L6751B datasheet(9/58 Pages) STMICROELECTRONICS

9 / 58 page

L6751B

Pin description and connection diagram

Doc ID 024028 Rev 1

9/58

6GND

GND connection. All internal references and logic are referenced to this

pin. Filter to VCC5 with proper MLCC capacitor and connect to the PCB

GND plane.

7CS6N

Channel 6 current sense negative input. Connect through an Rg resistor to

the output-side of the channel inductor. When working at <6 phases, still

connect through Rg to CS6P and then to the regulated voltage. Filter the

output-side of Rg with 100 nF (typ.) to GND.

8CS6P

Channel 6 current sense positive input. Connect through an R-C filter to

the phase-side of the channel 6 inductor. When working at < 6 phases,

short to the regulated voltage.

9CS5P

Channel 5 current sense positive input. Connect through an R-C filter to

the phase-side of the channel 5 inductor. When working at < 5 phases,

short to the regulated voltage.

CS5N

Channel 5 current sense negative input. Connect through an Rg resistor to

the output-side of the channel inductor. When working at < 5 phases, still

connect through Rg to CS5P and then to the regulated voltage. Filter the

output-side of Rg with 100 nF (typ.) to GND.

CS4N

Channel 4 current sense negative input. Connect through an Rg resistor to

the output-side of the channel inductor. When working at < 4 phases, still

connect through Rg to CS4P and then to the regulated voltage. Filter the

output-side of Rg with 100 nF (typ.) to GND.

CS4P

Channel 4 current sense positive input. Connect through an R-C filter to

the phase-side of the channel 4 inductor. When working at < 4 phases,

short to the regulated voltage.

CS3P

Channel 3 current sense positive input. Connect through an R-C filter to

the phase-side of the channel 3 inductor. When working at < 3 phases,

short to the regulated voltage.

CS3N

Channel 3 current sense negative input. Connect through an Rg resistor to

the output-side of the channel inductor. When working at < 3 phases, still

connect through Rg to CS3P and then to the regulated voltage. Filter the

output-side of Rg with 100 nF (typ.) to GND.

CS2N

Channel 2 current sense negative input. Connect through an Rg resistor to

the output-side of the channel inductor. Filter the output-side of Rg with

100 nF (typ.) to GND.

CS2P

Channel 2 current sense positive input. Connect through an R-C filter to

the phase-side of the channel 2 inductor.

CS1P

Channel 1 current sense positive input. Connect through an R-C filter to

the phase-side of the channel 1 inductor.

CS1N

Channel 1 current sense negative input. Connect through an Rg resistor to

the output-side of the channel inductor. Filter the output-side of Rg with

100 nF (typ.) to GND.

Table 2.

Pin description (continued)

Pin#

Name

Type

Function

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