L6718 datasheet(12/71 Pages) STMICROELECTRONICS

12 / 71 page

Pin description and connection diagrams

L6718

12/71

DocID023399 Rev 3

2.1

Pin description

Table 2. Pin description

Pin#

Name

Function

1CS1N

Channel 1 current sense negative input.

Connect through an RG resistor to the output-side of channel 1 inductor.

Filter the output-side of RG with 100 nF (typ.) to GND.

This pin is compared with VSEN for the feedback disconnection.

See Section 14 for proper layout of this connection.

2CS1P

Channel 1 current sense positive input.

Connect through an R-C filter to the phase-side of channel 1 inductor.

See Section 14 for proper layout of this connection.

3CS3P

Channel 3 current sense positive input.

Connect through an R-C filter to the phase-side of channel 3 inductor.

Short to VOUT when not using channel 3.

See Section 14 for proper layout of this connection.

4CS3N

Channel 3 current sense negative input.

Connect through an RG resistor to the output-side of channel 3 inductor.

Filter the output-side of RG with 100 nF (typ.) to GND.

Connect to VOUT through an RG resistor when not using channel 3.

See Section 14 for proper layout of this connection.

5TM

Thermal monitor sensor.

Connect with proper network embedding NTC to the multi-phase rail

power section. The IC senses the power section temperature and uses

the information to define the VRHOT signal and temperature zone

By programming proper TCOMP gain, the IC also implements load-line

thermal compensation for the multi-phase rail section. See Section 10 for

details.

VRHOT

Voltage regulator HOT.

Open drain output, set free by controller when the temperature sensed

through the TM pin exceeds TMAX (active low).

See Section 10.1 for details.

SVCLK

Serial clock

8SVDATA

Serial data

9ALERT#

Alert

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