Overview
The TEA1752T/1791/DB/9, produced by NXP USA Inc., is a highly integrated power management IC designed for high-efficiency power supplies. It combines a controller for Power Factor Correction (PFC) and a flyback controller, making it suitable for designing cost-effective and efficient Switched Mode Power Supplies (SMPS). This third-generation green SMPS controller IC features advanced green functions that ensure high efficiency across all power levels, including quasi-resonant operation, valley skipping, and reduced frequency operation at lower power levels. The IC is part of a Multi-Chip Module (MCM) that includes two chips: one using the high-voltage BCD800 process for direct start-up from the rectified universal mains voltage, and another using low-voltage Silicon On Insulator (SOI) for accurate and high-speed protection functions and control.
Key Specifications
| Parameter | Description |
|---|---|
| Package Type | 16-Pin SO (Small Outline) |
| Switching Frequency | Up to 150 kHz |
| Start-Up Supply Current | Typically 5.4 mA |
| Minimum Operating Supply Voltage | Vth(UVLO) - typically around the UVLO turn-on threshold |
| Maximum Operating Supply Voltage | Vstartup - typically around the start-up voltage level |
| Minimum Operating Temperature | -40°C |
| Maximum Operating Temperature | 150°C |
| Topology | Quasi-resonant flyback and PFC |
| Maximum Duty Cycle | Dependent on the specific application and configuration |
| UVLO Turn-On Threshold | Vth(UVLO) |
| UVLO Turn-Off Threshold | Vtrip |
Key Features
- High Integration: Combines PFC and flyback controllers, reducing the number of external components needed.
- Efficiency: High efficiency at all power levels through quasi-resonant operation, valley skipping, and reduced frequency operation at lower power levels.
- Green Functions: Special built-in green functions ensure high efficiency and good standby power performance while minimizing audible noise.
- Multi-Chip Module (MCM): Includes high-voltage BCD800 process and low-voltage Silicon On Insulator (SOI) for accurate and high-speed protection functions and control.
- Low Power Mode: PFC switches off at low power levels, and the flyback controller switches to frequency reduction mode to maintain high efficiency.
- Compliance: Compliant with EU RoHS regulations (2011/65/EU, 2015/863).
Applications
- Power Supplies: Suitable for designing highly efficient and reliable power supplies up to 250 W.
- Adapters and Chargers: Ideal for AC to DC power supplies, including adapters and chargers.
- Industrial and Consumer Electronics: Used in various industrial and consumer electronic devices requiring high-efficiency power management.
Q & A
- What is the TEA1752T/1791/DB/9 used for?
The TEA1752T/1791/DB/9 is used for designing high-efficiency power supplies, combining PFC and flyback controllers.
- What are the key features of the TEA1752T?
Key features include high integration, high efficiency at all power levels, special green functions, and a Multi-Chip Module (MCM) design.
- What is the switching frequency of the TEA1752T?
The switching frequency is up to 150 kHz.
- How does the TEA1752T handle low power conditions?
At low power levels, the PFC switches off, and the flyback controller switches to frequency reduction mode to maintain high efficiency and minimize audible noise.
- Is the TEA1752T compliant with EU RoHS regulations?
Yes, it is compliant with EU RoHS regulations (2011/65/EU, 2015/863).
- What is the maximum operating power of the TEA1752T?
The TEA1752T can handle power supplies up to 250 W.
- What type of package does the TEA1752T come in?
The TEA1752T comes in a 16-Pin SO (Small Outline) package.
- How does the TEA1752T start up from the mains voltage?
The TEA1752T uses a high-voltage BCD800 process for direct start-up from the rectified universal mains voltage.
- What are the typical operating temperatures for the TEA1752T?
The typical operating temperatures range from -40°C to 150°C.
- What kind of topology does the TEA1752T support?
The TEA1752T supports quasi-resonant flyback and PFC topologies.
