参数资料
| 型号： | NCP1393BDR2G |
| 厂商： | ON Semiconductor |
| 文件页数： | 9/16页 |
| 文件大小： | 0K |
| 描述： | IC HALF BRIDGE DVR HV OSC 8SOIC |
| 标准包装： | 2,500 |
| 类型： | 半桥 |
| 输入类型： | 非反相 |
| 输出数： | 2 |
| 电流 - 峰值输出： | 1A |
| 电源电压： | 16V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOICN |
| 包装： | 带卷 (TR) |
NCP1393B
APPLICATION INFORMATION
The NCP1393 is primarily intended to drive low cost
half ? bridge applications and especially resonant
half ? bridge applications. The IC includes several features
that help the designer to cope with resonant SPMS design.
All features are described thereafter:
? Wide Operating Frequency Range : The internal
current controlled oscillator is capable to operate over
wide frequency range up to 250 kHz. Minimum
frequency accuracy is $ 3%.
? Fixed Dead ? Time : The internal dead ? time helping to
fight with cross conduction between the upper and
lower power transistors. Three versions with different
dead ? time values are available to cover wide range of
applications.
? 100 ms PFC Timer : Fixed delay is placed to IC
operation whenever the driver restarts (VCC ON or
BO_OK detect events). This delay assures that the bulk
voltage will be stabilized in the time the driver provides
pulses on the outputs. Another benefit of this delay is
that the soft start capacitor will be full discharged
before any restart.
? Brown ? Out Detection : The BO input monitors bulk
voltage level via resistor divider and thus assures that
the application is working only for wanted bulk voltage
band. The BO input sinks current of 18.2 m A until the
Vref BO threshold is reached. Designer can thus adjust
the bulk voltage hysteresis according to the application
needs.
V DD
? Latched Input : The latched comparator input is
connected in parallel to the BO terminal to allow the
designer latch the IC if necessary ? overvoltage or
overtemperature can thus be easily connected. The
supply voltage has to be cycled down below VCC reset
threshold, or V BO diminished under V BO level to
enable another start attempt.
? Internal V CC Clamp : The internal zener clamp offers
a way to prepare passive voltage regulator to maintain
V CC voltage at 16 V in case the controller is supplied
from unregulated power supply or from bulk capacitor.
? Low Startup Current : This device features maximum
startup current of 50 m A which allows the designer to
use high value startup resistor for applications when
driver is supplied from the auxiliary winding. Power
dissipation of startup resistor is thus significantly
reduced.
Current Controlled Oscillator
The current controlled oscillator features a high ? speed
circuitry allowing operation from 50 kHz up to 500 kHz.
However, as a division by two internally creates the two Q
and Q outputs, the final effective signal on output Mlower
and Mupper switches between 25 kHz and 250 kHz. The
VCO is configured in such a way that if the current that flows
out from the Rt pin increases, the switching frequency also
goes up. Figure 21 shows the architecture of this oscillator.
S
D
Q
A
R soft ? start
R t
+
?
+
?
V ref Rt
C t
I DT
+
?
V ref
+
?
CLK
R
Q
B
Dead
Time
C soft ? start
R t
Delay
From PFC Delay
PON Reset
Figure 21. The Internal Current Controlled Oscillator Architecture
http://onsemi.com
9
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| NCP1395 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:Power Factor Controllers |
| NCP1395A | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:High Performance Resonant Mode Controller |
| NCP1395ADR2G | 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 |
| 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 |
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