TEA19161T
Digital controller for high-efficiency resonant power supply
Rev. 1 — 10 March 2016
Product data sheet
1. General description
The TEA19161T is a fully digital controller for high-efficiency resonant power supplies.
Together with the TEA19162T PFC controller and the TEA1995T dual SR controller, a
complete resonant power supply can be built which is easy to design and has a very low
component count. 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. So, any auxiliary low-power supply can
be omitted.
In contrast to traditional resonant topologies, the TEA19161T (LLC) shows a high
efficiency at low loads due to the newly introduced low-power mode. This mode operates
in the power region between continuous switching (also called high-power mode) and
burst mode.
Because the TEA19161T is regulated via the primary capacitor voltage, it has accurate
information about the power delivered to the output. The measured output power defines
the mode of operation (burst mode, low-power mode or high-power mode). A
configuration pin can easily set the transition levels of the operating modes.
The TEA19161T contains a low-voltage die with a fully digital controller for output power
control, start-up, initializations, and protections. These protections include OverCurrent
Protection (OCP), OverVoltage Protection (OVP), Open-Loop Protection (OLP), and
Capacitive Mode Regulation (CMR). It also contains a high-voltage Silicon-On-Insulator
(SOI) controller for high-voltage start-up, integrated drivers, level shifter, protections, and
circuitry assuring zero-voltage switching.
The TEA19161T is designed to cooperate with the TEA19162T Power Factor Control
(PFC) controller. For communications about start-up and protections, the TEA19161T
contains a digital control interface. The digital control enables a fast latch reset
mechanism. It maximizes the overall system efficiency at low output power levels by
setting the TEA19162T to operate in burst mode.
The TEA19161T/TEA19162T/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 TEA19161T/TEA19162T/TEA1995T combination) and high efficiency from
minimum to maximum load. So, any additional low-power supply can be omitted, ensuring
a significant system cost saving and highly simplified power supply design.
NXP Semiconductors
TEA19161T
Digital controller for high-efficiency resonant power supply
2. Features and benefits
2.1 Distinctive features
Complete functionality as a combination with TEA19162T
Integrated high-voltage start-up
Integrated high-voltage Level Shifter (LS)
Extremely fast start-up (< 500 ms at V
mains
= 100 V (AC))
Continuously V
SUPIC
regulation via the SUPHV pin during start-up and protection,
allowing minimum SUPIC capacitor values
Operating frequencies are outside the audible area at all operating modes
Integrated soft start
Power good function
Maximum 500 kHz half-bridge switching frequency
2.2 Green features
Extremely high efficiency from low load to high load
Compliant with Energy using Product directive (EuP) lot 6
Excellent no-load input power (< 75 mW for TEA19161T/TEA19162T/TEA1995T
combination)
Regulated low optocurrent, enabling low no-load power consumption
Very low supply current during non-switching state in burst mode
Transition between different operation modes (high-power/low-power/burst mode)
occur at integrated, externally adjustable power levels
Adaptive non-overlap time
2.3 Protection features
Supply UnderVoltage Protection (UVP)
OverPower Protection (OPP)
Integrated adjustable overpower time-out
Adjustable latch or restart function for OverPower Protection
On-chip OverTemperature Protection (OTP)
Capacitive Mode Regulation (CMR)
Accurate OverVoltage Protection (OVP)
Maximum on-time protection for low-side and high-side driver output
OverCurrent Protection (OCP)
Disable input
3. Applications
Desktop and all-in-one PCs
LCD television
Notebook adapter
Printers
TEA19161T
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2016. All rights reserved.
Product data sheet
Rev. 1 — 10 March 2016
2 of 46
NXP Semiconductors
TEA19161T
Digital controller for high-efficiency resonant power supply
4. Ordering information
Table 1.
Ordering information
Package
Name
TEA19161T
SO16
Description
Version
plastic small outline package; 16 leads; body width 3.9 mm; body thickness SOT109-3
1.47 mm
Type number
TEA19161T
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2016. All rights reserved.
Product data sheet
Rev. 1 — 10 March 2016
3 of 46
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Product data sheet
Rev. 1 — 10 March 2016
4 of 46
TEA19161T
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2016. All rights reserved.
NXP Semiconductors
5. Block diagram
Digital controller for high-efficiency resonant power supply
TEA19161T
Fig 1.
Block diagram
NXP Semiconductors
TEA19161T
Digital controller for high-efficiency resonant power supply
6. Pinning information
6.1 Pinning
Fig 2.
TEA19161T pin configuration (SOT109-3)
6.2 Pin description
Table 2.
Symbol
SUPIC
SNSFB
SNSOUT
GND
SUPREG
GATELS
n.c.
SUPHV
GATEHS
SUPHS
HB
n.c.
SNSSET
SNSCUR
SNSCAP
Pin description
Pin Description
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
input supply voltage and output of internal HV start-up source; externally connected to an auxiliary
winding of the LLC via a diode or to an external DC supply
output voltage regulation feedback sense input; externally connected to an optocoupler
sense input for setting the burst frequency and monitoring the LLC output voltage; externally via a
resistive divider and a diode connected to the auxiliary winding
ground
regulated SUPREG IC supply; internal regulator output; input for drivers; externally connected to
SUPREG buffer capacitor
LLC low-side MOSFET gate driver output
not connected
internal HV start-up source high-voltage supply input; externally connected to (PFC) boost voltage
LLC high-side MOSFET gate driver output
high-side driver supply input; externally connected to bootstrap capacitor (C
SUPHS
)
low-level reference for high-side driver and input for half-bridge slope detection; externally connected to
half-bridge node HB between the LLC MOSFETs
not connected
settings for transition levels high/low power mode and low-power/burst mode, overpower level,
overpower time-out, and restart or latched. Output of the power good signal.
LLC current sense input; externally connected to the resonant current sense resistor
LLC capacitor voltage sense input; externally connected to divider across LLC capacitor
sense input for boost voltage; output for PFC burst control; externally connected to resistive divided
boost voltage
SNSBOOST 16
TEA19161T
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2016. All rights reserved.
Product data sheet
Rev. 1 — 10 March 2016
5 of 46
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