L6717 datasheet(33/56 Pages) STMICROELECTRONICS

Part #	L6717

Description	High-efficiency hybrid AM2r2 controller with I2C interface and embedded drivers

PDF	56 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

Logo

33 / 56 page

L6717

Power manager I2C

Doc ID 17326 Rev 1

33/56

When the soft start is over and once PWRGOOD rise to Logic “1”, L6717 can receive

commands on power manager I2C bus to enable DPM.

Once DPM is enabled, L6717 starts monitoring the ILIM voltage: the voltage is compared

with the internal VDPM threshold defining the current level to trigger the number modification.

DPM is reset in particular conditions:

–

during OTF VID transition issued by the CPU;

–

when LTB Technology® detects a load transient.

After being reset, DPM is re-enabled with a proper delay: the phase number is again defined

according to the ILIM pin voltage with respect VDPM.

Delay in the intervention of DPM can be adjusted by properly sizing the filer across ILIM pin.

Increasing the capacitance results in increased delay in the DPM intervention.

L6717 Datasheet(PDF) 33 Page - STMicroelectronics