Texas Instruments Inc. introduced a new
single-stage LED lighting pulse width
modulation (PWM) controller. The TRIAC-dimmable solution regulates LED current
and also achieves near unity power factor. The reference design can achieve 85
percent efficiency, which enables high-density, small form factor designs. The TPS92210 is designed for general
lighting applications, such as commercial and residential recessed, troffer,
light bulb replacement, architectural and display lighting.
features flexible operation modes such as peak primary current, constant
on-time and frequency modulation. The constant on-time mode provides
single-stage power factor correction for improved efficiency.
cascoded MOSFET configuration results in 10 percent lower switching losses with
fast and easy high-voltage start-up compared to competitive devices.
Continuous linear TRIAC dimming provides flicker-free, uniform control.
Multiple protection features, such as over voltage protection without
optocouplers, thermal shutdown and advanced over current, safely shut down the
system if fault conditions exist.
Programmable fault response, full shutdown and shutdown restart provide added
flexibility for fault response.
The National Highway Traffic Safety Administrationís recent backup camera mandate could open the door to more vehicle innovations, including better graphical displays, 360-degree camera views, and the increased use of Ethernet.
With support from National Instruments, a group of dedicated students from Connally High School in Austin, where more than 50% of the students are at risk of not graduating, have created a successful robotics team that is competing in the FIRST World Championships.
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