Power semiconductors deliver high energy efficiency

The LinkSwitch-TN2 AC/DC converter devices offer excellent load and line regulation and deliver high flexibility with support for buck, boost and flyback topologies.

This makes them ideal for engineers designing non-isolated offline switching power supplies for a range of markets including appliances, metering and smart LED drivers, as well as IoT and home and building automation applications.

LinkSwitch-TN2 ICs offer a selectable device current limit for design flexibility.

Family protection features include auto-restart for short-circuit and open loop faults, which limits power delivery to 3% of maximum, in addition to output overvoltage protection (OVP), input overvoltage protection and over-temperature protection (OTP).

The HiperPFS-4 family of PFC controller chips is optimised for a high power factor and high efficiency across various load ranges.

Eliminating the need for external current-sense resistors and their associated power loss, the family offers high levels of integration and includes a 600V-rated MOSFET to deliver a very small PFC stage form factor.

Targeting a wide selection of applications including appliances, high-power adapters and high-power LED lighting, plus consumer and computing devices, key features of the HiperPFS-4 family include: greater than 95% efficiency from 10% to 100% load; less than 60 mW no-load consumption at 230 V AC; a power factor of greater than 0.95, achievable at 20% load; and EN61000-3-2 Class C and D compliance.

Protection features include overvoltage, under-voltage lockout, OTP, and cycle-by-cycle current and power limits for overload protection.

The LinkSwitch-TN2 offline switcher ICs and the HiperPFS-4 PFCs are shipping now from RS in the EMEA and Asia Pacific regions.