TLP7820(D4B,TL,E

Overview

The TLP7820(D4B,TL,E) is an optically isolated amplifier manufactured by Toshiba Semiconductor and Storage. It integrates a sigma-delta analog-to-digital converter to provide high-precision isolation for analog signals. The device features a gain rank of B with an accuracy of ±0.5%. It operates on a single supply voltage ranging from 3 V to 5.5 V. Key electrical parameters include a bandwidth of 230 kHz, a common-mode rejection ratio of 80 dB, and an input offset voltage of 900 µV. The component provides an insulation voltage of 5000 Vrms and supports a wide operating temperature range from -40°C to +105°C.

Feature Summary

• Integrates sigma-delta ADC technology for high-accuracy signal transmission across isolation barriers
• Provides robust common-mode noise suppression with a minimum rating of 15 kV/µs
• Features low power consumption with typical primary side current of 8.6 mA and secondary side current of 6.2 mA
• Utilizes a thin SO8L package design to facilitate flexible printed circuit board layout

Applications

• Motor phase and rail current sensing in electronic motor drives
• Power inverter current and voltage sensing for industrial control systems
• High-precision current and voltage sensing blocks in renewable energy power conditioners

Procurement Notes

Verify the specific suffix codes (D4B, TL, E) against official Toshiba documentation to confirm exact gain ranking, packaging type, and compliance status. Ensure the selected variant matches the required gain accuracy and thermal specifications for the target application environment before finalizing procurement orders.

Selection Notes

Select this component when high-precision analog isolation is required for motor drive or inverter applications. The integrated sigma-delta architecture eliminates the need for external precision components. Consider the 230 kHz bandwidth and 80 dB CMRR for dynamic signal environments. Verify that the 5000 Vrms insulation rating meets safety standards for the specific system voltage levels.

Part Context

This part belongs to the TLP7820 series of optically coupled isolation amplifiers designed for industrial and automotive applications. The series utilizes advanced sigma-delta conversion to achieve high linearity and stability. It serves as a critical interface between low-voltage control circuits and high-voltage power stages, ensuring signal integrity and operator safety.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.