MPQ8112/MPQ8112A 60V, High-Side Current-Sense Amplifier, AEC-Q100 Qualified DESCRIPTION FEATURES The MPQ8112 and MPQ8112A are low-cost, Low-Cost, Compact Current-Sense Solution unipolar, high-side current-sense amplifiers. 700kHz Bandwidth The devices operate from a 2.7V to 60V supply 300A Typical Supply Current and typically consume a 300A current. They 2.7V to 60V Operating Supply Voltage are ideal for todays automotive systems, 0V to 60V Common Mode Input Range industrial supplies, and systems where 0.2A Typical Shutdown Current battery/DC current monitoring is critical. 300V Input Offset Voltage High-side current monitoring is especially useful Available with Fixed 50V/V Gain in battery-powered systems, since it does not (MPQ8112), or Adjustable Gain interfere with the ground path of the battery (MPQ8112A) charger. The common mode input ranges 1% Current-Sense Gain Accuracy between 0V and 60V with a 700kHz high High-Current Sensing Capabilities bandwidth. That makes these devices suitable Available in a 6-Lead TSOT23 Package for use in inside control and short-circuit Available in AEC-Q100 Grade 1 protection loops. APPLICATIONS The MPQ8112 directly converts a differential Advanced Driver Assistance Systems input voltage to a voltage output with built-in (ADAS) internal common input resistors and a load Sensor Fusion Systems resistor. The MPQ8112 has a 50V/V gain. Electric Power Steering (EPS) Systems The MPQ8112A converts the differential input Electronic Stability Control (ESC) Systems voltage to a current output. This current is Brake Systems converted back to a voltage with an external Battery-Operated Systems load resistor. The MPQ8112A has an Energy Management Systems adjustable gain based on the external common input resistors and load resistor. All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For MPS green status, please visit the MPS website under Both the MPQ8112 and MPQ8112A are Quality Assurance. MPS, the MPS logo, and Simple, Easy Solutions are trademarks of Monolithic Power Systems, Inc. or its subsidiaries. available in TSOT23-6L packages. MPQ8112 FAMILY VERSIONS Part Number Output Gain MPQ8112 50V/V MPQ8112A Adjustable MPQ8112/MPQ8112A Rev. 1.0 www.MonolithicPower.com 1 7/7/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2020 MPS. All Rights Reserved. MPQ8112/MPQ8112A 60V, HIGH-SIDE, CURRENT-SENSE AMPLIFIER TYPICAL APPLICATIONS R To Load SENSE 0V V V CM CC I SENSE RG2 RG1 MPQ8112 V5 GND V OUT OUT V 2.7V To 60V CC V = 50 x I x R OUT SENSE SENSE Figure 1: MPQ8112 (Voltage Output) R To Load SENSE 0V V V CM CC I SENSE RG1 RG2 MPQ8112A GND V5 I OUT OUT V 2.7V To 60V CC R OUT V = I x R / R x G x R OUT SENSE SENSE G1 M OUT Figure 2: MPQ8112A (Current Output) MPQ8112/MPQ8112A Rev. 1.0 www.MonolithicPower.com 2 7/7/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2020 MPS. All Rights Reserved. R G1 R G2