SI8261BAD-C-ISR Isolators

Current - Output High, Low:	500mA, 1.2A
Approvals:	CQC, CSA, UR, VDE
Supplier Device Package:	6-SDIP
Package / Case:	6-SOIC (0.295", 7.50mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Voltage - Supply:	6.5 V ~ 30 V
Current - DC Forward (If) (Max):	30mA
Voltage - Forward (Vf) (Typ):	2.8V (Max)
Current - Peak Output:	4A
Series:	Automotive, AEC-Q100
Rise / Fall Time (Typ):	5.5ns, 8.5ns
Pulse Width Distortion (Max):	28ns
Propagation Delay tpLH / tpHL (Max):	60ns, 50ns
Common Mode Transient Immunity (Min):	35kV/µs
Voltage - Isolation:	5000Vrms
Number of Channels:	1
Technology:	Capacitive Coupling
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

The SI8261BAD-C-ISR is a gate driver isolator from Silicon Labs, dedicated to the powering and control of AC and DC loads. This device is part of the Isolators – Gate Drivers category and features wide input voltage range, fast switching speed and a high-quality level of isolation. This article elaborates upon the application fields of the SI8261BAD-C-ISR and its working principles.

Application Fields

The SI8261BAD-C-ISR is a widely used component in a variety of applications, ranging from industrial control to automotive and consumer electronic products. As a gate driver with isolation, this device is employed for gate control and power delivery from either an isolated AC-DC or DC-DC source.In industrial applications, the SI8261BAD-C-ISR is used for powering and controlling switches, such as insulation fault and power switches. It is well-suited for use in industrial automation systems that require high operating voltage, as it can handle up to 860VAC. The ability to isolate the load from the power source is advantageous in an industrial setting, as it eliminates the need for multiple power sources.In automotive, the SI8261BAD-C-ISR is used in driving circuitry for a variety of applications, such as powertrain and safety system control. The device is used for powering and controlling the solenoid actuators that are used for throttle control and airbag deployment. By providing a high-speed switch signal with enough voltage to drive the actuators, the SI8261BAD-C-ISR offers an efficient way to control these systems.In consumer electronics, the SI8261BAD-C-ISR is used for powering and controlling a range of devices including LCD TVs, DVD players and audio equipment. The device can be used to power and control the high voltage switches used in these devices. Its wide input voltage range and high isolation capabilities make it a suitable choice for powering and controlling these devices.

Working Principle

The SI8261BAD-C-ISR is based on a gate driver topology which offers salient features such as high-speed switching and high-quality isolation. The device’s power outputs are isolated from its control signals, allowing it to safely power multiple loads with a single input source. It has two independent power outputs which can handle up to 860VAC with a maximum peak current of 2A. The device also incorporates built-in EMI filtering to reduce the risk of device failure due to external noise.The device also utilizes an integrated power driver circuit which provides high-speed switching. This helps to drive large loads with minimal switching losses. The integrated protection circuits provide fault protection by monitoring the over-temperature, over-voltage and under-voltage conditions of the input and output supplies.The SI8261BAD-C-ISR also offers a host of control features to simplify its use. These include configuration options such as soft-start, enable/disable control, over-temperature protection and output inversion control.

Conclusion

The SI8261BAD-C-ISR is an ideal gate driver isolator choice for AC and DC loads across a range of applications. With its wide input voltage range, high-speed switching and integrated protection features, the device offers an efficient and reliable method for powering and controlling the loads. Its isolation characteristics provide a level of safety which makes it suitable for use in difficult and hazardous operating conditions.

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