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參數(shù)資料
| 型號(hào)： | NCP1013ST130T3 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Self-Supplied Monolithic Switcher for Low Standby- Power Offline SMPS |
| 中文描述： | 1 A SWITCHING REGULATOR, 143 kHz SWITCHING FREQ-MAX, PSSO4 |
| 封裝： | PLASTIC, SOT-223, 4 PIN |
| 文件頁(yè)數(shù)： | 11/24頁(yè) |
| 文件大?。?/td> | 324K |
| 代理商： | NCP1013ST130T3 |
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NCP1010, NCP1011, NCP1012, NCP1013, NCP1014
http://onsemi.com
11
Figure 16. NCP101X Facing a Fault Condition (Vin = 150 Vdc)
Tstart
Tsw
TLatch
1 V Ripple
Latchoff
Level
The rising slope from the latchoff level up to 8.5 V
is expressed by:
Tstart
IC1
the IC actually pulses is given by
tsw
Finally,
the
latchoff
using the same formula topology:
TLatch
From these three definitions, the burst dutycycle
can be computed:
dc
Tstart
dc
ICC1 ·
ICC1
IC1
ICC2
equation with values extracted from the parameter section
gives a typical dutycycle of 13%, precluding any lethal
thermal runaway while in a fault condition.
V1 · C
. The time during which
V2 · C
ICC1
derived
V3 · C
ICC2
.
time
can
be
.
Tsw
Tsw
TLatch
Feeding
(eq. 2)
.
V2
V2
V1
V3
(eq. 3)
.
the
DSS Internal Dissipation
The Dynamic SelfSupplied pulls energy out from the
drain pin. In Flybackbased converters, this drain level can
easily go above 600 V peak and thus increase the stress on the
DSS startup source. However, the drain voltage evolves with
time and its period is small compared to that of the DSS. As
a result, the averaged dissipation, excluding capacitive losses,
can be derived by:
PDSS
Figure 17 portrays a typical drainground waveshape where
leakage effects have been removed.
ICC1 ·
Vds(t)
.
(eq. 4)
.
Figure 17. A typical drainground waveshape
where leakage effects are not accounted for.
Vds(t)
Vin
Vr
toff
dt
ton
t
Tsw
By looking at Figure 17, the average result can easily be
derived by additive square area calculation:
Vds(t)
Vin · (1
d)
Vr ·Tsw
(eq. 5)
By developing Equation 5, we obtain:
Vds(t)
Vin
Vin ·Tsw
Vr ·Tsw
(eq. 6)
toff can be expressed by:
toff
Ip ·Lp
Vr
(eq. 7)
where ton
can be evaluated by:
ton
Ip ·
Lp
Vin
(eq. 8)
.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| NCP1013ST130T3G | 功能描述:電流型 PWM 控制器 Low Standby Power Monolithic Switcher RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| NCP1013ST65T3 | 功能描述:電流型 PWM 控制器 Low Standby Power RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| NCP1013ST65T3G | 功能描述:電流型 PWM 控制器 Low Standby Power Monolithic Switcher RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| NCP1014 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Self-Supplied Monolithic Switcher for Low Standby- Power Offline SMPS |
| NCP1014/D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Self-Supplied Monolithic Switcher for Low Standby-Power Offline SMPS |
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