700V buck regulators have low power consumption for smart home sensing

700V buck regulators in the RAA2230XX family are claimed to deliver superior power consumption, noise and EMI suppression, as well as reduced overall system cost compared with competing alternatives. The devices can be used in a range of applications, including home appliances, sensing systems such as smoke alarms and gas sensors, white goods, power meters and industrial controls.

The RAA2230XX buck regulators consume only 10 to 30mW when idle, helping system designers meet standby power regulations. A switching algorithm minimises electromagnetic interference (EMI) and eliminates audible noise, such as ‘humming’ or ‘whining’, says Renesas. The regulators also can supply as low as 3.3V output, enabling designers to eliminate a second-stage low dropout regulator (LDO), saving bill of materials (BoM) cost and board space.

The buck regulators connect to the AC line to power Renesas MCUs, sensors and other digital ICs. Renesas has developed Winning Combinations, consisting of complementary analogue, power, timing devices and embedded processing, simplifying the design process. There is, for example the household smoke detector with a turnkey architecture for a residential smoke alarm, which is suitable for smart industrial control terminals.

The RAA2230XX buck regulators are available in TSOT23-5, SOIC-8 and SOIC-7 package options. They are pin-to-pin compatible with competitors’ products for easy replacement

The new 700V RAA2230XX buck regulators (2.0, 4.0 and 8.0W versions) are available today. Renesas also offers evaluations boards for different package and output combinations.

Renesas Electronics delivers embedded design with microcontrollers, analogue, power, and SoC products for a broad range of automotive, industrial, infrastructure, and IoT applications.


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