Reference designs for standby power supplies
Power Integrations
Standby power supply reference designs
Power Integrations has published two standby power supply reference designs using its Topswitch-JX IC product family, targeting applications that require more than 90 per cent full-load efficiency.
The company said Topswitch-JX devices feature multi-mode control, minimising power wasted in standby and delivering maximum efficiency over a range of operating loads.
The reference designs target applications that require more than 90 per cent full-load efficiency to meet standards such as the 80 PLUSa Gold or Silver PC specifications, EuP Lot 6 standby rules, or the new California requirements for TV power usage.
DER-246 is a general-purpose evaluation platform and describes a PC standby power supply based on Topswitch-JX Top265EG that operates from 110VDC to 400VDC input and provides >91 per cent efficiency at 12V, 15W.
DER-247, based on Topswitch-JX Top264EG, describes a supply for a similar application operating from 110VDC to 400VDC input and providing >87 per cent efficiency at 5V, 10W.
For TV and other consumable products, the designs make 20mW available to the load for just 100mW of input power.
Topswitch-JX is a highly integrated family of 16 power conversion ICs incorporating a 725V power Mosfet for use in flyback power supplies.
The Topswitch-JX multi-mode control algorithm maximises power efficiency across the entire load range.
High efficiency at full power minimises power wasted during normal operation and reduces the complexity and expense of thermal management on the system.
At low power levels, high efficiency enables adapters with low no-load consumption and maximises power available to the system in standby mode for applications constrained by standards and regulatory controls.
Related images
Request more information
More stories
PI Expert Suite includes thermal calculations for improving heatsink performance
Power Integration’s PI Expert Suite Version 8.5 is a piece of power supply design productivity software that is compatible with the company’s HiperLCS range of high-frequency LLC converter ICs and its TOPSwitch-JX series of integrated offline switcher ICs.
Power-supply ICs designed for slim LED-backlit TVs and PC main power systems
Power Integrations has introduced HiperLCS, a range of high-voltage LLC power-supply ICs that incorporate the controller, high- and low-side drivers and both MOSFETs into a single package, making them suitable for applications such as slim LED-backlit TVs, PC main power, servers, telecoms and networking equipment, LED streetlights and laser printers.
15W LED downlight driver uses active damping for flicker-free dimming
Power Integrations 15W PAR38 LED downlight driver for high-voltage integrated circuits, the Linkswitch-PH, allows flicker-free dimming and is 85 per cent efficient.
Power Integrations offers design example report for high-efficiency 900W power supply download
Power Integrations has published DER-274, a new design example report that describes a 900W power supply with 97 per cent efficient active power factor correction (PFC), designed for use in white goods, blowers, motor control drives and computing applications.
Power Integrations releases compact 25W LED lighting ballast reference design for T8 tubes download
Power Integrations has published the DER-287 reference design for a 25W LED T8 tube ballast power supply designed to reach 91 per cent efficiency and to be used in commercial and industrial lighting.
