SG3524DG4

SG3524DG4 Application Field and Working Principle

SG3524DG4 belongs to a subcategory of power integrated circuits (ICs) called Pulse-Width Modulation (PWM) controllers. These are type of PMIC (Power Management Integrated Ciruits) components, specifically Voltage Regulators and DC DC Switching Controllers. SG3524DG4 is an isolated flyback converter PWM controller with an integrated hi-side driver.

SG3524DG4’s application fields include: semiconductor industrial-grade power supplies, circulating coolers, lighting systems, motor driver schemes and fully-isolated DC/DC converters.

SG3524DG4 Features

The main features of the SG3524DG4 includes:

• High-speed VG switching (1.3MHz typical) with low quiescent current (Iq) of 2mA
• Integrated hi-side MOSFET driver with a external MOSFET for enhanced efficiency and power dissipation when operating in current-mode switching.
• Polarity protection for both sides of the diode bridge
• Under voltage lock out (UVLO) and soft start
• Over temperature protection (OTP)
• Multi-function opto-cmpatible pin (D1) for open loop system with idealized load current sensing
• Asymmetrical PWM dimming control and more

SG3524DG4 Working Principle

SG3524DG4\'s working principle is based on the principle of pulse-width-modulation. It employs a type of \'switched-mode\' power supply that provides an output voltage or current that is proportional to the input voltage. The working principle involves converting the input voltage to an on-off signal which is used to switch a power transistor in the output circuit. The PWM controller then amplifies this signal and the output voltage or current is controlled by the duty cycle of the pulse-width modulation.

It works by connecting the PWM controller to a DC power source, and then to the output load. The PWM controller then monitors the voltage across the load and uses a feedback loop to adjust the duty cycle of the on/off signal to maintain the desired output voltage or current. The duty cycle of the PWM output can be adjusted by inputting a control voltage into the controller. This allows the output voltage or current to be finely controlled to maintain an exact output product.

Conclusion

In conclusion, SG3524DG4 is a PWM controller belonging to the PMIC, Voltage Regulators and DC DC Switching Controller subcategory. It is an isolated flyback converter PWM controller with an integrated hi-side driver and has multiple features for added protection and control. The main application field for the SG3524DG4 are semiconductor industrial-grade power supplies, cooling systems, lighting systems, motor drivers and others. It works by converting the input voltage to an on-off signal which is used to switch a power transistor, and the duty cycle of the PWM is adjusted to maintain the desired output voltage/current.