L6711 datasheet(7/50 Pages) STMICROELECTRONICS

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L6711

Pins description and connection diagrams

7/50

Pins description and connection diagrams

2.1

Pin descriptions

Figure 4.

Pins connection (top view)

36 35 34 33 32 31 30 29 28 27 26 25

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10 11 12

OUTEN

CS1-

CS1+

CS2-

CS2+

CS3-

CS3+

CS_SEL

OSC / FAULT

VID5

VID0

N.C.

PHASE1

UGATE1

BOOT1

BOOT2

UGATE2

PHASE2

VCCDR2

LGATE2

PGND2

VCCDR3

N.C.

L6711

Table 1.

Pins description

N°

Name

Description

VCCDR1

Channel 1 LS driver supply: it can be varied from 5V to 12V buses.

It must be connected together with other VCCDRx pins.

Filter locally with at least 1

µF ceramic cap vs. PGND1.

2LGATE1

Channel 1 LS driver output.

A little series resistor helps in reducing device-dissipated power.

PGND1

Channel 1 LS driver return path.

Connect to Power Ground Plane.

4VCC

Device supply voltage. The operative supply voltage is 12V ±15%.

Filter with 1

µF capacitor (Typ.) vs. SGND.

SGND

All the internal references are referred to this pin. Connect it to the PCB signal ground.

OFFSET

Offset programming pin, internally fixed at 1.240V.

Short to SGND to disable the offset generation or connect through a resistor ROFFSET to

SGND to program an offset (positive or negative, depending on TC status) to the regulated

output voltage as reported in the relative section.

7COMP

This pin is connected to the error amplifier output and is used to compensate the control

feedback loop.

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