Overview
The TEA18362T is a controller IC designed for low-cost Switched Mode Power Supplies (SMPS) by NXP Semiconductors. It is specifically intended for flyback topologies and incorporates various 'green' functions to enhance efficiency across all power levels. This IC is part of NXP's GreenChip family, focusing on reducing power consumption and improving overall system efficiency.
Key Specifications
| Parameter | Description |
|---|---|
| Supply Voltage Range | Up to 30 V |
| Operating Modes | Quasi-Resonant (QR), Frequency Reduction (FR), Discontinuous Conduction Mode (DCM), Burst Mode |
| Switching Frequency | Minimum of 25 kHz in burst mode, burst frequency below 800 Hz |
| Package Type | SO8 plastic small outline package; 8 leads; body width 3.9 mm |
| Power Handling | Up to 75 W |
| Protection Features | OverPower Protection (OPP), OverTemperature Protection (OTP), OverVoltage Protection (OVP), Continuous mode protection using demagnetization detection |
| Start-up and Regulation | Integrated high-voltage start-up, continuous VCC regulation during start-up |
Key Features
- SMPS controller IC for low-cost applications
- Large supply voltage range (up to 30 V)
- Integrated high-voltage start-up and continuous VCC regulation during start-up
- Reduced opto current in burst mode for low no-load power consumption
- Valley switching for minimum switching losses
- Frequency reduction with fixed minimum peak current to maintain high efficiency at low output power levels
- Integrated X-capacitor discharge (patented)
- Adjustable soft start and power-down mode via the PROTECT pin
Applications
The TEA18362T is suitable for applications requiring efficient and cost-effective power supply solutions up to 75 W. This includes a variety of consumer and industrial electronics that benefit from high efficiency and low standby power consumption.
Q & A
- What is the primary application of the TEA18362T IC?
The TEA18362T is primarily used in low-cost Switched Mode Power Supplies (SMPS) for flyback topologies. - What are the key operating modes of the TEA18362T?
The IC operates in Quasi-Resonant (QR), Frequency Reduction (FR), Discontinuous Conduction Mode (DCM), and Burst Mode. - What is the maximum supply voltage range for the TEA18362T?
The maximum supply voltage range is up to 30 V. - How does the TEA18362T manage power consumption at low power levels?
The IC reduces power consumption at low power levels by switching to burst mode, which minimizes the opto current and maintains high efficiency. - What protection features are integrated into the TEA18362T?
The IC includes OverPower Protection (OPP), OverTemperature Protection (OTP), OverVoltage Protection (OVP), and continuous mode protection using demagnetization detection. - What is the significance of valley switching in the TEA18362T?
Valley switching minimizes switching losses, contributing to higher overall efficiency. - How does the TEA18362T handle start-up and regulation?
The IC features integrated high-voltage start-up and continuous VCC regulation during start-up. - What is the package type of the TEA18362T?
The package type is SO8 plastic small outline package with 8 leads and a body width of 3.9 mm. - What is the maximum power handling capacity of the TEA18362T?
The maximum power handling capacity is up to 75 W. - Is the TEA18362T compliant with environmental regulations?
Yes, it is PbFree, EU RoHS compliant, and halogen-free.
