ROHM Semiconductor BD7F100/200 Isolated Flyback Converters
ROHM Semiconductor BD7F100 and BD7F200 Isolated Flyback Converters are optocoupler-less converters featuring a small size and high reliability. ROHM BD7F100 and BD7F200 converters allow for the output voltage to be set by two external resistors and the transformer turn ratio, eliminating the need for an optocoupler or a transformer tertiary winding.
The BD7F100 and BD7F200 flyback converters use original adapted Type ON-Time control technology for high-speed load response that renders external phase compensation parts unnecessary. ROHM Semiconductor BD7F100 and BD7F200 converters are designed for industrial equipment isolated power supply applications.
Features
- High-speed load response achieved through adaptive on-time control
- Automatic light load mode enables high efficiency throughout the entire load range
- Eliminates the need for parts that cross the isolation boundary, improving safety
- Limited-life components such as optocouplers are not required enabling longer-term operation
- Supports multi-output configuration for superior cross-regulation
- Includes 2 models offered in 2 different package types.
Applications
- Industrial equipment
- Industrial isolated power supplies
Specifications
- Supply voltage of operation:
- 3V to 40V (BD7F100)
- 8V to 40V (BD7F200)
- Over current limit:
- 1.25A (typ.) (BD7F100)
- 2.75A (typ.) (BD7F200)
- 50V (max) SW terminal operating voltage
- 400kHz (typ.) switching frequency
- ±1.5% (typ.) reference voltage accuracy
- 0µA (typ.) quiescent current
- 2mA (typ.) operating current
- -40°C to +125°C junction temperature of operation
Associated Product
ROHM Semiconductor BD7F100HFN Evaluation Board
Evaluates BD7F100HFN flyback converters and operates at a 400kHz frequency.
Videos
Application Circuit
Flyback method
Conventional vs. new
Adaptive On Time Control
Eval Board
ROHM Semiconductor BD7F100HFN Evaluation Board
Evaluates BD7F100HFN flyback converters and operates at a 400kHz frequency.
Published: 2016-06-29
| Updated: 2023-06-29