TC7662BEPA

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TC7662BEPA is a family of DC-DC switching regulators with adjustable current, voltage, power and time protection. It provides a high-efficiency, low-noise power solution for a wide variety of applications in computing and telecommunication applications, from PCs and servers to network routers and other networked electronic components. This article describes the TC7662BEPA application field and working principle.

Application field:

The TC7662BEPA is a DC-DC switching regulator ideal for powering and protecting medium-size and small-size applications such as PCs, notebooks, tablets, set-top boxes, and cell phones. Additionally, with its low-noise design and larger, more reliable power output, the TC7662BEPA is also suitable for powering industrial controls and embedded systems, especially in mission-critical applications critical such as in medical, automotive, and aerospace applications.

Working Principle:

The TC7662BEPA is a linear adjustable switching regulator. It incorporates a high-quality bipolar power MOSFET and a high-bandwidth control loop to drive the power MOSFET. The switching pulse is provided by a 35kHz oscillator. The output voltage of the regulator is determined by the combination of the internal 0.6V reference and the adjustable error amplifier output. It also has a reset function monitoring both the input/output overvoltage and the output overcurrent. The TC7662BEPA can be configured for either constant current or constant voltage application.

In order to achieve the lowest noise level and maximum efficiency, the TC7662BEPA features a high-frequency control loop. The high-frequency control loop varies the pulse width of the power MOSFET between 0V and VCC. This limits the peak current to a value set by the internal resistor, while preserving the average current load. The result is a high-efficiency switching regulator with a low output noise and fast transient response.

The TC7662BEPA also features a low-power shutdown input and an adjustable adjustable overcurrent limit function. This prevents the regulator from providing higher currents than the maximum setting and protects the system from potential damage caused by overcurrent conditions. It is capable of delivering up to 5A of output current with a maximum output voltage of 15V, making it suitable for a wide range of applications.

The TC7662BEPA is also equipped with protective features for safety and reliability. It includes both an under-voltage and an over-voltage protection, preventing the device from providing higher voltages than the set limit. Its thermal shutdown and external PWM sensing lets the TC7662BEPA to be easily integrated into a system with a wide range of voltages and frequencies.

Conclusion:

The TC7662BEPA is a highly efficient, low-noise, adjustable DC-DC switching regulator suitable for a variety of applications, including PCs, notebook computers, tablets, set-top boxes, cell phones, and embedded systems. It features a high-frequency control loop, adjustable overcurrent limit, and thermal shutdown, making it ideal for medium-size and small-size applications. With its low-noise design, power efficiency, and robust protection, the TC7662BEPA is a great choice for powering mission-critical applications.

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