PM6652 STMicroelectronics, PM6652 Datasheet - Page 4

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PM6652

Manufacturer Part Number
PM6652
Description
IC CTLR STEPDOWN SMPS 32VFQFPN
Manufacturer
STMicroelectronics
Datasheet

Specifications of PM6652

Applications
Controller, Intel IMVP-6.5™, VR11
Voltage - Input
4.5 V ~ 36 V
Number Of Outputs
1
Voltage - Output
0.3 V ~ 1.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
32-VFQFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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Typical application circuit - IMVP6.5 render core supply . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Typical application circuit - IMVP6.5 LV/ULV CPU supply . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Typical application circuit – VR11 Atom CPU supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
PM6652 pin out (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Pin functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
VCORE turn on and PGOOD rising - No load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
VCORE turn on- CPU IMVP6.5 mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
VCORE working mode - DPRSLPVR asserted, no load. . . . . . . . . . . . . . . . . . . . . . . . . . . 20
VCORE working mode (0.9 V) - DPRSLPVR asserted, no load. . . . . . . . . . . . . . . . . . . . . 20
VCORE working mode (0.4 V) - DPRSLPVR asserted, no load. . . . . . . . . . . . . . . . . . . . . 21
VCORE working mode - DPRSLPVR not asserted, no load. . . . . . . . . . . . . . . . . . . . . . . . 21
VCORE working mode - DPRSLPVR not asserted, 10 A load . . . . . . . . . . . . . . . . . . . . . . 21
VCORE working mode (0.9 V) - DPRSLPVR not asserted, no load. . . . . . . . . . . . . . . . . . 21
VCORE working mode (0.4 V) - DPRSLPVR not asserted, no load. . . . . . . . . . . . . . . . . . 21
VID5 transition - entering and exiting suspend state (fast exit) . . . . . . . . . . . . . . . . . . . . . 21
VID5 transition - entering and exiting suspend state (slow exit) . . . . . . . . . . . . . . . . . . . . . 22
Droop function - 5 A to 15 A transient response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
VCORE VID step variation - VR11 mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
VCORE soft end - COREON pin deassertion and PGOOD transition . . . . . . . . . . . . . . . . 22
VCORE overvoltage (+200 mV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
VCORE undervoltage (-300 mV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
VCORE efficiency (DPRSLPVR high and low) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
VCORE load regulation - droop function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Simplified block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
PM6652 integrator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
PM6652 droop function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
GFX supply - VID step, skip mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
CPU IMVP6.5 - VID step, skip mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Precision resistor current sensing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Inductor's DCR current sensing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
ôL > ôC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
ôL < ôC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Thermal compensation network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
IMVP6.5 GFX mode start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
IMPV6.5 CPU mode start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
VDAC soft-start voltage slew-rate vs capacitor value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Average current limit - recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Average current limit detected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Current monitor with external components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Voltage regulator thermal throttling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Valley current limit circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Valley current limit detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
C15 good and C34 OK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
C15 big and C34 OK. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
C15 small and C34 OK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
C15 good and C34 small . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
C15 good and C34 big . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
C15 OK and C34 OK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Doc ID 16867 Rev 3
PM6652

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