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4A High-Speed Low-Side Gate Driver(TPS2828)

2017-08-05 13:18  
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This article describes the 4A High-Speed Low-Side Gate Driver (TPS2828). The principle is very simple, very practical. The circuit components can help you understand better grasp this principle. For example, in this circuit, you can go to find and buy these components: TPS2828.

The UCC27518 and UCC27519 single-channel, high-speed, low-side gate driver device is capable of effectively drivingMOSFETandIGBTpower switches. Using a design that inherently minimizes shoot-through current, UCC27518 and UCC27519 are capable of sourcing and sinking high, peak-current pulses into capacitive loads offering rail-to-rail drive capability and extremely small propagation delay typically 17 ns.

The UCC27518 and UCC27519 provide 4-A source, 4-A sink (symmetrical drive) peak-drive current capability atVDD= 12 V. The UCC27518 and UCC27519 are designed to operate over a wideVDDrange of 4.5 V to 18 V and wide temperature range of -40°C to 140°C. Internal Under Voltage Lockout (UVLO) circuitry onVDDpin holds output low outsideVDDoperating range.

Figure:1 Circuit diagram

Figure 1 Circuit diagram

Features

Low-Cost, Gate-Driver Device Offering Superior Replacement ofNPNandPNPDiscrete SolutionsPin-to-Pin Compatible With TI’s TPS2828 and the TPS28294-A Peak Source and 4-A Peak Sink Symmetrical DriveFast Propagation Delays (17-ns typical)Fast Rise and Fall Times (8-ns and 7-ns typical)4.5-V to 18-V Single Supply RangeOutputs Held Low DuringVDDUVLO(ensures glitch free operation at power-up and power-down)CMOSInput Logic Threshold (function of supply voltage with hysteresis)Hysteretic Logic Thresholds for High Noise ImmunityEN Pin for Enable Function (allowed to be no connect)Output Held Low when Input Pins are FloatingInput Pin Absolute Maximum Voltage Levels Not Restricted byVDDPin Bias Supply VoltageOperating Temperature Range of -40°C to 140°C5-PinDBVPackage (SOT-23)

Device Uses

Switch-Mode Power SuppliesDC-to-DC ConvertersCompanion Gate Driver Devices for Digital Power ControllersSolar Power, Motor Control,UPSGate Driver for Emerging Wide Band-Gap Power Devices (such as GaN) 

 


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