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參數(shù)資料
| 型號(hào)： | STCC02 |
| 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(yè)數(shù)： | 4/12頁(yè) |
| 文件大?。?/td> | 269K |
| 代理商： | STCC02 |
STCC02-BD5
4/5
I
The Door closed detection circuit
The magnetron of the oven can be powered only if the door is closed in order to protect the oven user. This
safety feature is ensured mechanically by putting the door switch in series with the magnetron relay coil
supply.
For redundancy purpose, the Door Closed Detection CDD signal is also transmitted to the MCU. Since the
DS input detects the door state from an electromechanical switch, a spike suppressor is added to increase
its robustness. Its EMI immunity in off state (open door) is increased thanks to a 50k
pull down resistor
that maintains the DS signal in low state.
I
The magnetron relay coil driver
This robust driver interfaces a DC relay coil and an MCU output. The relay coil power is rated up to 1.2 W
for V
CC
= 12V.
Its output stage is made of a transistor and a demagnetization diode. The transistor's reference is to the
power ground COM and has a DC current rating of 100 mA. Its collector is connected to the outputs MAG
2
.
The diode is connected between the output pin MAG
2
and the Door Switch pin DS.
To enhance safety rules and to prevent any unventilated operation of the magnetron, the relay coil
magnetization is enabled by the fan conduction state that becomes a logic signal FAN
1
\.
Furthermore, its demagnetization node is connected to the door switch pin DS: when the oven door is
open, the coil of the magnetron relay is immediately disconnected from the relay supply V
CC
to switch off
these heating loads.
The boolean rule of the magnetron relay operation becomes:
(Magnetron relay ON) = DS.IN
2
.FAN
1
\.
V
CC
V
DD
C
DD
DS
Door Switch
EMI Filter
500
V
DD
100 k
50 k
V
DD
MAG
2
IN
3
FAN
1
DS
Demagnetizing Diode
Relay
Transistor
15 k
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| STCC02-BD5 | CONTROL CIRCUIT FOR HOME APPLIANCE MCU BASED APPLICATION |
| STD100NH02LT4 | TRANSISTOR | MOSFET | N-CHANNEL | 20V V(BR)DSS | 60A I(D) | TO-252AA |
| STD10N10-1 | TRANSISTOR | MOSFET | N-CHANNEL | 100V V(BR)DSS | 10A I(D) | TO-251 |
| STD10N10L | TRANSISTOR SMD MOSFET TO 252 D PAK |
| STD10N10L1 | TRANSISTOR | MOSFET | N-CHANNEL | 100V V(BR)DSS | 10A I(D) | TO-251 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| STCC02-BD5 | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:CONTROL CIRCUIT FOR HOME APPLIANCE MCU BASED APPLICATION |
| STCC02-E | 制造商:STMICROELECTRONICS 制造商全稱(chēng):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(kāi)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(kāi)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(chēng):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 |
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