参数资料
型号: NCP1395ADR2G
厂商: ON Semiconductor
文件页数: 20/27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:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
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
NCP1395A/B
4.00
3.00
2.00
1.00
0
16.0
12.0
8.00
4.00
0
8.00
4.00
0
? 4.00
? 8.00
1 vct
2 clock
5 difference
1
2
5
56.2u
65.9u
75.7u
time in seconds
85.4u
95.1u
Figure 44. Typical Oscillator Waveforms
Brown ? Out Protection
The Brown ? Out circuitry (BO) offers a way to protect the
resonant converter from low DC input voltages. Below a
given level, the controller blocks the output pulses, above
it, it authorizes them. The internal circuitry, depicted by
Figure 42, offers a possibility to observe the high ? voltage
450 16.0
(HV) rail. A resistive divider made of Rupper and Rlower,
brings a portion of the HV rail on pin 7. Below the turn ? on
level, a current source IBO is off. Therefore, the turn ? on
level solely depends on the division ratio brought by the
resistive divider.
1 vin 2 vcmp
351 volts
Vbulk
Vdd
350 12.0
250 volts
Rupper
IBO
BO
ON/OFF
+
?
BO
250
8.00
150 4.00
Vin
Rlower
+
VBO
50.0
0
BO
2
Figure 45. The Internal Brown ? Out
20.0u
60.0u
100u
time in seconds
140u
180u
1
Configuration with an Offset Current Source
Figure 46. Simulation Results for 350/250 ON/OFF Levels
http://onsemi.com
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