參數(shù)資料
型號(hào)： NCP1395A
廠商： ON SEMICONDUCTOR
英文描述： High Performance Resonant Mode Controller(高性能諧振模式控制器)
中文描述： 高性能諧振模式控制器（高性能諧振模式控制器）
文件頁(yè)數(shù)： 15/27頁(yè)
文件大?。?/td> 335K
代理商： NCP1395A
NCP1395A/B
http://onsemi.com
15
Finally, Two Circuit Versions, A and B:
The A and
B versions differ because of the following changes:
1. The startup thresholds are different, the A starts
to pulse for V
CC
= 12.8 V whereas the B pulses
for V
CC
= 10 V. The turn off levels are the
same, however. The A is recommended for
consumer products where the designer can use
an external startup resistor, whereas the B is
more recommended for industrial/medical
applications where a 12 V auxiliary supply
directly powers the chip.
2. The A version does not activate the softstart
upon release of the fast fault input. This is to let
the designer implement skip cycle. To the
opposite, the B version goes back to operation
upon the fast fault pin release via a softstart
sequence.
VoltageControlled Oscillator
The VCO section features a highspeed circuitry
allowing an internal operation from 100 kHz up to
2.0 MHz. However, as a division by two internally creates
the two Q and Qbar outputs, the final effective signal on
output A and B switches between 50 kHz and 1.0 MHz.
The VCO is configured in such a way that if the feedback
pin goes up, the switching frequency also goes up.
Figure 33 shows the architecture of this oscillator.
Vref
Vdd
Fmin
Rtm sets
Fmin for V(FB) < Vfb_off
Cint
Imin
+
0 to I_Fmax
IDT
FBinternal
max
Fsw
max
+
+
Clk
D
S
Q
Q
R
A
B
Vref
Vdd
Rdt sets
the deadtime
DT
Imin
Vdd
Fmax
Rtmax sets
the maximum Fsw
Vcc
FB
Rfb
20 k
+
+
Vfb < Vb_fault
start fault timer
Figure 33. Simplified VCO Architecture
Vb_fault
相關(guān)PDF資料
PDF描述
NCP1395B High Performance Resonant Mode Controller(高性能諧振模式控制器)
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NCP1400ASN50T1(中文) 100 mA, Fixed Frequency PWM Step-Up Micropower Switching Regulator(微功率固定頻率脈寬調(diào)制升壓直流-直流交換器)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
NCP1395ADR2G 功能描述:電壓模式 PWM 控制器 PWM CONTROLLER RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開(kāi)關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
NCP1395APG 功能描述:電壓模式 PWM 控制器 PWM CONTROLLER RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開(kāi)關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
NCP1395B 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:High Performance Resonant Mode Controller
NCP1395BDR2G 功能描述:電壓模式 PWM 控制器 PWM CONTROLLER RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開(kāi)關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
NCP1395BPG 功能描述:電壓模式 PWM 控制器 PWM CONTROLLER RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開(kāi)關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
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