400 mA step-down converters help increase battery life in portable devices
11 February 2004
Power Electronics / Power Management
Extending efforts to improve system run-times in application processor-powered and digital signal processing-based portable devices, Texas Instruments designed and has released a family of 400 mA, synchronous DC/DC step-down converters with ultra-low quiescent current and up to 95% power efficiency. The new high performance power management converters (TPS6222x family) are suited for portable systems powered by single-cell lithium-ion (Li-Ion) or three-cell alkaline or nickel metal-hydride (NiMH) batteries.
These step-down converters support an input voltage range from 2,5 to 6 V, an output voltage range of 6 V down to 0,7 V and output current up to 400 mA. The converters operate with a fixed switching frequency of 1,25 MHz (typical). To provide additional power savings, the TPS6222x enters a 'power save mode' operation at light load currents. In this mode, the manufacturer says that the switching frequency is reduced and quiescent current is typically only 15 µA, resulting in the highest efficiency over the entire load current range. Additionally, an advanced fast response voltage mode control scheme achieves excellent line and load regulation with small ceramic input and output capacitors.
For more information contact Analog Data Products, a division of Avnet Kopp, 011 809 6100.
Further reading:
Powering the IoT
Uniross Batteries
Power Electronics / Power Management
Choosing the right battery is not simply a technical detail, but a defining factor in the longevity and cost-effectiveness of any IoT deployment.
Read more...
The move to DC infrastructure
IOT Electronics
Power Electronics / Power Management
The shift toward direct current infrastructure in data centres is accelerating as operators pursue higher efficiency, improved reliability, and stronger alignment with renewable energy goals.
Read more...
Power inductor for automotive applications
Würth Elektronik eiSos
Power Electronics / Power Management
The WE-MXGA inductor features RDC values up to 25% lower and a saturation current up to 47% higher compared to other components currently available on the market.
Read more...
High-performance DC-DC converter
Conical Technologies
Power Electronics / Power Management
With a wide 9 - 40 V DC input range, the Claf Power DWHB400-F24xxN series is a high-performance DC-DC converter family ideally suited for 12 V and 24 V battery-based systems including vehicles, off-grid installations, and distributed power architectures.
Read more...
DC-DC converters for next-generation IoT
iCorp Technologies
Power Electronics / Power Management
AIPUPOWER’s K78XXJT-500R3 and K78XXJT-500R3-LB give designers a compact, high-efficiency power option for battery-powered and space-constrained systems, combining up to 96% efficiency with no-load input current as low as 0,2 mA.
Read more...
240 W in compact form factor
Brabek
Power Electronics / Power Management
The cost-effective and reliable RECOM RACPRO1-S240E DIN-rail mount AC-DC series is only 125 x 139 mm and 39 mm wide, yet provides 240 W output.
Read more...
You cannot manage what you cannot measure
Power Electronics / Power Management
South African sites are generating solar energy. Most still have no idea what is consuming it… or when, or why. Intelligent load management hardware is changing that.
Read more...
Scalable and intelligent power solution
Power Electronics / Power Management
Designed for Africa’s rapidly evolving energy landscape, Bluetti’s ES125 offers a scalable, intelligent power solution that delivers reliable and cost-efficient electricity for uninterrupted operations.
Read more...
Simulating grid abnormalities
Conical Technologies
Power Electronics / Power Management
Simulating grid abnormalities has become an essential part of validating systems such as inverters, UPS units, photovoltaic inverters, and EV charging infrastructure.
Read more...
Evaluation board for STPMIC25 PMIC
Power Electronics / Power Management
The STEVAL-PMIC25V1 is a power management IC evaluation board for the highly integrated STPMIC25, which is designed to manage the power requirements of the core, memory, and interfaces of the STM32MP2x series MPU.
Read more...
printer friendly version