NCP4302BDR2G

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The NCP4302BDR2G is a power supply controller, monitor and voltage supervisor device designed to provide embedded applications with accurate power control, monitoring, overheating and under-voltage protection. This device integrates a PWM controller with a new low-voltage, high-efficiency channel architecture to provide a wide input voltage range, high-efficiency and flexible output voltage options. It offers a power-on-reset (POR) feature and is capable of providing up to 3A of output current. It also provides programmable over-temperature protection (OTP) and over-voltage/under-voltage protection (OVP/UVP) functions.

Applications

The NRC4302BDR2G is suitable for a variety of applications including:

• Desktop PCs
• Notebook PCs
• Tablets
• Power over Ethernet (PoE) systems
• DVRs/Set-top boxes
• LCD TVs
• Industrial control systems
• Personal digital assistants (PDAs)
• Automatic test equipment (ATEs)
• White goods

This device is also suitable for powering peripherals such as hard drives, fans, and optical drives.

Working Principle

The NCP4302BDR2G operates using a switching buck architecture. It uses an external PWM signal, typically a clock signal, to generate the necessary control waveforms for power regulation. The device can operate over a wide input voltage range from 5 to 30V and provide adjustable output voltages with a maximum of 6V. It also provides programmable over-temperature and over-voltage/under-voltage protection. The device operates by regulating the output voltage through the use of a switching network. The device contains transistors that are switched on and off by the external PWM signal to drive the output voltage.

The device has a power-on-reset (POR) feature that prevents high-energy events from damaging the device. When power is applied to the device, a high-efficiency internal latch is enabled, preventing potential voltage glitches. In the event of a power loss, the device automatically latches off, providing the necessary protection.

In addition to regulation, the device also provides programming options for over-temperature and over-voltage/under-voltage protection. These features provide extra protection against high voltage transients or prolonged temperature fluctuations. The device is also capable of providing up to 3A of output current, making it suitable for a variety of applications.

The NCP4302BDR2G is a versatile, efficient and cost-effective solution for a variety of power-management needs. It provides robust power control and monitoring capabilities and is ideal for a variety of embedded applications.

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