Over-Temperature Protection Derating

Over-Temperature Protection Derating

Longer Bulb Operating Life with Over-Temperature Protection Derating

Dialog’s patented over-temperature protection (OTP) derating technology addresses LED bulb lifetime issues caused by excessive heat in retrofit bulb installations.

Thermal protection + lifetime extension

Most power ICs are designed with thermal shutdown, which simply shuts the IC down in high temperature environments. This protects the IC, but not the LED driver circuit, since most control IC shutdown occurs well above safe operating temperatures for electrolytic capacitors.

Dialog's temperature derating technology monitors the temperature inside the sealed SSL bulb and, in high temperatures, automatically reduces current drive to the LEDs in small, virtually imperceptible increments, then seamlessly restores brightness as temperature falls. This provides cooler operation in low airflow bulb installations, prevents exceeding the temperature rating of the electrolytic capacitors, and helps ensure a predictable and safer bulb operating life.

Related Media

Curve Diagram
Over-Temperature Protection (OTP) Video
过温保护 (OTP) 视频
과열보호 (OTP) 비디오

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