3BR4765J Ver la hoja de datos (PDF) - Infineon Technologies

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3BR4765J

Off-Line SMPS Current Mode Controller with integrated 650V CoolMOS ® and Startup cell (frequency jitter Mode) in DIP-8

Infineon Technologies 

4.3.2

Internal Voltage Reference

Parameter

Symbol

Trimmed Reference Voltage

VREF

CoolSET®-F3R

ICE3BR4765J

Electrical Characteristics

min.

4.90

Limit Values

typ.

max.

5.00 5.10

Unit Test Condition

V

measured at pin FB

IFB = 0

4.3.3

PWM Section

Parameter

Fixed Oscillator Frequency

Frequency Jittering Range

Frequency Jittering period

Max. Duty Cycle

Min. Duty Cycle

Symbol

fOSC1

fOSC2

fjitter

Tjitter

Dmax

Dmin

Limit Values

Unit

min. typ.

max.

56.5 65.0 73.5 kHz

59.8 65.0 70.2 kHz

-

±2.6 -

kHz

-

4.0

-

ms

0.70 0.75 0.80

0

-

-

Test Condition

Tj = 25°C

Tj = 25°C

Tj = 25°C

VFB < 0.3V

PWM-OP Gain

AV

3.1

3.3

3.5

Voltage Ramp Offset

VOffset-Ramp

-

0.67 -

V

VFB Operating Range Min Level VFBmin

-

0.5

-

V

VFB Operating Range Max level VFBmax

-

FB Pull-Up Resistor

RFB

9

-

4.3

V

CS=1V, limited by

Comparator C41)

15.4 22

kΩ

1) The parameter is not subjected to production test - verified by design/characterization

4.3.4

Soft Start time

Parameter

Soft Start time

Symbol

tSS

min.

-

Limit Values

typ.

max.

20.0 -

Unit Test Condition

ms

Version 2.5

21

19 Nov 2012

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