DN-33 Optocoupler Feedback Drive Techniques Using the UC3901 and UC3903

Texas Instruments

Published Date: 09/05/1999

Description

Numerous techniques and devices are available to the designers of optocoupler feedback circuits. The more traditional approaches utilize either an adjustable shunt regulator like the TL431 device or an op-amp and voltage reference as the optocoupler driver. While these approaches do satisfy the basic requirements in many applications, quite often they lack the performance that is achievable from a more sophisticated circuit. Too often, these low cost solutions necessitate additional protection circuitry elsewhere in the control circuit to overcome the deficiencies in the feedback path.

Parts

Part Number Name Companion Part
5962-88697012A 5962-88697012A Buy Datasheet
5962-89441012A 5962-89441012A Buy Datasheet
5962-8944101CA 5962-8944101CA Buy Datasheet
UC1901J UC1901J Buy Datasheet
UC1901J883B UC1901J883B Buy Datasheet
UC1901L UC1901L Buy Datasheet
UC1901L883B UC1901L883B Buy Datasheet
UC1903J UC1903J Buy Datasheet
UC1903J883B UC1903J883B Buy Datasheet
UC1903L UC1903L Buy Datasheet
UC1903L883B UC1903L883B Buy Datasheet
UC2901D UC2901D Buy Datasheet
UC2901DG4 UC2901DG4 Buy Datasheet
UC2901DTR UC2901DTR Buy Datasheet
UC2901DTR/80209 UC2901DTR/80209 Datasheet
UC2901DTR/80209G4 UC2901DTR/80209G4 Datasheet
UC2901J UC2901J Buy Datasheet
UC2901N UC2901N Buy Datasheet
UC2901NG4 UC2901NG4 Buy Datasheet
UC2901Q UC2901Q Buy Datasheet
UC2903DW UC2903DW Buy Datasheet
UC2903DWG4 UC2903DWG4 Buy Datasheet
UC2903DWTR UC2903DWTR Buy Datasheet
UC2903DWTRG4 UC2903DWTRG4 Buy Datasheet
UC2903Q UC2903Q Buy Datasheet
UC3901-W UC3901-W Datasheet
UC3901D UC3901D Buy Datasheet
UC3901DTR UC3901DTR Buy Datasheet
UC3901DTRG4 UC3901DTRG4 Buy Datasheet
UC3901DW UC3901DW Buy Datasheet
UC3901N UC3901N Buy Datasheet
UC3901NG4 UC3901NG4 Buy Datasheet
UC3901Q UC3901Q Buy Datasheet
UC3901QTR UC3901QTR Buy Datasheet
UC3901QTRG3 UC3901QTRG3 Buy Datasheet
UC3903DW UC3903DW Buy Datasheet
UC3903DWG4 UC3903DWG4 Buy Datasheet
UC3903DWTR UC3903DWTR Buy Datasheet
UC3903DWTRG4 UC3903DWTRG4 Buy Datasheet
UC3903Q UC3903Q Buy Datasheet
UC3903QG3 UC3903QG3 Buy Datasheet