XC9235A12CER-G

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XC9235A12CER-G is a DC DC switching regulator belonging to the PMIC (Power Management Integrated Circuit) voltage regulators family. This kind of device finds its main application in the management of power supplies for small, low power systems. In this article, we will focus on the working principle and application field of this DC DC switching regulator.

Overview

Compared to traditional linear regulators, DC DC switching regulators have several advantages: they can provide much higher conversion efficiency and they maintain their high efficiency over a very wide range of output currents and voltages. The XC9235A12CER-G is a DC DC switching regulator specifically designed for applications requiring the conversion of an input voltage of 6 to 12V to an output voltage of 3.3V. It features a stand-by mode (<1µA) and a quasi-constant on-time control.

Functions and Features

The XC9235A12CER-G integrates several features and functions within its integrated control and output stages. The integrated regulators and their controller provide several protection features such as Over-Voltage Protection (OVP) and Over-Current Protection (OCP). The OVP is triggered when the input voltage exceeds 12.3V and the OCP is triggered when the output current exceeds 1.5A.

This switching regulator also provides high-efficiency power conversion by combining low switching losses and low output voltage ripple, as well as high-frequency operation at 500 kHz. This frequency allows small external components such as inductors and capacitors to be used, which keep the total solution size at a minimum. The output voltage is adjustable via an external resistor divider and the maximum output power is 3.2W.

Working Principle

As mentioned before, XC9235A12CER-G is a DC DC switching regulator, which means it uses an electronic switch at the input and a diode at the output to convert voltage. When the switch is ON, the input voltage is applied to the output through the switch. When the switch is OFF, the output is connected to ground via the diode and the input voltage is no longer applied. This switching is what creates the output voltage.

The regulator also includes a voltage feedback mechanism to maintain a constant output voltage despite varying load current. The feedback mechanism consists of two components: a voltage regulator and a control circuit. The voltage regulator is used to compare the output voltage to the reference voltage, while the control circuit is used to adjust the switch duty cycle accordingly to keep the output voltage at the desired level.

Application Field

The XC9235A12CER-G DC DC switching regulator can be used in a wide variety of applications, such as in the automotive industry, mobile devices, industrial control systems and home appliances. In the automotive industry, it can be used to provide power to automotive ECUs and other accessories that require a constant voltage despite varying load current. In the mobile device industry, it is used to provide voltages for smaller electronic components. In industrial control systems and home appliances, it is used to convert a higher input voltage to a lower output voltage for use in the system.

Conclusion

In conclusion, the XC9235A12CER-G is a DC DC switching regulator belonging to the PMIC voltage regulators family. It is specifically designed for applications requiring the conversion of an input voltage of 6 to 12V to an output voltage of 3.3V and is ideal for use in energy efficient designs. It also provides a range of functions and features such as Over-Voltage and Over-Current protection as well as high-efficiency power conversion and high-frequency operation. Finally, its application field mainly consists of the automotive, mobile device, industrial control and home appliance industries.

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