SI8271DB-ISR

Series:	Automotive, AEC-Q100
Packaging:	Tape & Reel (TR)
Part Status:	Active
Technology:	Capacitive Coupling
Number of Channels:	1
Voltage - Isolation:	2500Vrms
Common Mode Transient Immunity (Min):	150kV/µs
Propagation Delay tpLH / tpHL (Max):	60ns, 60ns
Pulse Width Distortion (Max):	8ns
Rise / Fall Time (Typ):	10.5ns, 13.3ns
Current - Output High, Low:	1.8A, 4A
Current - Peak Output:	4A
Voltage - Forward (Vf) (Typ):	--
Voltage - Supply:	9.6 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

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SI8271DB-ISR Application Field and Working PrincipleThe SI8271DB-ISR is a high-performance isolated gate driver that is commonly used in industrial and automotive applications, such as solenoid or relay control, motor control, motor drives, and motor protection applications. The chip has a wide operating temperature range from -40 °C to +125 °C and is available in a wide variety of package sizes, such as DIP, SOIC, and MPQ packages.The SI8271DB-ISR is designed to operate at a supply voltage of 3.3V to 5.5V and is capable of driving logic level N-channel MOSFETs and IGBTs up to 5A. It also features built-in protection against over-current, over-voltage, thermal shutdown, and reverse battery protection. The device also features Built-check diagnostics, which can detect a short-circuit to ground or between pins, an open circuit, and under-voltage conditions.The SI8271DB-ISR utilizes an isolated topology that provides a low-resistance, high-current path for switching high-current applications in a compact package. It uses a high-performance shielded transformer to provide isolation of up to 2.5kV, which makes it suitable for applications that require electrical isolation between the connected components.The SI8271DB-ISR is a single-channel device that incorporates an integrated driver stage, an integrated level-shifter, and an isolated power supply. The driver stage consists of a driver enabled with logic-level inputs, allowing for direct interfacing with any logic-level microcontroller or other logic-level circuitry.The level-shifter consists of a high and low voltage-level drive circuit that allows a logic-level input voltage range of 3.3V to 5.5V and a drive voltage range of 8V to 16V. This gives the user the flexibility to drive low or high-side MOSFETs or IGBTs.Finally, the integrated isolated power supply is capable of creating a local supply voltage of up to 16V. This supplies the power for the driver circuits and provides isolation between the drive circuits and the logic level input signals.In summary, the SI8271DB-ISR is a high-performance, isolated gate driver IC that is suitable for a wide variety of industrial and automotive applications. It features a wide operating temperature range, high-current drive capability, built-in protection, built-check diagnostics, and an isolated topology. The device also offers easy interface to microcontrollers and has an integrated power supply for isolated power supply applications.

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