VIPER28 Ver la hoja de datos (PDF) - STMicroelectronics

Número de pieza

componentes Descripción

Fabricante

VIPER28

Off-line high voltage converters

STMicroelectronics 

Operation descriptions

VIPER28

Figure 19. Timing diagram: normal power-up and power-down sequences

VIN

VDRAIN_START

VDD

VDDon

VDDoff

VDD(RESTART)

VDRAIN

VIN < VDRAIN_START

HV startup is no more activated

regulation is lost here

time

time

IDD

IDDch (3mA)

Power-on

Normal operation

Figure 20. Soft-start: timing diagram

IDRAIN

IDlim

tSS (soft start)

time

time

Power-off

VFB

VFBolp

VFBlin

t

TOLP-delay

VOUT

t

Regulated value

t

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Doc ID 15028 Rev 5

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