TEA19361T
Rev. 1 — 9 August 2016
GreenChip SMPS primary side control IC with
QR/DCM operation
Product data sheet
1
General description
The TEA19361T is a member of the GreenChip family of controller ICs for switched
mode power supplies. It is intended for flyback topologies to be used either standalone
or together with USB PD or smart charging controllers (like the TEA190x series) at the
secondary side. The built-in green functions provide high efficiency at all power levels.
The TEA19361T is compatible with multiple output voltage applications with a wide
output range from 5 V to 20 V in Constant Voltage (CV) mode. When used with a
secondary-side controller IC, like the TEA190x series, it supports Constant Current (CC)
mode down to 3 V output voltage.
At high power levels, the flyback converter operates in Quasi-Resonant (QR) mode. At
lower power levels, the controller switches to Frequency Reduction (FR) in Discontinuous
Conduction Mode (DCM) operation. The peak current is limited to a minimum level.
Valley switching is used in all operating modes.
At very low power levels, the controller uses burst mode to regulate the output power.
A special optocoupler current reduction regulation has been integrated which reduces
the average optocoupler current in all modes to a minimum level. This reduction ensures
high efficiency at low power and excellent no-load power performance. As the switching
frequency in this mode is never less than f
sw(min)
and the burst repetition rate is regulated
to a low value, the audible noise is minimized. During the non-switching phase of the
burst mode, the internal IC supply current is minimized for further efficiency optimization.
The TEA19361T includes a wide set of protections that are safe-restart protections. One
of these protections is an accurate OverPower Protection (OPP). If the output is shorted,
the system stops switching and restarts. The output power is then limited to a lower level.
The TEA19361T is manufactured in a high-voltage Silicon-On-Insulator (SOI) process.
The SOI process combines the advantages of a low-voltage process (accuracy, high-
speed protection, functions, and control). However, it also maintains the high-voltage
capabilities (high-voltage start-up, low standby power, and brownin/brownout sensing at
the input).
The TEA19361T enables low-cost, highly efficient and reliable supplies for power
requirements up to 75 W using a minimum number of external components.
NXP Semiconductors
GreenChip SMPS primary side control IC with
QR/DCM operation
TEA19361T
2
Features and benefits
2.1 General features
•
SMPS controller IC supporting smart-charging applications and multiple-output-voltage
applications
•
Wide output range (5 V to 20 V in CV mode, 3 V to 20 V in CC mode, and 3 V to 6 V in
direct charging mode)
•
Housed in a small SO10 package
•
Suited for mobile charger applications that require low Common-Mode Noise (CMN)
distortion (meeting the IEC EN62684 specification)
•
Adaptive dual supply for highest efficiency over the entire output voltage range
•
Integrated high-voltage start-up
•
Continuous V
CC
regulation during start-up and protection via the HV pin, allowing a
minimum VCC capacitor value
•
Reduced optocurrent enabling low no-load power (20 mW at 5 V output)
•
Fast transient response from 0 to full load
•
Minimal audible noise and output voltage ripple in all operating modes
•
Integrated soft start
2.2 Green features
Enables high efficiency operation over a wide power range via:
•
•
•
•
Low supply current during normal operation (0.6 mA without load)
Low supply current during non-switching state in burst mode (0.2 mA)
Valley switching for minimum switching losses
Frequency reduction with fixed minimum peak current to maintain high efficiency at low
output power levels
2.3 Protection features
All protections are safe-restart protections.
•
•
•
•
•
•
•
Mains voltage compensated OverPower Protection (OPP)
OverTemperature Protection (OTP)
Integrated overpower time-out
Integrated restart timer for system fault conditions
Continuous mode protection using demagnetization detection
Accurate OverVoltage Protection (OVP)
General-purpose input for safe restart protection; for use with system OverTemperature
Protection (OTP)
•
Driver maximum on-time protection
•
Brownin and brownout protection
3
Applications
•
Battery chargers for smart phones and media tablets
•
Battery chargers for mobile devices with touchpad display
TEA19361T
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2016. All rights reserved.
Product data sheet
Rev. 1 — 9 August 2016
2 / 33
NXP Semiconductors
GreenChip SMPS primary side control IC with
QR/DCM operation
TEA19361T
4
Ordering information
Package
Name
Description
plastic small outline package; 10 leads; body width 3.9 mm; body
thickness 1.35 mm
Table 1. Ordering information
Type number
TEA19361T/1
Version
SOT1437-1
SO10
5
Marking
Table 2. Marking codes
Type number
TEA19361T/1
Marking code
TEA19361T
TEA19361T
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© NXP Semiconductors N.V. 2016. All rights reserved.
Product data sheet
Rev. 1 — 9 August 2016
3 / 33
NXP Semiconductors
TEA19361T
GreenChip SMPS primary side control IC with
QR/DCM operation
HV
AUX
StartOPCntr
Isense
Gate
BLANK
OCP
ISENSE
lpeak
softstart
VinMeasure
lpeakSoftStart
DRIVER
6
Block diagram
200 nA
VCCH
HVjfet
Demag
35 mV
4.8 V
V=f(laux)
Iaux
V
CC
Charge
DIGITAL
CONTROL
A
A/D
CONVERSION
BrownOut
Vcc<Vccstop
Gate
Ton > 55 µs
TonMax
VCC charged via
HV current source
Vcc>Vccstart
Iprotect = on
Vprotect>0.5 V
V
CCL
8.65 V
9.9 V
11 V
14.9 V
V
CC
Reset
V
CC
Stop
V
CC
Low
V
CC
Start
StartOPCntr
OCP
Protection
BrownOut
Demag
Normal mode
r
q
T = 1000 ms
and
Vcc>Vccreset
Normal mode
Ivcc = 600 µA
s
BurstOn=1
BurstMode=1
BurstOn=0
protection
safe-restart protection mode
VCC regulated to Vccstart
Ivcc = 250 µA
TEMPERATURE
PROTECTION
OTP
1.25 mA
13 V
V
CC
Discharge
gate
Standby mode
Ivcc = 250 µA
VccDischarge
1.45 V
VoutRegulated
OSCILLATOR
AND
TIMING SIGNALS
Gate
DELAY TIMERS
VinMeasure
Restart
1000 ms
StartOPCntr
OP
enable
COUNTER
40
200 ms
OPdetection
PeriodCounter
Tperiod
Nnew=f(Nprev, Tperiod)
REGISTER
74 µA
PROTECT
5V
SafeRestart
enable
COUNTER
TonMax
OntimeCounter
Ton_count
A
B
A≥B
Ton_ref
0.2 V
Power-down
OVP+Protect
0.5 V
/4
AuxOVP
A/D
Offset
loptoLt100u
100 µA +
1 µA hys
130 KHz
fre q
uen
cy
AUX
25 KHz
r
s
q
VoutRegulated
Vlp
A/D
GND
CTRL
VccStop
Ctrl_p
3.5 V
ea
k
3V
80 µA
Freq
750 mv
BurstMode
loptoLt100u
set
rst
q
clk
gate
aaa-023925
140 mv
1.8 V 2.25 V
4.1 V
Ctrl_p
loptoLt100u
d
BurstOn
Figure 1. TEA19361T block diagram
TEA19361T
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2016. All rights reserved.
Product data sheet
Rev. 1 — 9 August 2016
4 / 33
NXP Semiconductors
GreenChip SMPS primary side control IC with
QR/DCM operation
TEA19361T
7
Pinning information
7.1 Pinning
VCCH
GND
VCCL
ISENSE
DRIVER
1
2
3
4
5
10 HV
9
n.c.
PROTECT
CTRL
AUX
IC
8
7
6
aaa-020153
Figure 2. TEA19361T pin configuration (SO10)
7.2 Pin description
Table 3. Pin description
Symbol
VCCH
GND
VCCL
ISENSE
DRIVER
AUX
CTRL
PROTECT
n.c.
HV
Pin
1
2
3
4
5
6
7
8
9
10
Description
higher supply voltage
ground
lower supply voltage
current sense input
gate driver output
auxiliary winding input for demagnetization timing, valley
detection, overpower correction, and OVP
control input
general-purpose protection input; pin for power-down mode
high-voltage safety spacer; not connected
high-voltage start-up; brownin/brownout sensing
TEA19361T
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2016. All rights reserved.
Product data sheet
Rev. 1 — 9 August 2016
5 / 33
Embedded System
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