1 General description

The TEA2016AAT is a digital configurable LLC and PFC combo controller for high-efficiency resonant power

supplies. It includes both the LLC controller functionality and PFC controller operating in DCM and QR mode.

The TEA2016AAT enables building a complete resonant power supply, which is easy to design and has a very

low component count. The TEA2016AAT comes in a low profile and narrow body-width SO16 package.

The TEA2016AAT digital architecture is based on a high-speed configurable hardware state machine ensuring

very reliable real-time performance. During the power supply development, many operation and protection

settings of the LLC and PFC controller can be adjusted by loading new settings into the device to meet specific

application requirements. The configurations can be fully secured to prevent unauthorized copying of the

proprietary TEA2016AAT configuration content.

In contrast to traditional resonant topologies, the TEA2016AAT shows a very high efficiency at low loads due to

the low-power mode. This mode operates in the power region between continuous switching (also called highpower

mode) and burst mode.

Because the TEA2016AAT regulates the output voltage of the system via the primary capacitor voltage, it has

accurate information about the power delivered to the output. This measured output power defines the mode of

operation (burst mode, low-power mode, or high-power mode). The transition levels of the operating modes can

be easily programmed into the device.

The TEA2016AAT contains all protections like overtemperature protection (OTP), overcurrent protection (OCP),

overvoltage protection (OVP), overpower protection (OPP), open-loop protection (OLP), and capacitive mode

regulation (CMR). Each of these protections can be configured independently and accurately by programming

parameters inside the device.

The device contains both a low-voltage and high-voltage silicon technology for high-voltage start-up, integrated

drivers, level shifter, protections, and circuitry assuring zero-voltage switching.

The TEA2016AAT/TEA1995T combination gives an easy to design, highly efficient, and reliable power supply,

providing 90 W to 500 W, with a minimum of external components. The system provides a very low no-load

input power (< 75 mW; total system including the TEA2016AAT/TEA1995T combination) and high efficiency

from minimum to maximum load. This power supply meets the efficiency regulations of Energy Star, the

Department of Energy, the Eco-design directive of the European Union, the European Code of Conduct, and

other guidelines. So, any auxiliary low-power supply can be omitted.

2 Features and benefits

2.1 Distinctive features

• Complete functionality of LLC and PFC controller in single small-size SO16 package

• Integrated high-voltage start-up

• Integrated drivers and high-voltage level shifter (LS)

• High-side driver directly supplied from the low-side driver output

• Accurate boost voltage regulation

• Integrated X-capacitor discharge without additional external components

• Power good function

• Several parameters can easily be configured, like:

– Operating frequencies to be outside the audible area at all operating modes

– Soft start and soft stop in burst mode, reducing the audible noise

– Accurate transition levels between operation modes (high-power mode/low-power mode/burst mode)

2.2 Green features

• Valley/zero voltage switching for minimum switching losses

• Extremely high efficiency from low load to high load

• Compliant with latest energy-saving standards and directives (Energy Star, EuP)

• Excellent no-load input power (< 75 mW for TEA2016AAT/TEA1995T combination)

2.3 Protection features

• Independently configurable levels and timers

• All protections can independently be set to latched, safe restart, or latched after several attempts to restart

• Supply undervoltage protection (UVP)

• Overpower protection (OPP)

• Internal and external overtemperature protection (OTP)

• Capacitive mode regulation (CMR)

• Accurate overvoltage protection (OVP)

• Overcurrent protection (OCP)

• Inrush current protection (ICP)

• Brownin/brownout protection

• Disable input

3 Applications

• Desktop and all-in-one PCs

• LCD television

• Notebook adapter

• Printers