|
|
PDF TEA1791T Data sheet ( Hoja de datos )
| Número de pieza | TEA1791T | |
| Descripción | GreenChip Synchronous Rectifier Controller | |
| Fabricantes | NXP Semiconductors | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de TEA1791T (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
|
No Preview Available !
TEA1791T
GreenChip synchronous rectifier controller
Rev. 01 — 3 February 2009
Product data sheet
www.datasheet4u.com
1. General description
The TEA1791T is a member of the new generation of Synchronous Rectifier (SR)
controller ICs for switched mode power supplies. Its high level of integration allows the
design of a cost-effective power supply with a very low number of external components.
The TEA1791T is a controller IC dedicated for synchronous rectification on the secondary
side of discontinuous conduction mode and quasi-resonant flyback converters.
The TEA1791T is fabricated in a Silicon On Insulator (SOI) process.
2. Features
2.1 Distinctive features
I Accurate synchronous rectification functionality
I Wide supply voltage range (8.5 V to 38 V)
I High level of integration, resulting in a very low external component count
I High driver output voltage of 10 V to drive all MOSFET brands to the lowest RDSon
2.2 Green features
I Low current consumption
I High system efficiency from no load to full load
2.3 Protection features
I Undervoltage protection
3. Applications
I The TEA1791T is intended for adapters. The device can also be used in all other
discontinuous conduction mode systems and quasi-resonant flyback systems that
demand a highly efficient and cost-effective solution.
4. Ordering information
Table 1. Ordering information
Type number
Package
Name
Description
TEA1791T/N1
SO8
plastic small outline package; 8 leads; body width 3.9 mm
Version
SOT96-1
1 page  
NXP Semiconductors
TEA1791T
GreenChip synchronous rectifier controller
8. Limiting values
www.datasheet4u.com
Table 3. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). All voltages are measured
with respect to ground (pin 2); positive currents flow into the chip. The voltage ratings are valid
provided other ratings are not violated; current ratings are valid provided the other ratings are not
violated.
Symbol Parameter
Conditions
Min Max Unit
Voltages
VCC
VSRSENSE
Currents
supply voltage
voltage on pin SRSENSE
continuous
continuous
−0.4 +38
- 120
V
V
IDRIVER
ISRSENSE
General
current on pin DRIVER
current on pin SRSENSE
duty cycle < 10 %
−0.8 +3
−3 -
A
mA
Ptot
total power dissipation
Tamb < 80 °C
Tstg storage temperature
Tj junction temperature
Vesd
electrostatic discharge
class 2
voltage
human body
model
-
−55
−20
[1] -
0.45
+150
+150
2000
W
°C
°C
V
machine model
[2] -
200 V
charged device
model
- 500 V
[1] Equivalent to discharging a 100 pF capacitor through a 1.5 kΩ series resistor.
[2] Equivalent to discharging a 200 pF capacitor through a 0.75 µH coil and a 1.5 kΩ series resistor.
9. Thermal characteristics
Table 4.
Symbol
Rth(j-a)
Thermal characteristics
Parameter
thermal resistance from junction
to ambient
Conditions
in free air
Typ Unit
150 K/W
TEA1791T_1
Product data sheet
Rev. 01 — 3 February 2009
© NXP B.V. 2009. All rights reserved.
5 of 11
5 Page 
NXP Semiconductors
16. Contents
www.datasheet4u.com
1 General description . . . . . . . . . . . . . . . . . . . . . . 1
2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2.1 Distinctive features . . . . . . . . . . . . . . . . . . . . . . 1
2.2 Green features . . . . . . . . . . . . . . . . . . . . . . . . . 1
2.3 Protection features . . . . . . . . . . . . . . . . . . . . . . 1
3 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
4 Ordering information . . . . . . . . . . . . . . . . . . . . . 1
5 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 2
6 Pinning information . . . . . . . . . . . . . . . . . . . . . . 2
6.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
6.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 2
7 Functional description . . . . . . . . . . . . . . . . . . . 3
7.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
7.2 Start-up and UnderVoltage LockOut (UVLO) . . 3
7.3 Synchronous rectification . . . . . . . . . . . . . . . . . 3
7.4 Supply management. . . . . . . . . . . . . . . . . . . . . 4
7.5 Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
8 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 5
9 Thermal characteristics. . . . . . . . . . . . . . . . . . . 5
10 Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 6
11 Application information. . . . . . . . . . . . . . . . . . . 7
12 Package outline . . . . . . . . . . . . . . . . . . . . . . . . . 8
13 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . 9
14 Legal information. . . . . . . . . . . . . . . . . . . . . . . 10
14.1 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 10
14.2 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
14.3 Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
14.4 Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
15 Contact information. . . . . . . . . . . . . . . . . . . . . 10
16 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
TEA1791T
GreenChip synchronous rectifier controller
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
© NXP B.V. 2009.
All rights reserved.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [email protected]
Date of release: 3 February 2009
Document identifier: TEA1791T_1
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet TEA1791T.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| TEA1791T | GreenChip Synchronous Rectifier Controller | NXP Semiconductors |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |