- 您现在的位置：买卖IC网 > Sheet目录343 > MIC4102YM (Micrel Inc)IC DRIVER MOSFET 100V TTL 8SOIC
Micrel, Inc.
MIC4102
Current in the high-side driver is sourced from capacitor
C B and flows into the HB pin and out the HO pin, into
the gate of the high side MOSFET. The return path for
the current is from the source of the MOSFET and back
to capacitor C B . The high-side circuit return path usually
does not have a low impedance ground plane so the
etch connections in this critical path should be short and
wide to minimize parasitic inductance. As with the low-
Charge C B through
internal diode when
HS pin is low
C Vdd
Vdd
HB
Low-side drive turn-off
current path
LO
Vss
_
side circuit, impedance between the MOSFET source
and the decoupling capacitor causes negative voltage
feedback which fights the turn-on of the MOSFET.
C B
HO
Level
shift
Q
Q
FF
PWM
It is important to note that capacitor CB must be placed
close to the HB and HS pins. This capacitor not only
provides all the energy for turn-on but it must also keep
High-side drive turn-off
current path
HS
LS
HB pin noise and ripple low for proper operation of the
high-side drive circuitry.
Low-side drive turn-on
current path
Figure 10. Turn-off Current Paths
The following circuit guidelines should be adhered to for
optimum circuit performance:
1. The Vcc and HB bypass capacitors must be
gnd C Vdd
plane
High-side drive turn-on
current path
C B
Vdd
HB
HO
HS
Level
shift
LO
Vss
_
Q
FF
Q
LS
PWM
gnd
plane
placed close to the supply and ground pins. It is
critical that the etch length between the high
side decoupling capacitor (C B ) and the HB & HS
pins be minimized to reduce lead inductance.
2. A ground plane should be used to minimize
parasitic inductance and impedance of the
return paths. The MIC4102 is capable of greater
than 3A peak currents and any impedance
between the MIC4102, the decoupling
capacitors and the external MOSFET will
degrade the performance of the driver.
3. Trace out the high di/dt and dv/dt paths, as
Figure 9. Turn-on Current Paths
Figure 10 shows the critical current paths when the
driver outputs go low and turn off the external
MOSFETs. Short, low impedance connections are
important during turn-off for the same reasons given in
the turn-on explanation. Current flowing through the
internal diode replenishes charge in the bootstrap
capacitor, CB.
shown in Figures 9 and 10 to minimize the etch
length and loop area for these connections.
Minimizing these parameters decreases the
parasitic inductance and the radiated EMI
generated by fast rise and fall times.
A typical layout of a synchronous Buck converter
power stage using the MIC4102 (Figure 11) is
shown in Figure 12.
November 2006
15
M9999-112806
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
MIC4103YM
IC MOSFET DRIVER 100V CMOS 8SOIC
MIC4124YME
IC MOSFET DRVR DUAL NONINV 8SOIC
MIC4128YMME
IC DRIVER MOSFET 1.5A DUAL 8MSOP
MIC4129YME
IC MOSFET DRIVER 6A INVERT 8SOIC
MIC4223YM
IC MOSFET DVR DUAL-INV 4A 8-SOIC
MIC4417YM4 TR
IC DRIVER MOSF LOW SIDE SOT143-4
MIC4420ZT
IC DRIVER MOSFET 6A LS TO-220-5
MIC4422AYN
IC DRIVER MOSFET 9A LS 8-DIP
相关代理商/技术参数
MIC4102YM TR
功能描述:功率驱动器IC 100V HalfBridge MOSFET Driver with Anti-Shoot-through Circuitry(Lead Free)
RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube
MIC4103
制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:100V Half Bridge MOSFET Drivers 3/2A Sinking/Sourcing Current
MIC4103_10
制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:100V Half Bridge MOSFET Drivers 3/2A Sinking/Sourcing Current
MIC4103YM
功能描述:功率驱动器IC 100V Half Bridge driver, 3/2A sink/Source Driver
RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube
MIC4103YM TR
功能描述:功率驱动器IC 100V Half Bridge driver, 3/2A sink/Source Driver
RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube
MIC4104
制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:100V Half Bridge MOSFET Drivers 3/2A Sinking/Sourcing Current
MIC4104YM
功能描述:功率驱动器IC 100V HalfBridge MOSFET Driver 3/2A SOURCE/SINK CURRENT TTL INPUT (Lead Free)
RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube
MIC4104YM TR
功能描述:功率驱动器IC 100V HalfBridge MOSFET Driver 3/2A SOURCE/SINK CURRENT TTL INPUT (Lead Free)
RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube