Analog Devices Inc. LT8301 / LT8302 Isolated Flyback Converters
Analog Devices Inc. LT8301 / LT8302 Isolated Flyback Converters sample the isolated output voltage directly from the primary-side flyback waveform. The LT8301 / LT8302 from Analog Devices requires no third winding or opto-isolator for regulation. The output voltage is programmed with a single external resistor. Internal compensation and soft-start further reduce external component count. Boundary mode operation provides a small magnetic solution with excellent load regulation. Low ripple burst mode operation maintains high efficiency at light load while minimizing the output voltage ripple.
Features
- 2.8V to 42V input voltage range
- Low ripple Burst Mode® operation at light load
- Minimum load < 0.5% (typ) of full output
- No transformer third winding or opto-isolator
- Required for output voltage regulation
- Accurate EN/UVLO threshold and hysteresis
- Internal compensation and soft-start
- Temperature compensation for output diode
- Output short-circuit protection
- Package Options
- SOT-5
- SO-8
Applications
- Isolated automotive
- Industrial power supplies
- Medical power supplies
- Isolated auxiliary
- Housekeeping power supplies
Additional Resources
LT8301 Block Diagram
LT8302 Block Diagram
LT8301 Typical Application Circuit
LT8302 Typical Application Circuit
Development Tools
Analog Devices Inc. DC2737A DemoCircuit for LT8301 Flyback Converter
Isolated flyback converter featuring the LT8301.
Analog Devices Inc. Placa de demostración DC2014A, DC2821A y DC2906A para el LT8302
Placas de evaluación que incluyen circuitos de demostración basados en el convertidor Flyback aislado LT8302.
Publicado: 2017-05-25
| Actualizado: 2022-04-14