Beijing (November 3, 2021) – Texas Instruments (TI) (NASDAQ Code: TxN) today launched a new bidirectional buck / boost converter with an ultra-low quiescent current (IQ) of 60NA, which is one third of the IQ of similar competitive boost converters. Tps61094 step-down / step-up converter integrates step-down super capacitor charger and step-up DC-DC converter, and provides ultra-low quiescent current. Compared with the current hybrid layer capacitor (HLC) scheme, the scheme of tps61094 with super capacitor can help engineers prolong the battery life by up to 20%. The strong discharge capacity of super capacitor helps to support relatively large peak load, which is very important for battery powered industrial applications such as intelligent instruments, smoke detectors and visual doorbells, as well as medical applications requiring long standby.

  

Engineers designing battery powered systems often face a common challenge: the need to achieve high efficiency under no-load or light load (in the low current range of Ma or microampere). This requires the power supply to have a continuous and stable output while maintaining an ultra-low quiescent current at the nano ampere level. The tps61094 uses an integrated bidirectional buck / boost converter architecture, which simplifies the system design, and has both large output current and ultra-low quiescent current, thus prolonging the battery life. For more information, see the technical article “3 benefits of using a low IQ buck / boost converter to extend the battery life of the flowmeter”.

Through the charge and discharge management of super capacitor, it supports high peak load and ultra-low quiescent current

Nowadays, designs based on lithium thionyl chloride (Li / SOCl? 6? 0) batteries usually need an expensive HLC in parallel to support the management of large peak loads, but this is not the most cost-effective solution. Tps61094 combines 60NA ultra-low quiescent current and integrated supercapacitor charge and discharge management circuit, supports engineers to use supercapacitor instead of HLC to support large peak load, and extends the battery life by up to 20% in applications powered by disposable battery and requiring continuous operation for more than 10 years. For the application of tps61094 in intelligent instrument system, please read the application manual tps61094 for intelligent instruments, providing long-life and cost-effective solutions.

Similarly, the tps61094 can provide a backup power management scheme when a safe power failure or power failure is required. For more information, read the technical article “effective ways to use supercapacitors to provide backup power”.

Double output current of similar super power boost DC-DC converter

In addition to extending the battery life, TI’s ultra-low power buck / boost converter tps61094 has an inductive current limiting capability of 2A in boost mode. Therefore, the output current of tps61094 is twice that of competitive boost converters.

The strong output current capability enables the tps61094 to support wider input voltage and more kinds of wireless transceiver modules, such as narrowband Internet of things (NB IOT), lte-m and wi sun ®、 MIOTY、Bluetooth ® And wireless M-BUS. For example, the tps61094 can support a continuous output current of more than 250mA and an input voltage as low as 0.7V.

Simplify system design and save up to 50% of peripheral circuit components

Typical industrial applications such as intelligent instruments require multiple circuit components to realize standby power management and support high current load. After the buck charger and boost converter are integrated in a single chip, the discrete buck charger, inductor and two external capacitors can be omitted, which can reduce the number of components by 50% and maximize the space of the circuit board.

Packaging and supply

Tps61094 is now available through Ti and authorized distributors. The device is packaged in 2.0mm x 3.0mm, 12 pin WSON. The minimum number of packages and non-standard number of tapes can be obtained at ti.com.cn and other channels. Ti.com.cn also provides tps61094evm-066 evaluation board. Ti.com.cn can choose a variety of payment methods and delivery methods.

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