RT8855应用电路及参数,8855 2023-11-06 12:08:48 0 0 RT8855应用电路及参数 4/3/2/1-Phase PWM Controller for AMD AM2/AM2+ CPUs The RT8855 is a 4/3/2/1-phase synchronous buck controller with two integrated MOSFET drivers for CPU power application and a single-phase buck with integrated MOSFET driver for North-Bridge (NB) chipset.The RT8855 uses differential inductor DCR current sense to achieve phase current balance and active voltage positioning. Other features include adjustable operating frequency, power good indication, external error-amp compensation, over voltage protection, over current protection and enable/shutdown for various applications. The RT8855 comes to a small footprint with WQFN-48L 7x7 package. Features • 12V Power Supply Voltage • 4/3/2/1-Phase Power Conversion for VCORE Power • 3 Embedded MOSFET Drivers (2 for CPU and 1 for NB) • Internal Regulated 5V Output • Support AMD AM2 6-bit Parallel and AM2+ 7-bit Serial VID Tables • Continuous Differential Inductor DCR Current Sense • Adjustable Frequency (Typically at 300kHz) • Selectable 1 or 2 Phase in Power-Saving (PS) Mode • Phase-Interleaving for VCORE and NB Controller • Power Good Indication • Adjustable Over Current Protection • Over Voltage Protection • Small 48-Lead WQFN Package • RoHS Compliant and Halogen Free Application • Desktop CPU Core Power • Low Voltage, High Current DC/ DC Converter Typical Applications Circuit 收藏(0)