ISL6559CRZ-TR5265

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ISL6559CRZ-TR5265 is an integrated digital control inductor-based DC/DC switching regulator controller optimized for power supply design. It has high performance and secure implementation of voltage and current regulation. It is often used in many practical applications and its working principle is the output is regulated by the switching frequency and time on the switch, the energy is then stored in the inductor and then release it to the output. This helps maintain the output voltage independent of the output load current or input supply voltage.

Application Field of ISL6559CRZ-TR5265

ISL6559CRZ-TR5265 is usually used in server and communication equipment power supply design. It is suitable for high current applications such as FPGA and ASICs, as well as multi-strata board stacks with Board power supplies. It is also a highly versatile DC/DC switching regulator controller, which can be used for a wide range of applications. It is suitable for applications such as STBs, DSL line cards, telecom, computers, handheld devices and automotive.

Working principle of ISL6559CRZ-TR5265

The working principle of ISL6559CRZ-TR5265 is based on the pulse width modulated (PWM) control. The PWM controls a buck/boost switching regulator according to the parameters selected by users. It is based on a digital slicer and a clock-driven state machine to guarantee control loop stability. The Enable/Disable control logic controls the external MOSFET and the system turns on or off by its output. It allows an adjustable switching frequency that can be set to up to 500 kHz; the minimum load current is 5mA and the maximum load current is 5A.

The system uses a Proportional-Integral (PI) control loop to maintain temperatures and stability. It includes an adjustable hysteresis comparator, which gives an open-loop output. This output provides the analog voltage regulation loop with a reference voltage, which is then compared to the output voltage. This then provides feedback, which is used to control the output voltage. The system also features overvoltage and undervoltage protections, plus tolerance windows, dependent on voltage sensing.

The ISL6559CRZ-TR5265 also comes with integrated diagnostics and protection features. The system will shut down in the event of a fault—such as over temperature, overload or over current—and will provide error or alert messages to the user. The system also implements current sharing and supports multiple outputs simultaneously.

Conclusion

ISL6559CRZ-TR5265 is an integrated digital control inductor-based DC/DC switching regulator controller, which is optimized for server and communication equipment power supply design. It is a highly versatile DC/DC switching regulator controller, which can be used for a wide range of applications. Its working principle is based on pulse width modulation (PWM) control with a Proportional-Integral (PI) control loop. It also comes with integrated diagnostics and protection features.

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