DC1757B is a high efficiency synchronous buck-boost DC/DC converter with a 6V to 36V input voltage range. It can supply a 12A maximum load current with a 12V output. The demo board features the LTC®3789EGN controller. The constant frequency current mode architecture allows a phase-lockable frequency of up to 600kHz, while an optional output current feedback loop provides support for applications such as battery charging. With a wide input range, wide output range and seamless transfers between operation modes, the LTC3789 is ideal for automotive, telecom, distributed DC power systems and battery-powered applications.
The DC1757B is a demonstration board featuring the LTC3789EGN controller, designed to evaluate a high-efficiency synchronous buck-boost DC/DC converter. It supports an input voltage range of 6V to 36V and can supply a maximum output current of 12A at 12V. The board utilizes a constant frequency current mode architecture with a pre-set switching frequency of approximately 200kHz.
| Input Voltage Range | 6V to 36V |
|---|---|
| Output Voltage | 12V ±2% |
| Maximum Output Current | 12A |
| Typical Efficiency | 97.9% |
| Typical Switching Frequency | 200kHz |
To shut down the converter, force the RUN pin below 1.2V.
The power good output is low when the output voltage is outside of the ±10% regulation window.
Use JP2 jumper to select pulse-skipping mode or forced continuous mode (CCM) operation.