Switcher ICs for high-efficiency power supplies deliver 175 W
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Power Integrations has announced the TinySwitch™-5 ICs for high-efficiency power supplies, increasing the output power of the most popular family of integrated off-line switcher ICs to 175 W.
The switcher ICs achieve an efficiency of up to 92 percent through basic diode rectification and optocoupler feedback. They feature an advanced control engine that seamlessly manages the switching frequency and power delivery to maximise efficiency, even under light loads. This capability enables power supplies to easily meet the light-load power consumption limit of 300 mW, set by the European Commission Energy-related Products (ErP) Directive 2009/125/EC, while still providing up to 220 mW output power for display, controls, and communications functions. An enhanced thermal package means that TinySwitch-5 ICs can deliver up to 75 W without a heatsink, and line under- and over-voltage protection ensures robustness for use in countries with unstable mains power.
With more than six billion units sold globally, TinySwitch ICs are widely used in bias and auxiliary supplies in appliances, computing, communications, industrial, and medical applications. TinySwitch ICs were the first to incorporate Power Integrations’ award-winning EcoSmart™ technology, which has saved an estimated 200 terawatt-hours of electricity since 1998 by significantly reducing standby power waste.
Silvestro Fimiani, Director of Product Marketing at Power Integrations, stated: “TinySwitch has become the gold standard for small power supplies because of its efficiency and ease of use. With TinySwitch-5, designers can scale up to 175 W at maximum power while easily achieving 220 mW of output and meeting the needs of appliance manufacturers subject to the European Union ErP-mandated 300 mW standby power rule.”
Pricing for TinySwitch-5 starts at $0.35 for 10,000 units. Reference designs are available, which describe a 12 W single-output power supply (DER-1017), a 26.5 W dual-output power supply with excellent standby efficiency (RDR-1016), a 36 W single-output power supply with high efficiency at light load (DER-1040), and a 120 W power supply with 92 percent efficiency at 230 V AC (DER-1027).
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