ST PM6692 User Manual
PM6692
Two phase controller for Intel MVP7 GPU and CPU power supply
Features
■ 4.5 V to 28 V input voltage range
■ 0.25 V to 1.52 V output voltage range, 8 bit
SVID
■ IMVP7 spec compliant
■ Selectable PWM switching frequency,
maximum temperature, maximum currents,
boot voltage, VID transitions slew rate slow
■ Adjustable load line (LL), 1 NTC needed for LL
thermal compensation
■ Lossless current sense with inductor DCR or
accurate inductor current sense with R
■
CkCOT (clocked constant on time control loop)
SENSE
allows almost fixed pwm switching frequency
■ Output voltage ripple compensation
■ Phase overlap in load transient
■ Tunable overshoot threshold (TOT) allows to
reduce overshoot in load transient
■ Skip mode and dual low side gate allows to
increase efficiency at light load
■ Average OCP for all phases and cycle by cycle
OCP for each phase
■ Embedded gate drivers and bootstrap diodes
■ Adjustable VID transitions feature
QFN40 - 5x5
(exposed pad)
Description
The PM6692 is a two phase step-down switching
controller with embedded gate drivers. It has been
designed to supply the CPU and GPU of the
®
Intel
mobile platform, according with INTEL
MVP7 specifications.
The controller is based on clocked constant ontime (CkCOT) architecture that allows nearly
constant switching frequency over load.
The controller ensures 180° phase shift PWM
operation when all the 2 phases are enabled.
An embedded integrator control loop
compensates the DC voltage error due to the
output voltage ripple. Load line of the output
voltage can be adjusted by setting a resistor
divider and it can be thermally compensated by
using 1 NTC.
Data brief
Applications
■ Intel
Table 1. Device summary
®
mobile CPU and GPU core IMVP7
Order codes Package Packaging
PM6692
PM6692TR Tape and reel
QFN40 - 5x5
(exposed pad)
Tr ay
Current monitor IMON provides an analog output
current proportional to the CPU load current.
1NTC can be used to sense the maximum
temperature of the switching regulator and
provide the temperature information to the CPU
through SVID bus.
Adjustable VID transitions feature, TOT feature,
extremely low shutdown and quiescent current
make the PM6692 a very flexible and costeffective solution for IMVP7 CPU power supply.
March 2011 Doc ID 018641 Rev 1 1/3
For further information contact your local STMicroelectronics sales office.
www.st.com
3
Revision history PM669
Revision history
Table 2. Document revision history
Date Revision Changes
29-Mar-2011 1 Initial release
2/3 Doc ID 018641 Rev 1
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