VIPER27HD datasheet(6/31 Pages) STMICROELECTRONICS

6 / 31 page

Electrical data

VIPER27

6/31

Doc ID 15133 Rev 5

4.3

Electrical characteristics

(TJ = -25 to 125 °C, VDD = 14 V

(a); unless otherwise specified)

Adjust VDD above VDDon start-up threshold before settings to 14 V.

Table 6.

Power section

Symbol

Parameter

Test condition

Min Typ Max Unit

VBVDSS

Break-down voltage

IDRAIN = 1 mA, VFB = GND

TJ = 25 °C

800

IOFF

OFF state drain current

VDRAIN = max rating,

VFB = GND

μA

RDS(on)

Drain-source on state

resistance

IDRAIN = 0.4 A, VFB = 3 V, VBR = GND,

TJ = 25 °C

IDRAIN = 0.4 A, VFB = 3 V, VBR = GND,

TJ = 125 °C

COSS

Effective (energy related)

output capacitance

VDRAIN = 0 to 640 V

Table 7.

Supply section

Symbol

Parameter

Test condition

Min Typ Max Unit

Voltage

VDRAIN_START Drain-source start voltage

100

IDDch

Start up charging current

VDRAIN = 120 V, VBR = GND, VFB = GND,

VDD = 4 V

-2

-3

-4

VDRAIN = 120 V, VBR = GND, VFB = GND,

VDD = 4 V after fault.

-0.4 -0.6 -0.8

VDD

Operating voltage range

After turn-on

8.5

23.5

VDDclamp

VDD clamp voltage

IDD = 20 mA

23.5

VDDon

VDD start up threshold

VDRAIN = 120 V, VBR = GND, VFB = GND

VDDoff

VDD under voltage

shutdown threshold

7.5

8.5

VDD(RESTART)

VDD restart voltage

threshold

VDRAIN = 120 V, VBR = GND, VFB = GND

4.5

Current

IDD0

Operating supply current,

not switching

VFB = GND, FSW = 0 kHz, VBR = GND,

VDD = 10 V

0.9

IDD1

Operating supply current,

switching

VDRAIN = 120 V, FSW = 60 kHz

2.5

VDRAIN = 120 V, FSW = 115 kHz

3.5

IDD_FAULT

Operating supply current,

with protection tripping

400

μA

IDD_OFF

Operating supply current

with VDD < VDD_OFF

VDD = 7 V

270

μA

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