EVQ4430-L-00A

EVQ4430-L-00A 36V, 3.5A, Low Quiescent Current, Synchronous Step-Down Converter Evaluation Board DESCRIPTION FEATURES The EVQ4430-L-00A evaluation board is designed to demonstrate the capabilities of the MP4430 and the MPQ4430.  The MPQ4430 is a frequency-configurable (350kHz to 2.5MHz), synchronous, step-down switching regulator with integrated, internal high-side and low-side power MOSFETs. It provides up to 3.5A of highly efficient output current with current mode control for fast loop response. The MPQ4430 employs advanced asynchronous mode (AAM) to achieve high efficiency under light-load conditions by scaling down the switching frequency. This reduces the switching and gate driving losses. The EVQ4430-L-00A is a fully assembled and tested evaluation board. It generates 5V of output voltage at load currents up to 3.5A, from a 5V to 36V input voltage range. The MPQ4430 is available in a QFN-16 (3mmx4mm) package. ELECTRICAL SPECIFICATIONS Parameter Symbol Value Units Input voltage Output voltage Output current VIN, VEMI VOUT IOUT 5 to 36 5 3.5 V V A                 Wide 5V to 36V Operating Input Voltage Range 3.5A of Continuous Output Current 1μA Low Shutdown Mode Current 10μA Sleep Mode Quiescent Current Internal 90mΩ High-Side and 40mΩ LowSide MOSFETs 350kHz to 2.5MHz Configurable Switching Frequency Synchronize to External Clock, Selectable In-Phase or 180° Out-of-Phase Power Good Indicator Configurable Soft-Start Time 80ns Minimum On Time Selectable FCCM and AAM Low-Dropout Mode Over-Current Protection with Valley Current Detection and Hiccup Mode Thermal Shutdown Available in a QFN-16 (3mmx4mm) Package Available with Wettable Flanks AEC-Q100 Grade-1 APPLICATIONS   Automotive Systems 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. EVQ4430-L-00A Rev. 1.2 MonolithicPower.com 5/27/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 1 EVQ4430-L-00A – 36V, 3.5A, STEP-DOWN CONVERTER EVALUATION BOARD EVQ4430-L-00A EVALUATION BOARD Efficiency vs. Load Current VOUT = 5V, AAM 100% EFFICIENCY 95% 90% 85% 80% 75% LxWxH (8.3cmx8.3cmx1.3cm) Board Number MPS IC Number EVQ4430-L-00A MP4430GL, MPQ4430GL VIN=8V VIN=12V VIN=24V VIN=36V 70% 65% 1 10 100 1000 LOAD CURRENT (mA) EVQ4430-L-00A Rev. 1.2 MonolithicPower.com 5/27/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 2 EVQ4430-L-00A – 36V, 3.5A, STEP-DOWN CONVERTER EVALUATION BOARD QUICK START GUIDE 1. Preset the power supply (VIN) to be between 5V and 36V. Note that electronic loads represent a negative impedance to the regulator. If the current is set too high, hiccup mode may be triggered. 2. Turn the power supply off. If longer cables (>0.5m total) are used between the source and the evaluation board, a damping capacitor should be installed at the input terminals, especially if VIN ≥ 24V. 3. Connect the power supply terminals to: a. Positive (+): VEMI b. Negative (-): GND 4. Connect the load terminals to: a. Positive (+): VOUT b. Negative (-): GND 5. Turn the power supply on after making the connections. 6. To use the enable function, apply a digital input to the EN pin. Drive EN above 1.05V to turn the device on; drive EN below 0.93V to turn it off. 7. The IC’s oscillating frequency can be configured by an external frequency resistor (RFREQ). RFREQ can be estimated with Equation (1): RFREQ (kΩ)  170000 fSW 1.11(kHz) (1) 8. To use the sync function, apply a 350kHz to 2.5MHz clock to the SYNC pin to synchronize the internal oscillator frequency to the external clock. The external clock should be at least 250kHz above the frequency set by RFREQ. The SYNC pin can also select forced continuous conduction mode (FCCM) or advanced asynchronous mode (AAM). Drive SYNC high before the chip starts up to choose FCCM; drive SYNC low (or leave it floating) to select AAM. 9. 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 about 40kΩ. RFB2 can be calculated with Equation (2): R FB2  R FB1 VOUT 1 0.8V (2) Figure 1 shows the resistor divider set-up. MP/MPQ4430 FB RFB1 VOUT RFB2 Figure 1: Resistor Divider Set-Up EVQ4430-L-00A Rev. 1.2 MonolithicPower.com 5/27/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 3 EVQ4430-L-00A – 36V, 3.5A, STEP-DOWN CONVERTER EVALUATION BOARD Table 1 lists the recommended feedback resistor values for common output voltages. Table 1: Recommended Resistor Dividers VOUT (V) 1.8 RFB1 (kΩ) 41.2 (1%) RFB2 (kΩ) 33 (1%) 2.5 41.2 (1%) 19.6 (1%) 3.3 5 12 41.2 (1%) 41.2 (1%) 41.2 (1%) 13 (1%) 7.68 (1%) 2.94 (1%) EVQ4430-L-00A Rev. 1.2 MonolithicPower.com 5/27/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 4 EVQ4430-L-00A – 36V, 3.5A, STEP-DOWN CONVERTER EVALUATION BOARD EVALUATION BOARD SCHEMATIC R5 for EMC R5 CIN3 NS CIN4 NS CIN5 1uF GND CIN6 NS CIN9 22µF 63V C1A 10µF C1B 10µF 1210 50V 1210 50V C1D 0.1µF 0603 50V C1C 0.1µF 0603 50V Input EMI Filter 0.12 V Hyst SW C4 0.1µF 3,10 R2 NS 249kΩ 350kHz 169kΩ 500kHz 82kΩ 1MHz R7 41.2kΩ SYNC R4 191kΩ 2MHz PG 14 SS 4,9 C3 4.7nF GND VOUT (V) R7 (kΩ) R8 (kΩ) 1.8 41.2 (1%) 33 (1%) 2.5 41.2 (1%) 19.6 (1%) 3.3 41.2 (1%) 13 (1%) 5 41.2 (1%) 7.68 (1%) 12 41.2 (1%) 2.94 (1%) Connect to 5V to 18V, or float if not using C7 0.1µF 16 FRE Q Freq = 450kHz VOUT C2B 22µF C2C 1210 NS 25V R3 10Ω 1 PHASE 2.5MHz 5V/3.5A C2A 22µF 1210 25V R8 7.68kΩ C5 10pF BIAS 8 fSW L3 4.7µH FB 15 EN 6 R4 27kΩ BST MPQ4430GL 5 SYNC 36.5kΩ IN R1 100kΩ 1.05V EN 20Ω 11 U1 2 AGND CIN2 NS CIN7 CIN8 4.7µF 4.7µF 1210 1210 50V 50V CIN9 is for damping the input C and L PGND CIN1 NS L2 4.7µH 7 High if VOUT within ±10% PG R6 100kΩ VCC 12 C6 1µF 13 L1 1µH 5V to 36V VEMI 1 R9 0Ω 2 SS float: 700μs CSS = 4.7nF:700μs 10nF: 1.1ms 22nF: 2.42ms tSS = CSS (nF) x 0.11ms C8 NS JP1 NS U2 1 GND VCC 8 R10 1kΩ ICM7555IBAZ 2 R11 NS 3 C9 1µF 4 TRIG DIS OUT THRS RST CV C10 6.8nF 7 6 R12 11kΩ 5 C11 100nF Figure 2: Evaluation Board Schematic PACKAGE REFERENCE TOP VIEW FREQ 16 FB SS 15 14 AGND 13 PHASE 1 12 VCC VIN 2 11 BST SW 3 10 SW PGND 4 9 5 EN 6 SYNC 7 PG PGND 8 BIAS QFN-16 (3mmx4mm) EVQ4430-L-00A Rev. 1.2 MonolithicPower.com 5/27/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 5 EVQ4430-L-00A – 36V, 3.5A, STEP-DOWN CONVERTER EVALUATION BOARD EVQ4430-L-00A BILL OF MATERIALS Qty Ref Value 1 CIN5 1μF 2 CIN7, CIN8 4.7μF 1 CIN9 22μF 2 C1A, C1B 10μF 2 C1C, C1D 0.1μF 2 C2A, C2B 22μF 1 C3 4.7nF 3 C4, C7, C11 0.1μF 1 C5 10pF 2 C6, C9 1μF 1 C10 6.8nF Description Ceramic capacitor, 50V, X7R Ceramic capacitor, 50V, X7R Electrolytic capacitor, 63V Ceramic capacitor, 50V, X7R Ceramic capacitor, 50V, X7R Ceramic capacitor, 25V, X7R Ceramic capacitor, 50V, X7R Ceramic capacitor, 16V, X7R Ceramic capacitor, 50V, C0G Ceramic capacitor, 16V, X7R Ceramic capacitor, 50V, X7R Package Manufacturer 0805 Murata 1210 Murata SMD Jianghai 1210 Murata 0603 Murata 1210 Murata 0603 TDK 0603 Murata 0603 Murata 0603 Murata 0603 TDK SMD Cyntec SMD Cyntec 2 CIN1, CIN2, CIN3, CIN4, CIN6, C2C, C8 JP1, JP2 1 L1 1μH 1 L2 4.7μH 1 L3 4.7μH Inductor, DCR = 31.5Ω, 6A SMD Cyntec 2 R1, R6 100kΩ Film resistor, 1% 0603 Yageo 1 R3 10Ω Film resistor, 1% 0603 Yageo 1 R4 191kΩ Film resistor, 1% 0603 Yageo 1 R5 20Ω Film resistor, 1% 0603 Yageo 1 R7 41.2kΩ Film resistor, 1% 0603 Yageo 1 1 R8 R10 7.68kΩ 1kΩ Film resistor, 1% Film resistor, 1% 0603 0603 Yageo Yageo 7 Manufacturer P/N GRM21BR71H105K A12L GRM32ER71H475K A88L VTD-63V22 GRM32ER71H106K A12L GRM188R71H104K A93D GRM32ER71H226K E15L C1608X7R1H472K GRM188R71C104K A01D GRM1885C1H100J A01 GRM188R71C105K A12D C1608X7R1H682K NS NS Inductor, DCR = 41mΩ, 3.1A Inductor, DCR = 48.6mΩ, 3.7A VCTA20161B1R0MS6-89 VCHA042A4R7MS6-89 VCMT063T4R7MN5-89 RC0603FR07100KL RC0603FR-0710RL RC0603FR07191KL RC0603FR-0720RL RC0603FR0741K2L RC0603FR-0713KL RC0603FR-071KL EVQ4430-L-00A Rev. 1.2 MonolithicPower.com 5/27/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 6 EVQ4430-L-00A – 36V, 3.5A, STEP-DOWN CONVERTER EVALUATION BOARD EVQ4430-L-00A BILL OF MATERIALS (continued) Qty 1 1 2 1 4 5 1 Ref Value R9 0Ω R12 11kΩ R2, R11 NS U2 18V VEMI, GND, Test point VOUT, GND EN, GND, SYNC, GND, Test point PG U1 Description Package Manufacturer Manufacturer P/N Film resistor, 1% Film resistor, 1% 0603 0603 Yageo Yageo RC0603FR-070RL RC0603FR-0711KL CMOS RC timer SOP-8 Intersil ICM7555IBAZ 2.0 golden pin DIP Any 1.0 golden pin DIP Any QFN-16 (3mmx 4mm) MPS MPQ4430 Step-down converter MPQ4430GL EVQ4430-L-00A Rev. 1.2 MonolithicPower.com 5/27/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 7 EVQ4430-L-00A – 36V, 3.5A, STEP-DOWN CONVERTER EVALUATION BOARD EVB TEST RESULTS Performance curves and waveforms are tested on the evaluation board. VIN = 12V, VOUT = 5V, L = 4.7µH, TA = 25°C, unless otherwise noted. Efficiency vs. Load Current Efficiency vs. Load Current VOUT = 5V, AAM VOUT = 5V, CCM 100% 100% 90% 80% 90% 70% 85% 60% EFFICIENCY EFFICIENCY 95% 80% 75% VIN=8V VIN=12V VIN=24V VIN=36V 70% 65% 1 10 100 LOAD CURRENT (mA) 1000 50% 40% 30% VIN=8V VIN=12V VIN=24V VIN=36V 20% 10% 0% 1 10 100 1000 LOAD CURRENT (mA) EVQ4430-L-00A Rev. 1.2 MonolithicPower.com 5/27/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 8 EVQ4430-L-00A – 36V, 3.5A, STEP-DOWN CONVERTER EVALUATION BOARD EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board. VIN = 12V, VOUT = 5V, L = 4.7µH, TA = 25°C, unless otherwise noted. Steady State Steady State IOUT = 0A, AAM IOUT = 0A, CCM CH3: VPG CH3: VPG CH1: VSW CH1: VSW CH2: VOUT/AC CH2: VOUT/AC CH4: IL CH4: IL Steady State Start-Up IOUT = 3.5A IOUT = 0A, AAM CH3: VPG CH3: VIN CH1: VSW CH2: VOUT/AC CH1: VSW CH2: VOUT CH4: IL CH4: IL Start-Up Start-Up IOUT = 0A, CCM IOUT = 3.5A CH3: VIN CH3: VIN CH1: VSW CH1: VSW CH2: VOUT CH2: VOUT CH4: IL CH4: IL EVQ4430-L-00A Rev. 1.2 MonolithicPower.com 5/27/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 9 EVQ4430-L-00A – 36V, 3.5A, STEP-DOWN CONVERTER EVALUATION BOARD EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board. VIN = 12V, VOUT = 5V, L = 4.7µH, TA = 25°C, unless otherwise noted. Shutdown Shutdown IOUT = 0A, AAM IOUT = 0A, CCM CH3: VIN CH3: VIN CH1: VSW CH1: VSW CH2: VOUT CH2: VOUT CH4: IL CH4: IL Shutdown En On IOUT = 3.5A IOUT = 0A, AAM CH3: VEN CH3: VIN CH1: VSW CH1: VSW CH2: VOUT CH2: VOUT CH4: IL CH4: IL En On En On IOUT = 0A, CCM IOUT = 3.5A CH3: VEN CH3: VEN CH1: VSW CH1: VSW CH2: VOUT CH2: VOUT CH4: IL CH4: IL EVQ4430-L-00A Rev. 1.2 MonolithicPower.com 5/27/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 10 EVQ4430-L-00A – 36V, 3.5A, STEP-DOWN CONVERTER EVALUATION BOARD EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board. VIN = 12V, VOUT = 5V, L = 4.7µH, TA = 25°C, unless otherwise noted. En Off En Off IOUT = 0A, AAM IOUT = 0A, CCM CH3: VEN CH3: VEN CH1: VSW CH1: VSW CH2: VOUT CH2: VOUT CH4: IL CH4: IL En Off SCP Entry IOUT = 3.5A IOUT = 0A, AAM CH3: VPG CH3: VEN CH1: VSW CH1: VSW CH2: VOUT CH2: VOUT CH4: IL CH4: IL SCP Entry SCP Entry IOUT = 0A, CCM IOUT = 3.5A CH3: VPG CH3: VPG CH1: VSW CH1: VSW CH2: VOUT CH2: VOUT CH4: IL CH4: IL EVQ4430-L-00A Rev. 1.2 MonolithicPower.com 5/27/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 11 EVQ4430-L-00A – 36V, 3.5A, STEP-DOWN CONVERTER EVALUATION BOARD EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board. VIN = 12V, VOUT = 5V, L = 4.7µH, TA = 25°C, unless otherwise noted. SCP Recovery SCP Steady State IOUT = 0A, AAM CH3: VPG CH3: VPG CH1: VSW CH1: VSW CH2: VOUT CH2: VOUT CH4: IL CH4: IL SCP Recovery SCP Recovery IOUT = 0A, CCM IOUT = 3.5A CH3: VPG CH3: VPG CH1: VSW CH1: VSW CH2: VOUT CH2: VOUT CH4: IL CH4: IL Load Transient Cold-Crank Conditions IOUT = 1.5A to 3.5A VIN = 12V to 3.3V to 5V, IOUT = 0A CH3: VPG CH2: VOUT CH1: VSW CH2: VOUT CH4: IL CH4: IL EVQ4430-L-00A Rev. 1.2 MonolithicPower.com 5/27/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 12 EVQ4430-L-00A – 36V, 3.5A, STEP-DOWN CONVERTER EVALUATION BOARD EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board. VIN = 12V, VOUT = 5V, L = 4.7µH, TA = 25°C, unless otherwise noted. VIN Ramp Down and Up Cold-Crank Conditions VIN = 18V to 3.5V to 0V to 3.5V to 18V, IOUT = 0A VIN = 12V to 3.3V to 5V, IOUT = 3.5A CH3: VPG CH3: VPG CH1: VSW CH2: VOUT CH1: VSW CH2: VOUT CH4: IL CH4: IL VIN Ramp Down and Up Load Dump VIN = 18V to 4.5V to 0V to 4.5V to 18V, IOUT = 3.5A CH3: VPG CH1: VSW CH2: VOUT VIN = 12V to 36V to 12V, IOUT = 3.5A CH3: VPG CH1: VSW CH4: IL CH4: IL CH2: VOUT EVQ4430-L-00A Rev. 1.2 MonolithicPower.com 5/27/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 13 EVQ4430-L-00A – 36V, 3.5A, STEP-DOWN CONVERTER EVALUATION BOARD PCB LAYOUT Figure 3: Top Silk Layer Figure 4: Inner Layer 1 Figure 5: Inner Layer 2 Figure 6: Bottom Layer EVQ4430-L-00A Rev. 1.2 MonolithicPower.com 5/27/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 14 EVQ4430-L-00A – 36V, 3.5A, STEP-DOWN CONVERTER EVALUATION BOARD REVISION HISTORY Revision # 1.0 1.2 Revision Date 5/28/2019 5/27/2021 Description Pages Updated Initial release Grammar updates All 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. EVQ4430-L-00A Rev. 1.2 MonolithicPower.com 5/27/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 15