TLP7820(B,TL,E

Overview

The TLP7820(B,TL,E) is an optically coupled isolation amplifier manufactured by Toshiba Semiconductor and Storage. It utilizes sigma-delta analog-to-digital converter technology to provide high-precision signal isolation. The device features a gain accuracy of ±0.5% for Rank B configurations. It operates with low power consumption, drawing typical currents of 8.6 mA on the primary side and 6.2 mA on the secondary side. The component offers a common-mode transient immunity of 15 kV/µs minimum and supports an insulation voltage of 5000 Vrms. It is housed in an SO8L package suitable for surface mount applications.

Feature Summary

• High gain accuracy with ±0.5% tolerance for Rank B variants
• Low power consumption design for efficient operation
• Robust common-mode noise rejection capabilities
• Sigma-delta conversion technology for precision

Applications

• Motor phase current sensing
• Inverter current sensing
• Voltage sensing in power electronics

Procurement Notes

Verify the specific suffix (B, TL, E) against the manufacturer's datasheet to confirm exact electrical tolerances and packaging details. Confirm availability status as distribution channels may list obsolete or end-of-life stock. Ensure compliance with required safety certifications such as UL or VDE for the intended application environment before procurement.

Selection Notes

Select this component when high-accuracy isolation is required for motor drive systems. The Rank B designation ensures tighter gain accuracy compared to standard variants. Consider the SO8L package dimensions for PCB layout constraints. Verify that the operating temperature range meets the system requirements for industrial or automotive environments.

Part Context

This part belongs to the TLP7820 series of optically coupled isolation amplifiers designed for electronic motor drives. The series addresses the need for high efficiency and precision in industrial control products like AC servo controllers and inverters. It integrates optical isolation with analog signal processing to replace traditional transformer-based solutions.

Replacement Considerations

Consult official Toshiba documentation for qualified substitute part numbers within the TLP7820 family. Verify pin compatibility and electrical specifications before substituting. Generic optocouplers are not direct replacements due to the integrated amplifier functionality.