Overview
The TEA1751T/N1,518 is a highly integrated Switched Mode Power Supply (SMPS) controller IC produced by NXP USA Inc. This third-generation controller combines a Power Factor Correction (PFC) controller and a flyback controller, enabling the design of highly efficient and reliable power supplies up to 250 W. The TEA1751T features a high level of integration, reducing the number of external components required, and incorporates proprietary high-voltage BCD800 and low-voltage Silicon On Insulator (SOI) technologies for accurate and high-speed protection functions and control.
Key Specifications
| Parameter | Value |
|---|---|
| Package | SO16 plastic, small outline package; 16 leads; 1.27 mm pitch |
| Input Voltage Range | 70 VAC to 276 VAC |
| Power Rating Max | 250 W |
| Topology | Flyback with integrated PFC |
| No. of Pins | 16 Pins |
| IC Case / Package | SOIC |
Key Features
- Integrated PFC and flyback controller for universal mains supply operation
- Dual-boost PFC with accurate maximum output voltage (NXP patented)
- High level of integration, resulting in a very low external component count and a cost-effective design
- On-chip start-up current source
- Valley/Zero Voltage Switching (ZVS) for minimum switching losses (NXP patented)
- Frequency limitation to reduce switching losses
- Low and adjustable OverCurrent Protection (OCP) trip level for both converters
- General-purpose input for latched protection to provide system OverTemperature Protection (OTP)
Applications
The TEA1751T/N1,518 is suitable for all applications requiring efficient and cost-effective power supply solutions up to 250 W. It is particularly beneficial for notebook adapters due to its high level of integration and efficiency features.
Q & A
- What is the maximum power rating of the TEA1751T/N1,518?
The maximum power rating is 250 W. - What is the input voltage range of the TEA1751T/N1,518?
The input voltage range is from 70 VAC to 276 VAC. - What type of package does the TEA1751T/N1,518 come in?
The TEA1751T/N1,518 comes in a SO16 plastic, small outline package with 16 leads and a 1.27 mm pitch. - What are the key features of the TEA1751T/N1,518?
The key features include integrated PFC and flyback controller, dual-boost PFC, high level of integration, on-chip start-up current source, and Valley/Zero Voltage Switching (ZVS). - What applications is the TEA1751T/N1,518 suitable for?
The TEA1751T/N1,518 is suitable for all applications requiring efficient and cost-effective power supply solutions up to 250 W, particularly notebook adapters. - What technologies are used in the TEA1751T/N1,518?
The TEA1751T/N1,518 uses proprietary high-voltage BCD800 and low-voltage Silicon On Insulator (SOI) technologies. - How does the TEA1751T/N1,518 manage overcurrent protection?
The TEA1751T/N1,518 manages overcurrent protection through cycle-by-cycle sensing of the voltage across an external sense resistor via the PFCSENSE pin. - What is the purpose of the VINSENSE pin in the TEA1751T/N1,518?
The VINSENSE pin is used for mains undervoltage lockout/brownout protection to prevent the PFC from operating at very low mains input voltages. - Does the TEA1751T/N1,518 support frequency reduction at lower power levels?
Yes, the TEA1751T/N1,518 supports frequency reduction at lower power levels to maintain high efficiency and minimize audible noise. - How does the TEA1751T/N1,518 ensure high efficiency at low-power conditions?
The TEA1751T/N1,518 ensures high efficiency at low-power conditions by switching to frequency reduction mode and limiting the peak current to 25% of its maximum value.
