Denmark: New High-Efficiency Power Supply Design from Power Integrations Keeps LCD Monitor Standby Usage Under 80 mW.Byline: sandesh
trackingPower Integrations, the leader in high-voltage integrated circuits Integrated circuits Miniature electronic circuits produced within and upon a single semiconductor crystal, usually silicon. Integrated circuits range in complexity from simple logic circuits and amplifiers, about 1/20 in. (1. for energy-efficient power conversion, today published a new Design Engineering Report (DER-229) which details the design of a 27-watt power supply for LCD monitors and similar applications. Based on Power Integrations' TNY380PN, a member of the TinySwitch-PK product family, the design is more than 80% efficient at full load under worst-case conditions. This 15-volt main output, 5-volt auxiliary output, power supply draws comfortably less than 80mW input power when delivering 30mW to the system in standby mode A sleep mode in a portable computer that provides an almost immediate resumption of operation when turned back on. In standby mode, the hard disk and display are turned off, and the CPU is throttled down to its lowest-power state. . Such ultra-low standby consumption ensures that there is ample power available for designers to incorporate remote ON/OFF functionality without exceeding the limits of several prominent OEM (Original Equipment Manufacturer) The rebranding of equipment and selling it. The term initially referred to the company that made the products (the "original" manufacturer), but eventually became widely used to refer to the organization that buys the products and PC system integrators, and greatly exceeds the 1-watt specification of ENERGY STAR and the mandatory 500mW requirement of the European Union European Union (EU), name given since the ratification (Nov., 1993) of the Treaty of European Union, or Maastricht Treaty, to the European Community Tier 2 Ecodesign Directive for Energy-Using Products (EuP). TinySwitch-PK includes control and regulation functions that minimize power consumption at no-load. The IC also uses frequency jittering jit·ter intr.v. jit·tered, jit·ter·ing, jit·ters 1. To be nervous or uneasy; fidget. 2. To make small quick jumpy movements. to reduce the size of the EMI (ElectroMagnetic Interference) An electrical disturbance in a system due to natural phenomena, low-frequency waves from electromechanical devices or high-frequency waves (RFI) from chips and other electronic devices. Allowable limits are governed by the FCC. (electromagnetic interference See EMI. ) filter, eliminating the need for X capacitors and their associated bleed resistors (required for safety compliance), which can themselves dissipate more than 30mW. The transformer used in DER-229 was designed using Power Integrations' popular PI ExpertA; power supply design software to reduce parasitic losses between windings. High switching frequency at full load suppresses acoustic noise from the power supply and enables the use of very small magnetic components, making the new design ideally suited for slim form-factor LCD monitors and similar space-constrained applications. Comments Andrew Smith, product marketing manager at Power Integrations: "Many information technology equipment OEMs are embracing the philosophy that if low standby is good, then really low standby is even better. By delivering a power supply with a no-load consumption of less than 80mW, customers can easily meet all known standby power regulations and the most advanced market-driven requirements, while leaving a large power budget available for other circuit functions. The design is also highly efficient in normal operation, enabling PSUs that easily meet full-load efficiency requirements." Power Integrations has produced several ultra-low standby power design examples dissipating as little as 8mW no-load for low-power adapter applications. Copyright : Euclid Infotech Pvt. Ltd. Provided by Syndigate.info an Albawaba.com company |
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