PM6652 Single-phase controller for Intel MVP 6.5 render voltage regulator, CPU and VR11 CPU Datasheet production data Features 4.5 V to 36 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 VFQFPN-32 5x5 mm constant-on-time loop control Remote voltage sensing Description Programmable droop function 7-bit dynamic voltage positioning (VID) The PM6652 is a single-phase, step-down SMPS controller with high precision 7-bit DAC. It has Programmable PWM frequency been designed to supply the CPU and the Lossless current sense with inductor DCR graphics core (render engine) of the Intel mobile Accurate inductor current sense with R platform, according to Intel MVP6.5 SENSE specifications. Negative current limit The PM6652 can also be configured to supply the Boot diode embedded 7-bit family, VR11 compliant, ATOM processors. Latched OVP, UVP and overtemperature The controller, based on constant on-time (COT) Pulse-skipping when suspend state is selected architecture, allows real-time dynamic switching Output voltage ripple compensation of the core operating voltages and frequencies, Soft-start and soft-end working in both performance and suspend render states. Power good available An embedded integrator control loop Current monitor (IMON) compensates the DC voltage error due to the Thermal throttling output ripple. The high efficiency at light load, achieved with Applications pulse-skipping working mode, and the extremely low shutdown and quiescent adsorbed current, Intel mobile graphic core IMVP6.5 make the PM6652 the ideal choice in battery Intel mobile CPU IMVP6.5 powered devices. Intel ATOM VR11 based devices Notebook, netbook and nettop computers Handheld devices and PDAs Table 1. Device summary Order codes Package Packaging PM6652 Tray VFQFPN-32 5 x 5 mm (exposed pad) PM6652TR Tape and reel March 2012 Doc ID 16867 Rev 5 1/53 This is information on a product in full production. www.st.com 53 Obsolete Product(s) - Obsolete Product(s)Contents PM6652 Contents 1 Typical application circuit 6 2 Pin settings 8 2.1 Connections 8 2.2 Pin description 8 3 Electrical data . 10 3.1 Maximum rating 10 3.2 Thermal data 10 3.3 Recommended operating conditions 11 4 Electrical characteristics 12 5 Voltage identification (VID) . 15 6 Typical operating characteristics . 19 7 Block diagram . 23 8 Device description . 24 8.1 Constant on-time PWM control 24 8.1.1 Constant on-time PWM architecture . 26 8.1.2 Output ripple compensation 26 8.2 Mode selection . 27 8.3 Pulse-skip working mode . 28 8.4 Differential remote sensing 28 8.5 Droop function . 28 8.6 Voltage dynamic (VID) transitions 29 8.7 Current sensing 30 8.8 Soft-start and soft-end . 32 8.9 Internal MOS drivers 34 8.10 Monitoring and protection . 34 8.10.1 Power good 34 2/53 Doc ID 16867 Rev 5 Obsolete Product(s) - Obsolete Product(s)