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PDF ICE3AR10080CJZ Data sheet ( Hoja de datos )

Número de pieza ICE3AR10080CJZ
Descripción Off-Line SMPS Current Mode Controller
Fabricantes Infineon Technologies 
Logotipo Infineon Technologies Logotipo



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No Preview Available ! ICE3AR10080CJZ Hoja de datos, Descripción, Manual

Version 2.0, 11 Jan 2012
®
Never stop thinking.

1 page




ICE3AR10080CJZ pdf
CoolSET®-F3R80
ICE3AR10080CJZ
4.3.7
5
6
7
8
9
CoolMOS® Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
CoolMOS® Perfromance Characteristic . . . . . . . . . . . . . . . . . . . . . . . . . .26
Input Power Curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Outline Dimension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Schematic for recommended PCB layout . . . . . . . . . . . . . . . . . . . . . . . .31
Version 2.0
5 11 Jan 2012

5 Page





ICE3AR10080CJZ arduino
CoolSET®-F3R80
ICE3AR10080CJZ
Functional Description
3.4 Startup Phase
Soft Start counter
SoftS
Soft Start
The function is realized by an internal Soft Start
resistor, an current sink and a counter. And the
amplitude of the current sink is controlled by the
counter (Figure 12).
5V
SoftS
RSoftS
Soft Start
Soft-Start
C om parator
C7 &
G7
Gate Driver
Soft Start 32I 8I 4I 2I
Counter
I
0.6V
x3.25
PWM OP
CS
Figure 10 Soft Start
In the Startup Phase, the IC provides a Soft Start
period to control the primary current by means of a duty
cycle limitation. The Soft Start function is a built-in
function and it is controlled by an internal counter.
.
Figure 12 Soft Start Circuit
After the IC is switched on, the VSoftS voltage is
controlled such that the voltage is increased step-
wisely (32 steps) with the increase of the counts. The
Soft Start counter would send a signal to the current
sink control in every 300ms such that the current sink
decrease gradually and the duty ratio of the gate drive
increases gradually. The Soft Start will be finished in
10ms (tSoft-Start) after the IC is switched on. At the end of
the Soft Start period, the current sink is switched off.
Within the soft start period, the duty cycle is increasing
from zero to maximum gradually (see Figure 13).
V S oftS
V SOFTS32
tSoft-Start
V SoftS
V SoftS2
V SoftS1
Gate
Driver
t
Figure 11 Soft Start Phase
When the VVCC exceeds the on-threshold voltage, the
IC starts the Soft Start mode (Figure 11).
t
Figure 13 Gate drive signal under Soft-Start Phase
Version 2.0
11 11 Jan 2012

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