VIPER17LN Ver la hoja de datos (PDF) - STMicroelectronics

Número de pieza

componentes Descripción

Fabricante

VIPER17LN

Off-line high voltage converters

STMicroelectronics 

Electrical data

VIPER17

Table 8. Controller section

(TJ = -25 to 125 °C, VDD = 14 V; unless otherwise specified)

Symbol

Parameter

Test condition

Min Typ Max Unit

Feed-back pin

VFBolp

VFBlin

VFBbm

VFBbmhys

IFB

RFB(DYN)

HFB

CONT pin

Over load shut down

threshold

Linear dynamics upper limit

Burst mode threshold

Voltage falling

Burst mode hysteresis

Voltage rising

Feed-back sourced current

Dynamic resistance

ΔVFB / ΔID

VFB = 0.3 V

3.3 V < VFB < 4.8 V

VFB < 3.3 V

VCONT_l Low level clamp voltage

Current limitation

ICONT = -100 μA

IDlim

tSS

TON_MIN

td

tLEB

ID_BM

Max drain current limitation

Soft-start time

Minimum turn ON time

Propagation delay

Leading edge blanking

Peak drain current during

burst mode

VFB = 4 V,

ICONT = -10 µA

TJ = 25 °C

VFB = 0.6 V

Oscillator section

FOSC

VIPER17L

VIPER17H

FD

FM

DMAX

Modulation depth

Modulation frequency

Maximum duty cycle

VDD = operating

voltage range,

VFB = 1 V

VIPER17L

VIPER17H

4.7 4.8 5.2 V

3.2 3.3 3.4 V

0.4 0.5 0.6 V

50

mV

-150 -200 -280 uA

-3

uA

14

19 kΩ

4

9 V/A

0.5

V

0.38 0.4 0.42 A

8.5

ms

220 400 480 ns

100

ns

300

ns

90

mA

54 60 66 kHz

103 115 127 kHz

±4

kHz

±8

kHz

250

Hz

70

80 %

8/33

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