PatelWhen Raj Patel looks down from an airplane, he doesn't see streetlamps dotting the ground. He sees potential business partners. Patel founded Ferndale-based Midwest Circuits, now a municipal ...

LED driver outputs may also be damaged or destroyed by short circuits. Most LED drivers include built-in safety features, including thermal shutdown, as well as open and short LED detection. However, ...

In production, this may be replaced with a zero Ohm resistor. The open circuit protection circuit shown utilizes R9, causing it to serve an additional function, in conjunction with Zener diode D2. In ...

For one open LED: Power Limit Circuit. A power-limit circuit can be added to the circuit in Fig. 1 to limit the overall power when there is a large voltage variation for parallel strings of LEDs, ...

As well as thermal de-rating to increase reliability, protections include LED open detection, output short circuit protection, SET pin short circuit protection (see diagram), over-voltage mute, ...

Saving the designer board space, the TPS9255x from Texas Instruments is a constant current buck LED driver micro-module family whose integrated power switch enables driving a single string of LEDs ...