EVQ8112A-J-00A

EVQ8112A-J-00A 60V, High-Side Current-Sense Amplifier Evaluation Board, AEC-Q100 Qualified DESCRIPTION FEATURES The EVQ8112A-J-00A is an evaluation board designed to demonstrate the capabilities of the MPQ8112A, a low-cost, unipolar, high-side current-sense amplifier. The device operates from a 2.7V to 60V supply voltage and typically consumes a 300µA current. The common mode input voltage ranges between 0V and 60V with a 700kHz high bandwidth.     The MPQ8112A converts the differential input voltage to a current output. This current is converted back to a voltage with an external load resistor. The MPQ8112A has an adjustable gain based on the external, common input resistors and load resistor. The EV8112A-J-00A is a fully assembled and tested evaluation board. The MPQ8112A is available in a TSOT23-6L package. ELECTRICAL SPECIFICATIONS Parameter Symbol Value Units VCC supply voltage VCC 2.7 to 60 V Common input voltage VCM 0 to VCC V V5 supply voltage V5 2.7 to 5.5 V VSENSE 0 to 200 mV AV 50 V/V Sense voltage Output gain         Low-Cost, Compact Current-Sense Solution 700kHz Bandwidth 300µA Typical Supply Current 2.7V to 60V Operating Supply Voltage Range 0V to 60V Common Mode Input Voltage Range 0.2µA Typical Shutdown Current 300µV Input Offset Voltage Available with Adjustable Gain ±1% Current-Sense Gain Accuracy High-Current Sensing Capabilities Available in a 6-Pin TSOT23-6L Package Available in AEC-Q100 Grade 1 APPLICATIONS        Advanced Driver Assistance Systems (ADAS) Sensor Fusion Systems Electric Power Steering (EPS) Systems Electronic Stability Control (ESC) Systems Brake Systems Battery-Operated Systems Energy Management 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. EVQ8112A-J-00A Rev. 1.0 MonolithicPower.com 6/8/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 1 EVQ8112A-J-00A – 60V, CURRENT-SENSE AMPLIFIER EVALUATION BOARD EVQ8112A-J-00A EVALUATION BOARD Total Output Error vs. VSENSE VCC = VCM ERROR (%) 2 1.5 Vcc=VCM=12V 1 Vcc=VCM=48V 0.5 Vcc=VCM=60V 0 -0.5 -1 -1.5 -2 LxWxH (3.6cmx3.4cmx1.3cm) 0 25 50 75 100 125 150 175 200 VSENSE (mV) Board Number EVQ8112A-J-00A MPS IC Number MPQ8112A EVQ8112A-J-00A Rev. 1.0 MonolithicPower.com 6/8/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 2 EVQ8112A-J-00A – 60V, CURRENT-SENSE AMPLIFIER EVALUATION BOARD QUICK START GUIDE 1. Preset the power supply (VCC) to be between 2.7V and 60V. 2. Turn the VCC power supply off. 3. Preset the V5 power supply to be between 2.7V and 5.5V. 4. Turn the V5 power supply off. 5. Preset the ISENSE load to be between 0A and 2A. This sets VSENSE between 0mV and 200mV (VSENSE = ISENSE x RSENSE). 6. Turn the ISENSE load off. 7. Ensure that JP1 and JP2 are not shorted simultaneously. To set the JP1 and JP2 connections, follow the guidelines below: a. To test with VCC = VCM, short JP1 and open JP2. b. To test with VCC > VCM and VCM = 0V, open JP1 and short JP2. 8. Connect the VCC power supply terminals to: a. Positive (+): VCC b. Negative (-): GND 9. Connect the V5 power supply terminals to: a. Positive (+): V5 b. Negative (-): GND 10. To test with VCC = VCM, short JP1 and open JP2, and then connect the load terminals to: a. Positive (+): RG2 b. Negative (-): GND 11. To test with VCC > VCM and VCM = 0V, open JP1 and short JP2. Isolate the ISENSE load supply with an isolation transformer, and then connect the load terminals to: a. Positive (+): RG1 b. Negative (-): GND 12. Turn the V5 power supply on. Then turn the VCC power supply on after making the connections. 13. Turn the ISENSE load on and adjust the ISENSE range. The MPQ8112A’s output (VOUT) can be estimated with Equation (1): VOUT = ISENSE x RSENSE / R1 x GM x R3 (1) Where GM is 5A/A. The MPQ8112A’s gain (AV) can be adjusted by selecting different combinations of R3 and R1. AV can be estimated with Equation (2): AV = VOUT / VSENSE = R3 / R1 x GM (2) Table 1 lists the possible AV values using different resistors. Table 1: Selecting AV AV (V/V) R1/R2 (kΩ) R3 (kΩ) 100 1 20 50 1 10 25 1.02 5.1 10 1 2 EVQ8112A-J-00A Rev. 1.0 MonolithicPower.com 6/8/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 3 EVQ8112A-J-00A – 60V, CURRENT-SENSE AMPLIFIER EVALUATION BOARD EVALUATION BOARD SCHEMATIC GND VCC 0V to VCC RG1 C5 NS U1 0603/100V JP1 3 0V ≤ VCM ≤ VCC RG1 V5 6 2.7V to 5.5V R1 1kΩ C3 100nF 0603 C7 10pF RSE NS E 100mΩ 0603/50V V5 0603/50V 2512 R2 1kΩ 2 RG2 RG2 GND MPQ8112AGJ OUT 1 VOUT 0603 JP2 C4 5pF R3 10kΩ C6 NS 0603 0603/100V GND 0603/50V GND GND GND VCC GND VOUT = ISE NSE x RSE NSE /R1 x GM x R3 = 50 x ISE NSE x RSE NSE AV (V/V) R1/R2 (kΩ) R3 (kΩ) 100 1 20 50 1 10 25 1.02 5.1 10 1 2 GND 2.7 to 60V C1 NS 5 AV = R3/R1 x GM = 50V/V 4 0603/100V GND GND VCC C2 1µF 1206/100V GND Figure 1: Evaluation Board Schematic PACKAGE REFERENCE TOP VIEW OUT 1 6 RG2 2 5 GND RG1 3 4 V5 VCC TSOT23-6L EVQ8112A-J-00A Rev. 1.0 MonolithicPower.com 6/8/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 4 EVQ8112A-J-00A – 60V, CURRENT-SENSE AMPLIFIER EVALUATION BOARD EVQ8112A-J-00A BILL OF MATERIALS Qty Ref Value 3 C1, C5, C6 NS 1 C2 1μF 1 C3 0.1μF 1 C4 5pF 1 C7 10pF 2 1 1 R1, R2 R3 RSENSE 1kΩ 10kΩ 100mΩ 1 U1 2 JP1, JP2 2.54mm 1 JP1 V5, Vcc, RG1, RG2, GND, GND, VOUT 2.54mm 7 Description Ceramic capacitor, 100V, X7R Ceramic capacitor, X7R, 100V Ceramic capacitor, 50V, X7R Ceramic capacitor, COG, 50V Ceramic capacitor, COG, 50V Film resistor, 1% Film resistor, 1% Film resistor, 1%, 1W MPQ8112A Current-sense amplifier Test point 2 x 1, 2.54mm, 180° connector 2.54mm jumper 1.0 golden pin Package Manufacturer Manufacturer P/N 0603 1206 Murata GRM31CR72A105KA01L 0603 Murata GRM188R71H104KA93D 0603 TDK C1608C0G1H050C 0603 muRata GRM1885C1H100JA01 0603 0603 2512 TSOT236L Yageo Yageo Yageo RC0603FR-071KL RC0603FR-0710KL RL2512FK-070R1L MPS MPQ8112AGJ Custom Custom Custom EVQ8112A-J-00A Rev. 1.0 MonolithicPower.com 6/8/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 5 EVQ8112A-J-00A – 60V, CURRENT-SENSE AMPLIFIER EVALUATION BOARD EVB TEST RESULTS VCC = 12V, VRG1 = 12V, V5 = 5V, TA = 25°C, R1 = R2 = 1kΩ, and R3 = 10kΩ, unless otherwise noted. Total Output Error vs. VSENSE Total Output Error vs. VSENSE VCC = VCM VCM = 0V 8 1.5 Vcc=VCM=12V 1 Vcc=VCM=48V 0.5 Vcc=VCM=60V 0 -0.5 6 ERROR (%) ERROR (%) 2 -1 4 2 Vcc=12V Vcc=48V Vcc=60V 0 -1.5 -2 0 25 50 75 -2 100 125 150 175 200 0 25 50 VSENSE (mV) 75 100 125 150 175 200 VSENSE (mV) Total Output Error vs. VSENSE Total Output Error vs. VSENSE VCC = VCM VCM = 0V 2 8 1.5 6 ERROR (%) ERROR (%) 1 0.5 0 -0.5 Ta=+25°C Ta=+155°C Ta=-55°C -1 -1.5 -2 4 2 Ta=+25°C Ta=+155°C Ta=-55°C 0 -2 0 25 50 75 100 125 150 175 200 VSENSE (mV) 0 25 50 75 100 125 150 175 200 VSENSE (mV) Gain vs. Frequency COUT = 5pF 40 35 30 GAIN (dB) 25 20 15 10 5 0 -5 -10 0.1 1 10 100 1000 FREQUENCY (kHz) 10000 EVQ8112A-J-00A Rev. 1.0 MonolithicPower.com 6/8/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 6 EVQ8112A-J-00A – 60V, CURRENT-SENSE AMPLIFIER EVALUATION BOARD EVB TEST RESULTS (continued) VCC = 12V, VRG1 = 12V, V5 = 5V, TA = 25°C, R1 = R2 = 1kΩ, and R3 = 10kΩ, unless otherwise noted. Transient Response Transient Response VSENSE = 0mV to 100mV VSENSE = 0mV to 200mV CH2: VOUT/AC CH2: VOUT 2V/div 1µs/div. 1µs/div. Transient Response VSENSE = 100mV to 200mV CH2: VOUT 2V/div 1µs/div. EVQ8112A-J-00A Rev. 1.0 MonolithicPower.com 6/8/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 7 EVQ8112A-J-00A – 60V, CURRENT-SENSE AMPLIFIER EVALUATION BOARD PCB LAYOUT Figure 2: Top Silk Layer Figure 3: Bottom Layer EVQ8112A-J-00A Rev. 1.0 MonolithicPower.com 6/8/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 8 EVQ8112A-J-00A – 60V, CURRENT-SENSE AMPLIFIER EVALUATION BOARD REVISION HISTORY Revision # 1.0 Revision Date 06/08/2021 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. EVQ8112A-J-00A Rev. 1.0 MonolithicPower.com 6/8/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 9