參數(shù)資料
型號(hào)： IRS20955SPBF
廠商： International Rectifier
英文描述： PROTECTED DIGITAL AUDIO DRIVER
中文描述： 受保護(hù)的數(shù)字音頻驅(qū)動(dòng)程序
文件頁數(shù)： 18/21頁
文件大小： 524K
代理商： IRS20955SPBF
IRS20955
(
S
)
PbF
PRELIMINARY
www.irf.com
18
4. P
LSH
: Power Dissipation of the High-Side
Level Shifter
P
LSH
= 0.4 nC x f
sw
x V
BUS
where
f
SW
= the PWM switching frequency
V
BUS
= the difference between the positive bus
voltage and negative bus voltage
5. P
HIGH
: Power Dissipation in High-side
The power dissipation in high-side comes from
the losses of the logic circuitry and the losses of
driving LO.
+
=
HO
LDD
HIGH
P
P
P
(
)
+
+
+
=
(int)
g
g
O
O
SW
g
BS
BS
QBS
R
R
R
R
f
Q
V
V
I
where
P
LDD
= the power dissipation from the internal
logic circuitry
P
LO
= the power dissipation from the gate drive
stage to HO
R
O
= equivalent output impedance of HO,
typically 10
for the IRS20955S
R
g(int)
= the internal gate resistance of the high-
side MOSFET driver, typically 10
for the
IRS20955S
R
g
= external gate resistance of the high-side
MOSFET
Q g = total gate charge of the high- side
MOSFET
Total power dissipation, P
d
, is given by
HIGH
P
HSM
P
LOW
P
LSM
P
MID
P
d
P
+
+
+
+
=
.
Given R
th,JA
, the thermal resistance between the
ambient and junction temperature, T
J
, the junction
temperature,
can be calculated from the formula
provided below.
P
R
T
d
JA
th
J
,
C
T
A
°
<
+
=
150
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
IRS20955STRPBF 功能描述:功率驅(qū)動(dòng)器IC 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
IRS20957SPBF 功能描述:功率驅(qū)動(dòng)器IC Prot DIG Audio DRVR 100V 1.0A 500ns 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
IRS20957SPBF 制造商:International Rectifier 功能描述:IC MOSFET DRIVER HIGH-SPEED SOIC-16 制造商:International Rectifier 功能描述:IC, MOSFET DRIVER, HIGH-SPEED, SOIC-16
IRS20957STRPBF 功能描述:功率驅(qū)動(dòng)器IC Class D Aud Drvr IC 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
IRS2101PBF 功能描述:功率驅(qū)動(dòng)器IC Hi&Lw Sd Drvr 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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