+44 (0)24 7671 8970
More publications     •     Advertise with us     •     Contact us
*/
News Article

Renesas Cuts Power to IC Supplies By Half

News

The firm's new devices for ICs lower costs and enable miniaturisation


Renesas Electronics Corporation has released the RAA23021X series of two output channel power supply ICs.

The devices provide functions such as stepping down the voltage supplied to a microcontroller (MCU) and its peripheral devices (e.g. from 5.0 V to 3.3 V) and controlling the power supply in standby mode.

These devices are suited to use in industrial, office automation, consumer, and network equipment.

Recently, the demands for miniaturisation and lower power consumption in electronic equipment have been increasing.

However, much of the time, system manufacturers construct the necessary power rails from single-output voltage regulator ICs and electronic components. This makes it difficult to achieve the required miniaturisation.

What's more, even though MCU standby mode and low power modes are an effective method to reduce and align power requirements to frequently changing system requirements, generally the power supply system hasn't been designed to also provide this support.

Addressing these problems, Renesas is now releasing the RAA23021X series of power supply ICs. They are claimed to both reduce MCU power supply system parts counts and also significantly reduce standby mode power consumption.

Renesas says its RAA23021X series of power supply ICs enable power supply system miniaturisation and lower costs . This is achieved by integration of a switching regulator and a Low-Drop-Out regulator (LDO) in the same package.

These products integrated, in a single package, allow the step-down switching regulator and LDO required in a step-down circuit as well as phase compensation components, and discharge circuits.

As a result, compared to earlier Renesas products, the number of components in a MCU power supply system can be reduced by 50 percent, thus allowing significant cost reductions and miniaturisation in application systems.

These products provide a low power consumption mode that reduces their own power consumption to 25µA during standby power saving states such as the deep software standby mode provided by Renesas MCUs. This allows total power consumption during standby mode for the MCU and power supply IC system to be reduced by over 90 percent compared to similar systems using earlier Renesas products.

The products allow one of three pattern sequences to be selected with pin settings to support configurations of power-on sequence of the devices used in the application system.

What's more, the new devices provide various protection circuits, including overcurrent protection, thermal protection, and low-voltage malfunction protection functions. Thus high-reliability power supply systems can be constructed easily with a minimum number of external components.

To support the development of system power supply designs, Renesas provides evaluation boards for these new products independently. The evaluation boards incorporate both these new products and Renesas MCUs.

The RAA23021X series consists of four products with fixed output voltages of 1.8, 2.7, 3.0, and 3.3V and one with a variable output voltage for a total of five products.

The maximum output current for the switching regulator is 3A and that for the LDO is 0.5A so that these products can provide power supply to an MCU as well as its peripheral devices.

These products are provided in a high thermal dissipation 20-pin HTSSOP package. The die pad, which takes up most of the rear surface of the package, allows high thermal dissipation mounting.

Renesas is also currently developing the RAA23022X Series, which integrates functions for switching over to battery backup if power fails. The firm also aims to expand its product line, including products with 4 output channels.

Pricing and Availability

Samples of the RAA23021X Series of power supply ICs are scheduled to be available now, priced at US$0.95 per unit. Mass production of the RAA23021X Series is scheduled to begin in February 2013 and is expected to reach a scale of 1,000,000 units per month in October 2013.

Samples of the RAA23022X Series of power supply ICs are scheduled to be available on December 2012. Pricing and availability are subject to change without notice.


×
Search the news archive

To close this popup you can press escape or click the close icon.
Logo
×
Logo
×
Register - Step 1

You may choose to subscribe to the Silicon Semiconductor Magazine, the Silicon Semiconductor Newsletter, or both. You may also request additional information if required, before submitting your application.


Please subscribe me to:

 

You chose the industry type of "Other"

Please enter the industry that you work in:
Please enter the industry that you work in: