CHL8214-02CRT

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The CHL8214-02CRT is a step-down DC/DC controller designed to provide a cost-effective solution for applications up to 10V output voltage regulation. It features low standby current, fast transient response, and good line/load transient performance. In addition, the device supports Adaptive Voltage Positioning (AVP) offerring fast line/load transient response and output accuracy with ease of design.

CHL8214-02CRT is a constant-on-time (COT) buck DC/DC controller which is capable of providing high efficiency and fast transient response for step-down DC/DC converters. It is suitable for both low and high input voltage applications where high efficiency and small solution size are required. CHL8214-02CRT has a built-in 400 mV voltage reference providing stable output voltage, even under varying input and load conditions.

The CHL8214-02CRT is a compact DC/DC controller IC that enables the development of a high-efficiency DC/DC step-down (buck) regulator. It features a simple PWM architecture and offers variable frequency and adjustable switching frequency. The device can also accommodate a wide range of input voltage, up to 28V. It supports soft-start and low-current shutdown options.

The CHL8214-02CRT supports current-mode control, which offers good line and load transient responses and excellent light-load efficiency. It is designed to operate at a fixed frequency in voltage mode control and is capable of operating up to 500KHz in frequency mode. The device includes a wide input range, fast soft-start, adjustable on-time, Cycle-by-Cycle Current Limit, and a powerful gate driver output.

Application fields of CHL8214-02CRT include but not limited to laptop adapter, high power battery chargers and adapters, hard disk drivers, mobile phones and myriads of commercial and industrial equipment that require a regulated voltage source. Its wide input range, fast transient response and low standby current, makes it an excellent choice for quick and efficient regulation of multiple output voltages.

Working principles of CHL8214-02CRT is based on that of a buck converter. A buck converter is a popular DC/DC converter topology which is used for managing the power drawn from a DC source by a load. The CHL8214-02CRT uses the buck topology, which rectifies and regulates a higher DC voltage to a lower output voltage. The high side switch, through which the load current is passed, is controlled by a signal generated by the CHL8214-02CRT, based on the monitoring of current draw at the load. When the load current rises above the trigger point, the output signal to the high side switch deactivates thus providing regulation and reducing the load current.

CHL8214-02CRT is a versatile DC/DC buck controller which offers fast transient response and low standby current, making it a reliable and cost-effective solution for regulation of multiple output voltages. It also features adjustable on-time, Cycle-by-Cycle Current Limit, and supports wide input range, thus making it an ideal choice for system design.

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