SN75452BDRG4

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The SN75452BDRG4 is part of the gate driver family in the suite of PMIC devices. It is a high-voltage, high-speed, low-power, CMOS monolithic IC specially designed for driving high-current power MOSFETs. The SN75452BDRG4 combined with power MOSFETs and capacitors form a high-speed, minimum-component switch-mode power supply for a variety of applications.

Application Field

The SN75452BDRG4 gate driver family provides direct interface for high-frequency switching applications to minimize the size and complexity of the gate drive power supply. Examples of application include

• Switch Mode Power Supplies(SMPS) and High-Power Controllers
• DC to DC Converters
• High-Frequency Switching Circuits
• Battery-powered Equipment
• Motor-drive Circuits
• Power Factor Correction
• Power Management Circuits

The SN75452BDRG4 gate driver provide the necessary high-current drive needed to switch the power MOSFETs in these applications at high-frequencies and thus provide a very compact and efficient solution.

Working Principle

The SN75452BDRG4 is a high-voltage, high-current gate driver for powering power MOSFETs. It works by generating a high-current drive signal to quickly switch the power MOSFETs used in the application. The SN75452BDRG4 can switch from high-to-low to low-to-high in fewer than 10ns.

The SN75452BDRG4 is a low power, CMOS monolithic IC. It is designed to drive the gate of a power MOSFET using the high current source and the low-current source. The low-current source consists of the drain of the N-MOSFET and the source of the P-MOSFET. The high-current source consists of the source of the N-MOSFET and the drain of the P-MOSFET. The voltage of the high-current source is V(NDR). The voltage of the low-current source is V(PDR). The voltage of the drain of the N-MOSFET is V(NDS). The voltage of the source of the P-MOSFET is V(PDS). The SN75452BDRG4 also has an internal voltage-level shifter to generate a high voltage drive signal with a minimum of external components. The output of the SN75452BDRG4 is a high-current source and a low-current source.

The physical layout of the SN75452BDRG4 is optimized to minimize the inductive component of the drive. A low-voltage gate driver is also included. It is used to provide a drive signal to the gate of the power MOSFET. It is combined with the SN75452BDRG4 to provide a minimum component, high-speed, switch-mode power supply.

The SN75452BDRG4 gate driver family provides offers an efficient interface between the logic portion of a digital circuit and the power stage of a power MOSFET. It can be used in applications requiring high-speed switching and low-power consumption. The SN75452BDRG4 has the ability to deliver high current pulses in order to drive the gate of power MOSFETs with very low power consumption.

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