Overview
The TEA1751T is a high-performance, universal mains switching regulator controller developed by NXP Semiconductors. This component is designed to be used in a variety of power supply applications, particularly in high-efficiency DC-DC converters. It integrates both a Discontinuous Conduction Mode (DCM) / Quasi-Resonant (QR) flyback controller and a DCM/QR Power Factor Correction (PFC) controller, making it an ideal choice for applications requiring high efficiency and reliability.
Key Specifications
| Specification | Value |
|---|---|
| Package Type | SOIC (Small Outline Integrated Circuit) |
| Pin Count | 16 |
| Dimensions | 10 x 4 x 1.45 mm |
| Maximum Operating Temperature | +150 °C |
| Minimum Operating Temperature | -40 °C |
| Mains Input Voltage | 90 V to 264 V, 47 Hz to 63 Hz |
| DC Output Voltage | 19.5 V, 2% tolerance |
| Maximum Continuous Output Current | 4.62 A |
| Peak Output Current | 7.5 A |
| Efficiency | > 87% at maximum load |
| CEC Active Mode Efficiency | > 90% |
| No Load Power Consumption | < 0.3 W |
| Output Ripple and Noise | 100 mVp-p (max.) |
| EMI Compliance | CISPR22 class B conducted EMI |
| Immunity Against ESD | EN61000-4-2 compliance |
| Harmonics Compliance | EN61000-3-2 A14 compliance |
Key Features
- Integrated DCM/QR Flyback and PFC Controllers: Combines both Discontinuous Conduction Mode (DCM) / Quasi-Resonant (QR) flyback and DCM/QR Power Factor Correction (PFC) controllers for high efficiency and reliability.
- High Efficiency: Achieves efficiency greater than 87% at maximum load and CEC active mode efficiency greater than 90%.
- Wide Input Voltage Range: Supports mains input voltage from 90 V to 264 V, with a frequency range of 47 Hz to 63 Hz.
- Robust Protection Features: Includes Short Circuit Protection (SCP), output Over-Current Protection (OCP), latched output Over Voltage Protection (OVP), and Over Temperature Protection (OTP).
- Low No Load Power Consumption: Less than 0.3 W, making it energy-efficient even in standby mode.
- Compliance with Standards: Meets various international standards such as CISPR22 class B conducted EMI, EN61000-4-2 for ESD immunity, and EN61000-3-2 A14 for harmonics.
Applications
- Notebook Adapters: Ideal for use in high-efficiency notebook adapters due to its integrated PFC and flyback controllers.
- Power Supplies: Suitable for a wide range of power supply applications requiring high efficiency and reliability.
- Consumer Electronics: Can be used in various consumer electronics that require efficient and robust power management.
- Industrial Power Systems: Applicable in industrial settings where high efficiency and compliance with international standards are crucial.
Q & A
- What is the TEA1751T used for?
The TEA1751T is used as a universal mains switching regulator controller, particularly in high-efficiency DC-DC converters and power supplies.
- What are the key features of the TEA1751T?
Key features include integrated DCM/QR flyback and PFC controllers, high efficiency, wide input voltage range, robust protection features, and low no load power consumption.
- What is the input voltage range of the TEA1751T?
The input voltage range is from 90 V to 264 V, with a frequency range of 47 Hz to 63 Hz.
- What is the maximum continuous output current of the TEA1751T?
The maximum continuous output current is 4.62 A, with a peak output current of 7.5 A.
- Does the TEA1751T have built-in protection features?
Yes, it includes Short Circuit Protection (SCP), output Over-Current Protection (OCP), latched output Over Voltage Protection (OVP), and Over Temperature Protection (OTP).
- What are the efficiency levels of the TEA1751T?
The efficiency is greater than 87% at maximum load and greater than 90% in CEC active mode.
- Is the TEA1751T compliant with international standards?
Yes, it complies with CISPR22 class B conducted EMI, EN61000-4-2 for ESD immunity, and EN61000-3-2 A14 for harmonics.
- What is the no load power consumption of the TEA1751T?
The no load power consumption is less than 0.3 W.
- What is the output ripple and noise of the TEA1751T?
The output ripple and noise is 100 mVp-p (max.).
- What are common applications of the TEA1751T?
Common applications include notebook adapters, power supplies, consumer electronics, and industrial power systems.
