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.
Automotive-grade Linear Hall Current Sensor
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.
Differential Hall Current Sensor
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.
Automotive-grade Vertical / Planar Hall Latch
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.
150 mA, 40 V Ultra-low Quiescent Current Automotive LDO
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.
150 / 300 / 450 mA, 60 V Ultra-low Quiescent Current Automotive LDO
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.
Other application areas
Powertrain
Covering transmission, fuel tank, engine peripherals and traction systems — chip solutions for electronic shif…
View solutions 02Chassis Systems
Covering electric power steering (EPS), braking and suspension systems with angle, speed and position sensing …
View solutions 03Thermal Management
Covering air conditioning, PTC heaters, valves and pumps — a one-stop chip solution for electronic water pumps…
View solutions 04Body Electronics
Covering windows, door handles, power tailgates, sunroofs, seats, electronic wipers and charge-port doors with…
View solutions 05Automotive Lighting & Smart Cockpit
Control and drive for dynamic ambient lighting, smart surfaces, interior and exterior lamps and reading lights…
View solutions 06Industry & Robotics
Current sensing, position feedback and speed measurement for servo drives, robot joints, industrial inverters …
View solutions 07Energy & Power
Current sensing and power management for PV and storage, charging infrastructure, digital power and switching …
View solutions 08E-Two-Wheelers & E-Tricycles
Motor control, phase current sensing, throttle/pedal sensing and complete vehicle power solutions for e-bikes,…
View solutions 09Drones & Mobile Robots
Motor current sampling, angle and position feedback and over-current protection for multi-rotor drones, gimbal…
View solutions 10Smart Home
Motor drive, position sensing and power solutions for smart locks, motorized curtains, robot vacuum actuators …
View solutions 11Consumer Electronics & Wearables
Position sensing, motor drive and power management for wearables, personal-care appliances and portable consum…
View solutionsNeed selection support or samples?
Our application engineers work from your system design and provide magnet selection, field simulation, motor system support and reference designs.