PT6222C

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DC-DC converters are electronic devices which are used to convert a constant DC power source to another DC power source with different voltage and current requirements. PT6222C is a DC-DC converter that is widely used in the consumer electronics industry. This article will discuss the application field and the working principle of the PT6222C.

The PT6222C is a two-terminal serial switching DC-DC converter. It is used for a wide range of applications, including mobile phones, computer peripherals, LCD monitors, car audio systems, and digital cameras. The PT6222C has multiple features that make it well-suited for these applications. It has a low output ripple voltage of only 23 mV, which ensures a smooth output signal. The low stand-by current is 50 uA, effectively reducing the system power consumption. It also provides over-temperature and over-current protection to ensure the safety of the system, and its high efficiency of 90 percent ensures that the power supply circuit is long lasting. Furthermore, the operating voltage is adjustable from 5 V to 24 V, making it suitable for a variety of application profiles.

The PT6222C DC-DC converter works according to the principle of Pulse Width Modulation (PWM). In PWM, the input voltage is modulated by controlling the pulse widths of the switching transistor. The input voltage is first rectified and then conditioned by a low-pass filter. The rectified current is then fed into a control unit and the control unit produces a pulse some pulses of varying widths. When the pulse width is greater than a preset threshold, the transistor turns on and the current flows from the input to the output. If the pulse width is below the threshold, the transistor will remain off and no current will pass through. Thus, the output voltage is determined by the pulse width ratio produced by the control unit.

The PT6222C is an ideal DC-DC converter for electronics applications that require reliable, efficient and low-power operations. Its adjustable operating voltage, high efficiency and low stand-by current make it a great choice for portable devices and other small systems. Furthermore, its over-temperature and over-current protection ensures that power supply circuit is safe and long lasting.

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