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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)： | 3/12頁 |
| 文件大?。?/td> | 269K |
| 代理商： | STCC02-BD5 |
STCC02-BD5
3/12
The reset circuit senses the regulator voltage V
DD
. Its comparator with hysteresis achieves this task.
The /RST pin is high when V
DD
is higher than the high threshold V
H
= 4.25 V; and is low when the V
DD
decreases below the low threshold V
L
= 3.75 V.
The comparator output changes are filtered for a high immunity. When the reset is disabling (V
DD
>V
H
), the
/RST signal rises after the delay time T
UP
. This delay is set by an external capacitor C
UP
connected to the
DL
C
pin: T
UP
= 6 ms for C
UP
= 47 nF.
Whentheresetisenabling(V
DD
<V
L
),the/RSTsignalisfallingafteradelaytimeT
DW
thatisinternallysetat
40 μs when C
UP
= 47 nF.
I
The Zero Voltage Synchronization ZVS circuit
The Zero Voltage Synchronization ZVS circuit generates a low frequency clock using the AC line cycles
(20 ms on 50 Hz or 16.7 ms on 60 Hz). This clock allows the MCU to generate the cooking timings and to
reduce the magnetron inrush current by powering it on at the AC line peak voltage.
50μs
115μs
R
ZV
CC
CC
= 10 k ;V
= 15V; I
= 20 mA
V
ZVS
FALLING EDGE
RISING EDGE
V
TF
2V / div
40μs / div
The input pin SYN is an image of the mains voltage and is usually connected to the supply transformer
through a resistor R
ZV
.
The circuit is protected against fast line transients because its state change will act on the whole MCU
routines: a 30 μs filter is implemented giving a higher immunity to the MCU circuit.
SincetheZVSpinisconnectedtotheNonMaskableInterruptNMIorINT\oftheMCU,itsfallingedgeisthe
active counting event. The delay between the real Zero Crossing event and this ZVS falling edge depends
on the internal filtering time, the resistance R
ZV
, the transformer, the rectifier drop voltage V
F
, the V
CC
supply load and the temperature. The STCC02 contribution to this delay can be evaluated by measuring
the delay between its input voltage V
TF
and its output voltage V
ZVS
. When using V
F
= 0.8V, R
ZV
= 10 k
,
V
CC
= 15V, I
CC
= 20 mA, it is about 50 μs on rising voltage V
TF
and 115 μs on falling voltage V
TF
.
V
CC
V
DD
ZVS
V
TF
COM
100 k
500 k
25 k
SYN
20 μs Filter
R
ZV
AC
LINE
Q
S
2
S
1
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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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