Monolithic Power Systems has unveiled the MPM3519, a 36V input, 10A output synchronous step-down power module in a compact 7mm x 7mm 4.4mm LGA package.
This buck module uses zero-delay PWM control for fast transient response, reducing the need for large output capacitors. The wide input-voltage range of 3.3V to 36V makes this module suitable for use with a wide range of power sources, including battery power supplies and 12V or 24V power rails.
The MPM3519 features programmable switching frequency over a range from 200kHz to 2.5MHz, with the ability to synchronize to an external clock. At light loads, the module can enter advanced asynchronous modulation mode, automatically reducing the switching frequency to boost efficiency. A symmetrical input-voltage pinout and optional frequency spread-spectrum modulation help to suppress EMI emissions.
The module integrates protection and flexibility features. An open-drain power-good indicator signals when output is within 94% to 106% of its set voltage. Frequency foldback during start-up prevents inductor current run-away. Thermal shutdown protection ensures reliability under fault conditions.
Up to eight MPM3519 units can operate in parallel in multi-phase, high-current designs.
