Overview
The TEA1522P/N2,112 is a Switched Mode Power Supply (SMPS) controller IC from NXP USA Inc., part of the STARplug™ family. This IC is designed for low-power systems and operates directly from the rectified universal mains voltage. It is particularly suited for flyback converters and offers several advanced features such as valley switching, overvoltage protection, and undervoltage lockout. The TEA1522P/N2,112 is packaged in an 8-DIP (0.300", 7.62mm) plastic dual in-line package, making it compact and suitable for various power management applications.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit | |
|---|---|---|---|---|---|---|
| Vdrain voltage on pin DRAIN | Tj > 0 °C | -0.4 | - | +650 | V | |
| RDSon drain-source on-state resistance | Isource = −0.25 A, Tj = 25 °C | 12 | 13.8 | - | Ω | |
| VCC supply voltage continuous | - | -0.4 | - | +40 | V | |
| fosc oscillator frequency | - | 10 | 100 | 200 | kHz | |
| Idrain current on pin DRAIN | Vdrain > 60 V, no auxiliary supply | - | - | 1.5 | 2 | mA |
| VCC(startup) start-up supply voltage | - | 9 | 9.5 | 10 | V | |
| Tj junction temperature | - | -40 | - | 145 | °C |
Key Features
- Valley Switching: Minimizes capacitive switch-on losses by starting a new cycle only in the valley of the secondary ringing.
- Overvoltage Protection (OVP) and Undervoltage Lockout (UVLO): Ensures safe operation by protecting against voltage anomalies.
- Internal MOS Switch: Reduces external component count and simplifies circuit design.
- Pulse Width Modulation (PWM): Allows for efficient control of the duty cycle.
- Temperature Protection: Includes thermal protection to prevent overheating.
- Short-Circuit and Overcurrent Protection: Protects the IC and the system from short-circuit and overcurrent conditions.
Applications
- Low-Power SMPS Systems: Ideal for applications requiring efficient power conversion in low-power systems.
- Flyback Converters: Specifically designed for flyback topology, making it suitable for a wide range of power supply designs.
- Consumer Electronics: Used in various consumer electronics such as chargers, adapters, and small appliances.
- Industrial Power Supplies: Suitable for industrial applications where reliable and efficient power conversion is necessary.
Q & A
- What is the TEA1522P/N2,112 used for?
The TEA1522P/N2,112 is used as a controller IC for Switched Mode Power Supply (SMPS) systems, particularly in flyback converters.
- What is the package type of the TEA1522P/N2,112?
The IC is packaged in an 8-DIP (0.300", 7.62mm) plastic dual in-line package.
- What is the maximum drain voltage on pin DRAIN?
The maximum drain voltage on pin DRAIN is +650 V.
- What is the typical oscillator frequency range?
The oscillator frequency range is typically between 10 kHz and 200 kHz.
- Does the IC have overvoltage protection?
Yes, the IC includes overvoltage protection (OVP) and undervoltage lockout (UVLO) features.
- What is the purpose of valley switching in the TEA1522P/N2,112?
Valley switching minimizes capacitive switch-on losses by starting a new cycle only in the valley of the secondary ringing.
- What is the maximum junction temperature for the IC?
The maximum junction temperature is 145 °C.
- Does the IC have short-circuit protection?
Yes, the IC includes short-circuit and overcurrent protection features.
- What is the typical start-up supply voltage?
The typical start-up supply voltage is 9.5 V.
- What are some common applications of the TEA1522P/N2,112?
Common applications include low-power SMPS systems, flyback converters, consumer electronics, and industrial power supplies.
