SMD TLP250 OPTOCOUPLER MOSFET DRIVER
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TLP250 SMD (Surface Mount Device) version, which is an extremely common, high-speed gate driver optocoupler.
This component is crucial for isolating the low-voltage control circuitry from the high-voltage power stage in MOSFET and IGBT driver applications.
TLP250 (SMD) Gate Driver Optocoupler Specification
Core Function and Features
Parameter | Detail | Notes |
Function | High-speed, high-current Isolated Gate Driver | Drives power MOSFETs and IGBTs directly. |
Isolation Voltage ($V_{ISO}$) | $\mathbf{2500 V_{RMS}}$ (Min) | Provides galvanic isolation between input and output. |
Input | GaAlAs Infrared LED | Driven by control signal (e.g., from a microcontroller). |
Output | High-speed Photodetector & Driver Circuit | Totem-pole output structure for high sink/source current. |
Package | SO6L, SO8L (Surface Mount) | Check datasheet for specific lead/pitch dimensions. |
Key Electrical Parameters
Parameter | Value | Unit | Condition |
Supply Voltage ($V_{CC}$) | 10 to 35 | V | Power supply for the output stage. |
Peak Output Current ($I_{OP}$) | $\pm \mathbf{1.5}$ | A | Instantaneous current for fast switching (turning MOSFET ON/OFF). |
Propagation Delay ($t_{PHL}, t_{PLH}$) | Max 500 | ns | High-speed response for fast switching applications. |
Input Threshold Current ($\mathbf{I_{FT}}$) | Max 7.5 | mA | Minimum LED current required to activate the output. |
Common Mode Transient Immunity ($CM_{L}, CM_{H}$) | $\mathbf{\pm 10}$ | kV/$\mu$s (Min) | Rejects noise/interference across the isolation barrier. |
Typical Applications
· IGBT/MOSFET Gate Drive: Providing isolated signal for power semiconductors.
· Induction Cooktop/HVAC Inverters: Used in motor control and power conversion.
· Switching Power Supplies (SMPS): Providing isolated feedback or control signals in high-voltage converters.