PM6652

PM6652 Single phase controller for Intel® MVP 6.5 render voltage regulator, CPU and VR11 CPU Features ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ 4.5 V to 28 V input voltage range 0.3 V to 1.5 V output voltage range IMVP6.5 GPU/CPU and VR11 CPU mode selection Very fast load transient response using constant-on-time loop control Remote voltage sensing Programmable droop function 7 bit dynamic voltage positioning (VID) Programmable pwm frequency Lossless current sense with inductor DCR Accurate inductor current sense with rsense Negative current limit Boot diode embedded Latched OVP, UVP and overtemperature Pulse skipping when suspend state is selected Output voltage ripple compensation Soft start and soft end VFQFPN-32 5x5 mm Description The PM6652 is a single phase, step-down SMPS controller with high precision 7 bit DAC. It has been designed to supply the CPU and the graphics core (render engine) of the Intel® mobile platform, according with Intel MVP6.5 specifications. The PM6652 can also be configured to supply the 7-bit family, VR11 compliant, ATOM® processors. The controller, based on constant on-time (COT) architecture, allows real-time dynamic switching of the core operating voltages and frequencies, working in both performance and suspend render states. An embedded integrator control loop compensates the DC voltage error due to the output ripple. The high efficiency at light load, achieved with pulse skipping working mode, and the extremely low shutdown and quiescent adsorbed c...