EVQ4572-QB-00A

EVQ4572-QB-00A 60V, 2A, High-Efficiency, Synchronous Buck Converter Evaluation Board DESCRIPTION FEATURES The EVQ4572-QB-00A evaluation board is designed to demonstrate the capabilities of the MPQ4572/MPQ4572-AEC1.  The MPQ4572/MPQ4572-AEC1 is a fully integrated, fixed-frequency, synchronous stepdown converter. It can achieve up to 2A of continuous output current with peak current control for excellent transient response. The MPQ4572/MPQ4572-AEC1 employs advanced asynchronous mode (AAM) which helps to achieve high efficiency under light-load conditions by scaling down the switching frequency to reduce the switching and gate driving losses. The EVQ4572-QB-00A is a fully assembled and tested evaluation board. It generates a 5V output voltage and load currents up to 2A from a 5V to 60V input range. ELECTRICAL SPECIFICATIONS Parameter Input voltage Output voltage Output current Wide 5V to 60V Operating Input Range 2A Continuous Output Current High-Efficiency Synchronous Mode Control 250mΩ/45mΩ Internal Power MOSFETs Configurable Frequency Up to 2.2MHz 180° Out-of-Phase SYNCO Clock 40μA Quiescent Current Low Shutdown Mode Current: 2μA Selectable AAM or Forced CCM Operation under Light-Load Conditions Internal 0.45ms Soft Start Remote EN Control Power Good Indicator Low-Dropout Mode Over-Current Protection (OCP) Thermal Shutdown Available in a QFN-12 (2.5mmx3mm) Package Available in AEC-Q100 Grade 1                APPLICATIONS Symbol Value Units VEMI VOUT IOUT 5 to 60 5 2 V V A   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. EVQ4572-L-00A EVALUATION BOARD Efficiency vs. Load Current vs. Power Loss VOUT = 5V, fSW = 400kHz, L = 15μH, AAM EFFICIENCY (%) 90 (LxWxH) 8.3cmx8.3cmx1.3cm Board Number EVQ4572-QB-00A MPS IC Number MPQ4572GQB-AEC1 1.60 VIN= 8V VIN= 12V VIN= 24V VIN= 36V VIN= 48V VIN= 60V 80 1.40 1.20 70 1.00 60 0.80 50 0.60 40 0.40 30 0.20 20 POWER LOSS (W) 100 0.00 1 10 100 1000 LOAD CURRENT (mA) EVQ4572-QB-00A Rev. 1.1 MonolithicPower.com 4/29/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 1 EVQ4572-QB-00A – 60V/2A BUCK CONVERTER EVALUATION BOARD QUICK START GUIDE 1. Preset the power supply (VIN) between to 5V and 60V. Electronic loads represent a negative impedance to the regulator. If the current is too high, hiccup mode will be triggered. 2. Turn the power supply off. If longer cables are used between the source and the EVB (>0.5m total), install a damping capacitor at the input terminals. This is especially critical when VIN exceeds 24V. 3. Connect the power supply terminals to: a) Positive (+): VEMI b) Negative (-): GND 4. Connect the load 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 1.45V to turn the regulator on; drive EN below 1.12V to turn it off. 7. The oscillating frequency of the MPQ4572/MPQ4572-AEC1 can be configured with an external frequency resistor (RFREQ). RFREQ can be estimated with Equation (1): RFREQ (MΩ)  30 fSW (kHz) (1) The calculated resistance may need fine-tuning via bench testing. 8. The output voltage is set by the external resistor divider. The feedback resistor (R6 + R4) also sets the feedback loop bandwidth with the internal compensation capacitor. Choose R4 to be around 40kΩ. Then R5 can be calculated with Equation (2): MPQ4572 FB 5 R6 R4 VOUT R5 R5  (2) R4 VOUT 1 0.8 Table 1 lists the recommended feedback resistor values for common output voltages. Table 1: Feedback Resistors for Output Voltages VOUT (V) 3.3 5 12 R4 (kΩ) 41.2 (1%) 41.2 (1%) 41.2 (1%) R5 (kΩ) 13 (1%) 7.68 (1%) 2.94 (1%) R6 (kΩ) 20 (1%) 20 (1%) 20 (1%) 9. JP3 and JP4 can be used to add external shielding above the inductor and IC. JP3 and JP4 are not stuffed by default. EVQ4572-QB-00A Rev. 1.1 MonolithicPower.com 4/29/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 2 EVQ4572-QB-00A – 60V/2A BUCK CONVERTER EVALUATION BOARD EVALUATION BOARD SCHEMATIC L1 240nH 5V to 60V CIN9 is for sampling the input C and L L2 4.7µH VIN VEMI CIN1 CIN2 CIN3 CIN4 CIN5 CIN6 1nF 10nF 1nF 10nF 1µF 1µF GND 0603 0603 0603 0603 0805 CIN7 CIN8 10µF 10µF 1210 0805 CIN9 22µF 1210 C1A C1B C1C C1D 10µF 10µF 0.1µF 0.1µF 1210 1210 0603 0603 Input EMI Filter R8 for EMC R8 0Ω C12 R23 0.1µF/100V 10Ω/0603 BST 8 C4 0.1µF 1 U1 VIN IN SW 12 FB EN R2 NS D2 4 PG 3 High if VOUT if within ±10% R6 20kΩ PG FREQ 5 4.9V Freq = 400kHz 6 VCC CCM/SYNCO Freq R7 10Ω R9 100kΩ R11 76.8kΩ C6 NS 11 C2A 22µF C2B 22µF C2D 10nF C2E 1nF VOUT C2F 10nF R11 76.8kΩ fSW 400kHz VOUT (V) 3.3 R4 (kΩ) R5 (kΩ) 41.2 (1%) 13 (1%) 28kΩ 12.1kΩ 1MHz 2.2MHz 5 12 41.2 (1%) 7.68 (1%) 41.2 (1%) 2.94 (1%) CCM/SYNCO 7 C2C 1nF GND R15 0Ω R10 100kΩ JP1 GND C3 1µF R3 10Ω R4 R5 41.2kΩ 7.68kΩ MPQ4572 BZT52C5V6S 5V/2A VOUT C5 NS R1 100kΩ EN L3 15µH 2 VOUT R16 0Ω C10 R20 0.1µF 10Ω R17 0Ω 1 R18 0Ω 2 JP2 C11 0.1µF 10Ω NS U2 1 2 C8 6.8nF C9 NS 1µF VCC 3 TRIG DIS OUT THRS RST CV Package Reference 8 ICM7555IBAZ TRIG R14 GND 7 6 CCM/ EN SYNCO NC NC R13 1kΩ R12 11kΩ TRIG Freq 4 R21 R19 0Ω 12 11 10 9 BST 1 8 IN SW 2 7 GND 5 External frequency spread spectrum circuit option for lower EMI, NS as default C7 100nF 3 PG 4 5 6 FB FREQ VCC EVQ4572-QB-00A Rev. 1.1 MonolithicPower.com 4/29/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 3 EVQ4572-QB-00A – 60V/2A BUCK CONVERTER EVALUATION BOARD BILL OF MATERIALS Qty 4 4 Designator CIN1, C1N3, C2C, C2E CIN2, CIN4, C2D, C2F Value 1nF 10nF 2 CIN5, CIN6 1μF 4 CIN7, CIN8, C1A, C1B 10μF 1 CIN9 22μF 3 C1C, C1D, C12 0.1μF 2 C2A, C2B 22μF 2 C3, C9 1μF 2 C4, C7 0.1μF 1 C8 6.8nF 2 C10, C11 0.1μF 2 C5, C6 NS 1 L1 240nH 1 L2 4.7μH 1 L3 15μH 3 R1, R9, R10 R2, JP2, R14 R3, R7, R23 100kΩ 3 3 Description Ceramic capacitor, 100V, X7R Ceramic capacitor, 100V, X7R Ceramic capacitor, 100V, X7S Ceramic capacitor, 100V, X7S Electrical capacitor, 63V, SMD Ceramic capacitor, 100V, X7R Ceramic capacitor, 25V, X7R Ceramic capacitor, 25V, X7R Ceramic capacitor, 16V, X7R Ceramic capacitor, 50V, X7R Ceramic capacitor, 16V, X7R Inductor, 240nH, 19mΩ, 6.6A Inductor, 4.7uH, 83mΩ, 3.6A Inductor, 15uH, 40mΩ, 5.8A Film resistor, 1% Package Manufacturer Manufacturer P/N 0603 muRata GRM188R72A102KA01D 0603 muRata GRM188R72A103KA01D 0805 muRata GRM21BC72A105KE01L 1210 muRata GRM32EC72A106KE05L SMD Jianghai VTD-63V22 0603 muRata GRM188R72A104KA35D 1210 muRata GRM32ER71E226KE15L 0603 muRata GRM188R71E105KA12D 0603 muRata GRM188R71C104KA01D 0603 TDK C1608X7R1H682K 0402 muRata GRM155R71C104KA88D SMD TOKO DFE201612E-R24M SMD TOKO FDSD0402-H-4R7M SMD Coilcraft XAL6060-153MEB 0603 Yageo RC0603FR-07100KL 0603 Yageo RC0603FR-0710RL NS 10 Film resistor, 1% EVQ4572-QB-00A Rev. 1.1 MonolithicPower.com 4/29/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 4 EVQ4572-QB-00A – 60V/2A BUCK CONVERTER EVALUATION BOARD BILL OF MATERIALS (continued) Qty 1 1 1 1 1 1 1 2 1 Designator R4 R5 R6 R8 R11 R12 R13 R15, R16, R17, R18, R19 R20, R21 D2 1 U1 1 1 U2 JP1 VEMI, GND, GND, VOUT JP3, JP4 5 4 2 Value 41.2kΩ 7.68kΩ 20kΩ 0 76.8kΩ 11kΩ 1kΩ Description Film resistor, 1% Film resistor, 1% Film resistor, 1% Film resistor, 1% Film resistor, 1% Film resistor, 1% Film resistor, 1% Package 0603 0603 0603 0603 0603 0603 0603 Manufacturer Yageo Yageo Yageo Yageo Yageo Yageo Yageo Manufacturer P/N RC0603FR-0741K2L RC0603FR-077K68L RC0603FR-0720KL RC0603FR-070RL RC0603FR-0776K8L RC0603FR-0711KL RC0603FR-071KL 0 Film resistor, 1% 0402 Yageo RC0402FR-070RL 10 Film resistor, 1% Zener diode, 5.6V Yageo Diodes RC0402FR-0710RL BZT52C5V6S MPS MPQ4572GQB-AEC1 Intersil HZ ICM7555IBAZ 0402 SOD323 QFN-12 Step-down regulator (2.5mmx3.0mm) SOP-8 2.54mm test pin 2.0 golden pin HZ NS EVQ4572-QB-00A Rev. 1.1 MonolithicPower.com 4/29/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 5 EVQ4572-QB-00A – 60V/2A BUCK CONVERTER EVALUATION BOARD EVB TEST RESULTS Performance curves and waveforms are tested on the evaluation board. VIN = 24V, VOUT = 5V, L = 15µH, fSW = 400kHz, TA = 25°C, unless otherwise noted. Efficiency vs. Load Current vs. Power Loss Efficiency vs. Load Current vs. Power Loss 1.40 90 1.20 70 1.00 60 0.80 50 0.60 80 70 0.80 40 0.64 30 0.48 20 0.32 0.16 0.20 10 20 0.00 0 0.00 1 1000 Efficiency vs. Load Current vs. Power Loss 2.40 2.00 60 1.60 50 1.20 80 70 1.50 40 1.20 30 0.90 20 0.60 0.30 0.40 10 20 0.00 0 1000 0.00 1 LOAD CURRENT (mA) 1000 100 2.80 90 2.40 70 2.00 60 1.60 50 1.20 3.00 VIN=8V VIN=12V VIN=24V VIN=36V VIN=48V VIN=60V 80 EFFICIENCY (%) VIN=8V VIN=12V VIN=24V VIN=36V VIN=48V VIN=60V VOUT = 5V, fSW = 2.2MHz, L = 4.7μH, CCM 3.20 POWER LOSS (W) EFFICIENCY (%) 100 Efficiency vs. Load Current vs. Power Loss VOUT = 5V, fSW = 2.2MHz, L = 4.7μH, AAM 80 10 LOAD CURRENT (mA) Efficiency vs. Load Current vs. Power Loss 90 2.10 1.80 30 100 2.40 50 0.80 100 2.70 60 40 10 3.00 VIN=8V VIN=12V VIN=24V VIN=36V VIN=48V VIN=60V 70 2.70 2.40 2.10 60 1.80 50 1.50 40 1.20 30 0.90 40 0.80 20 0.60 30 0.40 10 0.30 20 0.00 0 1 10 100 LOAD CURRENT (mA) POWER LOSS (W) 2.80 90 EFFICIENCY (%) EFFICIENCY (%) 100 70 1 1000 VOUT = 5V, fSW = 1MHz, L = 10μH, CCM 3.20 POWER LOSS (W) VIN= 8V VIN= 12V VIN= 24V VIN= 36V VIN= 48V VIN= 60V 80 100 Efficiency vs. Load Current vs. Power Loss VOUT = 5V, fSW = 1MHz, L = 10μH, AAM 90 10 LOAD CURRENT (mA) LOAD CURRENT (mA) 100 1.12 0.96 30 100 1.28 50 0.40 10 1.44 60 40 1 1.60 VIN=8V VIN=12V VIN=24V VIN=36V VIN=48V VIN=60V 1000 POWER LOSS (W) 80 100 EFFICIENCY (%) EFFICIENCY (%) 90 VOUT = 5V, fSW = 400kHz, L = 15μH, CCM 1.60 POWER LOSS (W) VIN= 8V VIN= 12V VIN= 24V VIN= 36V VIN= 48V VIN= 60V POWER LOSS (W) VOUT = 5V, fSW = 400kHz, L = 15μH, AAM 100 0.00 1 10 100 1000 LOAD CURRENT (mA) EVQ4572-QB-00A Rev. 1.1 MonolithicPower.com 4/29/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 6 EVQ4572-QB-00A – 60V/2A BUCK CONVERTER EVALUATION BOARD EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board. VIN = 24V, VOUT = 5V, L = 15µH, fSW = 400kHz, TA = 25°C, unless otherwise noted. Start-Up through Input Voltage Start-Up through Input Voltage IOUT = 0A, AAM IOUT = 0A, CCM CH3: VIN CH3: VIN CH2: VOUT CH2: VOUT CH1: VSW CH4: IL CH4: IL CH1: VSW Start-Up through Input Voltage Shutdown through Input Voltage IOUT = 2A IOUT = 0A, AAM CH3: VIN CH3: VIN CH2: VOUT CH2: VOUT CH1: VSW CH4: IL CH4: IL CH1: VSW Shutdown through Input Voltage Shutdown through Input Voltage IOUT = 0A, CCM IOUT = 2A CH3: VIN CH3: VIN CH2: VOUT CH4: IL CH2: VOUT CH4: IL CH1: VSW CH1: VSW EVQ4572-QB-00A Rev. 1.1 MonolithicPower.com 4/29/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 7 EVQ4572-QB-00A – 60V/2A BUCK CONVERTER EVALUATION BOARD EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board. VIN = 24V, VOUT = 5V, L = 15µH, fSW = 400kHz, TA = 25°C, unless otherwise noted. Start-Up through EN Start-Up through EN IOUT = 0A, AAM IOUT = 0A, CCM CH3: VEN CH3: VEN CH2: VOUT CH2: VOUT CH1: VSW CH4: IL CH4: IL CH1: VSW Start-Up through EN Shutdown through EN IOUT = 2A IOUT = 0A, AAM CH3: VEN CH3: VEN CH2: VOUT CH2: VOUT CH4: IL CH1: VSW CH4: IL CH1: VSW Shutdown through EN Shutdown through EN IOUT = 0A, CCM IOUT = 2A CH3: VEN CH3: VEN CH2: VOUT CH4: IL CH2: VOUT CH1: VSW CH4: IL CH1: VSW EVQ4572-QB-00A Rev. 1.1 MonolithicPower.com 4/29/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 8 EVQ4572-QB-00A – 60V/2A BUCK CONVERTER EVALUATION BOARD EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board. VIN = 24V, VOUT = 5V, L = 15µH, fSW = 400kHz, TA = 25°C, unless otherwise noted. Output Ripple Output Ripple IOUT = 0A, AAM IOUT = 0A, CCM CH2: VOUT/AC CH1: VSW CH2: VOUT/AC CH1: VSW CH4: IL CH4: IL Output Ripple SCP Entry IOUT = 2A IOUT = 0A, AAM CH2: VOUT CH1: VSW CH3: VPG CH2: VOUT/AC CH1: VSW CH4: IL CH4: IL SCP Entry SCP Entry IOUT = 0A, CCM IOUT = 2A CH2: VOUT CH2: VOUT CH3: VPG CH3: VPG CH4: IL CH4: IL CH1: VSW CH1: VSW EVQ4572-QB-00A Rev. 1.1 MonolithicPower.com 4/29/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 9 EVQ4572-QB-00A – 60V/2A BUCK CONVERTER EVALUATION BOARD EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board. VIN = 24V, VOUT = 5V, L = 15µH, fSW = 400kHz, TA = 25°C, unless otherwise noted. SCP Recovery SCP Recovery IOUT = 0A, AAM IOUT = 0A, CCM CH2: VOUT CH2: VOUT CH3: VPG CH3: VPG CH4: IL CH4: IL CH1: VSW CH1: VSW SCP Recovery Load Transient IOUT = 2A IOUT = 0A to 1A, AAM CH2: VOUT/AC CH2: VOUT CH3: VPG CH4: IL CH4: IOUT CH1: VSW Load Transient Cold Crank IOUT = 1A to 2A, AAM VIN = 24V to 4V to 5V, IOUT = 0A CH2: VOUT/AC CH3: VIN CH1: VSW CH2: VOUT CH4: IOUT CH4: IL EVQ4572-QB-00A Rev. 1.1 MonolithicPower.com 4/29/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 10 EVQ4572-QB-00A – 60V/2A BUCK CONVERTER EVALUATION BOARD EVB TEST RESULTS (continued) Performance curves and waveforms are tested on the evaluation board. VIN = 24V, VOUT = 5V, L = 15µH, fSW = 400kHz, TA = 25°C, unless otherwise noted. VIN Ramp Down and Up Cold Crank VIN = 18V to 4.5V to 0V to 4.5V to 18V, IOUT = 0A VIN = 24V to 4V to 5V, IOUT = 2A CH3: VIN CH1: VSW CH3: VIN CH1: VSW CH2: VOUT 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 = 2A VIN = 24V to 48V to 24V, IOUT = 2A CH3: VIN CH3: VIN CH1: VSW CH1: VSW CH2: VOUT CH2: VOUT CH4: IL CH4: IL EVQ4572-QB-00A Rev. 1.1 MonolithicPower.com 4/29/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 11 EVQ4572-QB-00A – 60V/2A BUCK CONVERTER EVALUATION BOARD PCB LAYOUT Figure 1: Top Silk and Top Layer Figure 2: IN1 Layer Figure 3: IN2 Layer Figure 4: Bottom Silk and Bottom Layer EVQ4572-QB-00A Rev. 1.1 MonolithicPower.com 4/29/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 12 EVQ4572-QB-00A – 60V/2A BUCK CONVERTER EVALUATION BOARD Revision History Revision # 1.1 Revision Date 4/29/2020 Description Grammar updates to Quick Start Guide and BOM Pages Updated 2,4-5 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. EVQ4572-QB-00A Rev. 1.1 MonolithicPower.com 4/29/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved 13