uP6203

uP6203 Compact Dual-Phase Synchronous-Rectified Buck Controller General Description The uP6203 is a compact dual-phase synchronous-rectified Buck controller specifically designed to deliver high quality output voltage for high power applications. This part is capable of delivering up to 60A output current owing to its embedded bootstrapped drivers that support 12V + 12V driving capability. The uP6203 features configurable gate driving voltage for maximum efficiency and optimal performance. The built-in bootstrap diode simplifies the circuit design and reduces external part count and PCB space. The output voltage is precisely regulated to internal 0.6V or external reference voltage from 0.4V to 3.3V. The uP6203 adopts lossless RDS(ON) current sensing technique for channel current balance and over current protection. A MODE pin programs single- or dual- phase operation that makes the uP6203 ideally suitable for dual power input applications such as PCIE interfaced graphic cards. When programmed as automatic mode, the uP6203 operates in single phase at light load condition and maintains high efficiency over the output current range. This part features comprehensive protection functions including over current protection, input/output under voltage protection, over voltage protection and over temperature protection. Other features include adjustable soft start, adjustable operation phase, and quick response to step load transient. With aforementioned functions, this part provides ...