TEA1791AT
TEA1791AT is GreenChip synchronous rectifier controller manufactured by NXP Semiconductors.
description
The TEA1791AT 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 ponents. The TEA1791AT is a controller IC dedicated for synchronous rectification on the secondary side of discontinuous conduction mode and quasi-resonant flyback converters. The TEA1791AT is fabricated in a Silicon On Insulator (SOI) process.
2. Features and benefits
2.1 Distinctive features
- Accurate synchronous rectification functionality
- Wide supply voltage range (8.5 V to 38 V)
- High level of integration, resulting in a very low external ponent count
- High driver output voltage of 10 V to drive all MOSFET brands to the lowest RDSon
2.2 Green features
- Low current consumption
- High system efficiency from no load to full load
2.3 Protection features
- Undervoltage protection
3. Applications
- The TEA1791AT 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
TEA1791AT/N1 SO8 plastic small outline package; 8 leads; body width 3.9 mm
Version SOT96-1
NXP Semiconductors
5. Block diagram
Green Chip synchronous rectifier controller
1 SRSENSE control
DRIVER 4
TIMER 0.93 μs
0.99 μs
QR QS
VCC 8
- 310 m V
- 12 m V
- 55 m V
3, 5, 6, 7 n.c.
2 GND
Fig 1. Block diagram
6. Pinning information
6.1...
