TLP5774(E

Series:	--
Part Status:	Active
Technology:	Optical Coupling
Number of Channels:	1
Voltage - Isolation:	5000Vrms
Common Mode Transient Immunity (Min):	35kV/µs
Propagation Delay tpLH / tpHL (Max):	150ns, 150ns
Pulse Width Distortion (Max):	50ns
Rise / Fall Time (Typ):	15ns, 8ns
Current - Output High, Low:	1.2A, 1.2A
Current - Peak Output:	4A
Voltage - Forward (Vf) (Typ):	1.65V
Current - DC Forward (If) (Max):	8mA
Voltage - Supply:	10 V ~ 30 V
Operating Temperature:	-40°C ~ 110°C
Approvals:	CQC, cUR, UR, VDE

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Isolators - Gate Drivers

The TLP5774, developed by Toshiba Semiconductor and Storage, is a device specifically designed for driving photo-coupled isolation circuits. It is part of the TOSOP gate driver family, providing a comprehensive line of standard gate drive solutions suitable for a wide variety of applications. This article will provide an overview of the application field and working principle of this device.The TLP5774 is a single-channel, non-inverting gate driver designed specifically for photo-coupled isolation circuits. It features an output transistor with a low on-resistance of 5 Ohms typical, making it suitable for driving wide range of loads. Additionally, the device includes a wide operating voltage range (12V to 48V) and fast rise and fall times of 1µs typical, allowing for high speed operation. It also has an integrated Vref circuit which further facilitates its operation by eliminating the need for an external reference voltage. With regards to the application field of the TLP 5774, it is suitable for a wide variety of gate driving applications such as low-side and high-side gate drive circuits, load switch gate drive circuits, flyback transformer gate drive circuits, and other switching circuits. It can also be used in automotive applications such as body control modules, powertrain control modules, engine control modules, and infotainment systems. The working principle of TLP5774 is based on the concept of photo-coupling. In this circuit, an LED light source is used to transmit a signal from the input side of the circuit to the output side. When the LED is powered, it emits a beam of light, which is sensed by a phototransistor located at the output side and converted into a voltage. This voltage is used to power an output buffer, which in turn supplies the necessary gate drive voltage to the associated gate driver.Additionally, the TLP5774 incorporates a built-in PWM generator circuit which provides an adjustable output frequency and duty cycle. This allows for the subsequent switching frequency to be adjusted over a wide range, which is essential for applications that require both high and low switching frequencies.In conclusion, the TLP5774 is a single-channel, non-inverting gate driver designed specifically for photo-coupled isolation circuits. Due to its wide operating voltage range, fast switching times, and adjustable output frequency and duty cycle, the TLP5774 is suitable for a variety of gate driving applications such as low-side and high-side gate drive circuits, load switch gate drive circuits, flyback transformer gate drive circuits, and other switching circuits.

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