L6983I: 38 V 10 W synchronous iso-buck converter for isolated applications
Specifically designed for isolated buck topology, the L6983I’s primary output voltage can be accurately adjusted, while the isolated secondary output is derived by using a given transformer ratio.
The switching frequency can be programmed in the 200 kHz - 1 MHz range with optional spread spectrum for improved EMC. The Enable (EN) pin provides enable/disable functions and includes an internal voltage divider.
Key features
- 3.5 to 38V operating input voltage
- Primary output voltage regulation / no optocoupler required
- 200 kHz to 1 MHz programmable switching frequency.
- Stable with low ESR capacitor (min. 2 µF)
- Internal compensation network
- 2 µA shutdown current
- Internal soft-start
- Overvoltage protection
- Output voltage sequencing
Application examples
Isolated IGBT/SiC MOSFET gate drive supply 
OBC (On-board charger) for HEV/EV 
Electric traction systems 
Charging stations Recommended resources
STEVAL-L6983IV1 evaluation board
Based on the L6983I, a 38 V, 10 W synchronous iso-buck converter designed for isolated applications.
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Switching Converters (DC-DC) Quick reference guide
This guide provides developers with an overview of our most commonly used switching regulators and will help identify the most appropriate solution for each type of application.
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