Contents
What is a pulse transformer?
A pulse transformer is an enhanced transformer that produces electrical pulses of great velocity and constant amplitude. They are often used in the transmitting of digital information and in transistors (particularly with gate drive circuits).
What is a resonant transformer?
A resonant transformer is a transformer in which one or both windings has a capacitor across it and functions as a tuned circuit. Used at radio frequencies, resonant transformers can function as high Q factor bandpass filters.
How do LLC converters work?
A regular LLC resonant half bridge converter works a combination mode of a voltage divider and amplifier of resonant inductor voltage of the resonant tank. As frequency deviates from the resonant frequency, the impedance of resonant tank is larger and larger, which means the voltage on load is lower and lower.
How does a resonant converter work?
Same as SRC and PRC,, the converter is working close to resonant frequency at 300V. At high input voltage, the converter is working at higher frequency far away from resonant frequency. Same as PRC and SRC, the circulating energy and turn off current of MOSFET also increase at high input voltage.
What are the 2 types of transformers?
Transformers generally have one of two types of cores: Core Type and Shell Type. These two types are distinguished from each other by the manner in which the primary and secondary coils are place around the steel core.
What is LLC considered?
A Limited Liability Company (LLC) is a business structure allowed by state statute. Most states do not restrict ownership, so members may include individuals, corporations, other LLCs and foreign entities. There is no maximum number of members. Most states also permit “single-member” LLCs, those having only one owner.
Why do we use resonant converters?
Circulating current in a resonant converter is used to charge or discharge the parasitic capacitors of the switching elements (e.g. MOSFET) during the switching dead-time, a period that all the switches are turned off.
What are the advantages of resonant converters?
LLC resonant converters display many advantages over the conventional LC series resonant converter such as narrow frequency variation over wide range of load and input variation and zero voltage switching even under no load conditions.
Where are resonant converters used?
A resonant converter is a type of electric power converter that contains a network of inductors and capacitors called a “resonant tank”, tuned to resonate at a specific frequency. They find applications in electronics, in integrated circuits.
Which transformer is used in home?
In distribution networks, the step-down transformer is commonly used to convert the high grid voltage to low voltage that can be used for home appliances.