CHL8325A-34CRT

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CHL8325A-34CRT is a pre-engineered, dual-output DC-to-DC switching controller designed to provide high-efficiency and high-current output regulation. This device is specifically designed to support applications with tight voltage control and multi-rail power requirements. It targets telecommunications and networking industrial applications requiring a single or multi-voltage rail solution.

The high power level controller incorporates a pulse-width modulation (PWM) control architecture to deliver a regulated output voltage with excellent efficiency. The device features a high frequency Fixed Frequency PWM (FFPWM) control mode that provides excellent transient response and helps eliminate external components. It also has a voltage sense pre-regulation to ensure stability and regulate line/load transients.

The CHL8325A-34CRT is also designed with advanced power management capabilities such as a built-in protection circuit, output over current limiter, over-temperature protection, over voltage protection and under voltage protection. Furthermore, the controller is capable of adjusting the switching frequency in order to optimize efficiency. This feature allows the controller to operate efficiently at different load levels.

The CHL8325A-34CRT comes in a thermally enhanced QFN packaging and operates over a -40°C to +85°C temperature range. This device is well suited for applications in telecommunications and networking equipment like routers, switches, hubs, base stations, and industrial automation systems.

The CHL8325A-34CRT operates according to the following basic principles. It uses an internal preset voltage reference (VREF) to compare with the voltage of the feedback network. If a mismatch is identified, the pulse width modulation (PWM) comparator triggers the internal PWM oscillator, which adjusts the duty cycle of the two output channels so that each channel maintains the value of the reference. Once the new duty-cycle has been determined, the controller maintains it until the next set of inputs.

The CHL8325A-34CRT also has several other control features that allow it to adapt to the changing needs of the system. It can adjust the switching frequency to minimize current noise, minimize the output ripple and improve efficiency while compensating for temperature variations. In addition, the controller can implement current sharing, synchronization of multiple outputs and multiple voltage output sequencing.

The CHL8325A-34CRT is a highly efficient and reliable switching controller that is suitable for mission critical applications. It is designed for space constrained, high density designs and offers flexibility when changing the output voltage level. With its low power consumption, wide operating temperature range and built-in protection features, it is an excellent choice for telecom, networking and industrial applications.

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