SI8261BAC-C-IS

Technology:	Capacitive Coupling
Number of Channels:	1
Voltage - Isolation:	3750Vrms
Common Mode Transient Immunity (Min):	35kV/µs
Propagation Delay tpLH / tpHL (Max):	60ns, 50ns
Pulse Width Distortion (Max):	28ns
Rise / Fall Time (Typ):	5.5ns, 8.5ns
Current - Output High, Low:	500mA, 1.2A
Current - Peak Output:	4A
Voltage - Forward (Vf) (Typ):	2.8V (Max)
Current - DC Forward (If) (Max):	30mA
Voltage - Supply:	6.5 V ~ 30 V
Operating Temperature:	-40°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	8-SOIC
Approvals:	CQC, CSA, UR, VDE
Series:	Automotive, AEC-Q100
Packaging:	Tube
Part Status:	Active

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SI8261BAC-C-IS Isolators - Gate Drivers

The SI8261BAC-C-IS is a device of Isolators - Gate Drivers. This device is ideal for protecting the inputs of high-speed microcontrollers and digital signal processors at high-speed gates with high voltages. It is compliant to the latest industrial standards and is built using advanced process technology to ensure that the device is suitable for industrial applications such as power system control, medical and industrial automation, and communications.

Overview

The SI8261BAC-C-IS is an intelligent digitally controlled isolator optimized for gate-driver applications. With minimal external components, the device facilitates two independent high-voltage supply paths. The gate driver part of the device has a wide operating range of the input voltage of 3.5 to 13.2 V, allowing it to be used with both single-level and dual-level inputs. It has a wide operating temperature range of -40 to 85°C and is capable of handling high-frequency switching speeds up to 12 MHz.

Typical Application of SI8261BAC-C-IS

The SI8261BAC-C-IS can be used in variety of applications to provide the gate-driver signals with high isolation levels and robust performance over temperature, voltage, and time. The device is designed for efficient interfacing and control between the gate-driver and microprocessor-based systems. The device can be used for controlling the power switches in motor control applications such as brushless dc motor controller (BLDC), stepper motor control (SM), and energy-efficient AC motor control (ECM). It can also be used in power electronics-based applications such as regulated switching DC-DC converters, solar power controllers, AC-DC and DC-AC inverters.

Working Principle of SI8261BAC-C-IS

The SI8261BAC-C-IS isolator works on the principle of dynamic voltage isolation, which is based on the fact that when the input is supplied with a low voltage level, the isolator turns on and the output voltage rises to the desired level. A dual-level input signal applied to the input will cause the device to perform as either a digital isolator or a static level-shifter, depending on the level of the signal that is applied. The device has both an ON and an OFF state that determines the level of the output voltage. When the input voltage is low, the device is in the OFF state, causing the output voltage to rise to the desired high voltage level. When the input voltage is high, the device is in the ON state, causing the output voltage to drop to the desired low voltage level.In addition to its isolation and level-shifting capabilities, the SI8261BAC-C-IS also provides thermal and short circuit protection. The device\'s thermal protection ensures that the device will not suffer permanent damage due to excessive temperature. The short-circuit protection helps to protect the device from being damaged due to unintentional short-circuiting of the output.

Conclusion

The SI8261BAC-C-IS is ideal for protecting the inputs of high-speed microcontrollers and digital signal processors at high-speed gates with high voltages and offers excellent performance over temperature, voltage, and time. By providing thermal and short-circuit protection, the device ensures that the output will not suffer from permanent damage and it is compliant to the latest industrial standards. The device has a wide operating range of input voltages and a wide operating temperature range of -40 to 85°C, making it suitable for a wide range of industrial applications such as power system control, medical and industrial automation, and communications.

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