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參數(shù)資料
| 型號(hào)： | L6571 |
| 英文描述： | HIGH VOLTAGE HALF BRIDGE DRIVER WITH OSCILLATOR |
| 中文描述： | 高壓半橋驅(qū)動(dòng)器，振蕩器 |
| 文件頁數(shù)： | 4/8頁 |
| 文件大?。?/td> | 130K |
| 代理商： | L6571 |
L6571A L6571B
4/8
OSCILLATOR FREQUENCY
The frequency of the internal oscillator can be programmed using external resistor and capacitor.
The nominal oscillator frequency can be calculated using the following equation:
Where R
F
and C
F
are the external resistor and capacitor.
The device can be driven in "shut down" condition keeping the C
F
pin close to GND, but some cares have to be
taken:
1. When C
F
is to GND the high side driver is off and the low side is on
2. The forced discharge of the oscillator capacitor C
F
must not be shorter than 1us: a simple way to do this is to
limit the current discharge with a resistive path imposing R · C
F
>1
μ
s (see fig.1)
Figure 1.
Figure 2. Waveforms
DC
Duty Cycle, Ratio Between Dead
Time + Conduction Time of High
Side and Low Side Drivers
0.45
0.5
0.55
I
AVE
1
Average Current from Vs
No Load, fs = 60KHz
1.2
1.5
mA
f
out
6
Oscillation Frequency
R
T
= 12K; C
T
= 1nF
57
60
63
kHz
Symbol
Pin
Parameter
Test Condition
Min.
Typ.
Max.
Unit
f
OSC
2 R
F
C
F
In2
----------------------------------------
1.3863 R
F
C
F
-----------------------------------------
=
=
R
F
C
F
GND
M
1
2
3
4
8
7
6
5
fault signal
R
T1
T
C
V
S
V
CF
LVG
D96IN434
V
SUVP
ELECTRICAL CHARACTERISTCS
(continued)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6571A | 功能描述:功率驅(qū)動(dòng)器IC Hi-Volt Half Bridge RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時(shí)間: 下降時(shí)間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| L6571A | 制造商:STMicroelectronics 功能描述:HALF BRIDGE+OSC+DDTIM 6571 DIP8 |
| L6571A_0009 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:HIGH VOLTAGE HALF BRIDGE DRIVER WITH OSCILLATOR |
| L6571AD | 功能描述:功率驅(qū)動(dòng)器IC Hi-Volt Half Bridge RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時(shí)間: 下降時(shí)間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| L6571AD013TR | 功能描述:功率驅(qū)動(dòng)器IC Hi-Volt Half Bridge RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時(shí)間: 下降時(shí)間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
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