SG2524BDW

Series:	*
Packaging:	--
Part Status:	Active
Package / Case:	16-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	16-SOIC
Base Part Number:	SG*524

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SG2524BDW: DC DC Switching Controller Application Field and Working Principle

The SG2524BDW is a high performance DC DC switching controller developed for low-voltage, high-power applications. Specifically designed for an operating temperature range of -40 to +85C, the SG2524BDW is well suited for industrial, medical and transportation applications.The SG2524BDW features a removable 6-pin SOT-23 heatsink and incorporates a 2MHz VCO, ramp signal oscillator, pre-driver and error amplifier blocks. Its internal power dissipation and power switch current limit makes it highly reliable for different control and power requirements.The SG2524BDW integrated with a low power PWM radio frequency signal generator enables improved efficiency, accurate control, fast transient response and lower system noise in the output stages. SG2524BDW is designed to have low quiescent current to meet the power saving requirements of today’s IC applications. In addition to its superior performance, the SG2524BDW also offers a wide range of protection features including short circuit protection, overvoltage protection, thermal warning, brownout protection and overcurrent protection. All these features make it a good choice for applications where reliability and protection are critical.The SG2524BDW is a multifunctional device used in various power conversion applications, such as DC-DC converters, invertors and GTOs. It can be used to control the output voltage, current and frequency of DC power supplies. This combination of features and superior performance make the SG2524BDW a versatile and cost effective choice for high-current power supply applications.Working PrincipleThe SG2524BDW relies on pulse-width modulation (PMW) to control the output voltage and current. PWM is an effective technique to accurately maintain output voltage and current levels with fast transient response. In PMW mode, the SG2524BDW provides a series of pulses with each pulse having a preset pulse width. The pulse width is regulated by an internal ramp signal, which is used to control the switching frequency of the power supply.The ramp signal is used to adjust the duty cycle of the pulse width. When the PWM enable pin is asserted, the pulse width of the output switches between 0% and 100% per cycle depending on the magnitude of the ramp signal. By varying the magnitude of the ramp signal, the SG2524BDW can control the output voltage and current to accurately maintain the prescribed output levels.The SG2524BDW also features a pulse-extender (PE) mode which is used to extend the pulse width of the output. The PE Mode adds an additional 9μs pulse for every pulse that is generated by the VCO. This extra pulse increases the peak current of the applied output switches, which helps to reduce the power dissipation of the output switches.The SG2524BDW also enables a level-shift (LS) mode which is used to maintain the current levels of the output switches. The level-shift mode combined with PWM operation can be used to provide sinusoidal output waveforms, which are commonly used to reduce the amount of power wasted as heat.ConclusionThe SG2524BDW is an innovative DC DC switching controller that is effectively used in applications requiring low power consumption, high power accuracy, and fast transient responses. With wide range of protection features and adjustable pulse widths, the SG2524BDW is a versatile, cost effective solution for high current power supply applications.

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