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3B0365 Schematic ( PDF Datasheet ) - Infineon Technologies

Teilenummer 3B0365
Beschreibung ICE3B0365
Hersteller Infineon Technologies
Logo Infineon Technologies Logo 




Gesamt 30 Seiten
3B0365 Datasheet, Funktion
Datasheet, V1.3, 15 Sep 2004
C o o l S E T™-F3
ICE3A(B)0365/0565/1065/1565
ICE3A(B)2065/2565
ICE3A0565Z/2065Z
ICE3A(B)2065I/3065I/3565I
ICE3A(B)5065I/5565I
ICE3A(B)2065P/3065P/3565P
ICE3A(B)5065P/5565P
Off-Line SMPS Current Mode
Controller with integrated 650V
Startup Cell/CoolMOS™
Power Management & Supply
Never stop thinking.






3B0365 Datasheet, Funktion
CoolSET™-F3
Table of Contents
Page
1 Pin Configuration and Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
1.1 Pin Configuration with PG-DIP-8-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
1.2 Pin Configuration with PG-DIP-7-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
1.3 Pin Configuration with P-TO220-6-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
1.4 Pin Configuration with P-TO220-6-47 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
1.5 Pin Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
2 Representative Blockdiagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
3
3.1
3.2
3.3
3.4
3.4.1
3.4.2
3.4.3
3.5
3.5.1
3.5.2
3.6
3.6.1
3.6.2
3.6.2.1
3.6.2.2
3.6.2.3
3.6.3
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Power Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Startup Phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
PWM Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
PWM-Latch FF1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Gate Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Current Limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Leading Edge Blanking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Propagation Delay Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Control Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Adjustable Blanking Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Active Burst Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Entering Active Burst Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Working in Active Burst Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Leaving Active Burst Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Protection Mode (Auto Restart Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . .17
4
4.1
4.2
4.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.3.6
4.3.7
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Operating Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Supply Section 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Supply Section 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Internal Voltage Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
PWM Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Control Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Current Limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
CoolMOS™ Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
5 Outline Dimension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Version 1.3
6 15 Sep 2004

6 Page









3B0365 pdf, datenblatt
CoolSET™-F3
Functional Description
Once the malfunction condition is removed, this block
will then turn back on. The recovery from Auto Restart
Mode does not require disconnecting the SMPS from
the AC line
When Active Burst Mode is entered, the internal Bias is
switched off in order to reduce the current consumption
to below 1.05mA while keeping the Voltage Reference
active as this is necessary in this mode.
maximum charge current in the very first stage when
VSoftS is below 1V, is limited to 1.32mA.
VSoftS
5.4V
4V
max. Startup Phase
3.3 Startup Phase
1V
6.5V max. Soft Start Phase
SoftS
3.25k
RSoftS
T2
T3 1V
DCmax
DC1
DC2
t
CSoftS
Soft Start
C7
Soft-Start
Comparator
&
G7
Gate Driver
C2
4V
0.85V
x3.7
PWMOP
CS
t1 t2 t
Figure 8 Startup Phase
By means of this extra charge stage, there is no delay
in the beginning of the Startup Phase when there is still
no switching. Furthermore Soft Start is finished at 4V to
have faster the maximum power capability. The duty
cycles DC1 and DC2 are depending on the mains and
the primary inductance of the transformer. The
limitation of the primary current by DC2 is related to
VSoftS = 4V. But DC1 is related to a maximum primary
current which is limited by the internal Current Limiting
with CS = 1V. Therefore the maximum Startup Phase
is divided into a Soft Start Phase until t1 and a phase
from t1 until t2 where maximum power is provided if
demanded by the FB signal.
Figure 7 Soft Start
At the beginning of the Startup Phase, the IC provides
a Soft Start duration whereby it controls the maximum
primary current by means of a duty cycle limitation. A
signal VSoftS which is generated by the external
capacitor CSofts in combination with the internal pull up
resistor RSoftS, determines the duty cycle until VSoftS
exceeds 4V.
When the Soft Start begins, CSoftS is immediately
charged up to approx. 1V by T2. Therefore the Soft
Start Phase takes place between 1V and 4V. Above
VSoftsS = 4V there is no longer duty cycle limitation
DCmax which is controlled by comparator C7 since
comparator C2 blocks the gate G7 (see Figure 6). This
Version 1.3
12 15 Sep 2004

12 Page





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