Maxim Integrated Products introduces the MAX15034, a dual-output, synchronous step-down controller capable of driving external MOSFETs to deliver two 25A outputs or a single 50A output. Additionally, the device can operate from a 4.5V to 5.5V or 5.5V to 28V input range, allowing it to be used in both 5V- and 12V-bus applications. Optimized for designs requiring a high output current, this device is dedicated to computing, telecom, networking, storage, and server equipment. The chip offers programming features to maximize flexibility. Programmable features include output voltage (0.6V to 5.5V), switching frequency (100kHz to 1MHz), current-limit threshold, and the external compensation network.

To maximize space and cost savings, the device employs an average current-mode scheme that provides current-limit and current-sharing accuracy of better than 10% between phases. The accurate current limit eliminates the need for oversized external MOSFETs and inductors. Additional features include: the ability to start up monotonically when the output has a prebiased voltage; two enable inputs with accurate turn-on thresholds to allow output-voltage sequencing; external frequency synchronization; and thermal-shutdown and hiccup-mode protections.

The MAX15034 is available in either a 28-pin TSSOP or a 28-pin TSSOP with exposed pad. Both versions are fully specified over the -40°C to +125°C automotive temperature range. Prices start at $2.56 (1000-up, FOB USA). An evaluation kit is available.