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参数资料
| 型号： | TOP223G-TL |
| 厂商： | Power Integrations |
| 文件页数： | 5/20页 |
| 文件大小： | 0K |
| 描述： | IC OFFLINE SWIT PWM OCP HV 8SMD |
| 标准包装： | 1,000 |
| 系列： | TOPSwitch®-II |
| 输出隔离： | 隔离 |
| 频率范围： | 90kHz ~ 110kHz |
| 输出电压： | 700V |
| 功率（瓦特）： | 25W |
| 工作温度： | -40°C ~ 150°C |
| 封装/外壳： | 8-SMD，鸥翼型 |
| 供应商设备封装： | 8-SMD |
| 包装： | 带卷 (TR) |
TOP221-227
VIN
VIN
DRAIN
0
VOUT
0
IOUT
0
1
2
? ? ?
8
1
2
? ? ?
8
1
VC
0
VC(reset)
1
2
8
1
2
8
1
IC
0
? ? ?
? ? ?
1
2
1
3
1
PI-2030-042397
Figure 6. Typical Waveforms for (1) Normal Operation, (2) Auto-restart, and (3) Power Down Reset.
compensated to minimize variation of the effective peak current
limit due to temperature related changes in output MOSFET
becomes regulated, V C regulation returns to shunt mode, and
normal operation of the power supply resumes.
R DS(ON) .
Overtemperature Protection
The leading edge blanking circuit inhibits the current limit
comparator for a short time after the output MOSFET is turned
on. The leading edge blanking time has been set so that current
spikes caused by primary-side capacitances and secondary-side
rectifier reverse recovery time will not cause premature
termination of the switching pulse.
The current limit can be lower for a short period after the leading
edge blanking time as shown in Figure 12. This is due to
dynamic characteristics of the MOSFET. To avoid triggering
the current limit in normal operation, the drain current waveform
should stay within the envelope shown.
Shutdown/Auto-restart
To minimize TOPSwitch power dissipation, the shutdown/
auto-restart circuit turns the power supply on and off at an auto-
restart duty cycle of typically 5% if an out of regulation
condition persists. Loss of regulation interrupts the external
current into the CONTROL pin. V C regulation changes from
shunt mode to the hysteretic auto-restart mode described above.
When the fault condition is removed, the power supply output
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 135 ° 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 C is regulated in hysteretic mode and a 4.7 V to
5.7 V (typical) sawtooth waveform is present on the CONTROL
pin 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 T ) during
start-up or hysteretic operation. Hysteretic operation occurs
during auto-restart and overtemperature 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 CD1 and I CD2 ). This current source is turned off during normal
operation when the output MOSFET is switching.
D
7/01
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TOP223P | 功能描述:交流/直流开关转换器 15W 85-265 VAC 25W100/115/230 VAC RoHS:否 制造商:STMicroelectronics 输出电压:800 V 输入/电源电压（最大值）:23.5 V 输入/电源电压（最小值）:11.5 V 开关频率:115 kHz 电源电流:1.6 mA 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:SSO-10 封装:Reel |
| TOP223PN | 功能描述:交流/直流开关转换器 15W 85-265 VAC 25W100/115/230 VAC RoHS:否 制造商:STMicroelectronics 输出电压:800 V 输入/电源电压（最大值）:23.5 V 输入/电源电压（最小值）:11.5 V 开关频率:115 kHz 电源电流:1.6 mA 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:SSO-10 封装:Reel |
| TOP223Y | 功能描述:交流/直流开关转换器 30W 85-265 VAC 50W100/115/230 VAC RoHS:否 制造商:STMicroelectronics 输出电压:800 V 输入/电源电压（最大值）:23.5 V 输入/电源电压（最小值）:11.5 V 开关频率:115 kHz 电源电流:1.6 mA 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:SSO-10 封装:Reel |
| TOP223YN | 功能描述:交流/直流开关转换器 30W 85-265 VAC 50W100/115/230 VAC RoHS:否 制造商:STMicroelectronics 输出电压:800 V 输入/电源电压（最大值）:23.5 V 输入/电源电压（最小值）:11.5 V 开关频率:115 kHz 电源电流:1.6 mA 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:SSO-10 封装:Reel |
| TOP223YP | 制造商:Power Integrations 功能描述:Swithed-Mode Power Supply Controller, Voltage Mode Type, 3 Pin, Plastic, SIP |
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