参数资料
型号: FDMF6707C
厂商: Fairchild Semiconductor
文件页数: 13/18页
文件大小: 0K
描述: MODULE DRMOS 50A 40-PQFN
标准包装: 3,000
系列: XS™ DrMOS
类型: 高端/低端驱动器
输入类型: PWM
输出数: 1
电流 - 输出 / 通道: 50A
电源电压: 4.5 V ~ 5.5 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 40-PowerTFQFN
供应商设备封装: 40-PQFN(6x6)
包装: 带卷 (TR)
Skip Mode (SMOD)
The SMOD function allows higher converter efficiency
under light-load conditions. During SMOD, the low-side
FET gate signal is disabled (held LOW), preventing
Table 2.
DISB#
SMOD Logic
PWM SMOD#
GH
GL
discharging of the output capacitors as the filter inductor
current attempts reverse current flow – also known as
Diode Emulation Mode.
When the SMOD# pin is pulled HIGH, the synchronous
buck converter works in Synchronous Mode. This mode
allows for gating on the low-side FET. When the
SMOD# pin is pulled LOW, the low-side FET is gated
off. If the SMOD# pin is connected to the PWM
0
1
1
1
1
1
X
3-State
0
1
0
1
X
X
0
0
1
1
0
0
0
1
0
1
0
0
0
0
1
0
controller, the controller can actively enable or disable
SMOD when the controller detects light-load condition
from output current sensing. This pin is active LOW.
See Figure 26 for timing delays .
Note:
4. The SMOD feature is intended to have low
propagation delay between the SMOD signal and
the low-side FET V GS response time to control
diode emulation on a cycle-by-cycle basis.
SMOD#
V IH_SMOD
V IL_SMOD
V IH_PWM
PWM
GH
V IL_PWM
90%
V IH_PWM
to
VSWH
10%
10%
2.2V
CCM
CCM
DCM
V OUT
VSWH
GL
90%
1.0V
10%
10%
t PD_PHGLL
t D_DEADON
t PD_PLGHL
t D_DEADOFF
t PD_SLGLL
Delay from SMOD# going
t PD_PHGHH
t PD_SHGLH
Delay from SMOD# going
LOW to LS V GS LOW
HS turn -on with SMOD# LOW
HIGH to LS V GS HIGH
? 2011 Fairchild Semiconductor Corporation
FDMF6707C ? Rev. 1.0.2
Figure 26.
SMOD Timing Diagram
13
www.fairchildsemi.com
相关PDF资料
PDF描述
FDMF6707V MODULE DRMOS 50A 40-PQFN
FDMF6708N MODULE DRMOS 50A 40PQFN
FDMF6730 IC DRIVER FET MULTICHIP 40-MLP
FDMF6820A MODULE DRMOS 60A 40-PQFN
FDMF6820B MODULE DRMOS 55A 40-PQFN
相关代理商/技术参数
参数描述
FDMF6707V 功能描述:功率驱动器IC Hi Performance, Hi Frequency DrMOS 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
FDMF6708N 功能描述:功率驱动器IC XS DrMOS Module Hi-Perf, Hi-Freq 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
FDMF6730 功能描述:功率驱动器IC Plus Driver Multichip Modules 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
FDMF6820A 功能描述:功率驱动器IC Xtra Small, Hi Perf, Hi Freq DrMOS Module 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
FDMF6820B 功能描述:功率驱动器IC Xtra Small, Hi Perf, Hi Freq DrMOS Module 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