CHL8325A-19CRT

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The CHL8325A-19CRT is a programmable current-mode switching controller for DC/DC converters. It is compliant to the industry standard PMIC (Power Management Integrated Circuit) voltage regulators and DC-DC switching controllers. This device is suitable for any type of high voltage DC/DC converter, including dual-output, full-bridge and multi-phase converter topologies. It offers several features such as an adjustable soft-start time, a wide range of adjustable output voltage settings and support for an advanced N-channel MOSFET controller. Its main features include adjustable current limit and line compensation, advanced N-channel MOSFET power switch, over voltage protection and programmable soft-start. Additionally, it supports over temperature protection with hysteresis, and fast current foldback/short-circuit protection.

The CHL8325A-19CRT device can be used in various applications, including applications with power factor correction (PFC) circuits, DC/DC converters, automotive applications, uninterruptible power supply (UPS) systems and power over Ethernet (PoE). It is also suitable for use in high frequency, high current and high efficiency systems. The device can be used with a wide range of current ratings up to 4 A. It is capable of working at high voltage of 450 V and switching frequencies up to 500 kHz.

The working principle of a CHL8325A-19CRT DC/DC switching controller is based on the following elements: an adjustable current limit, a wide-band line compensation, an adjustable PWM frequency and a programmable soft-start circuit. The controller is designed to adjust the switching frequency of the primary switch based on the voltage and current feedback signals provided by a shunt voltage regulator. The device regulates the current by modulating the switching frequency of the primary switch with adjustable PWM frequency and adjustable current limit. The adjustable soft-start circuit ensures smooth ramp up of the output voltage and steady current delivery. The device is also equipped with an advanced N-channel MOSFET power switch to ensure efficient switching, and an over voltage protection to ensure the safety of the system. Additionally, the device features over temperature protection with hysteresis for protecting the system from the effects of device overload.

In conclusion, the CHL8325A-19CRT is a programmable current-mode switching controller that is compliant to the industry standard PMIC (Power Management Integrated Circuit) voltage regulators and DC-DC switching controllers. It can be used in various applications, including applications with power factor correction (PFC) circuits, DC/DC converters, automotive applications, uninterruptible power supply (UPS) systems and power over Ethernet (PoE). It offers several features such as an adjustable soft-start time, a wide range of adjustable output voltage settings and support for an advanced N-channel MOSFET controller. Its working principle is based on an adjustable current limit, a wide-band line compensation, an adjustable PWM frequency and a programmable soft-start circuit. The device regulates the current by modulating the switching frequency of the primary switch with adjustable PWM frequency and adjustable current limit.

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