AC-DC converter IC set to do away with energy-wasting linear transformer adapters
23 October 2002
Power Electronics / Power Management
What is said to be a revolutionary switching power supply IC, that cost-effectively replaces inefficient linear transformer designs in adapters and battery chargers rated at 3 W and below, has been announced by Power Integrations.
The 'LinkSwitch' (derived from phrase 'Linear Killer Switch'), is a highly integrated high-voltage power conversion IC designed specifically to displace low power linear transformers by delivering switcher benefits. This means smaller size, lighter weight, superior performance and energy efficiency - at equal or lower system cost, according to the company.
With as few as 14 components, the LNK501 can enable a fault protected, universal input (85 to 265 V a.c.), constant voltage, constant current (CV/CC) output switching power supply that meets worldwide energy efficiency standards.
The LinkSwitch family is based on the same technology as the company's widely used TOPSwitch product lines. It combines a 700 V power MOSFET, PWM controller, high voltage start-up, current limit, and thermal shutdown circuitry onto a single CMOS chip.
LinkSwitch introduces a revolutionary topology for low power switching supplies that rivals the simplicity and low cost of linear supplies. The part uses a novel primary-based CV/CC solution that combines the primary clamp, feedback, IC supply and loop compensation functions. This eliminates up to twenty external components typically found in alternative switcher designs. This CC power supply output characteristic is ideal for many low cost battery chargers, providing overload protection under output short circuit conditions.
Requiring only three terminals, LinkSwitch includes a number of built-in features including thermal and current limit protection, auto-restart for short circuit and open loop fault protection, and the company's EcoSmart technology which reduces the energy consumption of the power supply during standby and no-load conditions. This enables engineers to design converters that easily meet government energy guidelines such as energy star, blue angel, the EC code of conduct, and others.
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