Conversion IC exceeds energy-efficiency standards
Integrated offline switcher IC reduces power supply component count by 30%
The LinkSwitch-II family of integrated ac/dc switched-mode power-conversion ICs with primary-side control simplifies constant-voltage, constant-current converters, and helps consumer products meet all global energy-efficiency and no-load regulations, including Energy Star 2.0 for external power supplies. The new ICs are suitable for applications such as chargers for cell phones and cordless phones, and high-brightness LED drivers. A charger designed with the IC has nine fewer components compared to the previous generation of LinkSwitch and up to 15 fewer components when compared to discrete designs.
The series of ICs uses primary-side regulation to control the output current and voltage and simplifies the design of accurate output CV/CC converters by eliminating the need for optocouplers and all secondary-side CV/CC control circuitry as well as all control-loop compensation circuitry. All control and protection circuitry plus a 700-V MOSFET are integrated in an 8-pin package. Output CV/CC tolerances of ±5% and ±10%, respectively, are achieved from 0° to 100°C by incorporating precision-enhancing features that compensate for transformer inductance tolerances, input line variations, output cable voltage drop (LNK61x only), and external component temperature variations. (From $0.60 ea/10,000 — available now.)
Power Integrations , San Jose , CA
Sales 408-414-9200
Advertisement
Learn more about Power Integrations
