NXP Semiconductors
UM10972
TEA1916DB1262 digital resonant 240 W/12 V power supply demo board
UM10972
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© NXP B.V. 2018. All rights reserved.
User manual
Rev. 1.1 — 8 June 2018
COMPANY PUBLIC
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1 Introduction
Warning
The non-insulated high voltages that are present when operating this
product, constitute a risk of electric shock, personal injury, death and/or
ignition of fire.
This product is intended for evaluation purposes only. It shall be
operated in a designated test area by personnel qualified according
to local requirements and labor laws to work with non-insulated mains
voltages and high-voltage circuits. This product shall never be operated
unattended.
This user manual describes the TEA1916DB1262 240 W power supply board using
the TEA19161T, TEA19162T, and TEA1995T. The user manual contains a functional
description and a set of preliminary measurements to show the main characteristics.
1.1 TEA19161T and TEA19162T
The TEA19161T is a Half-Bridge Converter (HBC). The TEA19162T is a controller
for Power Factor Correction (PFC). Both ICs provide drive functionality for the related
discrete MOSFETs.
The resonant controller part (TEA19161T) is a high-voltage controller for a zero voltage
switching LLC resonant converter. The resonant controller includes:
•
A high-voltage shift circuit
•
A high-voltage internal start-up switch
•
Several protection features, like OverCurrent Protection (OCP), Open-Loop Protection
(OLP), Capacitive Mode Protection (CMP), and a general purpose latched protection
input
The TEA19162T is a PFC controller. To ensure efficient operation of the PFC, the
TEA19162T incorporates quasi-resonant operation at high power levels and quasi-
resonant operation with valley skipping at lower power levels. OCP, OverVoltage
Protection (OVP), and demagnetization sensing ensure safe operation under all
conditions. To improve the overall performance significantly, the TEA19161T and
TEA19162T work together.
With the TEA1995T as a synchronized rectifier controller at the secondary side,
MOSFETs can be used instead of rectifying diodes, improving the overall efficiency of the
complete system even more.
The combination of PFC, resonant controller, and SR controller makes these devices
suitable for all kinds of applications. Especially for application requiring high efficiency
over the whole power range from no load to maximum output load.
