UCC27524DGN

Logic Voltage - VIL, VIH:	1V, 2.3V
Base Part Number:	UCC27524
Supplier Device Package:	8-MSOP-PowerPad
Package / Case:	8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 140°C (TJ)
Rise / Fall Time (Typ):	7ns, 6ns
Input Type:	Non-Inverting
Current - Peak Output (Source, Sink):	5A, 5A
Series:	--
Voltage - Supply:	4.5 V ~ 18 V
Gate Type:	IGBT, N-Channel MOSFET
Number of Drivers:	2
Channel Type:	Independent
Driven Configuration:	Low-Side
Part Status:	Active
Packaging:	Tube

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Introduction

UCC27524DGN is a Quad low side gate driver. It is an integrated device with two N-channel MOSFET outputs in a low-side configuration, and it is largely used in PMIC - Gate Drivers applications due to its high efficiency, cost-effectiveness, and improved power performance.

Application Fields of UCC27524DGN

UCC27524DGN drivers are used in a wide range of different PMIC - Gate Drivers applications, such as the following:

• Power supply systems
• Power converters
• DC-DC converters
• AC-DC converters
• Digital signal processors
• Motor control
• Telecommunication systems
• Industrial automation systems

UCC27524DGN drivers are also used extensively in other areas where they can provide efficient and cost-effective power performance.

Features of UCC27524DGN

UCC27524DGN drivers have several important features that make them an attractive choice for a variety of PMIC - Gate Driver applications. These features include:

• Low power dissipation and high power performance.
• Four independent low side gate drivers with separate protected switches.
• Output delay time and slew rate selectable with external capacitors.
• Open-drain outputs for true NOR operation.
• Low input voltage levels.
• Adjustable output current limit.
• High levels of EMI protection.

Working Principle of UCC27524DGN

UCC27524DGN is a Quad low side gate driver, also referred to as a “gate driver”. It is used to control the voltage and current of the power MOSFET. The gate driver’s purpose is to reduce the on-resistance of the power MOSFETs and increase their switching frequency. It is, in essence, a voltage amplifier, which amplifies the signal given to it by its inputs and applies it to the gates of the power MOSFETs. The working principle of the UCC27524DGN is as follows: when a voltage is applied to the input of one of the four channels, the internal control circuit instantaneously switches it to an output voltage based on the voltage levels given. This output voltage will be amplified, depending on the size of the external capacitor connected to the gates of the power MOSFETs. The outputs of the four channels are then connected to the gates of the power MOSFETs. When the output voltage of the gate driver reaches the gate voltage threshold of the power MOSFET, the power MOSFET will start conducting. The UCC27524DGN also features an adjustable current limit control, which can be used to limit the current in the power MOSFET. This is important for preventing damage to the power MOSFETs due to excessive current. Finally, the UCC27524DGN also features an adjustable slew rate control, which can be used to reduce the turn-on and turn-off times of the power MOSFETs. This can improve the efficiency of the power supply system and reduce the amount of EMI generated.

Conclusion

UCC27524DGN is a Quad low side gate driver that is largely used for PMIC - Gate Drivers applications due to its high efficiency, low power dissipation, adjustable current limit and slew rate control, and excellent EMI protection. Its working principle is to amplify the given signals and apply them to the gates of the power MOSFETs, so that they can conduct current when the output voltage reaches the gate voltage threshold. Overall, UCC27524DGN is an excellent choice for PMIC - Gate Drivers applications.

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