- 您现在的位置：买卖IC网 > PDF目录383187 > IXDI409YI (IXYS CORP) 9 Amp Low-Side Ultrafast MOSFET Driver PDF资料下载
参数资料
| 型号： | IXDI409YI |
| 厂商： | IXYS CORP |
| 元件分类： | 功率晶体管 |
| 英文描述： | 9 Amp Low-Side Ultrafast MOSFET Driver |
| 中文描述： | 9 A BUF OR INV BASED MOSFET DRIVER, PSSO5 |
| 封装： | TO-263, D2PAK-5 |
| 文件页数： | 8/10页 |
| 文件大小： | 259K |
| 代理商： | IXDI409YI |
8
IXDD409PI / 409SI / 409YI / 409CI IXDI409PI / 409SI / 409YI / 409CI
IXDN409PI / 409SI / 409YI / 409CI
APPLICATIONS INFORMATION
Short Circuit di/dt Limit
A short circuit in a high-power MOSFET module such as the
VM0580-02F, (580A, 200V), as shown in Figure 25, can cause
the current through the module to flow in excess of 1500A for
10
μ
s or more prior to self-destruction due to thermal runaway.
For this reason, some protection circuitry is needed to turn off
the MOSFET module. However, if the module is switched off
too fast, there is a danger of voltage transients occuring on the
drain due to Ldi/dt, (where L represents total inductance in
series with drain). If these voltage transients exceed the
MOSFET's voltage rating, this can cause an avalanche break-
down.
The IXDD409 has the unique capability to softly switch off the
high-power MOSFET module, significantly reducing these
Ldi/dt transients.
Thus, the IXDD409 helps to prevent device destruction from
both
dangers; over-current, and avalanche breakdown due to
di/dt induced over-voltage transients.
The IXDD409 is designed to not only provide
±
9A under normal
conditions, but also to allow it's output to go into a high
impedance state. This permits the IXDD409 output to control
a separate weak pull-down circuit during detected overcurrent
shutdown conditions to limit and separately control d
VGS
/dt gate
turnoff. This circuit is shown in Figure 26.
Referring to Figure 26, the protection circuitry should include
a comparator, whose positive input is connected to the source
of the VM0580-02. A low pass filter should be added to the input
of the comparator to eliminate any glitches in voltage caused
by the inductance of the wire connecting the source resistor to
ground. (Those glitches might cause false triggering of the
comparator).
The comparator's output should be connected to a SRFF(Set
Reset Flip Flop). The flip-flop controls both the Enable signal,
and the low power MOSFET gate. Please note that CMOS 4000-
series devices operate with a V
range from 3 to 15 VDC, (with
18 VDC being the maximum allowable limit).
A low power MOSFET, such as the 2N7000, in series with a
resistor, will enable the VMO580-02F gate voltage to drop
gradually. The resistor should be chosen so that the RC time
constant will be 100us, where "C" is the Miller capacitance of
the VMO580-02F.
For resuming normal operation, a Reset signal is needed at
the SRFF's input to enable the IXDD409 again. This Reset can
be generated by connecting a One Shot circuit between the
IXDD409 Input signal and the SRFF restart input. The One Shot
will create a pulse on the rise of the IXDD409 input, and this
pulse will reset the SRFF outputs to normal operation.
When a short circuit occurs, the voltage drop across the low-
value, current-sensing resistor, (Rs=0.005 Ohm), connected
between the MOSFET Source and ground, increases. This
triggers the comparator at a preset level. The SRFF drives a low
input into the Enable pin disabling the IXDD409 output. The
SRFF also turns on the low power MOSFET, (2N7000).
In this way, the high-power MOSFET module is softly turned off
by the IXDD409, preventing its destruction.
Figure 26 - Application Test Diagram
10uH
Ld
0.1ohm
Rd
Rs
20nH
Ls
1ohm
Rg
10kohm
R+
VMO580-02F
High_Power
5kohm
Rcomp
100pF
C+
+
-
V+
V-
Comp
LM339
1600ohm
Rsh
Ccomp
1pF
VCC
IN
EN
GND
OUT
IXDD409
+
-
VIN
+
-
VCC
+
-
REF
+
-
VB
CD4001A
NOR2
1Mohm
Ros
NOT2
CD4011A
NAND
CD4049A
NOT1
CNOR1
CD4049A
NOT3
Low_Power
2N7002/PLP
1pF
0
S
R
EN
Q
One Shot Circuit
SR Flip-Flop
相关PDF资料 |
PDF描述 |
|---|---|
| IXDN409CI | 9 Amp Low-Side Ultrafast MOSFET Driver |
| IXDN409PI | 9 Amp Low-Side Ultrafast MOSFET Driver |
| IXDN409SI | 9 Amp Low-Side Ultrafast MOSFET Driver |
| IXDN409YI | 9 Amp Low-Side Ultrafast MOSFET Driver |
| IXDD409CI | 9 Amp Low-Side Ultrafast MOSFET Driver |
相关代理商/技术参数 |
参数描述 |
|---|---|
| IXDI414 | 制造商:IXYS 制造商全称:IXYS Corporation 功能描述:14 Ampere Low-Side Ultrafast MOSFET Drivers |
| IXDI414CI | 功能描述:功率驱动器IC 14 Amps 40V 1 Rds 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 |
| IXDI414CM | 制造商:IXYS 制造商全称:IXYS Corporation 功能描述:14 Ampere Low-Side Ultrafast MOSFET Drivers |
| IXDI414PI | 功能描述:功率驱动器IC 14 Amps 40V 1 Rds 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 |
| IXDI414SI | 功能描述:功率驱动器IC 14 Amps 40V 1 Rds 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 |
发布紧急采购，3分钟左右您将得到回复。