The DC1722A is a demonstration circuit for LTC3864EMSE DC to DC converter. The LTC3864EMSE is a robust, high voltage step down DC to DC controller which drives a P channel power MOSFET switch allowing 100% duty cycle operation. The board operates from an input range of 3.5V to 55V and provides a 5V, 2A output when the input exceeds 5V. The PMOSFET architecture allows it to operate seamlessly up to 100% duty cycle and function as a saturated switch below the regulation threshold down to 3.5VIN. It operates at 350KHz and may be synchronized to an external clock. A soft start feature controls output voltage slew rate at start up, reducing current surge and voltage overshoot. Burst mode operation that improves efficiency at light loads can be enabled with a jumper. The demonstration board has options for larger MOSFET and diode packages on the back of the board for higher output current requirements.
- 84% efficiency
- Strong high voltage MOSFET gate driver
- Constant frequency current mode architecture
- Verified FMEA for adjacent pin open/short
- Selectable high efficiency burst mode operation or pulse skipping mode at light loads
- Accurate current limit
- Programmable soft start or voltage tracking
- Internal soft start guarantees smooth start up
- Power good output voltage monitor
- Low shutdown of 7μA
电源管理, 车用, 通信与网络, 工业