TEA1731TS/1

The TEA1731TS/1 is a Switched Mode Power Supply (SMPS) Controller IC intended for fly-back topologies. The TEA1731TS operates in peak current and frequency control mode. Frequency jitter has been implemented to reduce electro-magnetic interference. Slope compensation is integrated for continuous conduction mode operation. The IC features overpower protection. The controller accepts an overpower situation for a limited amount of time. One pin is reserved for protection purposes. Over temperature protection (OTP) can be implemented with a minimal number of external components. At low-power levels, the primary peak current is set to 25% of the maximum peak current. The switching frequency is reduced to limit the switching losses. The combination of fixed frequency operation at high output power and frequency reduction at low output power provides high efficiency over the total load range. It makes the design of highly efficient and reliable supplies for power requirements.