VIPER114XSTR datasheet(9/37 Pages) STMICROELECTRONICS

9 / 37 page

DS11873 Rev 5

9/37

VIPer11

Electrical characteristics

Iclamp max Clamp shutdown current

(2)

tclamp max Clamp time before shutdown

325

500

675

μs

VCCon

VCC start-up threshold

VFB = 1.2 V

VDRAIN = 400 V

VCSon

HV current source turn-on

threshold

VCC falling

4.25

4.5

VCCoff

UVLO

VFB = 1.2 V

VDRAIN = 400 V

3.75

4.25

Quiescent current

Not switching

VFB > VFB_REF

0.3

0.45

ICC

Operating supply current,

switching

VDS = 150 V

VCOMP = 1.2 V

FOSC = 30 kHz

1.2

VDS = 150 V

VCOMP = 1.2 V

FOSC = 60 kHz

1.25

1.5

VDS = 150 V

VCOMP = 1.2 V

FOSC = 120 kHz

1.5

1.8

1. Current supplied during the main MOSFET OFF time only.

2. Parameter assured by design and characterization.

Table 7. Controller section

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

E/A

VFB_REF

Reference voltage

1.175

1.2

1.225

VFB_DIS

E/A disable voltage

150

180

210

IFB PULL UP

Pull-up current

0.9

1.1

μA

Transconductance

VCOMP = 1.5 V

VFB > VFB_REF

350

500

650

μA/V

ICOMP1

Max. source current

VCOMP = 1.5 V

VFB = 0.5 V

100

125

μA

ICOMP2

Max. sink current

VFB = 2 V

VCOMP = 1.5 V

100

125

μA

RCOMP(DYN) Dynamic resistance

VCOMP = 2.7 V

VFB = GND



Table 6. Supply section (continued)

Symbol

Parameter

Test conditions

Min.

Typ.

Max. Unit

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