EVQ4436A-R-00A

EVQ4436A-R-00A 45V, 6A, Low IQ, Synchronous, Step-Down Converter Evaluation Board DESCRIPTION FEATURES The EVQ4436A-R-00A evaluation board is designed to demonstrate the capabilities of MPS’s MPQ4436A-AEC1 and MPQ4436A.      The MPQ4436A is a frequency-configurable, synchronous, step-down, switching regulator with integrated, internal high-side and low-side power MOSFETs. It provides up to 6A of highly efficient output, with current mode control for fast loop response. The wide 3.3V to 45V input range accommodates a variety of step-down applications in an automotive input environment. A 1.7μA shutdown mode quiescent current allows the part to be used in battery-powered applications. High power conversion efficiency over a wide load range is achieved by scaling down the switching frequency under light-load conditions to reduce switching and gate driver losses.           Wide 3.3V to 45V Operating Voltage Range 6A Continuous Output Current 1.7μA Low Shutdown Supply Current 18μA Sleep Mode Quiescent Current Internal 48mΩ High-Side and 20mΩ LowSide MOSFETs 350kHz to 530kHz Programmable Switching Frequency for Car Battery Applications Synchronize to External Clock Multi-Phase Capability Out-of-Phase Synchronized Clock Output Frequency Spread Spectrum (FSS) for Low EMI Symmetric VIN for Low EMI Power Good Output External Soft Start 100ns Minimum On Time Selectable Advanced Asynchronous Mode (AAM) or Forced Continuous Conduction Mode (FCCM) Low-Dropout Mode Hiccup Over-Current Protection Available in a QFN-20 (4mmx4mm) Wettable Flank Package Available in AEC-Q100 Grade 1 Frequency foldback prevents inductor current runaway during start-up. Thermal shutdown provides reliable, fault-tolerant operation. High duty cycle and low dropout mode are also provided for automotive cold crank conditions.    ELECTRICAL SPECIFICATIONS APPLICATIONS Parameter Input voltage Output voltage Output current Symbol Value Units VEMI VOUT IOUT 3.3 to 45 3.3 6 V V A      Infotainment Clusters Advanced Driver Assistance Systems (ADAS) Industrial Power Systems 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. EVQ4436A-R-00A Rev. 1.0 MonolithicPower.com 12/21/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 1 EVQ4436A-R-00A – 45V, 6A, STEP-DOWN CONVERTER EVALUATION BOARD EVQ4436A-R-00A EVALUATION BOARD Efficiency vs. Load Current EFFICIENCY (%) VOUT = 3.3V, AAM, fSW = 470kHz 100 90 80 70 60 50 40 30 20 10 0 VIN=12V VIN=24V VIN=36V VIN=45V 0.1 1 10 100 1000 LOAD CURRENT (mA) 6000 (LxWxH) 9cmx9cmx1.3cm Board Number MPS IC Number EVQ4436A-R-00A MPQ4436AGR-AEC1 EVQ4436A-R-00A Rev. 1.0 MonolithicPower.com 12/21/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 2 EVQ4436A-R-00A – 45V, 6A, STEP-DOWN CONVERTER EVALUATION BOARD QUICK START GUIDE 1. Connect the load terminals to: a. Positive (+): VOUT b. Negative (-): GND 2. Set the load current between 0A and 6A. Electronic loads represent a negative impedance to the regulator. If they are set to an exceedingly high current, it may trigger over-current protection (OCP) or short current protection (SCP). 3. Preset the power supply output between 3.3V and 45V, then turn it off. 4. If long cables (>0.5m total) are used between the source and the EVB, install a damping capacitor at the input terminals. This is highly recommended when VEMI ≥ 24V. 3. Connect the power supply output terminals to: a. Positive (+): VEMI b. Negative (-): GND 4. Turn the power supply on. The board should automatically start up. The default VOUT is 3.3V. 5. 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 it off. 6. To use the sync function, apply a 350kHz to 530kHz external clock to the SYNCIN pin to synchronize the internal clock’s rising edge. 7. JP1 selects forced continuous conduction mode (FCCM) or advanced asynchronous mode (AAM). Connect pin 2 (mode) to pin 3 (VCC) of JP1 to force the MPQ4436A into FCCM. Connect pin 1 (GND) to pin 2 (mode) of JP1 to force the MPQ4436A into AAM. EVQ4436A-R-00A Rev. 1.0 MonolithicPower.com 12/21/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 3 EVQ4436A-R-00A – 45V, 6A, STEP-DOWN CONVERTER EVALUATION BOARD EVALUATION BOARD SCHEMATIC L1 L2 4.7μH 3.3V to 45V VIN VEMI CIN1 1nF CIN2 10nF CIN3 1nF CIN4 10nF CIN5 1μF CIN7 10μF CIN6 1μF CIN8 10μF CIN11 0.1μF CIN10 0.1μF CIN9 47μF CIN9 is for damping the input LC oscillation GND Input EMI Filter R4 for EMC R4 C7 C8 0.1μF 0.1μF R1 R19 10 R20 10 100k R3 62k 19 C3 10nF 50V 350kHz to 530kHz R23 R9 51k 6 FB R6 31.6k VOUT (V) R5 (kΩ) R6 (kΩ) 3.3 100 (1%) 31.6 (1%) 5 100 (1%) 19.1 (1%) R13 PG 14 SS 10 R7 100k 2 SYNCIN VCC 10 13 SYNCO R8 ICS SYNCO 15 10 R10 16 4.9V MODE ICS 10 High if VOUT is within -7% to +6% R11 PG R14 0 R12 R15 0 10 C6 4.7μF 1 2 10 4,5,10,11 SYNCIN MPQ4436A 9 EN R24 10 20 FREQ 470kHz Soft Start 10nF 1.6ms tSS = CSS(nF) / 6.25ms 3.3V/6A COUT1 COUT3 VOUT C2A C2B C9 C10 C5 47μF 47μF C2C C2D 0.1μF 0.1μF 10nF 1nF 10nF 1nF 47pF 10V 10V NS NS R21 R22 1210 1210 GND 10 10 COUT2 COUT4 L3 4.7μH R5 100k 18 0.815V 7,8 R16 0 3 EN C4 0.22μF SW AGND C1D 0.1μF 50V 0603 PGND C1C 0.1μF 50V 0603 17 C1A C1B 10μF 10μF 50V 50V 1210 1210 3, 12 VIN JP1 R17 0 1 VIN 0 BST U1 R18 0 Connect 2 to 1, AAM Connect 2 to 3, FCCM Package Reference FREQ SS 20 19 FB AGND VCC ICS 18 15 17 16 MODE 1 14 PG SYNCIN 2 13 SYNCO VIN 3 12 VIN PGND 4 11 PGND PGND 5 10 PGND 6 7 8 9 BST SW SW EN Figure 1: Evaluation Board Schematic EVQ4436A-R-00A Rev. 1.0 MonolithicPower.com 12/21/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 4 EVQ4436A-R-00A – 45V, 6A, STEP-DOWN CONVERTER EVALUATION BOARD EVQ4436A-R-00A BILL OF MATERIALS Qty 4 5 Ref CIN1, CIN3, COUT2, COUT4 CIN2, CIN4, C3, COUT1, COUT3 Value Description Package Manufacturer Manufacturer PN 1nF Ceramic capacitor, 50V, X7R 0603 Murata GRM216R71H102KA01 10nF Ceramic capacitor, 50V, X7R 0603 Murata GRM188R71H103KA01D 0805 Murata GRM21BR71H105KA12L 1206 Murata GRM31CR61H106KA12L SMD Panasonic EEHZA1J470P 1210 Murata GRM32ER71H106KA12L 0603 Murata GCJ188R71H104KA12D 1210 Murata GRM32ER61A476KE20L 0603 Murata GRM188R71C122KA01D 0603 TDK C1608C0G1H470J 0603 Murata GRM188R61A475KE15D 0402 Murata GRM155R71H104KE14D 1806 Murata BLM41PG600SN1L SMD Cyntec VCMT063T-4R7MN5T-99 SMD Coilcraft XAL6060-472ME 0402 Yageo RC0402FR-07100KL RC0603FR-062KL Ceramic capacitor, 50V, X7R Ceramic capacitor, 50V, X5R Aluminum capacitor, 63V Ceramic capacitor, 50V, X7R 2 CIN5, CIN6 1μF 2 CIN7, CIN8 10μF 1 CIN9 47μF 2 C1A, C1B 10μF 4 CIN10, CIN11, C1C, C1D 0.1μF Ceramic capacitor, 50V, X7R 2 C2A, C2B 47μF 1 C4 0.22μF 1 C5 47pF 1 C6 4.7μF 0.1μF 2 C7, C8, C9, C10 C2C, C2D Ceramic capacitor, 10V, X5R Ceramic capacitor, 16V, X7R Ceramic capacitor, 50V, COG Ceramic capacitor, 10V, X5R Ceramic capacitor, 50V, X7R 1 L1 1 L2 4.7μH 1 L3 4.7μH 1 R1 100kΩ Magnetic bead, 6A Inductor, 4.7μH, 31.5mΩ, 6A Inductor, 4.7μH, 14.4mΩ, 11A Film resistor, 1% 1 R3 62kΩ Film resistor, 1% 0603 Yageo 4 NS 1 R4 0Ω Film resistor, 5% 0603 Yageo RC0603JR-070RL 2 R5, R7 100kΩ Film resistor, 1% 0603 Yageo RC0603FR-07100KL 1 R6 R8, R10, R11, R12, R13, R23, R24 R9 R14, R15, R16, R17, R18 32.4kΩ Film resistor, 1% 0603 Yageo RC0603FR-0732K4L 10Ω Film resistor, 1% 0603 Yageo RC0603FR-0710RL 51kΩ Film resistor, 1% 0603 Yageo RC0603FR-0751KL 0Ω Film resistor, 1% 0402 Yageo RC0402FR-070RL 7 1 5 EVQ4436A-R-00A Rev. 1.0 MonolithicPower.com 12/21/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 5 EVQ4436A-R-00A – 45V, 6A, STEP-DOWN CONVERTER EVALUATION BOARD EVQ4436A-R-00A BILL OF MATERIALS (continued) Qty Ref Value 4 R19, R20, R21, R22 10Ω 1 U1 MPQ4436A 1 JP1 4 7 VEMI, GND, VOUT, GND SYNCIN, EN, GND, ICS, PG, SYNCO, GND Description Film resistor, 5% Step-down converter 3-pin connector, 2.54mm Package Manufacturer Manufacturer PN 0402 Yageo RC0402FR-0710RL QFN-20 (4mmx 4mm) MPS MPQ4436AGR-AEC1 Any Test point 2.0 golden pin Custom Test point 1.0 golden pin Custom EVQ4436A-R-00A Rev. 1.0 MonolithicPower.com 12/21/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 6 EVQ4436A-R-00A – 45V, 6A, STEP-DOWN CONVERTER EVALUATION BOARD EVB TEST RESULTS Efficiency vs. Load Current Efficiency vs. Load Current AAM CCM 100 90 80 70 60 50 40 30 20 10 0 EFFICIENCY (%) EFFICIENCY (%) Performance curves and waveforms are tested on the evaluation board. VIN = 12V, VOUT = 3.3V, L = 4.7µH, fSW = 470kHz, TA = 25°C, unless otherwise noted. VIN=12V VIN=24V VIN=36V VIN=45V 0.1 1 10 100 1000 6000 100 90 80 70 60 50 40 30 20 10 0 0.1 LOAD CURRENT (mA) Efficiency vs. Load Current 1 10 100 1000 LOAD CURRENT (mA) 6000 Efficiency vs. Load Current (Extreme light loads) AAM (Extreme light loads) FCCM 50 0.30 EFFICIENCY (%) VIN=12V VIN=24V VIN=36V VIN=45V 40 EFFICIENCY (%) VIN=12V VIN=24V VIN=36V VIN=45V 30 20 Vin=12V Vin=24V Vin=36V Vin=45V 0.20 0.10 10 0.00 0 0.01 0.025 0.04 0.055 0.07 0.085 LOAD CURRENT (mA) 0.1 0.01 0.025 0.04 0.055 0.07 0.085 LOAD CURRENT (mA) EVQ4436A-R-00A Rev. 1.0 MonolithicPower.com 12/21/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 0.1 7 EVQ4436A-R-00A – 45V, 6A, STEP-DOWN CONVERTER EVALUATION BOARD EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board. VIN = 12V, VOUT = 3.3V, L = 4.7μH, fSW = 470kHz, AAM, TA = 25°C, unless otherwise noted. Steady State Steady State IOUT = 0A, AAM IOUT = 0A, FCCM CH3: VPG 5V/div. CH3: VPG 5V/div. CH1: VSW 5V/div. CH2: VOUT/AC 20mV/div. CH1: VSW 5V/div. CH2: VOUT/AC 10mV/div. CH4: IL 1A/div. CH4: IL 1A/div. 40ms/div. 4μs/div. Steady State Start-Up through VIN IOUT = 6A IOUT = 0A, AAM CH3: VPG 5V/div. CH3: VIN 5V/div. CH1: VSW 5V/div. CH2: VOUT/AC 10mV/div. CH2: VOUT 1V/div. CH4: IL 1A/div. CH1: VSW 10V/div. CH4: IL 5A/div. 4μs/div. 1ms/div. Start-Up through VIN Start-Up through VIN IOUT = 0A, FCCM IOUT = 6A CH3: VIN 5V/div. CH3: VIN 5V/div. CH2: VOUT 1V/div. CH2: VOUT 1V/div. CH4: IL 5A/div. CH4: IL 2A/div. CH1: VSW 10V/div. CH1: VSW 10V/div. 1ms/div. 1ms/div. EVQ4436A-R-00A Rev. 1.0 MonolithicPower.com 12/21/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 8 EVQ4436A-R-00A – 45V, 6A, STEP-DOWN CONVERTER EVALUATION BOARD EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board. VIN = 12V, VOUT = 3.3V, L = 4.7μH, fSW = 470kHz, AAM, TA = 25°C, unless otherwise noted. Shutdown through VIN Shutdown through VIN IOUT = 0A, AAM IOUT = 0A, FCCM CH3: VIN 5V/div. CH3: VIN 5V/div. CH4: IL 1A/div. CH4: IL 2A/div. CH2: VOUT 1V/div. CH2: VOUT 1V/div. CH1: VSW 5V/div. CH1: VSW 10V/div. 10ms/div. 10ms/div. Shutdown through VIN Start-Up through EN IOUT = 6A IOUT = 0A, AAM CH3: VEN 2V/div. CH3: VIN 5V/div. CH2: VOUT 1V/div. CH2: VOUT 1V/div. CH4: IL 2A/div. CH4: IL 5A/div. CH1: VSW 10V/div. CH1: VSW 10V/div. 400µs/div. 1ms/div. Start-Up through EN Start-Up through EN IOUT = 0A, FCCM IOUT = 6A CH3: VEN 2V/div. CH3: VEN 2V/div. CH2: VOUT 1V/div. CH2: VOUT 1V/div. CH4: IL 2A/div. CH4: IL 5A/div. CH1: VSW 10V/div. CH1: VSW 10V/div. 1ms/div. 1ms/div. EVQ4436A-R-00A Rev. 1.0 MonolithicPower.com 12/21/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 9 EVQ4436A-R-00A – 45V, 6A, STEP-DOWN CONVERTER EVALUATION BOARD EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board. VIN = 12V, VOUT = 3.3V, L = 4.7μH, fSW = 470kHz, AAM, TA = 25°C, unless otherwise noted. Shutdown through EN Shutdown through EN IOUT = 0A, AAM IOUT = 0A, FCCM CH3: VEN 2V/div. CH3: VEN 2V/div. CH4: IL 1A/div. CH4: IL 1A/div. CH2: VOUT 1V/div. CH2: VOUT 1V/div. CH1: VSW 10V/div. CH1: VSW 5V/div. 100ms/div. 100ms/div. Shutdown through EN SCP Entry IOUT = 6A IOUT = 0A, AAM CH3: VEN 2V/div. CH2: VOUT 2V/div. CH3: VPG 5V/div. CH4: IL 5A/div. CH4: IL 10A/div. CH2: VOUT 1V/div. CH1: VSW 10V/div. CH1: VSW 10V/div. 100µs/div. 20ms/div. SCP Entry SCP Entry IOUT = 0A, FCCM IOUT = 6A CH2: VOUT 2V/div. CH2: VOUT 2V/div. CH3: VPG 5V/div. CH3: VPG 5V/div. CH4: IL 10A/div. CH4: IL 10A/div. CH1: VSW 10V/div. CH1: VSW 10V/div. 20ms/div. 20ms/div. EVQ4436A-R-00A Rev. 1.0 MonolithicPower.com 12/21/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 10 EVQ4436A-R-00A – 45V, 6A, STEP-DOWN CONVERTER EVALUATION BOARD EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board. VIN = 12V, VOUT = 3.3V, L = 4.7μH, fSW = 470kHz, AAM, TA = 25°C, unless otherwise noted. SCP Recovery SCP Recovery IOUT = 0A, AAM IOUT = 0A, FCCM CH2: VOUT 2V/div. CH2: VOUT 2V/div. CH3: VPG 5V/div. CH3: VPG 5V/div. CH4: IL 10A/div. CH4: IL 10A/div. CH1: VSW 10V/div. CH1: VSW 10V/div. 10ms/div. 10ms/div. SCP Recovery SCP Steady State IOUT = 6A CH2: VOUT 1V/div. CH2: VOUT 2V/div. CH3: VPG 5V/div. CH4: IL 5A/div. CH4: IL 10A/div. CH1: VSW 10V/div. CH1: VSW 10V/div. 10ms/div. 4ms/div. Load Transient SYNC Operation IOUT = 3A to 6A IOUT = 6A, SYNC frequency = 350kHz CH2: VOUTAC 200mV/div. CH3: SYNCIN 2V/div. CH2: VOUT 2V/div. CH1: VSW CH4: IOUT 2A/div. CH1: VSW 10V/div. 10V/div. CH4: IL 2A/div. 100µs/div. 2µs/div. EVQ4436A-R-00A Rev. 1.0 MonolithicPower.com 12/21/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 11 EVQ4436A-R-00A – 45V, 6A, STEP-DOWN CONVERTER EVALUATION BOARD EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board. VIN = 12V, VOUT = 3.3V, L = 4.7μH, fSW = 470kHz, AAM, TA = 25°C, unless otherwise noted. SYNC Operation SYNCO Operation IOUT = 6A, SYNC frequency = 530kHz IOUT = 6A, SYNC frequency = 350kHz CH3: SYNCIN 2V/div. CH3: SYNCO 2V/div. CH2: VOUT 2V/div. CH1: VSW CH2: VOUT 1V/div. CH4: IL 2A/div. CH1: VSW 5V/div. 10V/div. CH4: IL 2A/div. 1µs/div. 2µs/div. SYNCO Operation PG Start-Up through VIN IOUT = 6A, SYNC frequency = 530kHz IOUT = 0A CH3: SYNCO 2V/div. CH3: VIN 5V/div. CH2: VOUT 2V/div. CH2: VOUT 1V/div. CH4: VPG 2V/div. CH4: IL 2A/div. CH1: VSW 2V/div. CH1: VSW 10V/div. 1µs/div. 1ms/div. PG Start-Up through VIN PG Shutdown through VIN IOUT = 6A IOUT = 0A CH3: VIN 5V/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. 1ms/div. 20ms/div. EVQ4436A-R-00A Rev. 1.0 MonolithicPower.com 12/21/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 12 EVQ4436A-R-00A – 45V, 6A, STEP-DOWN CONVERTER EVALUATION BOARD EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board. VIN = 12V, VOUT = 3.3V, L = 4.7μH, fSW = 470kHz, AAM, TA = 25°C, unless otherwise noted. PG Shutdown through VIN PG Start-Up through EN IOUT = 6A IOUT = 0A 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. PG Start-Up through EN PG Shutdown through EN IOUT = 6A IOUT = 0A CH3: VEN 2V/div. CH3: VEN 2V/div. CH2: VOUT 2V/div. CH2: VOUT 2V/div. CH4: VPG 2V/div. CH4: VPG 2V/div. CH1: VSW 10V/div. CH1: VSW 5V/div. 1ms/div. 100ms/div. PG Shutdown through EN Low-Dropout Mode IOUT = 6A 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 CH4: VPG 2V/div. CH1: VSW 10V/div. 1V/div. CH2: VOUT 500mV/div. 1ms/div. 4µs/div. EVQ4436A-R-00A Rev. 1.0 MonolithicPower.com 12/21/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 13 EVQ4436A-R-00A – 45V, 6A, STEP-DOWN CONVERTER EVALUATION BOARD EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board. VIN = 12V, VOUT = 3.3V, L = 4.7μH, fSW = 470kHz, AAM, TA = 25°C, unless otherwise noted. Low-Dropout Mode Load Dump VIN = 3.3V, VOUT set to 3.3V, IOUT = 6A VIN = 12V to 36V, IOUT = 6A CH4: IL 2A/div. CH3: VIN 10V/div. CH2: VOUT 500mV/div. CH3: VIN 500mV/div. CH1: VSW 1V/div. CH2: VOUT 2V/div. CH4: IL 5A/div. CH1: VSW 50V/div. 4µs/div. 100ms/div. Cold Crank VIN Ramp Up and Down VIN = 12V to 3.3V to 5V, IOUT = 6A IOUT = 0.1A CH3: VIN 5V/div. CH2: VOUT 1V/div. CH3: VIN 1V/div. CH4: IL 2A/div. CH1: VSW 5V/div. CH2: VOUT 1V/div. 4ms/div. 1s/div. VIN Ramp Down and Up VIN Ramp Down and Up IOUT = 1mA IOUT = 6A 4.5V CH3: VIN 10V/div. 4.5V CH3: VIN 10V/div. CH2: VOUT 2V/div. CH2: VOUT 2V/div. CH4: IL 2A/div. CH1: VSW 20V/div. CH4: IL 5A/div. CH1: VSW 20V/div. 10s/div. 10s/div. EVQ4436A-R-00A Rev. 1.0 MonolithicPower.com 12/21/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 14 EVQ4436A-R-00A – 45V, 6A, STEP-DOWN CONVERTER EVALUATION BOARD PCB LAYOUT Figure 2: Top Silk Layer and Top Layer Figure 3: Mid-Layer 1 Figure 4: Mid-Layer 2 Figure 5: Bottom Silk Layer and Bottom Layer EVQ4436A-R-00A Rev. 1.0 MonolithicPower.com 12/21/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 15 EVQ4436A-R-00A – 45V, 6A, STEP-DOWN CONVERTER EVALUATION BOARD REVISION HISTORY Revision # 1.0 Revision Date 12/21/2020 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. EVQ4436A-R-00A Rev. 1.0 MonolithicPower.com 12/21/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 16