General description

The TEA19162CT and TEA19161CT are combined controller (combo) ICs for resonant

topologies including PFC. They provide high efficiency at all power levels. Together

with the TEA1995T dual LLC resonant SR controller, a cost-effective resonant power

supply can be built. This power supply meets the efficiency regulations of Energy Star,

the Department of Energy (DoE), the Eco-design Directive of the European Union, the

European Code of Conduct, and other guidelines.

The TEA19162CT is a power factor correction (PFC) controller. The IC communicates

with the TEA19161CT on start-up sequence and protections. It also enables a fast latch

reset mechanism. To maximize the overall system efficiency, the TEA19161CT allows

setting the TEA19162CT PFC to burst mode at a low output power level.

Using the TEA19161CT and TEA19162CT combo together with the TEA1995T

secondary synchronous rectifier controller, a highly efficient and reliable power supply

can be designed with a minimum of external components. The target output power is

between 90 W and 500 W.

The system provides a very low no-load input power (< 75 mW; total system including

theTEA19161CT/TEA19162CT combo and the TEA1995T) and high efficiency from

minimum to maximum load. So, no additional low-power supply is required.

Features and benefits

Distinctive features

• Complete functionality as TEA19161CT/TEA19162CT combo

• Integrated X-capacitor discharge without additional external components

• Universal mains supply operation (70 V (AC) to 276 V (AC))

• Integrated soft start and soft stop

• Accurate boost voltage regulation

Green features

• Valley/zero voltage switching for minimum switching losses

• Frequency limitation to reduce switching losses

• Reduced supply current (200 μA) when in burst mode

Protection features

• Safe restart mode for system fault conditions

• Continuous mode protection with demagnetization detection

• Accurate overvoltage protection (OVP)

• Open-loop protection (OLP)

• Short-circuit protection (SCP)

• Internal and external IC overtemperature protection (OTP) with safe restart

• Low and adjustable overcurrent protection (OCP) trip level

• Adjustable brownin/brownout protection

• Supply undervoltage protection (UVP)