VIPER53-E Ver la hoja de datos (PDF) - STMicroelectronics

Número de pieza

componentes Descripción

Fabricante

VIPER53-E

OFF-line primary switch

STMicroelectronics 

Electrical characteristics

VIPer53 - E

Table 7. PWM comparator section

Symbol

Parameter

Test conditions

HCOMP ∆VCOMP / ∆IDPEAK

VCOMPos VCOMP Offset

VCOMP = 1 ... 4 V Figure 10.

dID/dt = 0

dID/dt = 0 Figure 10. on page 11

IDlim

IDmax

td

Peak drain current

limitation

ICOMP = 0mA; VTOVL = 0V

Figure 10.

dID/dt = 0

Drain current

capability

VCOMP = VCOMPovl; VTOVL = 0V

dID/dt = 0

Current sense delay to

Turn-Off

ID = 1A

VCOMPbl

VCOMP blanking time

change threshold

Figure 6 on page 10

tb1 Blanking time

VCOMP < VCOMPBLFigure 6.

tb2 Blanking time

VCOMP > VCOMPBLFigure 6.

tONmin1 Minimum On time

VCOMP < VCOMPBL

tONmin2 Minimum On time

VCOMPoff

VCOMP Shutdown

Threshold

VCOMP > VCOMPBL

Figure 9 on page 11

Min. Typ. Max. Unit

1.7 2 2.3 V/A

0.5

V

1.7 2 2.3 A

1.6 1.9 2.3 A

250

ns

1

V

300 400 500 ns

100 150 200 ns

450 600 750 ns

250 350 450 ns

0.5

V

Table 8. Overload protection section

Symbol

Parameter

Test conditions

VCOMPovl

VCOMP overload

threshold

ITOVL = 0mA (1)

Figure 4 on page 9

VDIFFovl

VCOMPhi to VCOMPovl

voltage difference

VDD = VDDoff ... VDDreg;

ITOVL= 0mA

Figure 4. (1)

VOVLth

VTOVL overload

threshold

Figure 4.

tOVL Overload delay

COVL = 100nF Figure 4.

1. VCOMPovl is always lower than VCOMPhi

Table 9. Over temperature Protection Section

Symbol

Parameter

Test Conditions

TSD

THYST

Thermal shutdown

temperature

Thermal shutdown

hysteresis

Figure 7 on page 10

Figure 7 on page 10

Min. Typ. Max. Unit

4.35

V

50 150 250 mV

4

V

8

ms

Min. Typ. Max. Unit

140 160

°C

40

°C

6/36

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