EVM3808-LE-00A

EVM3808-LE-00A 5.5V, 3A, Synchronous Step-Down Module Evaluation Board, AEC-Q100 Qualified DESCRIPTION The EVM3808-LE-00A evaluation board is designed to demonstrate the capabilities of the MPM3808, an easy-to-use, fully integrated, synchronous step-down power module with a built-in inductor and power MOSFETs. It can achieve up to 3A of continuous output current (IOUT), with excellent load and line regulation. The MPM3808 is ideal for a wide range of applications, including high-performance digital signal processors (DSPs), advanced driverassistance system (ADAS) sensors, portable and mobile devices, and other low-power systems with size constraints. The EVM3808-LE-00A is fully assembled and tested. The MPM3808 is available in a small QFN-15 (3mmx4mmx1.6mm) package with wettable flanks, and requires a minimal number of readily available, standard external components. The constant-on-time (COT) control scheme provides fast transient response and eases loop stabilization. Fault protections include cycle-bycycle current limiting and thermal shutdown. An open-drain power good (PG) signal indicates when the output voltage (VOUT) exceeds 90% of its nominal voltage. PERFORMANCE SUMMARY Specifications are at TA = 25°C, unless otherwise noted. Parameters Input voltage (VIN) range Output voltage (VOUT) Maximum output current (IOUT) Typical efficiency Peak efficiency Switching frequency (fSW) Conditions VIN = 2.5V to 5.5V, IOUT = 0A to 3A VIN = 2.5V to 5.5V VIN = 3.3V, VOUT = 1.2V, IOUT = 3A VIN = 2.5V, VOUT = 1.2V, IOUT = 300mA Value 2.5V to 5.5V VOUT = 1.2V 3A 74.98% 90.29% 2.4MHz EVM3808-LE-00A EVALUATION BOARD LxWxH (6.3cmx6.3cmx1cm) Board Number MPS IC Number EVM3808-LE-00A MPM3808GLE-AEC1 EVM3808-LE-00A Rev. 1.0 MonolithicPower.com 8/5/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 1 EVM3808-LE-00A – 5.5V, 3A, SYNC BUCK MODULE EVALUATION BOARD, AEC-Q100 QUICK START GUIDE 1. Preset the power supply (VIN) between 2.5V and 5.5V, then turn the power supply off. 2. Set the load current between 0A and 3A. Electronic loads represent a negative impedance to the regulator, and setting a current too high can trigger over-current protection (OCP). 3. If longer cables (>0.5m total) are used between the source and the evaluation board, install a damping capacitor at the input terminals, especially when VIN ≥ 5V. 4. Connect the power supply terminals to: a. Positive (+): VIN b. Negative (-): GND 5. Connect the load terminals to: a. Positive (+): VOUT b. Negative (-): GND 6. After making the connections, turn the power supply on. 7. To use the enable function, apply a digital input to the EN pin. Drive EN above 0.9V to turn the regulator on; drive EN below 0.65V to turn the regulator off. If the enable function is not used, connect EN directly to VIN. 8. To use the power good (PG) function, connect a probe between the PG and GND pins. PG pulls to GND before the soft start (SS) completes. If VFB rises to be 90% of VREF, PG pulls high through a 100kΩ resistor connected to VIN. If VFB drops to 85% of VREF, the PG pin’s voltage (VPG) pulls to GND to indicate an output failure. PG can also be connected to an external voltage source. 9. The external resistor divider sets the output voltage (VOUT). VOUT MPM3808 R1 FB R2 Figure 1: Feedback Divider Network with Adjustable Output R1 is selected to be 100kΩ. Then R2 can be calculated with Equation (1): R2  R1 VOUT 1 0.6 (1) Refer to the Application Information section in the MPM3808 datasheet to recalculate the output capacitance when VOUT changes. EVM3808-LE-00A Rev. 1.0 MonolithicPower.com 8/5/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 2 EVM3808-LE-00A – 5.5V, 3A, SYNC BUCK MODULE EVALUATION BOARD, AEC-Q100 10. Figure 2 shows the measurement equipment set-up. PG EN GND R3 R1 R2 R6 C4 R5 C5 R4 C3 Monolithic Power Systems MPM3808 Demo Board EVM3808-LE-00A www.monolithicpower.com VIN = 2.5V to 5.5V VOUT C1B C1D + Load C2C C2A C1A C1C U1 GND VOUT = 1.2V C2D C2B VIN 0A to 3A V - GND Figure 2: Measurement Equipment Set-Up EVM3808-LE-00A Rev. 1.0 MonolithicPower.com 8/5/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 3 EVM3808-LE-00A – 5.5V, 3A, SYNC BUCK MODULE EVALUATION BOARD, AEC-Q100 EVALUATION BOARD SCHEMATIC VIN 2.5V to 5.5V CIN1 22µF 3 C1A 10µF C1B 10µF C1C 0.1µF C1D NS VIN SW R1 100kΩ GND EN 0.65V 0.9V OUT 12 MPM3808 R2 100kΩ R3 100kΩ OUT_S EN FB 4, 5, 6 7, 8, 9 14 1.2V/3A C5 Short 1 Typ 0.6V R6 100kΩ 2 PG 13 C3 2.2nF C4 NS R4 10Ω C2A NS C2B 22µF 10V 1206 C2C NS VOUT C2D NS GND R5 100kΩ PG SS VOUT (V) R1 (kΩ) R2 (kΩ) 1 30.9 (1%) 47 (1%) 1.2 100 (1%) 100 (1%) 1.8 36 (1%) 18 (1%) 2.5 51 (1%) 16 (1%) 3.3 68 (1%) 15 (1%) GND 10 Figure 3: Evaluation Board Schematic PACKAGE REFERENCE TOP VIEW FB 1 PG 2 OUT_S SS 14 13 DNC 12 EN 11 GND 15 VIN 3 10 GND SW 4 9 OUT SW 5 8 OUT SW 6 7 OUT QFN-15 (3mmx4mmx1.6mm) EVM3808-LE-00A Rev. 1.0 MonolithicPower.com 8/5/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 4 EVM3808-LE-00A – 5.5V, 3A, SYNC BUCK MODULE EVALUATION BOARD, AEC-Q100 EVM3808-LE-00A BILL OF MATERIALS Qty Value 1 0 Ref C1D, C2A, C2C, C2D CIN1 C4 2 C1A, C1B 10µF 1 C1C 0.1µF 1 C2B 22µF 1 C3 2.2nF 1 0Ω 1 C5 R1, R2, R3, R5, R6 R4 1 U1 0 5 Description Package Manufacturer Manufacturer PN SMD Jianghai VTD-63V22 1206 TDK C3216X7R1V106K 0603 TDK C1608X7R1C104K 1206 Murata GRM32ER71A226KE20L NS 22µF NS Electrical capacitor, 63V Ceramic capacitor, 35V, X7R Ceramic capacitor,16V, X7R Ceramic capacitor, 10V, X7R Ceramic capacitor, 50V, X7R Film resistor, 5% 0603 TDK C1608X7R1H222K 0603 Yageo RC0603JR-070RL 100kΩ Film resistor, 1% 0603 Yageo RC0603FR-07100KL 10Ω Film resistor, 1% 0603 QFN-15 (3mmx 4mmx 1.6mm) Yageo RC0603FR-0710RL MPS MPM3808GLE-AEC1 5.5V, 3A, synchronous MPM3808 step-down module, AEC-Q100 EVM3808-LE-00A Rev. 1.0 MonolithicPower.com 8/5/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 5 EVM3808-LE-00A – 5.5V, 3A, SYNC BUCK MODULE EVALUATION BOARD, AEC-Q100 EVB TEST RESULTS Performance curves and waveforms are tested on the evaluation board. VIN = 3.3V, VOUT = 1.2V, TA = 25°C, unless otherwise noted. Power Loss vs. Load Current Efficiency vs. Load Current VOUT = 1.2V 90 80 70 60 50 Vin=2.5V Vin=3.3V Vin=5.5V 40 30 VOUT = 1.2V 0.005 POWER LOSS (W) EFFICIENCY (%) 100 Vin=2.5V Vin=3.3V Vin=5.5V 0.004 0.003 0.002 0.001 0.000 20 0.1 1 LOAD CURRENT (mA) 0.1 10 95 POWER LOSS (W) EFFICIENCY (%) VOUT = 1.2V 90 85 80 75 Vin=2.5V Vin=3.3V Vin=5.5V 70 65 60 10 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 POWER LOSS (W) EFFICIENCY (%) 0.005 80 70 60 Vin=2.5V Vin=3.3V Vin=5.5V 30 20 0.1 1 LOAD CURRENT (mA) 100 1000 3000 Power Loss vs. Load Current 90 40 Vin=2.5V Vin=3.3V Vin=5.5V LOAD CURRENT (mA) VOUT = 1.8V 50 VOUT = 1.2V 10 100 1000 3000 LOAD CURRENT (mA) Efficiency vs. Load Current 100 10 Power Loss vs. Load Current Efficiency vs. Load Current 100 1 LOAD CURRENT (mA) 10 VOUT = 1.8V 0.004 Vin=2.5V Vin=3.3V Vin=5.5V 0.003 0.002 0.001 0.000 0.1 1 LOAD CURRENT (mA) EVM3808-LE-00A Rev. 1.0 MonolithicPower.com 8/5/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 10 6 EVM3808-LE-00A – 5.5V, 3A, SYNC BUCK MODULE EVALUATION BOARD, AEC-Q100 EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board. VIN = 3.3V, VOUT = 1.2V, TA = 25°C, unless otherwise noted. Power Loss vs. Load Current Efficiency vs. Load Current VOUT = 1.8V 90 80 Vin=2.5V Vin=3.3V Vin=5.5V 70 VOUT = 1.8V 1.6 POWER LOSS (W) EFFICIENCY (%) 100 1.4 Vin=2.5V Vin=3.3V Vin=5.5V 1.2 1.0 0.8 0.6 0.4 0.2 0.0 60 10 10 100 1000 3000 LOAD CURRENT (mA) 40 Case Temperature Rise VOUT = 1.8V 35 Vin=3.3V 30 Vin=5V 25 20 15 10 5 0 0.0 0.5 1.0 1.5 2.0 LOAD CURRENT (A) 2.5 3.0 CASE TEMPERATURE RISE (°C) CASE TEMPERATURE RISE (°C) Case Temperature Rise 35 Vin=3.3V 25 Vin=5V 20 15 10 5 0 0.3 Vin=2.5V Vin=3V Vin=3.3V Vin=5V Vin=5.5V 10 100 LOAD CURRENT (mA) 1000 3000 LINE REGULATION (%) LOAD REGULATION (%) 0.0 0.5 1.0 1.5 2.0 LOAD CURRENT (A) 2.5 3.0 Line Regulation VOUT = 1.2V 1 VOUT = 1.2V 30 Load Regulation 0.5 0.4 0.3 0.2 0.1 0.0 -0.1 -0.2 -0.3 -0.4 -0.5 100 1000 3000 LOAD CURRENT (mA) VOUT = 1.2V 0.2 0.1 0.0 Io=0.1A -0.1 Io=1.5A -0.2 Io=3A -0.3 2.5 3.0 3.5 4.0 4.5 5.0 INPUT VOLTAGE (V) EVM3808-LE-00A Rev. 1.0 MonolithicPower.com 8/5/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 5.5 7 EVM3808-LE-00A – 5.5V, 3A, SYNC BUCK MODULE EVALUATION BOARD, AEC-Q100 EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board. VIN = 3.3V, VOUT = 1.2V, TA = 25°C, unless otherwise noted. Thermal Performance Thermal Performance IOUT = 1.5A, no forced airflow, TCASE = 35.2°C IOUT = 3A, no forced airflow, TCASE = 55.6°C EVM3808-LE-00A Rev. 1.0 MonolithicPower.com 8/5/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 8 EVM3808-LE-00A – 5.5V, 3A, SYNC BUCK MODULE EVALUATION BOARD, AEC-Q100 EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board. VIN = 3.3V, VOUT = 1.2V, TA = 25°C, unless otherwise noted. Steady State Steady State IOUT = 0A IOUT = 3A CH2: VOUT/AC CH3: VIN CH2: VOUT/AC CH3: VIN CH4: IL CH4: IL CH1: VSW CH1: VSW Start-Up through VIN Start-Up through VIN IOUT = 0A IOUT = 3A CH3: VIN CH3: VIN CH2: VOUT CH2: VOUT CH4: IL CH4: IL CH1: VSW CH1: VSW CH3: VIN CH2: VOUT Shutdown through VIN Shutdown through VIN IOUT = 0A IOUT = 3A CH3: VIN CH2: VOUT CH4: IL CH4: IL CH1: VSW CH1: VSW EVM3808-LE-00A Rev. 1.0 MonolithicPower.com 8/5/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 9 EVM3808-LE-00A – 5.5V, 3A, SYNC BUCK MODULE EVALUATION BOARD, AEC-Q100 EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board. VIN = 3.3V, VOUT = 1.2V, TA = 25°C, unless otherwise noted. Start-Up through EN Start-Up through EN IOUT = 0A IOUT = 3A CH3: VEN CH3: VEN CH2: VOUT CH2: VOUT CH4: IL CH4: IL CH1: VSW CH1: VSW Shutdown through EN Shutdown through EN IOUT = 0A IOUT = 3A CH3: VEN CH3: VEN CH2: VOUT CH2: VOUT CH4: IL CH4: IL CH1: VSW CH1: VSW SCP Entry SCP Entry IOUT = 0A IOUT = 3A CH3: VPG CH3: VPG CH2: VOUT CH2: VOUT CH4: IL CH4: IL CH1: VSW CH1: VSW EVM3808-LE-00A Rev. 1.0 MonolithicPower.com 8/5/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 10 EVM3808-LE-00A – 5.5V, 3A, SYNC BUCK MODULE EVALUATION BOARD, AEC-Q100 EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board. VIN = 3.3V, VOUT = 1.2V, TA = 25°C, unless otherwise noted. SCP Recovery SCP Recovery IOUT = 0A IOUT = 3A CH2: VOUT CH2: VOUT CH3: VPG CH3: VPG CH4: IL CH4: IL CH1: VSW CH1: VSW PG Start-Up through VIN Short Circuit Protection IOUT = 3A CH2: VOUT CH3: VIN CH3: VPG CH2: VOUT CH4: IL CH4: VPG CH1: VSW CH3: VIN CH2: VOUT CH1: VSW PG Shutdown through VIN PG Start-Up through EN IOUT = 3A IOUT = 3A CH3: VEN CH2: VOUT CH4: VPG CH4: VPG CH1: VSW CH1: VSW EVM3808-LE-00A Rev. 1.0 MonolithicPower.com 8/5/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 11 EVM3808-LE-00A – 5.5V, 3A, SYNC BUCK MODULE EVALUATION BOARD, AEC-Q100 EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board. VIN = 3.3V, VOUT = 1.2V, TA = 25°C, unless otherwise noted. PG Shutdown through EN Load Transient IOUT = 3A IOUT = 0A to 1.5A, 1A/µs CH2: VOUT/AC CH3: VEN CH2: VOUT CH4: VPG CH4: IOUT CH1: VSW Load Transient IOUT = 1.5A to 3A, 1A/µs CH2: VOUT/AC CH4: IOUT EVM3808-LE-00A Rev. 1.0 MonolithicPower.com 8/5/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 12 EVM3808-LE-00A – 5.5V, 3A, SYNC BUCK MODULE EVALUATION BOARD, AEC-Q100 PCB LAYOUT (1) Figure 3: Top Silk and Top Layer Figure 4: Mid-Layer 1 Figure 5: Mid-Layer 2 Figure 6: Bottom Layer and Bottom Silk Note: 1) The copper thickness of all layers is 2oz. EVM3808-LE-00A Rev. 1.0 MonolithicPower.com 8/5/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 13 EVM3808-LE-00A – 5.5V, 3A, SYNC BUCK MODULE EVALUATION BOARD, AEC-Q100 REVISION HISTORY Revision # 1.0 Revision Date 8/5/2022 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. EVM3808-LE-00A Rev. 0.8 MonolithicPower.com 8/5/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 14