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Power Integrations, Inc. (NASDAQ stock symbol: POWI) today released a new design project report (DER-229), for details on a similar LCD display and the application of 27 W power supply circuit design.

Based on the new Power Integrations Power TinySwitch-PK family of devices designed TNY380PN one, in the worst conditions when loaded with more than 80% efficiency. The power supply has a 15 V main output and auxiliary output of 5 V, it can be in standby mode for the system to provide 30 mW of power, while the input power is less than 80 mW. Due to very low standby power consumption, so that designers have sufficient budget to integrated remote power ON / OFF function, which will not exceed the number of well-known OEM PC systems integrators the power limits, but also significantly exceed Energy Star 1 W norms, as well as the second phase of the European Union (Tier 2) Energy Products (EuP) Directive environmental design of the mandatory requirements of 500 mW.

TinySwitch-PK has a regulatory function control and can reduce the power of the no-load power consumption. In addition, IC also features the use of frequency modulation to reduce EMI (electromagnetic interference) filter size, as there is no need X and its associated capacitor discharge resistance (to meet the necessary security), it can save consumption of these components is beyond their more than 30 mW of power.

DER-229 of the transformer using the popular Power Integrations Power design software designed PI Expertä, between windings to reduce parasitic loss. Fully loaded, can inhibit the high switching frequency power supply noise and allow the use of very small magnetic components, so the new design is ideal for slim LCD monitors and similar space-constrained applications.

Power Integrations, product marketing manager Andrew Smith said: "A lot of information technology equipment OEM manufacturers believe in this philosophy: a low standby power consumption is very good, but the realization of 'lower' of the standby power consumption will be better. As long as the design No-load power consumption less than 80 mW of power, manufacturers can easily meet the needs of all of the standby power requirements are known and the most cutting-edge market requirements, while other circuit functions for the realization of sufficient power to stay out of the budget. In addition, the new design under normal working conditions with very high energy efficiency, which makes the design of the PSU can easily meet the requirements of full efficiency. "

Power Integrations has developed a variety of ultra-low standby power of design examples for the application of low-power adapter, the design of no-load power can be as low as 8 mW.