Automotive-grade, high-reliability sensing and control chip solutions
Energy & Power

Energy & Power

Current sensing and power management for PV and storage, charging infrastructure, digital power and switching power supplies — covering the full path from bus to load.

The heart of any energy conversion system is measuring current accurately and reliably. RJMICRO provides linear and differential Hall current sensors covering current sampling at the MPPT input, battery charge/discharge and inverter output, complemented by wide-input automotive LDOs that supply the control and driver circuits.

Systems and scenarios covered

Solar, storage and charging

  • Photovoltaic inverters (MPPT input current, inverter output current)
  • energy storage PCS
  • charging piles and on-board chargers (OBC)
  • portable and mobile power stations

Digital power and distribution

  • Switching power supplies, DC/DC and DC/AC inverters
  • grid infrastructure and distribution
  • bus current sensing in battery management systems (BMS)

Recommended products

For Energy & Power, 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

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.