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PDF ICE2B265 Data sheet ( Hoja de datos )

Número de pieza ICE2B265
Descripción (ICE2xxxx) Second Generation Integrated Power Ics With Enhanced Protection Features And Lowest Standby
Fabricantes Infineon Technologies 
Logotipo Infineon Technologies Logotipo



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No Preview Available ! ICE2B265 Hoja de datos, Descripción, Manual

( DataSheet : www.DataSheet4U.com )
Datasheet, Version 3.0, August 2002
CoolSET™-F2
ICE2A0565/165/265/365
ICE2B0565/165/265/365
ICE2A180Z/280Z
ICE2A765P/2B765P
Off-Line SMPS Current Mode
Controller with integrated 650V/
800V CoolMOS™
Power Management & Supply
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1 page




ICE2B265 pdf
CoolSET™-F2
Table of Contents
Page
1 Pin Configuration and Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.1 Pin Configuration with P-DIP-8-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2 Pin Configuration with P-DIP-7-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3 Pin Configuration with P-TO220-6-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.4 Pin Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2 Representative Blockdiagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3
3.1
3.2
3.2.1
3.2.2
3.3
3.4
3.4.1
3.4.2
3.5
3.5.1
3.5.2
3.6
3.7
3.8
3.8.1
3.8.2
3.8.3
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Power Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Improved Current Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
PWM-OP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
PWM-Comparator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Soft-Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Oscillator and Frequency Reduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Frequency Reduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Current Limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Leading Edge Blanking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Propagation Delay Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
PWM-Latch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Protection Unit (Auto Restart Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Overload & Open loop with normal load . . . . . . . . . . . . . . . . . . . . . . . . . 14
Overvoltage due to open loop with no load . . . . . . . . . . . . . . . . . . . . . . . 15
Thermal Shut Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4
4.1
4.2
4.3
4.4
4.4.1
4.4.2
4.4.3
4.4.4
4.4.5
4.4.6
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Thermal Impedance (ICE2A765P and ICE2B765P) . . . . . . . . . . . . . . . . . . 17
Operating Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Supply Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Internal Voltage Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Control Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Protection Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Current Limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
CoolMOS™ Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5 Typical Performance Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6 Layout recommendation for C18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
7 Outline Dimension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Datasheet
5 August 2002

5 Page





ICE2B265 arduino
CoolSET™-F2
Functional Description
6.5V
RFB Soft-Start Com parator
FB PW M -Latch
O p to c o u p le r
PW M Comparator
0 .8 V
PWM OP
Isense
x3.65
Im p ro ved
Current Mode
Figure 10 PWM Controlling
3.3 Soft-Start
V SoftS
5.6V
5.3V
T Soft-Start
G ate Driver
t
pullup resistor RSoft-Start. The Soft-Start-Comparator
compares the voltage at pin SoftS at the negative input
with the ramp signal of the PWM-OP at the positive
input. When Soft-Start voltage VSoftS is less than
Feedback voltage VFB the Soft-Start-Comparator limits
the pulse width by reseting the PWM-Latch (see Figure
9). In addition to Start-Up, Soft-Start is also activated at
each restart attempt during Auto Restart. By means of
the above mentioned CSoft-Start the Soft-Start can be
defined by the user. The Soft-Start is finished when
VSoftS exceeds 5.3V. At that time the Protection Unit is
activated by Comparator C4 and senses the FB by
Comparator C3 wether the voltage is below 4.8V which
means that the voltage on the secondary side of the
SMPS is settled. The internal Zener Diode at SoftS with
breaktrough voltage of 5.6V is to prevent the internal
circuit from saturation (see Figure 10).
5.6V
S o ftS
6 .5 V
Power-Up Reset
R Soft-Start
E rro r-L a tc h
RQ
6.5V
5 .3 V
C4
G2 S Q
4 .8 V
R FB
FB
C3
C lo c k
RQ
G ate
D river
SQ
PW M -Latch
Figure 12 Activation of Protection Unit
The Start-Up time TStart-Up within the converter output
voltage VOUT is settled must be shorter than the Soft-
Start Phase TSoft-Start (see Figure 11).
C Soft - Start
=
T Soft - Start
R Soft - Start ´ 1,69
By means of Soft-Start there is an effective
minimization of current and voltage stresses on the
integrated CoolMOS™, the clamp circuit and the output
overshoot and prevents saturation of the transformer
during Start-Up.
t
Figure 11 Soft-Start Phase
The Soft-Start is realized by the internal pullup resistor
RSoft-Start and the external Capacitor CSoft-Start (see
Figure 2). The Soft-Start voltage VSoftS is generated by
charging the external capacitor CSoft-Start by the internal
Datasheet
11 August 2002

11 Page







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