MPQ8112GJ-AEC1-P

MPQ8112/MPQ8112A 60V, High-Side Current-Sense Amplifier, AEC-Q100 Qualified DESCRIPTION FEATURES The MPQ8112 and MPQ8112A are low-cost, unipolar, high-side current-sense amplifiers. The devices operate from a 2.7V to 60V supply and typically consume a 300µA current. They are ideal for today’s automotive systems, industrial supplies, and systems where battery/DC current monitoring is critical.         High-side current monitoring is especially useful in battery-powered systems, since it does not interfere with the ground path of the battery charger. The common mode input ranges between 0V and 60V with a 700kHz high bandwidth. That makes these devices suitable for use in inside control and short-circuit protection loops. The MPQ8112 directly converts a differential input voltage to a voltage output with built-in internal common input resistors and a load resistor. The MPQ8112 has a 50V/V gain. 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. Both the MPQ8112 and MPQ8112A available in TSOT23-6L packages. are     Low-Cost, Compact Current-Sense Solution 700kHz Bandwidth 300µA Typical Supply Current 2.7V to 60V Operating Supply Voltage 0V to 60V Common Mode Input Range 0.2µA Typical Shutdown Current 300µV Input Offset Voltage Available with Fixed 50V/V Gain (MPQ8112), or Adjustable Gain (MPQ8112A) ±1% Current-Sense Gain Accuracy High-Current Sensing Capabilities Available in a 6-Lead TSOT23 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. MPQ8112 FAMILY VERSIONS Part Number Output Gain MPQ8112 50V/V MPQ8112A Adjustable MPQ8112/MPQ8112A Rev. 1.0 www.MonolithicPower.com 7/7/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 1 MPQ8112/MPQ8112A – 60V, HIGH-SIDE, CURRENT-SENSE AMPLIFIER TYPICAL APPLICATIONS 0V VCM RSENSE VCC To Load ISENSE RG2 RG1 MPQ8112 GND V5 VCC OUT VOUT 2.7V To 60V VOUT = 50 x ISENSE x RSENSE Figure 1: MPQ8112 (Voltage Output) 0V VCM VCC RSENSE To Load RG1 RG2 ISENSE RG1 RG2 MPQ8112A GND 2.7V To 60V VCC V5 OUT IOUT ROUT VOUT = ISENSE x RSENSE / RG1 x GM x ROUT Figure 2: MPQ8112A (Current Output) MPQ8112/MPQ8112A Rev. 1.0 www.MonolithicPower.com 7/7/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 2 MPQ8112/MPQ8112A – 60V, HIGH-SIDE, CURRENT-SENSE AMPLIFIER ORDERING INFORMATION Part Number* MPQ8112GJ-AEC1 MPQ8112AGJ-AEC1 Package TSOT23-6L TSOT23-6L Top/Bottom Markings See Below See Below MSL Rating** 1 * For Tape & Reel, add suffix –Z (e.g. MPQ8112GJ-AEC1–Z). ** Moisture Sensitivity Level Rating TOP MARKING Part Number Top Marking Bottom Marking Definitions MPQ8112GJ-AEC1 AXD: Product code Y: Year code C: Suffix LLL: Lot number MPQ8112AGJ-AEC1 BML: Product code Y: Year code LLLL: Lot number PACKAGE REFERENCE OUT 1 6 RG2 2 5 GND RG1 3 4 V5 VCC TSOT23-6L MPQ8112/MPQ8112A Rev. 1.0 www.MonolithicPower.com 7/7/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 3 MPQ8112/MPQ8112A – 60V, HIGH-SIDE, CURRENT-SENSE AMPLIFIER PIN FUNCTIONS Pin # Name 1 OUT 2 RG2 3 RG1 4 VCC 5 GND 6 V5 Description Output. The MPQ8112 does not require an external resistor, so the OUT pin can be left floating. For the MPQ8112A, connect an external resistor to OUT to set the gain. Negative gain resistor. For the MPQ8112, connect RG2 directly to the load side of the current-sense resistor, as closely as possible. For the MPQ8112A, connect RG2 to the load side of the current-sense resistor through a gain resistor (RG2). RG2 should be below 4kΩ to obtain high current-sense accuracy. It is recommended for RG2 and RG1 to equal 1kΩ. Positive gain resistor. For the MPQ8112, connect RG1 directly to the power side of the current-sense resistor, as closely as possible. For the MPQ8112A, connect RG1 to the power side of the current-sense resistor through a gain resistor (RG1). RG1 should be below 4kΩ to obtain the high current-sense accuracy. It is recommended for RG1 to equal 1kΩ. Power input. Place a bypass capacitor between VCC and GND, as close as possible. A 0.1µF to 1µF low-ESR ceramic capacitor is recommended. Ground. Power supply for internal trim and control block. Pull V5 above its 2V upper threshold to enable the part. Pull V5 below its 1.9V lower threshold to disable the part. The power source connected to V5 must be able to output a current above 1mA. Place a bypass capacitor between V5 and GND. A 10nF to 100nF low-ESR ceramic capacitor is recommended. θJA θJC ABSOLUTE MAXIMUM RATINGS (1) Thermal Resistance (5) VCC to GND ..................................-0.3V to +62V RG1, RG2 to GND ......................... -0.3V to VCC VCC to RG1, RG2 .........................-0.3V to +62V OUT to GND ............ -0.3V to +22V (MPQ8112) OUT to GND ............ -0.3V to VCC (MPQ8112A) Differential input voltage (VRG1 - VRG2)... ±400mV V5 to GND .....................................-0.3V to +6V Max junction temperature .........................150°C Storage temperature ................ -65°C to +150°C Continuous power dissipation (TA = 25°C) (2) TSOT23-6L .............................................. 0.57W TSOT23-6L ............................ 220 .... 110.. °C/W ESD Ratings (3) Human body model (HBM).........................±2kV Charged device model (CDM)..................±750V Recommended Operating Conditions Vcc to GND ...................................... 2.7V to 60V RG1, RG2 to GND ...............................0V to VCC VCC to RG1, RG2 ............................... 0V to 60V OUT to GND ................... 0V to 20V (MPQ8112) OUT to GND ....... 0V to VCC - 0.7V (MPQ8112A) Operating junction temp (TJ).............................. ………………………………...-40°C to +125°C (4) Notes: 1) Exceeding these ratings may damage the device. 2) The maximum allowable power dissipation is a function of the maximum junction temperature, TJ (MAX), the junction-toambient thermal resistance, θJA, and the ambient temperature, TA. The maximum allowable continuous power dissipation at any ambient temperature is calculated by PD (MAX) = (TJ (MAX) - TA) / θJA. Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. Internal thermal shutdown circuitry protects the device from permanent damage. 3) These devices are ESD-sensitive. It is recommended to handle them with precaution. 4) It is possible to operate the devices at junction temperatures above 125°C. Contact an MPS FAE for details. 5) The value of θJA given in this table is only valid for comparison with other packages and cannot be used for design purposes. These values were calculated in accordance with JESD51-7, and simulated on a specified JEDEC board. They do not represent the performance obtained in an actual application. MPQ8112/MPQ8112A Rev. 1.0 www.MonolithicPower.com 7/7/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 4 MPQ8112/MPQ8112A – 60V, HIGH-SIDE, CURRENT-SENSE AMPLIFIER ELECTRICAL CHARACTERISTICS VCC = 12V, VRG1 = 12V, TA = -40°C to +125°C, typical values at TJ = 25°C. RG1 = RG2 = 0Ω, and ROUT not used for the MPQ8112. RG1 = RG2 = 1kΩ, and ROUT = 10kΩ for the MPQ8112A. All unless otherwise noted. Parameter Supply voltage Common mode input voltage V5 supply voltage Supply current Symbol Conditions V VCM 0 VCC V V5 2.7 5.5 V 360 µA ICC + IV5 VSENSE = 0, VCC = 60V, V5 = 5V Full-scale sense voltage VSENSE VSENSE = VRG1 - VRG2 Output voltage gain Bandwidth (8) Power supply rejection ratio (9) V5 upper threshold voltage V5 lower threshold voltage V5 shutdown supply current Output respond time (8) Units 60 VSENSE = 100mV, VCC = 60V, VCM1 = 60V, VCM2 = 22V Current-sense gain Max 2.7 CMR Input bias current Typ VCC Common mode input rejection (6) Input offset voltage (7) Min VOS IRG1, IRG2 GM AV BW 300 65 90 dB 200 mV VCM = 12V, VSENSE1 = 100mV, VSENSE2 = 20mV 0.3 1 mV VCM = 12V 0.25 1 µA A/A TJ = 25°C TJ = -40°C to +125°C 4.95 4.9 5 5 5.05 5.1 MPQ8112, VSENSE = 100mV, VCM = 12V, TJ = 25°C 49.5 50 50.5 MPQ8112, VSENSE = 100mV, VCM = 12V, TJ = -40°C to +125°C COUT = 5pF VCC1 = 60V, VCC2 = 2.7V, VSENSE = 24mV V/V 49 50 51 700 kHz 70 80 dB VTH_UPPER 1.3 2 2.5 V VTH_LOWER 1.2 1.9 2.4 V V5 = 1V 0.2 2 µA RG1 = RG2 = 1kΩ, ROUT = 10kΩ, VSENSE = 5mV to 100mV, VOUT from 10% to 90% 500 PSRR ICC(SHDN) ns RG1 = RG2 = 1kΩ, ROUT = 10kΩ, VSENSE = 100mV to 5mV, VOUT from 10% to 90% 500 Notes: 6) 7) 8) 9) CMR = 20 x log[(VCM1 - VCM2) / (VOUT1 - VOUT2)]. VOUT1 is the output voltage at VCM1, and VOUT2 is the output voltage at VCM2. VOS = VSENSE1 - VOUT1 / [(VOUT1 - VOUT2) / (VSENSE1 - VSENSE2)]. VOUT1 is the output voltage at VSENSE1, and VOUT2 is the output voltage at VSENSE2. Not tested in production. Guaranteed by design and characterization. PSRR = 20 x log[(VCC1 - VCC2) / (VOUT1 - VOUT2)]. VOUT1 is the output voltage at VCC1, and VOUT2 is the output voltage at VCC2. MPQ8112/MPQ8112A Rev. 1.0 www.MonolithicPower.com 7/7/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 5 MPQ8112/MPQ8112A – 60V, HIGH-SIDE, CURRENT-SENSE AMPLIFIER TYPICAL CHARACTERISTICS VCC = VRG1 = 12V, V5 = 5V, TJ = -40°C to +125°C, unless otherwise noted. Supply Current vs. Temperature Input Bias Current vs. Temperature IQ = ICC + IV5 302 310 290 IQ (μA) IRG1/IRG2 (nA) 300 298 270 250 230 210 190 296 -50 -25 0 25 50 75 100 -50 125 -25 TEMPERATURE (°C) 25 50 75 100 125 TEMPERATURE (°C) V5 Shutdown Supply Current vs. Temperature V5 UVLO Threshold vs. Temperature 0.5 2.2 2.1 0.45 Rising Falling 2.0 0.4 ICC(SHDN) (A) V5 UVLO THRESHOLD (V) 0 1.9 1.8 1.7 0.35 0.3 0.25 0.2 1.6 0.15 0.1 1.5 -50 -25 0 25 50 75 100 125 TEMPERATURE (°C) -50 -25 0 25 50 75 100 TEMPERATURE (°C) 125 Current-Sense Gain vs. Temperature 5.04 GM (A/A) 5.02 5.00 4.98 4.96 -50 -25 0 25 50 75 100 125 TEMPERATURE (°C) MPQ8112/MPQ8112A Rev. 1.0 www.MonolithicPower.com 7/7/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 6 MPQ8112/MPQ8112A – 60V, HIGH-SIDE CURRENT-SENSE AMPLIFIER TYPICAL PERFORMANCE CHARACTERISTIC (continued) VCC = 12V, VRG1 = 12V, V5 = 5V, TA = 25°C. RG1 = RG2 = 0Ω, and ROUT not used for the MPQ8112. RG1 = RG2 = 1kΩ, and ROUT = 10kΩ for the MPQ8112A. All 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 -2 0 25 50 75 100 125 150 175 200 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 MPQ8112/MPQ8112A Rev. 1.0 www.MonolithicPower.com 7/7/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 7 MPQ8112/MPQ8112A – 60V, HIGH-SIDE CURRENT-SENSE AMPLIFIER TYPICAL PERFORMANCE CHARACTERISTICS VCC = 12V, VRG1 = 12V, V5 = 5V, TA = 25°C. RG1 = RG2 = 0Ω, and ROUT not used for the MPQ8112. RG1 = RG2 = 1kΩ, and ROUT = 10kΩ for the MPQ8112A. All unless otherwise noted. Transient Response Transient Response VSENSE = 0mV to 100mV VSENSE = 0mV to 200mV CH2: VOUT 2V/div. CH2: VOUT 2V/div. 1μs/div. 1μs/div. Transient Response VSENSE = 100mV to 200mV CH2: VOUT 2V/div. 1μs/div. MPQ8112/MPQ8112A Rev. 1.0 www.MonolithicPower.com 7/7/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 8 MPQ8112/MPQ8112A – 60V, HIGH-SIDE CURRENT-SENSE AMPLIFIER FUNCTIONAL BLOCK DIAGRAMS IRG1 RG1 ISENSE Trim and Control RIN_1 V5 M1 1kΩ 1kΩ RSENSE RIN_2 IOUT Current Mirror GM = 5 RG2 RIN_OUT 10kΩ VCC OUT VOUT To Load VCC GND Figure 3: MPQ8112 Functional Block Diagram RG1 IRG1 Trim and Control RG1 ISENSE V5 M1 RSENSE RG2 OUT Current Mirror GM = 5 RG2 IOUT ROUT Vcc To Load VCC GND Figure 4: MPQ8112A Functional Block Diagram MPQ8112/MPQ8112A Rev. 1.0 www.MonolithicPower.com 7/7/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 9 MPQ8112/MPQ8112A – 60V, HIGH-SIDE CURRENT-SENSE AMPLIFIER OPERATION The MPQ8112 and MPQ8112A are high-side current-sense amplifiers with a wide 2.7V to 60V operating input voltage (VCC) range. Their common mode input voltage (VCM) is based on VCC, with an operating range of 0 ≤ VCM ≤ VCC ≤ 60V. The MPQ8112 directly converts a differential input voltage to a voltage output with built-in internal common input resistors and a load resistor. The MPQ8112 has a 50V/V gain. 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. Gain Setting The sense current (ISENSE) flows through the sense resistor (RSENSE), which generates a sense voltage (VSENSE). The high-precision sense amplifier built into the MPQ8112/MPQ8112A monitors the differential voltage (VSENSE) and dynamically adjusts the gate voltage of the internal N-channel MOSFET (M1) to maintain an equal passing current (IRG1). IRG1 is then multiplied by a gain factor (GM) in the output stage current mirror, and finally flows through ROUT to generate VOUT. The MPQ8112/MPQ8112A’s output (VOUT) can be estimated with Equation (1): VOUT = ISENSE x RSENSE / RG1 x GM x ROUT (1) Where GM is 5A/A, and RG1 and ROUT are external resistors for the MPQ8112A. For the MPQ8112, RG1 is instead RIN_1, and ROUT is instead RIN_OUT. These values are 1kΩ and 10kΩ, respectively. The total gain (AV) can be calculated with Equation (2): AV = VOUT / VSENSE = ROUT / RG1 x GM (2) The MPQ8112A’s gain is adjustable by selecting different combinations of ROUT / RG1. The MPQ8112’s gain is fixed to 50V/V, and set by the internal resistors (RIN_1 and RIN_OUT). VCC Supply The VCC supply is the power source for the internal input stage amplifier and output stage current mirror circuitry. Use a bypass capacitor to ensure stability. Apply a 0.1µF to 1µF low-ESR ceramic capacitor between VCC and GND, as close as possible. If the VCC power source is noisy, additional capacitance may be required. Common Input Voltage The MPQ8112/MPQ8112A’s ranges between 0V and VCC. common input The minimum common input voltage is 0V. If the common input voltage is below 1.2V, an internal, dedicated compensation circuit is activated and drives the M1 drain voltage high enough to make the shunt current (IRG1) pass into the current mirror. The compensation circuit can cause the output error to rise when VCM is below 1.2V ( for more information, see the Output Error vs. VSENSE curves in the Typical Performance Characteristics section on page 7). It is recommended to ensure that the common input voltage (VRG1) does not exceed VCC since VRG1 is the positive input of the amplifier, which is powered by VCC. V5 Supply V5 supplies the internal control block. It also supplies the compensation circuit when the common input voltage (VRG1 / VRG2) is low. V5 can act like a digital control pin that turns the current-sense amplifier on and off. If V5 is pulled below its 1.9V lower threshold voltage, the chip shuts down. If V5 is pulled above its 2V upper threshold voltage, the part turns on. In addition, if the common input voltage drops below 1.2V, the compensation circuit is activated and drives the M1 drain voltage high enough to make the shunt current (IRG1) pass into the current mirror. The compensation circuit consumes 0.1mA to 1mA of current when it starts to work. Therefore, V5 requires a lowimpendence power source and a 10nF to 100nF ceramic bypass capacitor. MPQ8112/MPQ8112A Rev. 1.0 www.MonolithicPower.com 7/7/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 10 MPQ8112/MPQ8112A – 60V, HIGH-SIDE CURRENT-SENSE AMPLIFIER APPLICATION INFORMATION Setting the Output Voltage The output voltage and gain of the MPQ8112A can be calculated with Equation (1) and Equation (2) on page 10. The maximum output voltage (VOUT_MAX) is limited by the power supply (VCC) and the maximum output current (IOUT_MAX). Calculate VOUT_MAX with Equation (3) and Equation (4), using the lower value as the threshold: VOUT_MAX = VCC - 0.7V VOUT_MAX = ROUT x IOUT_MAX (3) (4) Where IOUT_MAX is 2mA when V5 = 5V. IOUT_MAX decreases as V5 ramps down. When V5 equals 2.7V, IOUT_MAX is approximately 1mA. It is strongly recommended to connect V5 to a 5V voltage source to achieve the widest VOUT range. For the MPQ8112, the VOUT_MAX has an additional limitation, in that the maximum voltage on the built-in output resistor (RIN_OUT) is 20V. Compare to the values obtained by Equation (3) and Equation (4) to 20V, then use the lowest value as the MPQ8112 VOUT_MAX threshold. Selecting the Sensing Resistor Given a full-scale sense current, select RSENSE so that VSENSE does not exceed 200mV, which is the maximum voltage for accuracy measurements. To measure lower currents more accurately, use a high RSENSE value. A higher value develops a higher sense voltage, which overcomes offset voltage errors on the internal current amplifier. However, high RSENSE values also introduce high losses. Ultimately, the RSENSE selection is a tradeoff of accuracy and losses. In most applications, choose an RSENSE value that provides a full-scale VSENSE voltage range between 50mV and 200mV. In applications that monitor very high current, ensure RSENSE is able to dissipate its own I2R losses. If the resistor’s power rating is exceeded, its value may drift or it may fail altogether, causing a differential voltage across the terminals in excess of the absolute maximum range (0.4V). Selecting Common Input Resistors and Output Resistors The MPQ8112 has built-in common input and output resistors and a fixed 50V/V gain. It does not require external resistors. Choose the MPQ8112A’s RG1/RG2 and ROUT to provide VOUT with the appropriate full-scale voltage range. Select RG2/RG2 first, and ensure that they are below 4kΩ for a high current-sense accuracy. RG1 = RG2 = 1kΩ is recommended. Then ROUT can be calculated with Equation (5): ROUT = VOUT / (ISENSE x RSENSE / RG1 x GM) (5) VSENSE Over Maximum Rating Voltage Protection Figure 5 shows that the MPQ8112/MPQ8112A has built-in back-to-back diodes between RG1 and RG2. These diodes have a typical clamping voltage of ±400mV and a 100mA sink current capacity. In fault conditions where VSENSE exceeds 400mV or drops below -400mV, the MPQ8112A avoids damage by designing the external resistors (RG1 and RG2) to limit the backto-back diodes’ sink current below 100mA. The MPQ8112 also avoids damage with external resistors (RG1 and RG2), but its output gain and accuracy are affected by the different performance between the external and internal resistors. RG1 IRG1 ISENSE RG1 RIN_1 1kΩ RSENSE RG2 RIN_2 1kΩ IRG2 RG2 MPQ8112/MPQ8112A MPQ8112 Only To Load Figure 5: Back-to-Back Diodes The MPQ8112 gives a fixed gain of 50V/V; care must be taken so that VSENSE does not exceed 400mV so that VOUT is out of its 20V limitation. MPQ8112/MPQ8112A Rev. 1.0 www.MonolithicPower.com 7/7/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 11 MPQ8112/MPQ8112A – 60V, HIGH-SIDE CURRENT-SENSE AMPLIFIER PCB Layout Guidelines (10) Efficient PCB layout, especially for the sensing resistor and output resistor placement, affects measurement accuracy. For the best results, refer to Figure 6 and follow the guidelines below: 1. To minimize any resistance in series with sensing resistor trace, connect the RG1 and RG2 pins as close as possible to the sensing resistor. 2. Connect the bypass capacitors close to the device pins to decouple the power supply noise. Top Layer Bottom Layer Figure 6: Recommended PCB Layout Note: 10) The recommended PCB layout is based on Figure 7. MPQ8112/MPQ8112A Rev. 1.0 www.MonolithicPower.com 7/7/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 12 MPQ8112/MPQ8112A – 60V, HIGH-SIDE CURRENT-SENSE AMPLIFIER TYPICAL APPLICATION CIRCUITS 0V VCM VCC RSENSE To Load ISENSE 3 RG2 RG1 2 MPQ8112 5 GND V5 5V 6 C2 0.1μF 4 2.7V to 60V VCC OUT 1 VOUT C1 1μF VOUT = 50 x ISENSE x RSENSE Figure 7: MPQ8112 (VCM ≤ VCC) 0V VCM VCC RSENSE To Load ISENSE RG1 1kΩ RG2 1kΩ 3 RG1 RG2 2 MPQ8112A 5 GND V5 6 5V C2 0.1μF 2.7V To 60V C1 1μF 4 VCC OUT 1 VOUT ROUT 10kΩ VOUT = ISENSE x RSENSE /RG1 x GM x ROUT = 50 x ISENSE x RSENSE Figure 8: MPQ8112A (AV = 50V/V with VCM ≤ VCC) MPQ8112/MPQ8112A Rev. 1.0 www.MonolithicPower.com 7/7/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 13 MPQ8112/MPQ8112A – 60V, HIGH-SIDE CURRENT-SENSE AMPLIFIER TYPICAL APPLICATION CIRCUITS (continued) RSENSE To Load ISENSE RG1 1kΩ RG2 1kΩ 3 RG2 RG1 2 MPQ8112A 5 GND V5 5V 6 C2 0.1μF 4 2.7V to 60V Vcc OUT 1 VOUT ROUT 5kΩ C1 1μF VOUT = ISENSE x RSENSE / RG1 x GM x ROUT = 50 x ISENSE x RSENSE Figure 9: MPQ8112A (AV = 25V/V with VCM = VCC) RSENSE To Load ISENSE RG1 RG2 1kΩ 1kΩ 3 RG1 RG2 2 MPQ8112A 5 GND V5 5V 6 C2 0.1μF 4 2.7V to 60V C1 1μF Vcc OUT 1 VOUT ROUT VOUT 5kΩ VOUT = ISENSE x RSENSE / RG1 x GM x ROUT = 50 x ISENSE x RSENSE Figure 10: MPQ8112A (AV = 25V/V with Buffer to Limit VOUT_MAX < V5) MPQ8112/MPQ8112A Rev. 1.0 www.MonolithicPower.com 7/7/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 14 MPQ8112/MPQ8112A – 60V, HIGH-SIDE CURRENT-SENSE AMPLIFIER PACKAGE INFORMATION TSOT23-6L See note 7 EXAMPLE TOP MARK PIN 1 ID IAAAA RECOMMENDED LAND PATTERN TOP VIEW SEATING PLANE SEE DETAIL ''A'' FRONT VIEW SIDE VIEW NOTE: DETAIL "A" 1) ALL DIMENSIONS ARE IN MILLIMETERS. 2) PACKAGE LENGTH DOES NOT INCLUDE MOLD FLASH, PROTRUSION, OR GATE BURR. 3) PACKAGE WIDTH DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSION. 4) LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.10 MILLIMETERS MAX. 5) DRAWING CONFORMS TO JEDEC MO-193, VARIATION AB. 6) DRAWING IS NOT TO SCALE. 7) PIN 1 IS THE LOWER-LEFT PIN WHEN READING THE TOP MARK FROM LEFT TO RIGHT (SEE EXAMPLE TOP MARK). MPQ8112/MPQ8112A Rev. 1.0 www.MonolithicPower.com 7/7/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 15 MPQ8112/MPQ8112A – 60V, HIGH-SIDE CURRENT-SENSE AMPLIFIER CARRIER INFORMATION ABCD Pin1 1 ABCD ABCD ABCD 1 1 1 Feed Direction Part Number Package Description Quantity/ Reel Quantity/ Tube Quantity/ Tray Reel Diameter Carrier Tape Width Carrier Tape Pitch TSOT23-6L 3000 N/A N/A 7in 8mm 4mm MPQ8112GJAEC1–Z MPQ8112AGJAEC1–Z MPQ8112/MPQ8112A Rev. 1.0 www.MonolithicPower.com 7/7/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 16 MPQ8112, MPQ8112A60V, HIGH-SIDE, CURRENT-SENSE AMPLIFIER Revision History Revision # 1.0 Revision Date 7/7/2020 Description Initial Release Pages Updated - Notice: The information in this document is subject to change without notice. Users should warrant and guarantee that thirdparty 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. MPQ8112/MPQ8112A Rev. 1.0 www.MonolithicPower.com 7/7/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 17