The LTC7130 constant-frequency, peak current mode synchronous step-down dc/dc converter features temperature-compensated DCR current sensing and clock synchronization. It suits point-of-load applications such as high current / low voltage DSP / FPGA / ASIC reference designs. Other applications include telecom/datacom systems, distributed power architectures and general high power density systems.
20 VIN , 20 A monolithic synchronous buck converter with differential output sensing
The converter features a 4.5 to 20-V input range. Integrated n-channel MOSFETs can deliver continuous load currents as high as 20 A at output voltages ranging from 0.6 to 5.5 V. The operating frequency is selectable from 250kHz to 770kHz and can be synchronized to an external clock. The device’s total differential output voltage accuracy is ±0.5% over the –40° to 125°C operating junction temperature range. Multiple ICs can connect in parallel for higher current capability. It enhances the signal-to-noise ratio of the current sense signal, enabling the use of a low dc-resistance power inductor to maximize efficiency in high current applications.
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