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參數(shù)資料
| 型號(hào)： | VB029011Y |
| 英文描述： | HIGH VOLTAGE IGNITION COIL DRIVER POWER IC |
| 中文描述： | 高壓點(diǎn)火線圈驅(qū)動(dòng)功率集成電路 |
| 文件頁數(shù)： | 4/10頁 |
| 文件大?。?/td> | 88K |
| 代理商： | VB029011Y |
4/10
VB029 / VB029SP / VB029(011Y) / VB029(012Y)
1
PRINCIPLE OF OPERATION
The
VB029,
VB029(012Y)
are mainly intended as high voltage
power switch device driven by a logic level input and
interfaces directly to a high energy electronic ignition coil.
The inputV
of the
VB029, VB029SP,VB029(011Y)
VB029(012Y)
are fed from a low power signal
generated by an external controller that determines both
dwell time and ignition point. During V
high (
≥
4V) the
VB029, VB029SP, VB029(011Y) VB029(012Y)
increase current in the coil to the desired, internally set
current level.
VB029SP,
VB029(011Y)
When the collector current exceeds 4.5A, the diagnostic
signal is turned high and it remains so, until the load
current reaches 5.8A (second threshold). At that value,
the diagnostic signal is turned low, and the
μ
C forces the
V
IN
to the low state. During the coil currentswitch-off, the
primary voltage HV
C
is clamped by a series of Zener
diodes at an internally set value V
cl
, typically 360V.
The collector currentsensed throughthe R
sense
, is limited
thanks to the“Current limiter” blockthat, as soon as theI
cl
level is reached, forces the darlington (using the “Driver”
block) to limit the current provided.
The transition from saturation to desaturation, coil current
limiting phase, must have the ability to accommodate an
overvoltage. A maximum overshoot of 20V is allowed.
There can be some short period of time in which the
output pin (HV
C
) is pulled below ground by a negative
current
due
to
leakage
capacitances of the ignition coil. This can cause parasitic
glitches on the diagnostic output.
VB029, VB029SP,
VB029(011Y) VB029(012Y)
have a built-in protection
circuit that allows to lock thep-buried layerpotential of the
linear stage to the collector power, when the last one is
pulled underground.
inductances
and
stray
THERMAL BEHAVIOUR
You can see in the block diagram of the
VB029,
VB029SP, VB029(011Y) VB029(012Y)
a box called
overtemperature protection. The purpose of this circuit is
to shift the current level at which the first diagnostic is
activated down of about 1A.
This information can be managed by the micro that can
take the corrective action in order to reduce the power
dissipation. This block is not an effective protection but
just an overtemperature detection. The shift down of the
first flag level cannot be present for temperatures lower
than 125
°
C.
As an example of its behavior you can suppose a very
simple motor management system in which the micro
does just a simple arithmetic calculation to decide when to
switch-off the device after thefirst flag threshold.
EXAMPLE:
I
C(DIAG1)
info after x ms (I
C(DIAG1)
=2.5A)
I
switch-off
info after kx ms.
As soon as the temperature rises over the overtemp
threshold, the first diagnostic is shifted down to about
1.5A and, in this example, the switch-off current will be
kx*1.5 / 2.5.
OVERVOLTAGE
The
VB029(012Y)
can withstand the following transients of
the battery line:
-100V /2ms (R
i
=10
)
+100V /0.2ms (R
i
=10
)
+50V / 400ms (R
i
=4.2
,
with V
IN
=3V)
VB029,
VB029SP,
VB029(011Y)
FIGURE 1:
Application circuit
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| VB029(012Y) | Shielded Paired Cable; Number of Conductors:8; Conductor Size AWG:18; No. Strands x Strand Size:19 x 30; Jacket Material:Polyvinylchloride (PVC); Number of Pairs:4; Voltage Nom.:600V RoHS Compliant: Yes |
| VB029 | HIGH VOLTAGE IGNITION COIL DRIVER POWER I.C. |
| VB029SP | HIGH VOLTAGE IGNITION COIL DRIVER POWER I.C. |
| VB125SP | High Voltage Ignition Coil Driver Power IC(高壓點(diǎn)火線圈驅(qū)動(dòng)器) |
| VB244 | OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| VB029012Y | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:HIGH VOLTAGE IGNITION COIL DRIVER POWER IC |
| VB029-E | 功能描述:電源開關(guān) IC - 配電 AED Vipower High Volt IN LINE RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時(shí)間（最大值）:400 us 關(guān)閉時(shí)間（最大值）:20 us 工作電源電壓:3.2 V to 6.5 V 電源電流（最大值）: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
| VB029SP | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:HIGH VOLTAGE IGNITION COIL DRIVER POWER I.C. |
| VB029SP6 | 功能描述:交流/直流開關(guān)轉(zhuǎn)換器 VIPOWER RoHS:否 制造商:STMicroelectronics 輸出電壓:800 V 輸入/電源電壓（最大值）:23.5 V 輸入/電源電壓（最小值）:11.5 V 開關(guān)頻率:115 kHz 電源電流:1.6 mA 工作溫度范圍:- 40 C to + 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SSO-10 封裝:Reel |
| VB029SP613TR | 功能描述:交流/直流開關(guān)轉(zhuǎn)換器 VIPOWER RoHS:否 制造商:STMicroelectronics 輸出電壓:800 V 輸入/電源電壓（最大值）:23.5 V 輸入/電源電壓（最小值）:11.5 V 開關(guān)頻率:115 kHz 電源電流:1.6 mA 工作溫度范圍:- 40 C to + 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SSO-10 封裝:Reel |
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