S-812C56BPI-C5KTFU Datasheet/PDFPMIC – Voltage Regulators – Linear
The S-812C56BPI-C5KTFU is an energy efficient and reliable linear voltage regulator capable of providing a current output of up to 500mA. It features an adjustable output voltage range from 1.2 to 5.7V and is designed for high-power applications. It is ideal for use in industrial automation and telecommunications applications.
Features
- Adjustable output voltage range of 1.2 to 5.7V.
- Current output up to 500 mA.
- High efficiency.
- Designed for high power applications.
- Designed for transient overcurrent protection.
- Built-in short-circuit protection.
- Large input range.
Applications
- Industrial automation.
- Telecommunications.
- Power management.
- Ambient lighting.
- Medical equipment.
- Consumer electronics.
Working Principle
The S-812C56BPI-C5KTFU is designed using a constant current, LLC-coupled series regulator topology. It is comprised of five blocks; an input voltage stage, an error amplifier, a loop compensation, a PWM controller, and an output stage with drivers, allowing the current regulator to easily and accurately control the output current. The input stage of the circuit contains a filtering capacitor, an LDO, and an optocoupler. The LDO serves to regulate the voltage to the required level and the optocoupler serves to identify the input voltage status and inform the PWM controller. The error amplifier provides necessary information and the output stage provides current to the load.
The regulator uses a constant current loop control method to regulate the current, with periodic sampling of the output currents. The sampled data is compared to the desired current that has been set by the optocoupler. If the actual current is smaller than the desired current, this information is sent to the loop compensation and the output stage is driven to increase the current to match the desired current. If the actual current is higher than the desired current, the output stage is driven to reduce the current until it matches the desired current.
The regulator further features built-in overcurrent protection, so that if an excessive current is detected the output stage is shut down and the power supply is disabled. This helps prevent any damage to the power supply or other components of the system.
Conclusion
The S-812C56BPI-C5KTFU is an energy efficient and reliable linear voltage regulator capable of providing a current output of up to 500mA. It features an adjustable output voltage range from 1.2 to 5.7V and is designed for high-power applications. It is suitable for use in a wide range of industrial automation, telecommunications, power management, ambient lighting, medical equipment, and consumer electronics applications. The current regulator is designed using a constant current, LLC-coupled series regulator topology and features a built-in overcurrent protection circuit to ensure safety and reliability.