Boncuk
New Member
NXP semiconductors has brought about a new IC ( UBA2028) to control CFLs.
The chip offers flicker free start and and dim function.
Here are some details:
UBA 2028 Features
- Two internal 600 V, 3 max MOST half bridge powers.
- For steady state currents up to 280 mA.
- For ignition currents up to 1.5 A.
- Adjustable preheat time.
- Adjustable preheat current.
- Current controlled operating.
- Single ignition attempt.
- Adaptive non-overlap time control.
- Integrated high voltage level shift function.
- Power-down function.
- Protection against lamp failures or lamp removal.
- Capacitive mode protection.
Applications
5 W to 25 W dimmable CFLs, provided that the maximum junction temperature is not
exceeded.
The datasheet contains two full application schematics for 120 and 230V.
Boncuk
The chip offers flicker free start and and dim function.
Here are some details:
UBA 2028 Features
- Two internal 600 V, 3 max MOST half bridge powers.
- For steady state currents up to 280 mA.
- For ignition currents up to 1.5 A.
- Adjustable preheat time.
- Adjustable preheat current.
- Current controlled operating.
- Single ignition attempt.
- Adaptive non-overlap time control.
- Integrated high voltage level shift function.
- Power-down function.
- Protection against lamp failures or lamp removal.
- Capacitive mode protection.
Applications
5 W to 25 W dimmable CFLs, provided that the maximum junction temperature is not
exceeded.
The datasheet contains two full application schematics for 120 and 230V.
Boncuk