SI8237BB-D-IS1R

Rise / Fall Time (Typ):	20ns, 20ns (Max)
Approvals:	CQC, CSA, UR, VDE
Supplier Device Package:	16-SOIC
Package / Case:	16-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Voltage - Supply:	9.4 V ~ 24 V
Voltage - Forward (Vf) (Typ):	--
Current - Peak Output:	500mA
Current - Output High, Low:	250mA, 500mA
Series:	Automotive, AEC-Q100
Pulse Width Distortion (Max):	5.6ns
Propagation Delay tpLH / tpHL (Max):	60ns, 60ns
Common Mode Transient Immunity (Min):	20kV/µs
Voltage - Isolation:	2500Vrms
Number of Channels:	2
Technology:	Capacitive Coupling
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Isolators - Gate Drivers

Isolators are electrical components that allow electrical signals to be transferred between circuits with different electrical potentials while still keeping the different circuits isolated. Gate Drivers are components that control and regulate the current going through a gate, where the gate acts as an electronic switch. Thus, a Gate Driver can be thought of as a medium between the electrical circuit itself and the gate.The SI8237BB-D-IS1R is an isolator and gate driver combination developed by Silicon Labs for a variety of industrial applications. It is an optically coupled isolator composed of an infrared emitting diode combined with a wave-shaping inrush current limiting circuit. The SI8237BB-D-IS1R provides isolation up to 1.5kV, and gate drive capabilities of 4A. It is available in an 8-pin DIP package and is RoHS-compliant.The SI8237BB-D-IS1R’s main applications are in industrial motor control circuits, switch mode power supplies, power converters and High-Voltage devices. It is especially suited for hermetic and sealed motor control applications because of its compact size and its capability for precise switching of high-current loads. Additionally, the SI8237BB-D-IS1R allows for bidirectional motor control, allowing for forward, reverse and stop motor control.The SI8237BB-D-IS1R isolator and gate driver combination works as follows. The input signal, typically an isolated logic signal from a controller or processor, is sent through an LED emitting diode. This diode, when fully conducting, energizes the multi-winding transformer which provides the proper isolation level. This energy is then sent to the receiver circuit, which is responsible for amplifying, shaping, and switching the signal. From here, the four outputs drive the gate more precisely to regulate and control the current flow. The SI8237BB-D-IS1R is an ideal solution in applications where high current switching and a fully isolated signal is needed. Its design is especially suitable for industrial motor control circuits, switch mode power supplies, power converters, and high voltage devices, and its feature of bidirectional motor control makes it even more appropriate for applications that require precise control of forward, reverse, and stop signals. Additionally, its compact size and RoHS-compliant design make it a perfect option for hermetic and sealed motor control applications.

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