Micrel's MIC28303 power supply modules, available through Mouser Electronics, combine a DC/DC driver, power MOSFET, bootstrap diode, bootstrap capacitor, and inductor, all in a single package. The MIC28303 modules feature a supply voltage range of 4.5V to 50V, with an adjustable output voltage between 0.9V and 24V (duty cycle limited). The modules can deliver up to 3A of output current and are adjustable from 0.8V with a guaranteed accuracy of ±1%. The conduction-time control architecture allows for a constant and programmable switching frequency between 200kHz and 600kHz.
The MIC28303-1 module utilizes Micrel's HyperLight Load architecture to improve efficiency with small loads. The MIC28303-2 module utilizes Micrel's Hyper Speed Control for ultra-fast transient response. Both modules offer a full suite of protection features, including undervoltage lockout, internal soft start, reverse current limiting, hiccup short-circuit protection, and thermal shutdown. Micrel
's MIC28303 buck-regulated DC/DC converters are characterized by low radiation emissions, correct supply signal, and a junction temperature range of -40°C to +125°C, making them ideal for industrial and medical applications.
