Overview
The TEA1751AT/N1,518 is a highly integrated power management IC developed by NXP USA Inc. This component is part of the GreenChip™ III series, designed to enable the creation of highly efficient and reliable switched-mode power supplies (SMPS). The TEA1751AT combines a controller for Power Factor Correction (PFC) and a flyback controller, making it suitable for a wide range of applications requiring high power efficiency and minimal external components.
Key Specifications
| Parameter | Value |
|---|---|
| Operating Temperature | -40°C ~ 150°C (TJ) |
| Topology | Flyback |
| Mounting Type | Surface Mount |
| Power (Watts) | 250 W |
| Frequency - Switching | 100kHz ~ 150kHz |
| Voltage - Start Up | 15 V |
| Voltage - Supply (Vcc/Vdd) | 8V ~ 38V |
| Package / Case | 16-SOIC (0.154", 3.90mm Width) |
| Output Isolation | Isolated |
| Fault Protection | Current Limiting, Over Power, Over Temperature, Over Voltage |
Key Features
- Integrated PFC and Flyback Controller: Combines both PFC and flyback control in a single IC, reducing the number of external components and enhancing design efficiency.
- Universal Mains Supply Operation: Supports operation from 70 V (AC) to 276 V (AC), making it versatile for various global power standards.
- Dual-Boost PFC: Features accurate maximum output voltage control using NXP's patented technology.
- Green Functions: Includes on-chip start-up current source, valley/zero voltage switching (ZVS) for minimal switching losses, and frequency limitation to reduce switching losses.
- High Efficiency at Low Power: The flyback controller switches to frequency reduction mode and limits peak current to 25% of its maximum value at low-power conditions, ensuring high efficiency and good standby power performance.
- Advanced Protection Features: Includes current limiting, over power, over temperature, and over voltage protection to ensure reliable operation).
Applications
- AC-DC USB Chargers for Cell Phones: Ideal for high-efficiency charging applications.
- Switching Power Supplies: Suitable for a variety of SMPS designs requiring high power efficiency and reliability).
- General Power Supplies: Can be used in various power supply designs where high efficiency and minimal component count are crucial).
Q & A
- What is the TEA1751AT/N1,518 used for?
The TEA1751AT/N1,518 is used for designing highly efficient and reliable switched-mode power supplies (SMPS), particularly in applications requiring integrated PFC and flyback control.
- What is the operating temperature range of the TEA1751AT/N1,518?
The operating temperature range is -40°C to 150°C (TJ)).
- What is the maximum power handling capacity of the TEA1751AT/N1,518?
The maximum power handling capacity is up to 250 W).
- What are the key protection features of the TEA1751AT/N1,518?
The key protection features include current limiting, over power, over temperature, and over voltage protection).
- What is the switching frequency range of the TEA1751AT/N1,518?
The switching frequency range is 100kHz to 150kHz).
- What type of package does the TEA1751AT/N1,518 come in?
The TEA1751AT/N1,518 comes in a 16-SOIC package).
- Does the TEA1751AT/N1,518 support universal mains supply operation?
Yes, it supports operation from 70 V (AC) to 276 V (AC)).
- What are some of the green features of the TEA1751AT/N1,518?
The green features include on-chip start-up current source, valley/zero voltage switching (ZVS), and frequency limitation to reduce switching losses).
- How does the TEA1751AT/N1,518 handle low-power conditions?
At low-power conditions, the flyback controller switches to frequency reduction mode and limits the peak current to 25% of its maximum value, ensuring high efficiency and good standby power performance).
- What are some common applications of the TEA1751AT/N1,518?
Common applications include AC-DC USB chargers for cell phones and general switching power supplies).
