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CHL8104-06CRT Application Field and Working Principle

The CHL8104-06CRT is a high-performance, high-efficiency DC/DC switching controller for mounted PoL* DC/DC converters, designed and manufactured by Richtek Technology Corporation. This controller can operate in a range from 6V to 20V and has a wide variety of features, including burst mode operation, active surge current limit, voltage navigation and load tracking, adjustable frequency control, and soft-start, making it a powerful everyday power management controller. This document will explain the application fields and working principles of the CHL8104-06CRT.

Application Fields

The CHL8104-06CRT is a highly efficient and reliable DC/DC switching controller which is ideal for a variety of high current applications, including non-isolated PoL power converters, automotive battery chargers and power supplies, lighting, ultra-fast chargers, various battery-powered appliances, laptop and cell phone chargers, and more. It’s a versatile solution that can provide consistent system efficiency across wide range of input voltages and high power outputs.

Working Principle

The CHL8104-06CRT is designed to provide an optimal power solution for low power applications. It features a synchronous buck-boost topology and a constant-frequency, current mode control with a 3-phase bridge configuration for greater efficiency and higher output power. The synchronous buck-boost topology allows it to maintain constant switching frequency over a wide range of input and output voltages, and the constant-frequency allows it to adjust the frequency quickly to compensate for changes in load current and input voltage. The current mode control also allows it to precisely control the output voltage, while the 3-phase bridge configuration allows it to reduce input current ripple. The CHL8104-06CRT also includes a slew rate and a soft-start function to reduce in-rush current and prevent load-dump. Additionally, it also includes an active surge current limit function to extend the life of the power components.

Conclusion

The CHL8104-06CRT DC/DC switching controller is an extremely versatile and reliable device for a wide range of high-current applications. Its constant-frequency current mode control, 3-phase bridge configuration, slew rate and active surge current limit functions allow for consistent system efficiency over wide range of input voltages and output currents. It is an ideal solution for non-isolated PoL applications, automotive battery chargers and power supplies, lighting, ultra-fast chargers and more.

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