1 Features
Push-pull topology
High
integration, simple peripheral
Built
-in 24V /0.1Ω LDMOS
1.7A Current Clamp Limit
2.3-6V input voltage range
With frequency synchronization function
Enable
shutdown function
Sustainable
short-circuit protection, over-temperature protection, self-recovery
Chip
operating temperature -40℃~+125℃
2 Fields of application
CAN\RS-485\RS-232\SPI\I2C and other low-power isolated power supplies
Process control
Precision
instruments\medical instruments
Distributed
power supply\radio power supply\telecom power supply
Low
noise isolated USB power supply
Low
noise filament power supply
IGBT gate drive power supply
3 Description
The VPS8505 is a small size, low standby power micropower
The push-pull transformer driver designed for high-rate isolated power supply, its peripheral only needs
Match simple input and output filter capacitors, isolation transformers and rectifiers
3.3V or 5V input, 3.3V~24V output, output
An isolated power supply with a power of 1~3W.
The VPS8505 chip integrates an oscillator, providing a pair of high-precision
Complementary signals to drive two N-channel MOSFETs. The chip internally follows the
Symmetrical structure design can effectively ensure the height of the two power MOSFETs
Symmetry, to avoid biasing of the circuit during operation. The chip has enable
Function and frequency synchronization function, and the internal design has a high-precision dead zone control
The control circuit ensures that there is no common phenomenon under various operating conditions.
