Texas Instruments UC1843B | Demoboard UC1843BEVM-CVAL

Beschreibung

The UC1843B-SP EVM uses the UC1843B-SP, INA901-SP, LM139AQML-SP, and UC1901-SP to create an isolated feedback flyback with current sensing and overcurrent flags. The UC1843B-SP is used to switch the low side MOSFET of the flyback converter and provides voltage and current to the output. The system uses the UC1843B-SP to provide 5-V and 10-A outputs. These outputs are not dependent on the UC1843B-SP itself, and can be increased or decreased depending on the design. The INA901-SP senses the input current which is then provided to the LM139AQML-SP to create an overcurrent flag. In a full system, this flag could be used to shutdown the UC1843B-SP and turn off the converter.

Eigenschaften

• Pulse-by-pulse current limiting using UC1843B-SP
• PWM control using UC1843B-SP
• Current sensing using INA901-SP
• Overcurrent comparison using LM139AQML-SP

Typische Anwendungen

• Radiation hardened applications
• Space satellite isolated power supplies, Space satellite payloads

Weiterführende Informationen

• Datenblatt