19A, 600kHz, 20V Synchronous Boost Converter with Input Disconnect Function
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The MP3428A is a 600kHz, fixed frequency, high-efficiency, wide input range, current-mode boost converter with optional input disconnect and an input average current limit function. The input disconnect feature provides additional protection by isolating the input from the output during output short or shutdown. For battery-operated applications, this feature also helps in preventing battery depletion. With a programmable input average current limit, the MP3428A supports a wide range of applications, including POS, Thunderbolt, Bluetooth Audio, Power Banks, and Fuel Cells. The MP3428A features a 10mΩ, 24V power switch and a synchronous gate driver for high efficiency. An external compensation pin allows flexibility in setting loop dynamics and obtaining optimal transient performance at all conditions.
The MP3428A includes under-voltage lockout, switching current limiting, and thermal shutdown to prevent damage in the event of an output overload.
The MP3428A is available in a low-profile QFN-22 (3mm x 4mm) package.
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Features & Benefits
- 3V to 20V Wide Input Range
- Integrated 10mΩ Low-Side Power FET
- SDR Driver for Synchronous Solution
- 19A Internal Switch Current Limit or External Programmable Input Current Limit
- Input Disconnect and Output SCP
- External Soft Start and Compensation for Higher Flexibility
- Programmable UVLO and Hysteresis
- < 1µA Shutdown Current
- Thermal Shutdown at 150°C
- Available in QFN-22 (3mm x 4mm) Package
Active Part Numbers:
EV3428A-L-00A Evaluation Kit 20V, 19A, 600kHz, Wide-Input, Synchronous Boost Converter Evaluation Board
The EV3428A-L-00A evaluation board is designed to demonstrate the capabilities of the MP3428A, a 600kHz, fixed-frequency, high-efficiency, current-mode boost converter with a wide input voltage (VIN) range. The MP3428A provides optional internal or external current-sensing configurations for highly integrated applications, high-power applications, and excellent protections.
The MP3428A can support 12V/2A loads from a typical 3.3V input. It features an internal 10mΩ, 24V power MOSFET and a synchronous gate driver for high conversion efficiency. The EV3428A-L-00A is configured for 12V applications. The maximum output current (IOUT) is determined by the current limit, temperature range, and VIN.
The MP3428A is available in a QFN-22 (3mmx4mm) package.