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TEA1723AT 데이터시트 PDF




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부품번호 TEA1723AT 기능
기능 HV start-up flyback controller
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TEA1723AT 데이터시트, 핀배열, 회로
TEA1723AT
HV start-up flyback controller with integrated MOSFET for
11 W applications, 430 Hz burst frequency
Rev. 2.1 — 7 June 2012
Product data sheet
1. Product profile
1.1 General description
The TEA1723 is a small and low cost module Switched Mode Power Supply (SMPS)
controller IC for power applications (up to 11 W) and operates directly from the rectified
universal mains input. The device includes a high voltage power switch (700 V) and has
been optimized for flyback converter topologies to provide high-efficiency over the entire
load range with ultra-low power consumption in the no-load condition. It provides a circuit
for start-up directly from the rectified mains voltage without any external bleeder circuits.
The converter operates as a regulated voltage source from no-load up to the maximum
output current and operates as current source that delivers the maximum current over a
broad output voltage range. Using the TEA1723, a low power converter can be built at
minimum cost and with the minimum number of external components.
The controller regulates the output voltage with primary-side sensing which eliminates the
need for an additional secondary feedback circuitry and simplifies the design. At higher
power levels, a frequency and current control mode is used. It operates with burst mode
control at low power levels and no-load condition. The burst mode minimizes audible
noise and provides an energy saver state which reduces the power consumption in
no-load condition. The Burst mode frequency of 430 Hz enables no-load power
consumption < 12 mW at 230 V (AC) mains input.
1.2 Features and benefits
Power features:
Low power SMPS controller with integrated power switch designed for applications up
to 11 W
700 V high voltage power switch for global mains operation
Primary sensing for control of the output voltage without optocoupler and secondary
feedback circuitry
Minimizes audible noise in all operation modes
Energy Star 2.0 compliant
Jitter function for reduced EMI




TEA1723AT pdf, 반도체, 판매, 대치품
NXP Semiconductors
4. Pinning information
4.1 Pinning
TEA1723AT
HV start-up flyback controller with integrated MOSFET for 11 W
Fig 2. Pinning top view
GND1 1
GND2 2
GND3 3
FB 4
7 DRAIN
TEA1723
6 SOURCE
5 VCC
001aao249
4.2 Pin description
Pin Pin name
1 GND1
2 GND2
3 GND3
4 FB
5 VCC
6 SOURCE
7 DRAIN
--
I/O type
I
I
O
I
Pin description
ground
ground
ground
feedback input for voltage sensing
supply input
source for power switch
drain of power switch
high voltage spacer
5. Functional description
5.1 Start-up
The TEA1723 starts up by charging the VCC capacitor until the VCC(start) level. The
charging current flows from the high voltage DRAIN pin via an internal start-up current
source to the VCC pin.
Once the start level has been reached the start-up current source is switched off. During
switching operation, the start-up current source remains current-less and has zero
bleeder loss.
5.2 Primary sensing
The FB input senses the reflected secondary voltage on the primary side. The FB input
has a sample and hold function that samples the FB voltage on the secondary stroke to
control the output voltage.
The sampled VFBS voltage is the input for the TEA1723’s control loop and defines the
operating mode.
TEA1723AT
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2.1 — 7 June 2012
© NXP B.V. 2012. All rights reserved.
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TEA1723AT 전자부품, 판매, 대치품
NXP Semiconductors
TEA1723AT
HV start-up flyback controller with integrated MOSFET for 11 W
6. Limiting values
Table 3. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol
Parameter
Conditions
Tamb
Tj
Tstg
VESD
ambient temperature
junction temperature
storage temperature
electrostatic discharge voltage
CDM; all pins
HBM; all pins, except pin 7
HBM; pin 7
Voltages
VDRAIN
VSOURCE
VCC
VFB
Currents
voltage on pin DRAIN
voltage on pin SOURCE
voltage on pin VCC
voltage on pin FB
IDRAIN
ISOURCE
current on pin DRAIN
current on pin SOURCE
[1]
[1]
[1] Human body model: equivalent to discharging a 100 pF capacitor through a 1.5 kseries resistor.
7. Thermal characteristics
Min Max Unit
-40 +85 °C
-40 +150 °C
-55 +150 °C
-500 +500 V
-2000 +2000 V
-1000 +1000 V
-2 +700 V
-0.3 +5 V
-0.3 +35 V
-20 +5 V
-0.1 +1.5 A
-1.5 +0.1 A
Table 4.
Symbol
Rth(j-a)
Thermal characteristics
Parameter
thermal resistance
from junction to
ambient
Conditions
in free air; SO7 package; on open PCB
of 2.2 cm X 2.2 cm; 2-layer; 70 µm Cu
in free air; SO7 package; on open PCB
of 3 cm X 6 cm; 1-layer; 35 µm Cu
operating charger
Min Typ Max Unit
- 136 - K/W
- 136 - K/W
TEA1723AT
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2.1 — 7 June 2012
© NXP B.V. 2012. All rights reserved.
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TEA1723AT

HV start-up flyback controller

NXP Semiconductors
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