Overview
The TEA1751AT/N1/S35518 is a highly integrated power management IC developed by NXP USA Inc. It is part of the third generation of green Switched Mode Power Supply (SMPS) controller ICs. This component combines a controller for Power Factor Correction (PFC) and a flyback controller, enabling the design of highly efficient and reliable power supplies with minimal external components.
Key Specifications
| Parameter | Description |
|---|---|
| Maximum Power | Up to 250 W |
| Mains Voltage Range | 70 V (AC) to 276 V (AC) |
| Start-up Method | Direct start-up from rectified universal mains voltage |
| Process Technology | High-voltage BCD800 process and low-voltage Silicon On Insulator (SOI) |
| Package Type | SOT109-1 |
| Protection Features | Overcurrent protection, mains undervoltage lockout/brownout protection, and general-purpose protection input |
Key Features
- Integrated PFC and flyback controller
- Dual-boost PFC with accurate maximum output voltage (NXP patented)
- Valley/Zero Voltage Switching (ZVS) for minimum switching losses (NXP patented)
- Frequency limitation to reduce switching losses
- On-chip start-up current source
- High level of integration resulting in a very low external component count and cost-effective design
- Soft-start-up of PFC and flyback controllers
- Efficient operation at low-power levels with frequency reduction mode and peak current limitation
Applications
The TEA1751AT/N1/S35518 is suitable for a wide range of power supply applications, including but not limited to:
- Consumer electronics power supplies
- Industrial power supplies
- LED lighting power supplies
- Medical equipment power supplies
- Telecommunication power supplies
Q & A
- What is the maximum power handling capability of the TEA1751AT/N1/S35518?
The TEA1751AT/N1/S35518 can handle power requirements of up to 250 W.
- What is the mains voltage range supported by this IC?
The IC supports a mains voltage range of 70 V (AC) to 276 V (AC).
- How does the TEA1751AT/N1/S35518 start up from the mains voltage?
The IC uses direct start-up from the rectified universal mains voltage.
- What are the key protection features of this IC?
The IC includes overcurrent protection, mains undervoltage lockout/brownout protection, and a general-purpose protection input.
- What is the significance of the dual-boost PFC in the TEA1751AT/N1/S35518?
The dual-boost PFC provides accurate maximum output voltage and is patented by NXP.
- How does the IC optimize efficiency at low-power levels?
The IC switches to frequency reduction mode and limits the peak current to 25% of its maximum value at low-power levels.
- What is the package type of the TEA1751AT/N1/S35518?
The IC is packaged in SOT109-1.
- What are the benefits of the high level of integration in this IC?
The high level of integration results in a very low external component count and a cost-effective design.
- Does the TEA1751AT/N1/S35518 support soft-start-up of the PFC and flyback controllers?
- What are some typical applications for the TEA1751AT/N1/S35518?
The IC is suitable for consumer electronics, industrial, LED lighting, medical equipment, and telecommunication power supplies.
