L6722 datasheet(8/34 Pages) STMICROELECTRONICS

8 / 34 page

2 Pins description and connection diagrams

L6722

8/34

9LGATE2

Channel 2 LS Driver Output.

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

LGATE3

Channel 3 LS Driver Output.

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

BOOT1

Channel 1 HS driver supply.

Connect through a capacitor (100nF typ.) to PHASE1 and provide

necessary Bootstrap diode.

A small series resistor before the boot diode helps in reducing Boot

capacitor overcharge.

UGATE1

Channel 1 HS driver output.

A small series resistors helps in reducing device-dissipated power.

PHASE1

Channel 1 HS driver return path.

It must be connected to the HS1 mosfet source and provides return path

for the HS driver of channel 1.

BOOT2

Channel 2 HS driver supply.

Connect through a capacitor (100nF typ.) to PHASE2 and provide

necessary Bootstrap diode.

A small series resistor before the boot diode helps in reducing Boot

capacitor overcharge.

UGATE2

Channel 2 HS driver output.

A small series resistors helps in reducing device-dissipated power.

PHASE2

Channel 2 HS driver return path.

It must be connected to the HS2 mosfet source and provides return path

for the HS driver of channel 2.

BOOT3

Channel 3 HS driver supply.

Connect through a capacitor (100nF typ.) to PHASE3 and provide

necessary Bootstrap diode.

A small series resistor before the boot diode helps in reducing Boot

capacitor overcharge.

UGATE3

Channel 3 HS driver output.

A small series resistors helps in reducing device-dissipated power.

PHASE3

Channel 3 HS driver return path.

It must be connected to the HS3 mosfet source and provides return path

for the HS driver of channel 3.

N.C.

Not Internally Bonded.

PGOOD

Open Drain Output set free after SS has finished and pulled low when

VSEN is lower than the relative threshold. Pull up to a voltage lower than

5V (typ), if not used it can be left floating.

N.C.

Not Internally Bonded.

Table 1.

Pins description (continued)

Pin#

Name

Function

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