Overview
The TEA1993TS/1125, produced by NXP USA Inc., is a dedicated controller IC for synchronous rectification on the secondary side of flyback converters. This component is part of a new generation of Synchronous Rectifier (SR) controller ICs designed to enhance efficiency in switched mode power supplies. It incorporates both the sensing stage and the driver stage for driving the SR MOSFET, which rectifies the output of the secondary transformer winding. The TEA1993TS is fabricated using a Silicon-On-Insulator (SOI) process, enabling it to generate its own supply voltage for applications such as battery charging with low output voltage or high-side rectification.
Key Specifications
| Parameter | Description |
|---|---|
| Function | Synchronous Rectifier Controller for flyback converters |
| Process Technology | Silicon-On-Insulator (SOI) |
| Application | Secondary side of flyback converters, battery charging, high-side rectification |
| MOSFET Drive | Adaptive gate drive for SR MOSFET |
| Supply Voltage Generation | Can generate its own supply voltage |
| Load Condition | Maximum efficiency at any load |
Key Features
- Dedicated controller IC for synchronous rectification on the secondary side of flyback converters.
- Incorporates sensing and driver stages for driving the SR MOSFET.
- Adaptive gate drive for maximum efficiency at any load.
- Capable of generating its own supply voltage for battery charging applications or high-side rectification.
- Fabricated using Silicon-On-Insulator (SOI) process.
Applications
- Flyback power supplies.
- Battery charging applications with low output voltage.
- High-side rectification applications.
- Any switched mode power supply requiring synchronous rectification for enhanced efficiency.
Q & A
- What is the primary function of the TEA1993TS/1125?
The primary function of the TEA1993TS/1125 is to act as a synchronous rectifier controller for the secondary side of flyback converters.
- What process technology is used in the fabrication of the TEA1993TS/1125?
The TEA1993TS/1125 is fabricated using Silicon-On-Insulator (SOI) process technology.
- What types of applications can the TEA1993TS/1125 be used in?
The TEA1993TS/1125 can be used in flyback power supplies, battery charging applications with low output voltage, and high-side rectification applications.
- How does the TEA1993TS/1125 enhance efficiency in power supplies?
The TEA1993TS/1125 enhances efficiency through adaptive gate drive for the SR MOSFET, ensuring maximum efficiency at any load.
- Can the TEA1993TS/1125 generate its own supply voltage?
Yes, the TEA1993TS/1125 can generate its own supply voltage for certain applications.
- What is the role of the SR MOSFET in the TEA1993TS/1125 system?
The SR MOSFET is driven by the TEA1993TS/1125 to rectify the output of the secondary transformer winding in flyback converters.
- How does the TEA1993TS/1125 improve battery charging efficiency?
The TEA1993TS/1125 improves battery charging efficiency by providing synchronous rectification, which is more efficient than traditional diode rectification, especially at low output voltages.
- What are the benefits of using the TEA1993TS/1125 in high-side rectification applications?
The TEA1993TS/1125 offers improved efficiency and reduced losses in high-side rectification applications due to its synchronous rectification capabilities.
- Is the TEA1993TS/1125 compatible with existing flyback power supplies?
Yes, the TEA1993TS/1125 is designed to be incorporated into existing flyback power supplies by replacing the secondary rectifier diode.
- Where can I find detailed documentation and design files for the TEA1993TS/1125?
Detailed documentation and design files for the TEA1993TS/1125 can be found on NXP Semiconductors' official website and other authorized distributors.
