- 您现在的位置：买卖IC网 > Sheet目录325 > FAN7388MX (Fairchild Semiconductor)IC GATE DRIVER HALF BRIDG 20SOIC
Application Information
1. Protection Function
1.1 Under-Voltage Lockout (UVLO)
The high- and low-side drivers include under-voltage
lockout (UVLO) protection circuitry for each channel that
monitors the supply voltage (V DD ) and bootstrap capaci-
tor voltage (V BS1,2,3 ) independently. It can be designed
prevent malfunction when V DD and V BS1,2,3 are lower
than the specified threshold voltage. The UVLO hystere-
sis prevent chattering during power supply transitions.
1.2 Shoot-Through Prevention Function
The FAN7388 has shoot-through prevention circuitry
monitoring the high- and low-side control inputs. It can
be designed to prevent outputs of high and low side from
turning on at same time, as shown Figure 27 and 28.
HIN1,2,3/LIN1,2,3
LIN1,2,3/HIN1,2,3
Shoot-Through Prevent
HO1,2,3/LO1,2,3
After DT
LO1,2,3/HO1,2,3
After DT
FAN7388 Rev.00
Figure 27. Waveforms for Shoot-Through Prevention
HIN1,2,3/LIN1,2,3
LIN1,2,3/HIN1,2,3
Shoot-Through Prevent
HO1,2,3/LO1,2,3
After DT
LO1,2,3/HO1,2,3
FAN7388 Rev.00
Figure 28. Waveforms for Shoot-Through Prevention
? 2008 Fairchild Semiconductor Corporation
FAN7388 ? Rev.1.0.1
11
2. Operational Notes
The FAN7388 is a three half-bridge gate driver with
internal typically 120 ns dead-time for the three-phase
Brushless DC (BLDC) motor drive system, as shown in
Figure 1.
Figure 29 shows a switching sequence of 120 ? electrical
commutation for a three-phase BLDC motor drive system.
The waveforms are idealized: they assumed that the
generated back EMF waveforms are trapezoidal with flat
tops of sufficient width to produce constant torque when
the line currents are perfectly rectangular 120 ? electrical
degrees with the switching sequence as shown in Figure
29. The operating waveforms of the wye-connection
reveal that repeat every 60 electrical degrees, with each
60 ? segment being “commutated” to another phase, as
shown in Figure 29.
www.fairchildsemi.com
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
FAN73892MX
IC GATE DVR HALF BRDG 3PH 28SOIC
FAN7389MX
IC GATE-DRIVE 3PH HALFBRDG 24SOP
FAN73901M
IC GATE DRIVER HI/LOW SIDE 8SOIC
FAN7390M1X
IC DRIVER GATE HI/LO SIDE 14-SOP
FAN7392N
IC GATE DVR MONO HI/LO 14DIP
FAN73932M
IC GATE DVR HALF BRIDGE 8-SOIC
FAN73933MX
IC GATE DVR HALF BRIDGE 14-SOIC
FAN7393AMX
IC GATE DVR HALF BRIDGE 14SOIC
相关代理商/技术参数
FAN7389
制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:3-Phase Half-Bridge Gate-Drive IC
FAN7389_12
制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:3-Phase Half-Bridge Gate-Drive IC
FAN7389_13
制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:3-Phase Half-Bridge Gate-Drive IC
FAN73892
制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:3-Phase Half-Bridge Gate-Drive IC
FAN73892MX
功能描述:功率驱动器IC 3 Phase half bridge gate driver IC 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
FAN7389M
功能描述:功率驱动器IC 3Ch. Half Bridge Gate 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
FAN7389MX
功能描述:功率驱动器IC 3Ch. Half Bridge Gate 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
FAN7389MX1
功能描述:功率驱动器IC 3CH Half Bridge Gate 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
