Overview
The TEA18362LT/1J, produced by NXP USA Inc., is a GreenChip SMPS (Switched Mode Power Supply) control IC designed for low-cost applications. This controller IC is specifically intended for flyback topologies and is manufactured using a high-voltage Silicon-On-Insulator (SOI) process. This technology combines the advantages of low-voltage processes, such as high accuracy and speed, with the high-voltage capabilities necessary for efficient power supply operations.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | SO8 plastic small outline package; 8 leads; body width 3.9 mm (SOT96-1) |
| Supply Voltage Range | Up to 30 V |
| Operating Frequency | Quasi-Resonant (QR) mode at high power levels, Frequency Reduction (FR) or Discontinuous Conduction Mode (DCM) at lower power levels |
| Maximum Output Power | Up to 75 W |
| Start-Up Voltage | Integrated high-voltage start-up |
| Protection Features | OverPower Protection (OPP), OverTemperature Protection (OTP), OverVoltage Protection (OVP), and more |
| Efficiency Features | Valley switching, frequency reduction with fixed minimum peak current, and burst mode for low no-load power consumption |
| Storage Temperature | -55°C to 150°C |
| Junction Temperature | -40°C to 150°C |
| ESD Voltage | Human body model: ±1000 V (HV pin), ±2000 V (other pins); Charged device model: ±500 V |
Key Features
- Integrated high-voltage start-up and continuous VCC regulation during start-up and protection via the HV pin
- Reduced opto current in burst mode for low no-load power consumption
- Operating frequencies outside the audible area to minimize noise
- Integrated X-capacitor discharge function (patented)
- Adjustable soft start and power-down mode via the PROTECT pin
- Low supply current during normal operation (0.6 mA without load) and non-switching state in burst mode (0.2 mA)
- Valley switching for minimum switching losses and frequency reduction with fixed minimum peak current for high efficiency at low output power levels
- Mains voltage independent OverPower Protection (OPP), OverTemperature Protection (OTP), and other protection features
Applications
The TEA18362LT/1J is suitable for applications requiring efficient and cost-effective power supply solutions up to 75 W. It is particularly useful in designs where high efficiency, low standby power, and reliable protection features are essential. Typical applications include consumer electronics, industrial power supplies, and other devices that benefit from the controller's green features and robust protection mechanisms.
Q & A
- What is the primary application of the TEA18362LT/1J? The TEA18362LT/1J is primarily used in Switched Mode Power Supplies (SMPS) for flyback topologies, especially in applications requiring efficient and cost-effective power supply solutions up to 75 W.
- What is the supply voltage range of the TEA18362LT/1J? The supply voltage range is up to 30 V.
- What are the key protection features of the TEA18362LT/1J? The IC includes OverPower Protection (OPP), OverTemperature Protection (OTP), OverVoltage Protection (OVP), and other protection mechanisms.
- How does the TEA18362LT/1J optimize efficiency at low power levels? It uses valley switching, frequency reduction with fixed minimum peak current, and a special burst mode to minimize opto current and reduce no-load power consumption.
- What is the significance of the SOI process in the TEA18362LT/1J? The SOI process combines the advantages of low-voltage processes (accuracy, high-speed protection) with high-voltage capabilities (high-voltage start-up, low standby power).
- What are the storage and junction temperature ranges for the TEA18362LT/1J? The storage temperature range is -55°C to 150°C, and the junction temperature range is -40°C to 150°C.
- How does the TEA18362LT/1J handle ESD protection? It has ESD protection with human body model ratings of ±1000 V (HV pin) and ±2000 V (other pins), and charged device model ratings of ±500 V.
- What is the purpose of the integrated X-capacitor discharge function? The integrated X-capacitor discharge function is patented and helps in safely discharging the X-capacitor, which is essential for safety and compliance with regulatory standards.
- Can the TEA18362LT/1J be used in noisy environments? Yes, the operating frequencies are designed to be outside the audible range, minimizing noise.
- How does the TEA18362LT/1J manage overpower situations? The IC includes mains voltage independent OverPower Protection (OPP) that limits the output power in overpower situations and switches to a low-power mode if the output is shorted.
