LMZ36002RVQR

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Working Principle

The LMZ36002RVQR is a type of active-clamp flyback converter, which means that the converter switches the output voltage with a rapid active clamp and synchronous rectification technology.

The basic operation of the LMZ36002RVQR is similar to other isolated dc-dc converters that use the flyback topology. The basic mechanism of the flyback topology is to store energy in an air core inductor, when the primary switch of the device is opened, current flows through the inductor and creates a magnetic field. When the switch is closed, the stored energy is returned to the load, which regulates the output voltage. The active-clamp makes the current commutate from the primary to the secondary side and, at the same time, it provides an additional switch.

The converter operates at a frequency of up to 1MHz, and the transistor works in pulse-width modulation (PWM) mode at any duty cycle up to 95%. It also utilizes synchronous rectification and fast-turn-off driver circuitry for higher efficiency.

The main features of the LMZ36002RVQR are adjustable output voltage via an external resistor, power good signal, overvoltage/undervoltage protection, over-temperature protection and current limit protection. The product also has a soft power-on feature to prevent inrush current.

Conclusion

The LMZ36002RVQR is a highly advanced DC-DC converter from TI, which is specifically designed for technical applications. Its application field includes uninterrupted power supply (UPS), isolated dc-dc converters, servers, telecom and datacom systems. The product utilizes an active-clamp flyback topology, with a maximum operating frequency of 1MHz, and PWM mode up to 95%. It also has a variety of integrated features, such as adjustable output voltage, power good signal, overvoltage/undervoltage protection, over-temperature protection, current limit protection, and soft power-on feature.

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