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| 型号： | NCP1395ADR2G |
| 厂商： | ON Semiconductor |
| 文件页数： | 22/27页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR PWM VM 16-SOIC |
| 标准包装： | 1 |
| PWM 型： | 电压模式 |
| 输出数： | 2 |
| 频率 - 最大： | 1.11MHz |
| 占空比： | 52% |
| 电源电压： | 9.3 V ~ 20 V |
| 降压： | 无 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 包装： | 剪切带 (CT) |
| 其它名称： | NCP1395ADR2GOSCT |
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NCP1395A/B
Protection Circuitry
This resonant controller differs from competitors due to
its protection features. The device can react to various
inputs like:
? Fast events input: Like an overcurrent condition, a
need to shutdown (sleep mode) or a way to force a
controlled burst mode (skip cycle at low output
power): as soon as the input level exceeds 1.0 V
typical, pulses are immediately stopped. On the
A version, when the input is released, the controller
performs a clean startup sequence without soft ? start
unless the feedback voltage goes down below 0.6 V
Vdd
Itimer
during fault time (please see above for details). The
B version restarts with a soft ? start sequence.
? Slow events input: This input serves as a delayed
shutdown, where an event like a transient overload
does not immediately stopped pulses but start a timer.
If the event duration lasts longer than what the timer
imposes, then all pulses are disabled. The voltage on
the timer capacitor (pin 3) starts to decrease until it
reaches 1.0 V. The decrease rate is actually depending
on the resistor the user will put in parallel with the
capacitor, giving another flexibility during design.
Figure 48 depicts the architecture of the fault circuitry.
Ctimer
Ctimer
UVLO
Reset
+
+ -
1 = fault
0 = ok
ON/OFF +
-
Vref Fault
+
Vref
+
-
+
NINV
Rtimer
Output
Current
Image
VtimerON
VtimerOFF
1 = ok
0 = fault
-
Out
CC Regulation
Compensation
+
Vref Fault
+
1 = ok
0 = fault
Slow Fault
Reset
DRIVING
LOGIC
SS
Fast Fault
A
B
A
B
To FB
Fast
Input
Figure 48. This Circuit Combines a Slow and Fast Input for Improved Protection Features
http://onsemi.com
22
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相关代理商/技术参数 |
参数描述 |
|---|---|
| NCP1395APG | 功能描述:电压模式 PWM 控制器 PWM CONTROLLER RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| NCP1395B | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:High Performance Resonant Mode Controller |
| NCP1395BDR2G | 功能描述:电压模式 PWM 控制器 PWM CONTROLLER RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| NCP1395BPG | 功能描述:电压模式 PWM 控制器 PWM CONTROLLER RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| NCP1395D | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:High Performance Resonant Mode Controller |
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