Automotive-grade, high-reliability sensing and control chip solutions
Home Appliance & Living

White Goods & Variable-frequency Motors

Inverter compressor and fan drive, phase current sensing and speed/position feedback for air conditioners, refrigerators, washing machines and other white goods.

Variable-frequency home appliances are extremely sensitive to cost and noise: current sensing accuracy directly affects FOC performance and acoustic noise, while component cost must be squeezed to the minimum. RJMICRO combines highly integrated current sensors with Hall switches to help appliance makers meet efficiency targets while reducing system BOM cost.

Systems and scenarios covered

Variable-frequency drives

  • Inverter compressors and outdoor fans: phase current sensing and speed feedback
  • direct-drive inverter washing machines: position sensing and commutation

Appliance electrical systems

  • Main control supply and LDO regulation
  • lid and dispenser position sensing

Recommended products

For White Goods & Variable-frequency Motors, 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
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
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

Powertrain

Covering transmission, fuel tank, engine peripherals and traction systems — chip solutions for electronic shif…

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02

Chassis Systems

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

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03

Thermal Management

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

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04

Body Electronics

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

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05

Automotive Lighting & Smart Cockpit

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

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06

Industry & Robotics

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

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07

Energy & Power

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

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08

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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09

Drones & Mobile Robots

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

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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.