Bp3599 is a high-performance llc semi-interruptible circuit controller for integrated high-voltage start-up and power supply. It's by creating a 50% complementarities-driven waveform
Drive llc semi-bridge condensers。
Bp3599 adjusts the output voltage or current by changing the working frequency. Llc semi-bridge converter has a very wide sensory workspace and can easily achieve zero voltage
Zvs, more efficient and less efficient。
The bp3599 integrated resistance switch mechanism effectively avoids an acceptable switch in a start-up, output short circuit or output overload state。
Bp3599 also provides automatic dead zone functionality to avoid access to hard switches, reduce switch losses and increase efficiency。
A soft start is installed in bp3599, which can effectively reduce current and voltage over startup charge
Main performances
High pressure start and power supply
50% symmetrical space ratio variability drive, precise pressure control oscillation device
Zero, it's a constant flow function
It's soft
Perceptive mode protection
Zero, automatic dead zone
programmable input without pressure protection
Lightweight intermittent working mode
rich protective function
Two levels of excess protection (ocp)
output overload protection (olp)
output short circuit protection (scp)
output overpressure protection (ovp)
vcc under pressure protection (vcc uvlo)
Vcc overpressure protection (vcc ovp)
temperature protection (otp)
enter pressure protection (brown out)
Rationale
1. Llc semi-bridge conjunctive transformer pouncer
The llc semi-bridge condensator consists of a level 3 circuit, as shown below, i. E. The square wave generator, the resonance network and the current network。
the square wave generator produces the square wave voltage vsq through 50% of the space-to-space alternation switches q1 and q2. Usually, introduce in q1 and q2 driver switches
A smaller dead zone time。
the resonance network consists of the resonance of the electric capacity, the resonance of the electric sense and the magnetic sense。
the current network produces direct current voltage, and the current of communication is fixed using the current diode tube and the capacitor. The current network can be designed as a central pump structure or whole
Wave-wide stream bridge。
