NXP Semiconductors UM10972 Manual de usuario
UM10972
TEA1916DB1262 digital resonant 240 W/12 V power supply
demo board
Rev. 1.1 — 8 June 2018 User manual
COMPANY PUBLIC
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Keywords TEA1916DB1262, TEA19161T, TEA19162T TEA1995T 240 W, LLC,
resonant, half-bridge, PFC, controller, converter, burst mode, power supply,
demo board, high efficiency, 80+ certification
Abstract The TEA19161T is a digital LLC controller. It is used in combination with the
PFC controller TEA19162T.Combining these two ICs with the SR controller
TEA1995T at the secondary side results in a high-efficient resonant converter
over the whole output power range.
This document describes such a resonant power supply design with a 240 W
(12 V/20 A) typical output power.
It operates in normal mode for high and medium power levels, in low-power
mode at medium and low power levels, and in burst mode at (very) low power
levels.
Low-power mode and burst mode operation provide a reduction of power
losses, resulting in a higher efficiency at lower output power levels. Power
levels for switching over from one mode to another mode can be selected by
adjusting component values.
The efficiency at high power levels is well above 90 %.
No-load power consumption is well below 100 mW.
At 250 mW output power, the input power is well below the 500 mW (complies
easily with EUP lot6).
NXP Semiconductors UM10972
TEA1916DB1262 digital resonant 240 W/12 V power supply demo board
UM10972 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2018. All rights reserved.
User manual Rev. 1.1 — 8 June 2018
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Table 1. Revision history
Rev Date Description
v.1.1 20180608 second, updated issue
Modifications: •Section 7 "Bill of Materials" has been updated.
•Section 9.2 "PFC coil" has been updated.
v.1 20171201 first issue
NXP Semiconductors UM10972
TEA1916DB1262 digital resonant 240 W/12 V power supply demo board
UM10972 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2018. All rights reserved.
User manual Rev. 1.1 — 8 June 2018
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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.
NXP Semiconductors UM10972
TEA1916DB1262 digital resonant 240 W/12 V power supply demo board
UM10972 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2018. All rights reserved.
User manual Rev. 1.1 — 8 June 2018
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1.1.1 Pinning
IC
SUPIC SNSBOOST
SNSFB SNSCAP
SNSOUT SNSCUR
GND SNSSET
SUPREG n.c.
GATELS HB
n.c. SUPHS
SUPHV GATEHS
aaa-017286
1
2
3
4
5
6
7
8
10
9
12
11
14
13
16
15
IC
GATEPFC SNSAUX
GND PFCCOMP
SNSCUR SNSMAINS
SUPIC SNSBOOST
aaa-017287
1
2
3
4
6
5
8
7
a. TEA19161T b. TEA19162T
Figure 1. Pinning diagrams
1.2 TEA1995T
The TEA1995T is the first product of a new generation of Synchronous Rectifier (SR)
controller ICs for switched-mode power supplies. It incorporates an adaptive gate drive
method for maximum efficiency at any load.
The TEA1995T is a dedicated controller IC for synchronous rectification on the
secondary side of resonant converters. It includes two driver stages for driving the SR
MOSFETs, which rectify the outputs of the central tap secondary transformer windings.
The two-gate driver stages have their own sensing inputs and operate independently.
IC
GDB GDA
GND VCC
DSB DSA
SSB SSA
aaa-016990
1
2
3
4
6
5
8
7
Figure 2. TEA1995T pinning diagram
NXP Semiconductors UM10972
TEA1916DB1262 digital resonant 240 W/12 V power supply demo board
UM10972 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2018. All rights reserved.
User manual Rev. 1.1 — 8 June 2018
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2 Safety warning
The board must be connected to mains voltage. Avoid touching the demo board while
it is connected to the mains voltage. An isolated housing is obligatory when used in
uncontrolled, non-laboratory environments. Galvanic isolation of the mains phase using
a variable transformer is always recommended. Figure 3 shows the symbols that identify
the isolated and non-isolated devices.
019aab173
019aab174
a. Isolated b. Not isolated
Figure 3. Isolation symbols
NXP Semiconductors UM10972
TEA1916DB1262 digital resonant 240 W/12 V power supply demo board
UM10972 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2018. All rights reserved.
User manual Rev. 1.1 — 8 June 2018
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3 Specifications
Table 2. Specifications
Symbol Description Value Conditions
Input
Viinput voltage 90 V (RMS) to
264 V (RMS)
AC
fiinput frequency 47 Hz to 63 Hz
Pi(noload) no-load input power < 100 mW at 230 V/50 Hz
Pi(load=250mW) standby power
consumption
< 450 mW at 230 V/50 Hz
Output
Vooutput voltage 12 V
Iooutput current 0 A to 20 A continuous
Io(max) maximum output
current
25 A with OPP
Io(peak)max maximum peak output
current
30 A t < 50 ms
thold hold time > 10 ms at 115 V/60 Hz;
full load
tstart start time ≤ 0.5 s at 115 V/60 Hz
η efficiency ≥ 89 % average according to
CoC
NXP Semiconductors UM10972
TEA1916DB1262 digital resonant 240 W/12 V power supply demo board
UM10972 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2018. All rights reserved.
User manual Rev. 1.1 — 8 June 2018
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4 Board photographs
a. Top view
b. Bottom view
Figure 4. TEA1916DB1262 prototype 240 W demo board
The board can operate at a mains input voltage between 90 V (RMS) and 264 V (RMS;
universal mains).
The TEA1916DB1262demo board contains two subcircuits:
•A BCM-type PFC converter
•A resonant LLC-type HBC converter
To achieve an optimized resonant power board, the converters are working together.
NXP Semiconductors UM10972
TEA1916DB1262 digital resonant 240 W/12 V power supply demo board
UM10972 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2018. All rights reserved.
User manual Rev. 1.1 — 8 June 2018
COMPANY PUBLIC 8 / 38
The purpose of the TEA1916DB1262 prototype demo board is to evaluate the operation
of the combination of converters (TEA19161T, TEA19162T, and TEA1995T) in a single
output supply, which includes all modes. The performance passes general standards,
including the EuP lot6 requirements. It can be used as a starting point for further
development.
NXP Semiconductors UM10972
TEA1916DB1262 digital resonant 240 W/12 V power supply demo board
UM10972 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2018. All rights reserved.
User manual Rev. 1.1 — 8 June 2018
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5 Performance measurements
5.1 Test facilities
•Oscilloscope: Yokogawa DL9140L
•AC Power Source: Agilent 6812B
•Electronic load: Agilent 6063B
•Digital power meter: Yokogawa WT210
5.2 Start-up behavior
The rise time of the output voltage (measured from 10 % to 90 % point of the nominal
output) is between 6 ms and 10 ms. The rise time depends on the output current load.
a. Start-up at 230 V mains and no load (0 A) b. Start-up at 115 V mains and nominal load (20 A)
(1) PFC
(2) HBC
(3) Vout
(4) Iout
Figure 5. Start-up behavior
NXP Semiconductors UM10972
TEA1916DB1262 digital resonant 240 W/12 V power supply demo board
UM10972 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2018. All rights reserved.
User manual Rev. 1.1 — 8 June 2018
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a. Start-up time = 381 ms at Vmains = 230 V (RMS) mains
(Iout = 20 A)
b. Start-up time = 495 ms at Vmains = 115 V (RMS) mains
(Iout = 20 A)
(1) VSUPIC
(2) Vout
(3) Vbulk
(4) Iout
Figure 6. Start-up time at different mains voltages
Table 3. Start-up time
Condition Start-up time (ms)
115 V/60 Hz 470
230 V/50 Hz 380
requirement < 500
5.3 Efficiency
5.3.1 Efficiency characteristics
To determine the efficiency, the output voltage (not taking into account the losses in an
output connection cable) on the TEA1916DB1262 demo board was measured.
Table 4. Efficiency results
Condition CoC efficiency
average
requirement (%)
Average 25 % load 50 % load 75 % load 100 % load
115 V/60 Hz > 89 91.17 90.12 91.97 91.84 90.77
230 V/50 Hz > 89 92.6 91.06 93.29 93.2 92.71
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