LTC7825

Demonstration circuit DC2993A-B is a dual-phase, high efficiency, high density, open loop charge pump (inductorless) DC/DC converter. This demo board is a voltage divider whose input voltage range is 4.5V to 24V. The output voltage is a fixed ratio of half the input voltage (V_IN/2) and can supply 24A of load current. The DC2993A-B provides a highly efficient solution of 96.5% at full load, running at 380kHz.

This demo board features two LTC7825, a fully integrated 24V/12A switched capacitor DC/DC converter with overvoltage and overcurrent protections in a 4mm × 5mm QFN package. Refer to the LTC7825 data sheet for more detailed information.

The DC2993A-B requires no load current start-up. Load current can be applied after V_OUT is established. Refer to the “Voltage Divider Pre-Balance Before Switching” section in the LTC7825 data sheet for more details regarding the start-up of the voltage divider. This board offers an input disconnect MOSFET controlled by LTC7825 OVG pin to provide overvoltage protection to the power stage when V_IN is higher than 24V. The board also features some protection functions, such as overcurrent and thermal shutdown, making it a reliable solution.

NOTE: For the single-phase operation feature, refer to the DC2993A-A demo manual.

Demonstration circuit DC2993A-A is a high efficiency, high density, open loop charge pump (inductorless) DC/DC converter. This demo board is a voltage divider whose input voltage range is 4.5V to 24V. The output voltage is a fixed ratio of half the input voltage (V_IN/2) and can supply 12A of load current. The DC2993A-A provides a highly efficient solution of 96.6% at full load, running at 380kHz.

This demo board features the LTC7825, a fully integrated 24V/12A switched capacitor DC/DC converter with overvoltage and overcurrent protections in a 4mm × 5mm QFN package. Refer to the LTC7825 data sheet for more detailed information.

The DC2993A-A requires no load start-up. Load current can be applied after V_OUT is established. Refer to the “Voltage Divider Pre-Balance Before Switching” section in the LTC7825 data sheet for more details regarding the start-up of the voltage divider. The board offers an input disconnect MOSFET controlled by LTC7825 OVG pin to provide overvoltage protection to the power stage when V_IN is higher than 24V. The board also features some protection functions, such as overcurrent and thermal shutdown, making it a reliable solution.

For dual-phase operation, refer to the DC2993A-B demo manual.