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SI8631AB-B-IS
+物料清單DGTL ISOLTR 2.5KV 3CH GP 16-SOIC
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規格
| 屬性 | 價值 |
| Part Status | Active |
| Base Product Number | SI8631 |
| Technology | Capacitive Coupling |
| Type | General Purpose |
| Isolated Power | No |
| Number of Channels | 3 |
| Inputs - Side 1 / Side 2 | 2/1 |
| Channel Type | Unidirectional |
| Voltage - Isolation | 2500Vrms |
| Common Mode Transient Immunity (Min) | 35kV/µs |
| Data Rate | 1Mbps |
| Propagation Delay tp LH / tp HL (Max) | 35ns, 35ns |
| Pulse Width Distortion (Max) | 25ns |
| Rise / Fall Time (Typ) | 2.5ns, 2.5ns |
| Voltage - Supply | 2.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 125°C |
| Mounting Type | Surface Mount |
| Package / Case | 16-SOIC (0.295", 7.50mm Width) |
| Supplier Device Package | 16-SOIC |
| Packaging | Tube |
概述
Description
SI8631AB-B-IS is a Silicon Labs isolated digital I/O device (part of the SI86x/8631 family). It provides galvanic isolation between a logic/input side and a separate output side, allowing a microcontroller or logic signal to control or read from a high‑voltage or noisy domain without a direct electrical connection. The “IS” suffix indicates an industrial/isolated variant and the “B” denotes a specific package/drive option for this channel. It requires separate supplies on both sides (VDD1 and VDD2) and targets TTL/CMOS compatibility on the input/output. Typical uses include isolating pushbuttons or sensors, interfacing microcontrollers to motor drives or high‑voltage circuits, and delivering safety‑critical isolation in control systems. For exact pinout, electrical specs (isolation rating, propagation delay, input/output levels), and environmental range, consult the official SI8631AB datasheet.
Pinout
- Pin count: 8 pins (8-pin package, e.g., SOIC/SO-8)
- Function: Dual-channel digital isolator (iCoupler) providing galvanic isolation between the input side (VDD1/GND1) and the output side (VDD2/GND2) for two unidirectional data channels.
- Function: Dual-channel digital isolator (iCoupler) providing galvanic isolation between the input side (VDD1/GND1) and the output side (VDD2/GND2) for two unidirectional data channels.
Manufacturer
Manufacturer: Silicon Labs (Silicon Laboratories, Inc.).
Type of company: An American fabless semiconductor company that designs and supplies mixed-signal integrated circuits, microcontrollers, wireless connectivity and isolation devices (like the SI8631 family) for IoT, industrial, automotive and consumer applications.
Type of company: An American fabless semiconductor company that designs and supplies mixed-signal integrated circuits, microcontrollers, wireless connectivity and isolation devices (like the SI8631 family) for IoT, industrial, automotive and consumer applications.
Application
SI8631AB-B-IS is a galvanically isolated gate driver. Typical applications include:
- Gate drive for IGBTs/MOSFETs in switch‑mode power supplies and high‑power DC‑DC converters
- Motor control (BLDC, PMSM, stepper) requiring isolated logic‑to‑power interface
- Power inverters in solar, wind, and uninterruptible power supplies
- PFC stages, LLC and flyback/forward converter topologies
- General isolated signal interfaces and level shifting in industrial and automotive power electronics
Note: verify isolation voltage, drive strength, and propagation delay from the datasheet.
- Gate drive for IGBTs/MOSFETs in switch‑mode power supplies and high‑power DC‑DC converters
- Motor control (BLDC, PMSM, stepper) requiring isolated logic‑to‑power interface
- Power inverters in solar, wind, and uninterruptible power supplies
- PFC stages, LLC and flyback/forward converter topologies
- General isolated signal interfaces and level shifting in industrial and automotive power electronics
Note: verify isolation voltage, drive strength, and propagation delay from the datasheet.
Package
An 8-pin surface-mount package: SOIC (SOP-8).
