L6566B datasheet(16/51 Pages) STMICROELECTRONICS

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Electrical characteristics

L6566B

16/51

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

Soft-start

ISS1

Charge current

TJ = 25 °C, VSS < 2 V,

VCOMP = 4 V

µA

ISS2

TJ = 25 °C, VSS > 2 V,

VCOMP =VCOMPHi

3.5

6.5

ISSdis

Discharge current

VSS > 2 V

3.5

6.5

µA

VSSclamp

High saturation voltage

VCOMP = 4 V

VSSDIS

Disable level

(1) V

COMP =VCOMPHi

4.85

5.15

VSSLAT

Latch-off level

VCOMP =VCOMPHi

6.4

Gate driver

VGDH

Output high voltage

IGDsource = 5 mA, Vcc = 12V

9.8

VGDL

Output low voltage

IGDsink = 100 mA

0.75

Isourcepk

Output source peak current

-0.6

Isinkpk

Output sink peak current

0.8

Fall time

Rise time

VGDclamp

Output clamp voltage

IGDsource = 5mA; Vcc = 20V

11.3

UVLO saturation

Vcc = 0 to Vccon, Isink = 1mA

0.9

1.1

Parameters tracking one another.

See Table 6 on page 41 and Table 7 on page 42

The Voltage Feedforward block output is given by:

Table 5. Electrical characteristics (continued)

()

VFF

COMP

−

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