11W150-404

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The 11W150-404 application field is a power electronic converter designed to process AC power signals of 15-30 Volts DC. It is used to provide a regulated direct current power supply for electronic devices such as remote control, television sets, sound cores and other portable consumer electronics. The working principle is to employ pulse width modulation (PWM) techniques to convert AC power signals into linear AC currents, and the low frequency sine wave output from the secondary stage of the device can be further polarity and current amplified through an internal switching converter. The 11W150-404 power supplies operates in two distinct modes: Standby and Regulated. In the Standby mode, the device is in standby mode, and no output power is emitted. In the Regulated mode, the device supplies the high voltage and current pulses to the load. The output voltage is regulated by controlling the peak and valley of the waveform. The output current is regulated by controlling the pulse width of each period.

The 11W150-404 AC-DC converter consists of three main building blocks; the power section, the control section and the monitoring section. The power section is mainly composed of active and passive components including the power semiconductor switches, transformers and capacitors; in addition to various circuit protections. The control section is comprised of the PWM or PFC controller, the peak current mode (PCM) controller, the integrated power supply system (IPSS) controller; and on board control logic. The monitoring section consists of the peak current detector, over current and over-voltage detector, low voltage and low current detector; as well as hall effect current sensing.

The PWM controller is responsible for controlling the duty cycle of the power semiconductor switches, so as to change the output power of the converter. The peak current mode (PCM) controller provides high peak current control for improved harmonic performance of the device; while the IPSS controller is used to monitor and regulate the efficiency and other parameters of the system in real time. The peak current detector is used to measure the maximum current that can circulate through the system, while the over current and over-voltage detector avoids any potential over-current and over-voltage situations. The low voltage and low current detector completes the monitoring of the system to ensure that all parameters are within their specified limits.

In conclusion, the 11W150-404 application field and working principle covers the defining qualities of a power electronic converter such as power section, control section and monitoring section. This device operates in two distinct modes, Standby and regulated, where the output voltage is controlled by the peak and valley of the waveform, and the output current is regulated by the pulse width of each period. Moreover, the system can be monitored by various appropriate detectors, to ensure safe operation.

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