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38

VCCDR3

Channel 3 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. PGND3.

39

PGND2

Channel 2 LS driver return path.

Connect to Power Ground Plane.

40

LGATE2

Channel 2 LS driver output.

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

41

VCCDR2

Channel 2 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. PGND2.

42

PHASE2 Channel 2 HS driver return path. It must be connected to the HS2 mosfet source and provides

the return path for the HS driver of channel 2.

43

UGATE2 Channel 2 HS driver output.

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

44

BOOT2

Channel 2 HS driver supply. This pin supplies the relative high side driver.

Connect through a capacitor (100nF Typ.) to the PHASE2 pin and through a diode to VCC (cath-

ode vs. boot).

45

BOOT1

Channel 1 HS driver supply. This pin supplies the relative high side driver.

Connect through a capacitor (100nF Typ.) to the PHASE1 pin and through a diode to VCC (cath-

ode vs. boot).

46

UGATE1 Channel 1 HS driver output.

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

47

PHASE1 Channel 1 HS driver return path. It must be connected to the HS1 mosfet source and provides

the return path for the HS driver of channel 1.

48

N.C.

Not internally connected.

PAD

THERM

AL PAD

Thermal pad connects the silicon substrate and makes a good thermal contact with the PCB to

dissipate the power necessary to drive the external mosfets. Connect to the GND plane with sev-

eral vias to improve thermal conductivity.

Electrical Characteristcs

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

VCC supply current

HGATEx and LGATEx open

VCCDRx=VBOOTx=12V

18

23

mA

VCCDRx supply current

LGATEx open; VCCDRx=12V

1.5

2

mA

BOOTx supply current

HGATEx open;PHASEx to

PGNDx

VCC=BOOTx=12V

11.5

mA

POWER-ON

Turn-On VCC threshold

VCC Rising; VCCDRx=5V

8.2

9.2

10.2

V

Turn-Off VCC threshold

VCC Falling; VCCDRx=5V

6.5

7.5

8.5

V

Turn-On VCCDRx

Threshold

VCCDRx Rising

VCC=12V

4.2

4.4

4.6

V

Table 4. Pin Function (continued)

N°

Name

Description