Typical application circuit and parameters of TLP52l-4(GB)

Photocoupler

Typical application circuit and parameters of TLP52l-4(GB)

The optical isolation module TLP521-4 (GB) is a fixed-time optocoupler with excellent base-emitter performance, which has the characteristics of optimal conversion speed and high temperature performance. The main characteristics of the device: current conversion rate is 100% ~ 500%; isolation voltage is 2500Vrms (min); emission a receiving voltage is 55V (min); leakage current is lOμA (max) (Ta = 85 ° C); minimum conversion time It is 42μs.

The typical circuit of TLP52l-4 (GB) is shown in Figure 1. The specific conversion time parameters are shown in Table 1. It can be seen from Table 1 that the maximum transmission delay time of TLP521_4 (GB) is 42μs, the system needs to complete 8 bytes of reading or writing in 1ms, and the maximum transmission delay time has met the level of circuit transmission delay time, so it is completely complete in transmission speed. Can meet the requirements of long-distance transmission. By controlling its input, the optocoupler can be turned on or off as needed. When a high level is applied to the input control terminal, the optocoupler operates normally. The input signal is coupled to the output terminal, and when the input control terminal is applied with a low level, the output open collector transistor of the output terminal is turned off, and the external high impedance state is obtained.