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參數(shù)資料
| 型號： | STCC02-BD5 |
| 英文描述： | CONTROL CIRCUIT FOR HOME APPLIANCE MCU BASED APPLICATION |
| 中文描述： | 控制電路中的應(yīng)用用于家電MCU的 |
| 文件頁數(shù)： | 9/12頁 |
| 文件大小： | 269K |
| 代理商： | STCC02-BD5 |
STCC02-BD5
9/12
APPLICATION RECOMMENDATIONS
I
EVALUATION OF THE STCC02 DISSIPATION IN ITS APPLICATION
In order to define accurately at which maximum input supply voltage the STCC02 can work safely, the
dissipated power has to be evaluated. Indeed, the STCC02 device can withstand voltages up to 30V, as
specified in the "ABSOLUTE RATINGS" section.
However, when the V
IN
voltage is high, it will also increase the power dissipation P
DIS
and the junction
temperature T
J
of the whole circuit.
For the evaluation of the maximum junction temperature, the following equation should be used to
calculate dissipated power:
(
)
P
V
V
I
V
I
V
I
I
I
DIS
IN
DD
DD
IN
Q
ON
M
FAN
M
MAG
M
BUZ
=
×
+
+
×
+
+
@
@
@
1
2
(
)
3
Indeed, the power dissipation is mainly due to the regulator and to the currents sunk by the three driver
outputs FAN
1
, MAG
2
, and BUZ
3
.
Furthermore, the input voltage V
IN
is linked to the relays conduction in most applications. When the relay
coilsaredriven,thestoragesupplycapacitorisdischargedandV
IN
isnolongerequaltothepeakvoltageof
the transformer secondary winding. In this case, V
IN
should approach the average value of the secondary
voltage. This value is then approximately 36% lower that in stand-by operation, as explained by the
following equation:
(
)
(
)
V
relays on
V
relays off
IN
IN
_
_
≈
×
2
π
When the relays are off, the dissipation losses formula is:
(
)
P
V
V
I
V
I
DIS
IN
DD
DD
IN
Q
=
×
+
×
For instance if V
IN
= 27V, V
DD
= 5V, I
Q
= 2.5mA, I
DD
= 20mA, the dissipated power in the STCC02 is
evaluated at 0.51W.
When the relays are on, the full formula of the dissipation losses is applied. For instance in the same AC
line conditions with the relays on, V
IN
drops down to 17.5V. Considering I
M BUZ3
= 10mA, I
M FAN1
= I
M MAG2
=
100mA and V
ON
= 1.5V, the dissipated power in the STCC02 becomes 0.61W.
The maximum junction temperature is given by:
T
T
R
P
J
AMB
th j
a
DIS
max
max
(
)
=
+
×
The maximum allowed input supply voltage is then chosen in order to keep the junction temperature below
its maximum operating value 150°C.
Since the maximum junction temperature is 150°C, the maximum ambient temperature T
AMB
is 85°C in this
application, and the thermal resistance is 100°C/W, the maximum allowed dissipation becomes 0.65 W.
The two dissipation cases described above are compatible with the package dissipation capability.
Otherwise, the ambient temperature T
AMB
, the input voltage V
IN
or the load current I
DD
should limited by
design to meet the circuit thermal requirements.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| STCC02-E | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:CONTROL CIRCUIT FOR HOME APPLIANCE MCU BASED APPLICATION |
| STCC02-ED5 | 功能描述:雙向可控硅 CONTROL CIRCUIT RoHS:否 制造商:STMicroelectronics 開啟狀態(tài) RMS 電流 (It RMS):16 A 不重復(fù)通態(tài)電流:120 A 額定重復(fù)關(guān)閉狀態(tài)電壓 VDRM:600 V 關(guān)閉狀態(tài)漏泄電流（在 VDRM IDRM 下）:5 uA 開啟狀態(tài)電壓: 保持電流（Ih 最大值）:45 mA 柵觸發(fā)電壓 (Vgt):1.3 V 柵觸發(fā)電流 (Igt):1.75 mA 最大工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:TO-220AB |
| STCC05-B | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:HOME APPLIANCE CONTROL CIRCUIT |
| STCC05-BD4 | 功能描述:PMIC 解決方案 Home App Control Cir RoHS:否 制造商:Texas Instruments 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
| STCC08 | 功能描述:開關(guān) IC - 各種 AC switch failure mode detector RoHS:否 制造商:Fairchild Semiconductor 開啟電阻（最大值）: 電源電壓-最大:4.4 V 電源電壓-最小:2.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:WLCSP-9 封裝:Reel |
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