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| 型號： | ICE2B765P |
| 英文描述： | ?max. Pout=130W. fop=67kHz. Vbreak=650V. TO220? |
| 中文描述： | ？最大。噘\u003d 130瓦。紈褲子弟\u003d 67kHz。 Vbreak \u003d?650V。的TO220？ |
| 文件頁數(shù)： | 11/25頁 |
| 文件大?。?/td> | 642K |
| 代理商： | ICE2B765P |
Datasheet
Preliminary Data
11
August 2001
Preliminary Specification
CoolSET
-F2
ICE2A765P
ICE2B765P
Functional Description
the Current-Limit Comparator cannot switch off the
gate drive.
3.5.2
Propagation Delay Compensation
In case of overcurrent detection by I
Limit
the shut down
of CoolMOS
is delayed due to the propagation delay
of the circuit and the CoolMOS
. This delay causes an
overshoot of the peak current I
which depends on
the ratio of dI/dt of the peak current (see Figure 14).
.
Figure 14
Current Limiting
The overshoot of Signal2 is bigger than of Signal1 due
to the steeper rising waveform.
A propagation delay compensation is integrated to
bound the overshoot dependent on dI/dt of the rising
primary current. That means the propagation delay
time between exceeding the internal current sense
threshold V
and the switch off of CoolMOS
is
compensated over temperature within a range of at
least (see Figure 16):
dI
R
Sense
0
×
≤
Figure 15
Dynamic Voltage Threshold V
csth
The propagation delay compensation is done by
means of a dynamic threshold voltage V
csth
(see Figure
15). In case of a steeper slope the detection of the
overcurrent take place earlier to compensate the
propagation delay. Every time when the internal
oscillator starts the switch on the threshold voltage V
starts at a certain level and rises until max. duty cycle
is reached. During the off time of the oscillaltor V
csth
decreases to the starting level.
E.g. I
= 0.5A with R
= 2 . Without propagation
delay compensation the current sense threshold is set
to a static voltage level V
csth
=1V. A current ramp of
dI/dt = 0.4A/μs, that means dV
Sense
/dt = 0.8V/μs, and a
propagation delay time of i.e. t
Propagation Delay
=180ns
leads then to a I
overshoot of 12%. By means of
propagation delay compensation the overshoot is only
about 2% (see Figure 16). So current limiting is now
capable in a very accurate way.
t
I
Sense
I
Limit
t
Propagation Delay
I
Overshoot1
I
peak1
Signal1
Signal2
I
Overshoot2
I
peak2
dt
dV
dt
Sense
peak
1
≤
t
V
csth
V
OSC
Signal1
Signal2
V
Sense
Propagation Delay
max. Duty Cycle
off time
t
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ICE2B765P2 | 功能描述:初級與次級側(cè) PWM 控制器 Off-Line SMPS Currnt Mode CTRLR 650V RoHS:否 制造商:ON Semiconductor 輸出端數(shù)量:1 開關(guān)頻率:250 KHz 工作電源電壓:- 0.3 V to + 28 V 最大工作溫度:+ 85 C 最小工作溫度:- 5 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Reel |
| ICE2B765P2BKSA1 | 制造商:Infineon Technologies AG 功能描述:Current Mode PWM Controller 650V 3A 6-Pin(6+Tab) TO-220 制造商:Infineon Technologies AG 功能描述:AC/DC COOLSET - Rail/Tube 制造商:Infineon Technologies AG 功能描述:IC OFFLINE CTRLR SMPS CM TO220 |
| ICE2B765PCKSA1 | 制造商:Infineon Technologies AG 功能描述:Current Mode PWM Controller 650V 7A 6-Pin(6+Tab) TO-220 制造商:Infineon Technologies AG 功能描述:IC OFFLINE CTRLR SMPS CM TO220 |
| ICE2B765PIN | 制造商:Infineon Technologies AG 功能描述: |
| ICE2BS01 | 功能描述:初級與次級側(cè) PWM 控制器 OFF-LINE SMPS CRRNT MODE CONTROLLER RoHS:否 制造商:ON Semiconductor 輸出端數(shù)量:1 開關(guān)頻率:250 KHz 工作電源電壓:- 0.3 V to + 28 V 最大工作溫度:+ 85 C 最小工作溫度:- 5 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Reel |
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