Synchronous boost controller for wide-input industrial rails
The Texas Instruments TPS43061RTER is a current-mode synchronous boost controller that drives an external N-channel MOSFET to generate a regulated positive output from a lower input voltage. It accepts a supply range of 4.5V to 38V, making it suitable for 5V, 12V, and 24V bus architectures common in industrial power supplies, motor drives, and telecom equipment. The switching frequency is programmable from 50kHz to 1MHz, allowing the designer to trade off inductor size against switching losses.
Junction temperature rating and thermal design margin
The 150°C TJ ceiling provides headroom for designs where the controller sits near hot components or in enclosed enclosures with limited airflow.
Synchronous rectification and control features
Synchronous rectification is built in, which replaces the usual boost diode with a second N-channel MOSFET for higher efficiency at moderate to heavy loads. The controller includes Enable, Frequency Control, Power Good, and Soft Start. The single output is configured for positive voltage. There is no clock synchronization input — the oscillator runs free at the resistor-set frequency.