TEA1654

INTEGRATED CIRCUITS DATA SHEET TEA1654 GreenChip™II SMPS control IC Product specification 2003 May 12 Philips Semiconductors Product specification GreenChip™II SMPS control IC FEATURES Distinctive features Universal mains supply operation (70 to 276 V AC) High level of integration, giving a very low external component count. Green features Valley or zero voltage switching for minimum switching losses Efficient quasi-resonant operation at high power levels Frequency reduction at low power standby for improved system efficiency (<3 W) Cycle skipping mode at very low loads; Pi < 300 mW at no-load operation for a typical adapter application On-chip start-up current source Standby indication pin to indicate low output power consumption. Protection features Safe restart mode for system fault conditions Continuous mode protection by means of demagnetization detection (zero switch-on current) Accurate and adjustable overvoltage protection (latched) Short winding protection Undervoltage protection (foldback during overload) Overtemperature protection (latched) Low and adjustable overcurrent protection trip level Soft (re)start Mains voltage-dependent operation-enabling level General purpose input for lock protection. APPLICATIONS TEA1654 Typical application areas are adapters and chargers (e.g. for laptops, camcorders and printers) and all applications that demand an efficient and cost-effective solution up to 250 W. GENERAL DESCRIPTION The Gre...