Automotive-grade, high-reliability sensing and control chip solutions
Automotive Electronics

Powertrain

Covering transmission, fuel tank, engine peripherals and traction systems — chip solutions for electronic shifters, urea pumps, electronic oil pumps, electronic throttle, EGR valves, turbo actuators, fuel level and crank/cam position sensing.

Powertrain Powertrain

Chip technology underpins innovation, electrification and intelligence across the automotive industry, and powertrain is one of RJMICRO core application areas, spanning both internal-combustion and electric drive systems.

On the electric drive side, linear and integrated current sensors handle three-phase traction inverter current sensing. On the combustion side, Hall switches and latches, 3D position Hall sensors, linear Hall sensors and camshaft / crankshaft position sensors form a complete position and speed sensing solution.

Systems and scenarios covered

Internal-combustion systems

  • Electronic shifters
  • urea pumps and electronic oil pumps
  • electronic throttle and EGR valves
  • turbocharger actuators
  • fuel tank level sensing
  • crankshaft and camshaft position sensing

Electric drive systems

  • Linear current sensors (three-phase traction inverter current sensing)
  • integrated current sensors
  • transmission speed sensing

Recommended products

For Powertrain, the following RJMICRO devices can be designed in directly — open a device to see full specifications and datasheets.

RJM2310 / RJM2311
RJM2310 / RJM2311

Automotive-grade Linear Hall Current Sensor

In Production

Programmable sensitivity from 0.5 mV/G to 11.5 mV/G, 240 kHz bandwidth, 2.2 µs response and ±1% sensitivity error over the full temperature range — built for three-phase traction inverter current sensing.

RJSENSE · Smart Sensors TO-94-4L
RJM2120
RJM2120

Differential Hall Current Sensor

Sampling

Differential Hall architecture with strong common-mode stray-field immunity. Pin-to-pin compatible with ACS724 / MLX91220 for traction inverter and power-supply current sensing.

RJSENSE · Smart Sensors SOP8 / SOW10 / SOW16
RJM3143
RJM3143

TMR 3D Position / Angle Sensor

Sampling

TMR tunnel-magnetoresistance analog output with highly sensitive 3D magnetic field detection for angle and position measurement. Pin-to-pin compatible with TDK TAS2143.

RJSENSE · Smart Sensors TSSOP8
RJM1013 / RJM1023
RJM1013 / RJM1023

Automotive-grade Vertical / Planar Hall Latch

In Production

3.3 V–24 V wide supply, 40 V load-dump and reverse-polarity protection, symmetric switching points producing a near-50% duty square wave — an ideal choice for motor commutation.

RJSENSE · Smart Sensors SOT23-3L / TO92S-3L
RJM4988C
RJM4988C

Programmable TPO Camshaft Position Sensor

In Design

Chopper-stabilized Hall with True Power-On (TPO) capability, supporting 5 kHz camshaft magnetic field detection. A single-chip integrated capacitor reduces BOM cost and PCB area.

RJSENSE · Smart Sensors TO94-A-3L (capacitor integrated in package)
RJM4929C / RJM4920
RJM4929C / RJM4920

Crankshaft / Transmission Speed Sensor

In Design

For crankshaft and transmission speed measurement, pin-to-pin compatible with TLE4929 / A19520, delivering highly reliable speed signals to the powertrain.

RJSENSE · Smart Sensors TO-94
RJR710xx-Q1 / -QD
RJR710xx-Q1 / -QD

150 mA, 40 V Ultra-low Quiescent Current Automotive LDO

In Production

3 V–40 V wide input with fixed 3.3 V / 5 V output, 5.5 µA typical quiescent current and 800 nA shutdown current — ideal for always-on systems connected directly to the battery.

RJPOWER · Automotive Power & Driver DFN-8 / SOT-223-4 / SOP8-EP
RJR81xxx / RJR83xxx / RJR85xxx
RJR81xxx / RJR83xxx / RJR85xxx

150 / 300 / 450 mA, 60 V Ultra-low Quiescent Current Automotive LDO

In Design

3 V–60 V wide input with up to 45 V transient tolerance; fixed 1.8/2.5/3.3/5 V and adjustable 1.8 V–15 V outputs covering the current range of 12 V / 48 V systems.

RJPOWER · Automotive Power & Driver SOP8-EP / DFN-8

Other application areas

01

Chassis Systems

Covering electric power steering (EPS), braking and suspension systems with angle, speed and position sensing …

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02

Thermal Management

Covering air conditioning, PTC heaters, valves and pumps — a one-stop chip solution for electronic water pumps…

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03

Body Electronics

Covering windows, door handles, power tailgates, sunroofs, seats, electronic wipers and charge-port doors with…

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04

Automotive Lighting & Smart Cockpit

Control and drive for dynamic ambient lighting, smart surfaces, interior and exterior lamps and reading lights…

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05

Industry & Robotics

Current sensing, position feedback and speed measurement for servo drives, robot joints, industrial inverters …

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06

Energy & Power

Current sensing and power management for PV and storage, charging infrastructure, digital power and switching …

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07

E-Two-Wheelers & E-Tricycles

Motor control, phase current sensing, throttle/pedal sensing and complete vehicle power solutions for e-bikes,…

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08

Drones & Mobile Robots

Motor current sampling, angle and position feedback and over-current protection for multi-rotor drones, gimbal…

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09

White Goods & Variable-frequency Motors

Inverter compressor and fan drive, phase current sensing and speed/position feedback for air conditioners, ref…

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10

Smart Home

Motor drive, position sensing and power solutions for smart locks, motorized curtains, robot vacuum actuators …

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11

Consumer Electronics & Wearables

Position sensing, motor drive and power management for wearables, personal-care appliances and portable consum…

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Need selection support or samples?

Our application engineers work from your system design and provide magnet selection, field simulation, motor system support and reference designs.