SI9120DY-Universal Input Switch Mode Controller, safe payment method, fast delivery and favorable price.
SI9120DY product description
1. Wide input voltage range: from 8.5 V to 450 V, which can adapt to different power supply conditions.
2. Output voltage range: from 2.5 V to 40 V, which can meet different load requirements.
3. Built-in starting circuit: No external components are required, and low-power self-starting can be achieved.
4. Built-in oscillator: The frequency can be adjusted through external resistors and capacitors, up to 1 MHz.
5. Using current mode control: can achieve fast transient response and good line and load regulation.
6. Provide two logic input terminals SHUTDOWN and RESET: switch control and fault protection can be realized.
7. Strong output driving capability: can drive 125mA output current, suitable for high-speed switching MOSFET.
SI9120DY product application
1. Low-power offline flyback converter: SI9120DY can directly obtain voltage from the AC power supply through the built-in high-voltage DMOS input, and realize the switching control of the flyback converter through the output drive MOSFET. The flyback converter has the advantages of simple structure, low cost, and good isolation, and is suitable for low-power offline power supply applications.
2. Adjustable offline forward converter: SI9120DY can obtain voltage from the AC power supply through an external voltage divider resistor, and realize switching control of the forward converter through the output driver MOSFET. The forward converter has the advantages of high efficiency and adjustable output voltage, and is suitable for medium and high power offline power supply applications.
3. Universal input buck converter: SI9120DY can obtain voltage from a wide range of DC input through a built-in or external starting circuit, and realize switching control of the buck converter through the output driver MOSFET. The buck converter has the advantages of high conversion ratio and small output ripple, and is suitable for various DC input buck power supply applications.