The ST1PS01 / ST1PS02 / ST1PS03 devices from STMicroelectronics are a family of nano-quiescent miniaturized synchronous step-down converters. The devices are able to provide up to 400 mA output current with an input voltage ranging from 1.8 V to 5.5 V. This converter series has been specifically designed for applications where high efficiency, PCB size and thickness are critical factors such as battery-powered and energy-harvesting applications, as it ensures a highly efficient conversion regardless of the power source.
The ST1PS01 / ST1PS02 / ST1PS03 miniaturized step-down regulators draw a quiescent current of just 500 nA, this new generation of buck converters requires a minimal set of external components thanks to the integrated power switch, synchronous rectifier, and integrated compensation network.
See below overview of the ST1PS01 / ST1PS02 / ST1PS03 devices:
ST1PS01 – Featuring an output voltage that can be set using two digital control inputs, a VOUT from 0.625 V to 3.3 V can be dynamically selected.
ST1PS01 Application Schematic from ST Datasheet
ST1PS02 – With an output voltage that can be set using three digital control inputs, a VOUT from 1.0 V to 3.3 V can be dynamically selected. The device embeds a controlled load switch to supply a subsystem with same voltage rail. Advanced design circuitry is implemented to minimize the quiescent current.
ST1PS02 Application Schematic from ST Datasheet
ST1PS03 – Output voltage can be set using three digital control inputs, a VOUT from 1.6 V to 3.3 V can be dynamically selected. An advanced design circuitry is developed to minimize the quiescent current and the device embeds a controlled switch accessible from VIN_AUX, to supply a subsystem.
ST1PS03 Application Schematic from ST Datasheet
All three models feature enhanced PCC (peak current control) enabling very high efficiency conversion using just a 2.2 µH inductor and two small capacitors.
The ST1PS01 / ST1PS02 / ST1PS03 devices are part of STMicroelectronics 10 Years longevity commitment giving developers added confidence when incorporating them into new designs
See the product overview video for the ST1PS01/2/3 devices below
The high efficiency and small PCB size and thickness requirement for the ST1PS01 / ST1PS02 / ST1PS03 devices make them ideal for power conversion solutions in wearable applications and fitness accessories, personal tracking monitors, smart watches, sports bands, energy harvesting, wireless sensors, industrial sensors, portable low power devices, single cell Li-Ion battery applications and Bluetooth® low energy and Zigbee applications.
Evaluation Board
The ST1PS01 / ST1PS02 / ST1PS03 devices are supported by a range of evaluation boards, these boards allow developers to experiment with the various features of the ST1PS01 / ST1PS02 / ST1PS03 nano-quiescent synchronous step-down converters and are available with different output voltage options, helping developers to greatly reduce the time to market.
The ST1PS01 / ST1PS02 / ST1PS03 nano-quiescent miniaturized synchronous step-down converters are also supported within the STMicroelectronics eDesignSuite, this comprehensive set of easy-to-use design-aid utilities is ready to help you streamline the system development process with a wide range of ST products. In addition STMicroelectronics have integrated eDSim, a fast and powerful electrical simulation software to speed up SMPS designs into eDesignSuite, this allows designers to develop switched-mode power supplies or analog circuits with eDesignSuite, get a quick preview with fully annotated schematic and BOM, and then export the project to eDSim for fast and accurate electrical simulations and reliable design validation.
Anglia are offering customers FREE samples of the ST1PS01 / ST1PS02 / ST1PS03 nano-quiescent synchronous step-down converters from STMicroelectronics, please fill in the form below to register your interest now.
FREE samples for UK and Ireland customers only, subject to availability.
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