are tested on the evaluation board, VIN = 12V, VOUT = 3.3V, COUT = 2 x 47µF, L = 4.7µH, fSW = 410kHz, TA = 25°C, unless otherwise noted. 60 40 Vin=12V Vin=24V Vin=36V Vin=45V 20 0 50 10 100 500 LOAD CURRENT (mA) 90 Vin=12V Vin=24V Vin=36V Vin=45V 85 80 75 70 1000 1000 Load Regulation VOUT = 3.3V, FCCM 0.25 0.05 0.15 LOAD REGULATION (%) LOAD REGULATION (%) 4000 Load Regulation VOUT = 3.3V, AAM mode 0.05 -0.05 Vin=12V Vin=24V Vin=36V Vin=45V -0.15 -0.25 10 Vin=12V Vin=24V Vin=36V Vin=45V 0.03 0.02 0.01 0.00 -0.01 -0.02 4000 100 1000 LOAD CURRENT (mA) 0.04 10 Line Regulation 100 LOAD CURRENT(mA) 1000 4000 Line Regulation VOUT = 3.3V, AAM mode VOUT = 3.3V, FCCM 0.06 0.08 Io=10mA Io=2A Io=4A 0.04 0.02 0.00 -0.02 -0.04 -0.06 5 10 15 20 25 VIN (V) Io=10mA Io=2A Io=4A 0.06 LINE REGULATION (%) LINE REGULATION (%) 2000 3000 LOAD CURRENT (mA) 30 35 40 45 0.04 0.02 0.00 -0.02 -0.04 -0.06 -0.08 5 10 15 20 25 VIN (V) 30 EVQ4314-R-01A Rev. 1.0 MonolithicPower.com 3/21/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 35 40 45 8 EVQ4314-R-01A – 45V/4A, STEP-DOWN CONVERTER EVAL BOARD, AEC-Q100 EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board, VIN = 12V, VOUT = 3.3V, COUT = 2 x 47µF, L = 4.7µH, fSW = 410kHz, TA = 25°C, unless otherwise noted. Load Regulation Load Regulation VOUT = 5V, AAM mode VOUT = 5V, FCCM 0.06 0.05 Vin=12V Vin=24V Vin=36V Vin=45V 0.20 0.10 LOAD REGULATION (%) LOAD REGULATION (%) 0.30 0.00 -0.10 -0.20 -0.30 10 0.03 0.02 0.01 0.00 -0.01 -0.02 -0.03 4000 100 1000 LOAD CURRENT(mA) 10 Line Regulation 1000 VOUT = 5V, FCCM 0.06 0.09 Io=10mA Io=2A Io=4A 0.05 0.07 Io=10mA Io=2A Io=4A 0.05 LINE REGULATION (%) LINE REGULATION (%) 100 LOAD CURRENT(mA) Line Regulation VOUT = 5V, AAM mode 0.03 0.01 -0.01 -0.03 5 10 15 20 25 VIN (V) 30 35 40 45 0.04 0.03 0.02 0.01 0.00 -0.01 -0.02 -0.03 -0.04 5 Case Temperature Rise 10 15 20 25 VIN (V) 30 35 40 45 Case Temperature Rise VOUT = 3.3V VOUT = 5V 20 20 CASE TEMPERATURE RISE (°C) CASE TEMPERATURE RISE (°C) Vin=12V Vin=24V Vin=36V Vin=45V 0.04 15 10 5 0 0 1 2 3 LOAD CURRENT (A) 4 15 10 5 0 0 1 2 LOAD CURRENT (A) EVQ4314-R-01A Rev. 1.0 MonolithicPower.com 3/21/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 3 4 9 EVQ4314-R-01A – 45V/4A, STEP-DOWN CONVERTER EVAL BOARD, AEC-Q100 EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board, VIN = 12V, VOUT = 3.3V, COUT = 2 x 47µF, L = 4.7µH, fSW = 410kHz, TA = 25°C, unless otherwise noted. Low-Dropout Mode 2400 2200 2000 1800 1600 1400 1200 1000 800 600 400 200 0 VOUT = 5V 5.2 Rfreq=75K Rfreq=12K 4.9 4.6 4.3 VOUT (V) fSW (kHz) fSW vs. VIN 4.0 3.7 Io=0A Io=1A Io=2A Io=3A Io=4A 3.4 3.1 2.8 2.5 6 9 12 15 18 21 24 27 30 33 36 39 42 45 VIN (V) 3.3 3.6 3.9 4.2 4.5 4.8 5.1 5.4 5.7 6.0 VIN (V) EVQ4314-R-01A Rev. 1.0 MonolithicPower.com 3/21/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 10 EVQ4314-R-01A – 45V/4A, STEP-DOWN CONVERTER EVAL BOARD, AEC-Q100 EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board, VIN = 12V, VOUT = 3.3V, COUT = 2 x 47µF, L = 4.7µH, fSW = 410kHz, TA = 25°C, unless otherwise noted. CISPR25 Class 5 Peak Conducted Emissions CISPR25 Class 5 Average Conducted Emissions 150kHz to 108MHz CISPR25 CLASS 5 PK LIMITS AVG CONDUCTED EMI (dBµV) PK CONDUCTED EMI (dBµV) 150kHz to 108MHz 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 -5 -10 -15 -20 PK NOISE FLOOR 0.1 1 Frequency (MHz) 108 10 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 -5 -10 -15 -20 CISPR25 CLASS 5 AVG LIMITS AVG NOISE FLOOR CISPR25 Class 5 Peak Radiated Emissions 150kHz to 30MHz 108 150kHz to 30MHz 60 55 55 50 CISPR25 CLASS 5 PK LIMITS AVG RADIATED EMI (dBµV) 50 PK RADIATED EMI (dBµV) 10 CISPR25 Class 5 Average Radiated Emissions 60 45 40 35 30 25 20 15 10 5 0 45 40 35 CISPR25 CLASS 5 AVG LIMITS 30 25 20 15 10 5 0 PK NOISE FLOOR -5 -5 -10 0.1 1 Frequency (MHz) AVG NOISE FLOOR -10 30 10 0.1 CISPR25 Class 5 Peak Radiated Emissions Horizontal, 30MHz to 1GHz HORIZONTAL POLARIZATION CISPR25 CLASS 5 PK LIMITS 40 35 30 25 20 15 10 PK NOISE FLOOR 5 30 10 HORIZONTAL POLARIZATION 50 AVG RADIATED EMI (dBµV) 45 Frequency (MHz) Horizontal, 30MHz to 1GHz 55 50 1 CISPR25 Class 5 Average Radiated Emissions 55 PK RADIATED EMI (dBµV) Frequency (MHz) 1 0.1 45 40 35 30 25 CISPR25 CLASS 5 AVG LIMITS 20 15 10 5 0 0 -5 30 130 230 330 430 530 Frequency (MHz) 630 730 830 930 1000 AVG NOISE FLOOR -5 30 130 230 330 430 530 Frequency (MHz) 630 EVQ4314-R-01A Rev. 1.0 MonolithicPower.com 3/21/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 730 830 930 1000 11 EVQ4314-R-01A – 45V/4A, STEP-DOWN CONVERTER EVAL BOARD, AEC-Q100 EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board, VIN = 12V, VOUT = 3.3V, COUT = 2 x 47µF, L = 4.7µH, fSW = 410kHz, TA = 25°C, unless otherwise noted. CISPR25 Class 5 Average Radiated Emissions CISPR25 Class 5 Peak Radiated Emissions Vertical, 30MHz to 1GHz Vertical, 30MHz to 1GHz 1000 55 55 VERTICAL POLARIZATION 45 CISPR25 CLASS 5 PK LIMITS 40 35 30 25 20 15 10 PK NOISE FLOOR 5 VERTICAL POLARIZATION 50 AVG RADIATED EMI (dBµV) PK RADIATED EMI (dBµV) 50 45 40 35 30 25 CISPR25 CLASS 5 AVG LIMITS 20 15 10 5 0 0 -5 30 130 230 330 430 530 Frequency (MHz) 630 730 830 930 1000 AVG NOISE FLOOR -5 30 130 230 330 430 530 Frequency (MHz) 630 EVQ4314-R-01A Rev. 1.0 MonolithicPower.com 3/21/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 730 830 930 1000 12 EVQ4314-R-01A – 45V/4A, STEP-DOWN CONVERTER EVAL BOARD, AEC-Q100 EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board, VIN = 12V, VOUT = 3.3V, COUT = 2 x 47µF, L = 4.7µH, fSW = 410kHz, TA = 25°C, unless otherwise noted. Steady State Steady State IOUT = 0A, AAM mode IOUT = 0A, FCCM CH2: VOUT/AC 50mV/div. CH2: VOUT/AC 10mV/div. CH4: IL 1A/div. CH4: IL 1A/div. CH1: VSW 5V/div. CH1: VSW 5V/div. 40ms/div. 2μs/div. Steady State Start-Up through VIN IOUT = 4A IOUT = 0A, AAM mode CH2: VOUT/AC 10mV/div. CH3: VIN 5V/div. CH2: VOUT 1V/div. CH4: IL 2A/div. CH4: IL 1A/div. CH1: VSW 5V/div. CH1: VSW 10V/div. 2μs/div. 1ms/div. Start-Up through VIN Start-Up through VIN IOUT = 0A, FCCM IOUT = 4A CH3: VIN 5V/div. CH1: VSW 5V/div. CH3: VIN 5V/div. CH1: VSW 5V/div. CH2: VOUT 2V/div. R1: PG 5V/div CH4: IL 1A/div. CH2: VOUT 2V/div. CH4: IL 2A/div. R1: PG 5V/div 1ms/div. 1ms/div. EVQ4314-R-01A Rev. 1.0 MonolithicPower.com 3/21/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 13 EVQ4314-R-01A – 45V/4A, STEP-DOWN CONVERTER EVAL BOARD, AEC-Q100 EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board, VIN = 12V, VOUT = 3.3V, COUT = 2 x 47µF, L = 4.7µH, fSW = 410kHz, TA = 25°C, unless otherwise noted. Shutdown through VIN Shutdown through VIN IOUT = 0A, AAM mode IOUT = 0A, FCCM CH3: VIN 5V/div. CH3: VIN 5V/div. CH1: VSW 5V/div. CH4: IL 1A/div. CH2: VOUT 1V/div. CH2: VOUT 2V/div. R1: PG 5V/div CH4: IL 500mA/div. CH1: VSW 5V/div. 10ms/div. 10ms/div. Shutdown through VIN Start-Up through EN IOUT = 4A IOUT = 0A, AAM mode CH3: VEN 2V/div. CH3: VIN 5V/div. CH1: VSW 5V/div. CH2: VOUT 1V/div. CH2: VOUT 2V/div. R1: PG 5V/div CH4: IL 5A/div. CH4: IL 2A/div. CH1: VSW 10V/div. 4ms/div. 1ms/div. Start-Up through EN Start-Up through EN IOUT = 0A, FCCM IOUT = 4A CH3: VEN 2V/div. CH3: VEN 2V/div. CH1: VSW 5V/div. CH1: VSW 5V/div. CH2: VOUT 2V/div. R1: PG 5V/div CH4: IL 2A/div. CH2: VOUT 2V/div. R1: PG 5V/div CH4: IL 5A/div. 1ms/div. 1ms/div. EVQ4314-R-01A Rev. 1.0 MonolithicPower.com 3/21/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 14 EVQ4314-R-01A – 45V/4A, STEP-DOWN CONVERTER EVAL BOARD, AEC-Q100 EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board, VIN = 12V, VOUT = 3.3V, COUT = 2 x 47µF, L = 4.7µH, fSW = 410kHz, TA = 25°C, unless otherwise noted. Shutdown through EN Shutdown through EN IOUT = 0A, AAM mode IOUT = 0A, FCCM CH3: VEN 2V/div. CH3: VEN 2V/div. CH1: VSW 5V/div. CH4: IL 1A/div. CH2: VOUT 2V/div. R1: PG 5V/div CH4: IL 1A/div. CH2: VOUT 1V/div. CH1: VSW 5V/div. 100ms/div. 100ms/div. Shutdown through EN SCP Entry IOUT = 4A IOUT = 0A, AAM mode CH3: VEN 2V/div. CH2: VOUT 2V/div. CH3: VPG 5V/div. CH1: VSW 5V/div. CH2: VOUT 2V/div. R1: PG 5V/div CH4: IL 5A/div. CH4: IL 10A/div. CH1: VSW 10V/div. 100µs/div. 20ms/div. SCP Entry SCP Entry IOUT = 0A, FCCM IOUT = 4A CH2: VOUT 2V/div. CH2: VOUT 2V/div. CH3: VPG 5V/div. CH3: VPG 5V/div. CH4: IL 10A/div. CH4: IL 5A/div. CH1: VSW 10V/div. CH1: VSW 10V/div. 20ms/div. 20ms/div. EVQ4314-R-01A Rev. 1.0 MonolithicPower.com 3/21/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 15 EVQ4314-R-01A – 45V/4A, STEP-DOWN CONVERTER EVAL BOARD, AEC-Q100 EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board, VIN = 12V, VOUT = 3.3V, COUT = 2 x 47µF, L = 4.7µH, fSW = 410kHz, TA = 25°C, unless otherwise noted. SCP Recovery SCP Recovery IOUT = 0A, AAM mode IOUT = 0A, FCCM CH2: VOUT 2V/div. CH2: VOUT 2V/div. CH3: VPG 5V/div. CH3: VPG 5V/div. CH4: IL 5A/div. CH4: IL 10A/div. CH1: VSW 10V/div. CH1: VSW 10V/div. 10ms/div. 20ms/div. SCP Recovery SCP Steady State IOUT = 4A CH2: VOUT 1V/div. CH2: VOUT 2V/div. CH3: VPG 5V/div. CH4: IL 5A/div. CH4: IL 5A/div. CH1: VSW 10V/div. CH1: VSW 10V/div. 20ms/div. 10ms/div. Load Transient SYNC Operation IOUT = 2A to 4A, 1.6A/μs IOUT = 4A, SYNC frequency = 350kHz CH3: SYNCIN 5V/div. CH2: VOUT/AC 100mV/div. CH2: VOUT 1V/div. CH4: IL 2A/div. CH1: VSW 10V/div. CH4: IOUT 2A/div. CH1: VSW 10V/div. 200µs/div. 2µs/div. EVQ4314-R-01A Rev. 1.0 MonolithicPower.com 3/21/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 16 EVQ4314-R-01A – 45V/4A, STEP-DOWN CONVERTER EVAL BOARD, AEC-Q100 EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board, VIN = 12V, VOUT = 3.3V, COUT = 2 x 47µF, L = 4.7µH, fSW = 410kHz, TA = 25°C, unless otherwise noted. SYNC Operation SYNCO Operation IOUT = 4A, SYNC frequency = 1000kHz IOUT = 4A, SYNC frequency = 350kHz CH3: SYNCIN 2V/div. CH3: SYNCO 2V/div. CH2: VOUT 1V/div. CH4: IL 2A/div. CH1: VSW 5V/div. CH4: IL 2A/div. CH2: VOUT 1V/div. CH1: VSW 5V/div. 1µs/div. 2µs/div. SYNCO Operation PG in Start-Up through VIN IOUT = 4A, SYNC frequency = 1000kHz IOUT = 0A, AAM mode CH3: SYNCO 2V/div. CH3: VIN 5V/div. CH2: VOUT 2V/div. CH4: IL 2A/div. CH2: VOUT 1V/div. CH1: VSW 5V/div. CH4: VPG 2V/div. CH1: VSW 10V/div. 1µs/div. 1ms/div. PG in Shutdown through VIN PG in Start-Up through EN IOUT = 0A, AAM mode IOUT = 0A, AAM mode CH3: VEN 2V/div. CH3: VIN 5V/div. CH2: VOUT 2V/div. CH2: VOUT 2V/div. CH4: VPG 2V/div. CH4: VPG 2V/div. CH1: VSW 5V/div. CH1: VSW 5V/div. 20ms/div. 1ms/div. EVQ4314-R-01A Rev. 1.0 MonolithicPower.com 3/21/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 17 EVQ4314-R-01A – 45V/4A, STEP-DOWN CONVERTER EVAL BOARD, AEC-Q100 EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board, VIN = 12V, VOUT = 3.3V, COUT = 2 x 47µF, L = 4.7µH, fSW = 410kHz, TA = 25°C, unless otherwise noted. PG in Shutdown through EN Low-Dropout Mode IOUT = 0A, AAM mode VIN = 3.3V, VOUT set to 3.3V, IOUT = 0A CH3: VEN 2V/div. CH4: IL 50mA/div. CH2: VOUT 2V/div. CH3: VIN 500mV/div. CH1: VSW 1V/div. CH2: VOUT 500mV/div. CH4: VPG 2V/div. CH1: VSW 5V/div. 100ms/div. 4µs/div. Low-Dropout Mode Load Dump VIN = 3.3V, VOUT set to 3.3V, IOUT = 4A VIN = 12V to 36V, IOUT = 4A CH3: VIN 1V/div. CH2: VOUT 1V/div. CH3: VIN 10V/div. CH2: VOUT 2V/div. CH4: IL 2A/div. CH1: VSW 50V/div. CH4: IL 1A/div. CH1: VSW 1V/div. 4µs/div. 100ms/div. Cold Crank VIN Ramping Up and Down VIN = 12V to 3.3V to 5V, IOUT = 4A IOUT = 0.1A CH3: VIN 5V/div. CH3: VIN 1V/div. CH2: VOUT 1V/div. CH2: VOUT 1V/div. CH4: IL 2A/div. CH1: VSW 5V/div. 4ms/div. 1s/div. EVQ4314-R-01A Rev. 1.0 MonolithicPower.com 3/21/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 18 EVQ4314-R-01A – 45V/4A, STEP-DOWN CONVERTER EVAL BOARD, AEC-Q100 EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board, VIN = 12V, VOUT = 3.3V, COUT = 2 x 47µF, L = 4.7µH, fSW = 410kHz, TA = 25°C, unless otherwise noted. VIN Ramping Down and Up VIN Ramping Down and Up IOUT = 1mA IOUT = 4A 4.5V CH3: VIN 10V/div. 4.5V CH3: VIN 10V/div. CH2: VOUT 2V/div. CH2: VOUT 2V/div. CH4: IL 2A/div. CH4: IL 5A/div. CH1: VSW 20V/div. CH1: VSW 20V/div. 10s/div. 10s/div. EVQ4314-R-01A Rev. 1.0 MonolithicPower.com 3/21/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 19 EVQ4314-R-01A – 45V/4A, STEP-DOWN CONVERTER EVAL BOARD, AEC-Q100 PCB LAYOUT (2) Figure 4: Top Silk and Top Layer Figure 5: Mid-Layer 1 Figure 6: Mid-Layer 2 Figure 7: Bottom Layer and Bottom Silk Note: 2) The copper thickness is 2oz. EVQ4314-R-01A Rev. 1.0 MonolithicPower.com 3/21/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 20 EVQ4314-R-01A – 45V/4A, STEP-DOWN CONVERTER EVAL BOARD, AEC-Q100 REVISION HISTORY Revision # 1.0 Revision Date 3/21/2022 Description Initial Release Pages Updated - 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. EVQ4314-R-01A Rev. 1.0 MonolithicPower.com 3/21/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 21