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參數資料
| 型號： | TOP102YAI |
| 英文描述： | Analog IC |
| 中文描述： | 模擬IC |
| 文件頁數： | 5/20頁 |
| 文件大?。?/td> | 166K |
| 代理商： | TOP102YAI |
E
7/96
TOP100-4
5
PI-1119-110194
VIN
VOUT
0
IOUT
0
1
2
1
4
3
DRAIN
0
VIN
VC
0
1
2
1
2
8
1
0
IC
1
2
8
8
1
2
8
1
VC(reset)
45 mA
Shutdown/Auto-restart
To minimize
TOPSwitch
power
dissipation, the shutdown/auto-restart
circuit turns the power supply on and off
at a duty cycle of typically 5% if an out
of regulation condition persists. Loss of
regulation interrupts the external current
into the CONTROL pin. V
regulation
changes from shunt mode to the
hysteretic auto-restart mode described
above. When the fault condition is
removed, the power supply output
becomes regulated, V
regulation returns
to shunt mode, and normal operation of
the power supply resumes.
Latching Shutdown
The output overvoltage protection latch
is activated by a high-current pulse into
the CONTROL pin. When set, the latch
turns off the
TOPSwitch
output.
Activating the power-up reset circuit by
removing and restoring input power, or
momentarily pulling the CONTROL pin
below the power-up reset threshold resets
the latch and allows
TOPSwitch
to
resume normal power supply operation.
V
is regulated in hysteretic mode when
the power supply is latched off.
Overtemperature Protection
Temperature protection is provided by a
precision analog circuit that turns the
output MOSFET off when the junction
temperature exceeds the thermal
shutdown temperature (typically 145
°
C).
Activating the power-up reset circuit by
removing and restoring input power or
momentarily pulling the CONTROL pin
below the power-up reset threshold resets
the latch and allows
TOPSwitch
to
resume normal power supply operation.
V
is regulated in hysteretic mode when
the power supply is latched off.
High-voltage Bias Current Source
This current source biases
TOPSwitch
from the DRAIN pin and charges the
CONTROL pin external capacitance
(C
) during start-up or hysteretic
operation. Hysteretic operation occurs
during auto-restart and latched
shutdown. The current source is switched
on and off with an effective duty cycle of
approximately 35%. This duty cycle is
determined by the ratio of CONTROL
pin charge (I
C
) and discharge currents
(I
and I
). This current source is
turned off during normal operation when
the output MOSFET is switching.
Figure 6. Typical Waveforms for (1) Normal Operation, (2) Auto-restart, (3) Latching Shutdown, and (4) Power Down Reset.
相關PDF資料 |
PDF描述 |
|---|---|
| TOP102YAI* | 0-60 W TOPSwitch using a 100/110 VAC input |
| TOP103YAI | Analog IC |
| TOP103YAI* | 0-60 W TOPSwitch using a 100/110 VAC input |
| TOP104YAI* | 0-60 W TOPSwitch using a 100/110 VAC input |
| TOP10YAI | T1/E1 Transformer |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TOP102YI | 制造商:POWERINT 制造商全稱:Power Integrations, Inc. 功能描述:Three-terminal Off-line PWM Switch |
| TOP102YN | 功能描述:交流/直流開關轉換器 20-45 W 100/110 VAC 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 安裝風格:SMD/SMT 封裝 / 箱體:SSO-10 封裝:Reel |
| TOP103YA | 制造商:POWERINT 制造商全稱:Power Integrations, Inc. 功能描述:Three-terminal Off-line PWM Switch |
| TOP103YAI | 功能描述:交流/直流開關轉換器 25-55 W 100/110 VAC 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 安裝風格:SMD/SMT 封裝 / 箱體:SSO-10 封裝:Reel |
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