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| 型号： | MCP14E8-E/P |
| 厂商： | Microchip Technology |
| 文件页数： | 13/30页 |
| 文件大小： | 0K |
| 描述： | IC MOSFET DRIVER 2A 8PDIP |
| 标准包装： | 60 |
| 配置： | 低端 |
| 输入类型： | 反相和非反相 |
| 延迟时间： | 45ns |
| 电流 - 峰： | 2A |
| 配置数： | 2 |
| 输出数： | 2 |
| 电源电压： | 4.5 V ~ 18 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 8-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 8-PDIP |
| 包装： | 管件 |
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MCP14E6/7/8
4.0
APPLICATION INFORMATION
4.1 General Information
MOSFET drivers are high-speed, high-current devices
which are intended to source/sink high-peak currents to
charge/discharge the gate capacitance of external
MOSFETs, or insulated gate bipolar transistors
(IGBTs). In high-frequency switching power supplies,
Input
V DD = 18V
1 μF
0.1 μF
Ceramic
Output
C L = 1000 pF
the Pulse-Width Modulation (PWM) controller may not
have the drive capability to directly drive the power
MOSFET. MOSFET drivers, like the MCP14E6/7/8
family, can be used to provide additional source/sink
Input
MCP14E6
? MCP14E8
Output
C L = 1000 pF
current capability.
An additional degree of control has been added to the
MCP14E6/7/8 family. There are seperate enable func-
tions for each driver that allow for the immediate termi-
nation of the output pulse, regardless of the state of the
input signal.
+5V
Input
0V
10%
90%
t D 2
4.2 MOSFET Driver Timing
The ability of a MOSFET driver to transition from a fully
OFF state to a fully ON state are characterized by the
18V
Output
0V
t D1 90%
10%
t R
90%
10%
t F
drivers’ rise time (t R ), fall time (t F ) and propagation
delays (t D1 and t D2 ). The MCP14E6/7/8 family of drivers
can typically charge and discharge a 1000 pF load
capacitance, in approximately 12 ns, along with a typical
FIGURE 4-2:
Waveform
Non-Inverting Driver Timing
matched propagation delay of 45 ns. Figure 4-1 and
Figure 4-2 show the test circuit and timing waveform
used to verify the MCP14E6/7/8 timing.
V DD = 18V
4.3 Enable Function
The ENB_A and ENB_B enable pins allow the indepen-
dent control of OUT A and OUT B, respectively. They
are active-high and are internally pulled up to V DD so
that the default state is to enable the driver. These pins
Input
1 μF
0.1 μF
Ceramic
Output
C L = 1000 pF
can be left floating for normal operation.
When an enable pin voltage is above enable pin high
threshold voltage, (V EN_H ), that driver output is enabled
and allowed to react to changes in the INPUT pin volt-
age state. Similarly, when the enable pin voltage falls
below the enable pin low threshold voltage, (V EN_L ),
that driver output is disabled and does not respond to
Input
MCP14E6
? MCP14E8
Output
C L = 1000 pF
the changes in the INPUT pin voltage state. When the
driver is disabled, the output goes to a low state. Refer
to Table 4-1 for enable pin logic. The threshold voltages
of the enable function are compatible with logic levels.
Hysteresis is provided to help increase the noise immu-
+5V
Input
90%
nity of the enable function, avoiding false triggers of the
enable signal during driver switching. For robust
designs, it is recommended that the slew rate of the
0V 10%
18V
Output
0V
t D1
t F
90%
10%
t D2
t R
90%
10%
enable pin signal be greater than 1V/ns.
There are propagation delays associated with the
driver receiving an enable signal and the output
reacting. These propagation delays, t D3 and t D4 , are
graphically represented in Figure 4-3 .
FIGURE 4-1:
Waveform.
Inverting Driver Timing
? 2011 Microchip Technology Inc.
DS25006A-page 13
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| MCP14E8T | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:2.0A Dual High-Speed Power MOSFET Driver With Enable |
| MCP14E8T-E/MF | 功能描述:功率驱动器IC 3A MOSFET 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 |
| MCP14E8T-E/SN | 功能描述:功率驱动器IC 3A MOSFET 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 |
| MCP14E9 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:3.0A Dual High-Speed Power MOSFET Driver With Enable |
| MCP14E9-E/MF | 功能描述:功率驱动器IC 2A MOSFET 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 |
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