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参数资料
| 型号： | MMDF3N04HDR2 |
| 厂商： | MOTOROLA INC |
| 元件分类： | 小信号晶体管 |
| 英文描述： | 3400 mA, 40 V, 2 CHANNEL, N-CHANNEL, Si, SMALL SIGNAL, MOSFET |
| 封装： | SO-8 |
| 文件页数： | 6/10页 |
| 文件大小： | 291K |
| 代理商： | MMDF3N04HDR2 |
MMDF3N04HD
5
Motorola TMOS Power MOSFET Transistor Device Data
Figure 8. Gate–To–Source and Drain–To–Source
Voltage versus Total Charge
Figure 9. Resistive Switching Time
Variation versus Gate Resistance
V
GS
,GA
TE–T
O–SOURCE
VOL
TAGE
(VOL
TS)
Qg, TOTAL GATE CHARGE (nC)
0
4
8
ID = 3.4 A
TJ = 25°C
VGS
9
3
0
12
30
10
0
VDS
QT
Q1
Q2
Q3
12
16
V
DS
,DRAIN–T
O–SOURCE
VOL
TAGE
(VOL
TS)
6
20
t,
TIME
(ns)
RG, GATE RESISTANCE (OHMS)
1000
1
100
10
1
VDD = 20 V
ID = 3.4 A
VGS = 10 V
TJ = 25°C
td(on)
tr
100
10
td(off)
tf
40
DRAIN–TO–SOURCE DIODE CHARACTERISTICS
The switching characteristics of a MOSFET body diode
are very important in systems using it as a freewheeling or
commutating diode. Of particular interest are the reverse re-
covery characteristics which play a major role in determining
switching losses, radiated noise, EMI and RFI.
System switching losses are largely due to the nature of
the body diode itself. The body diode is a minority carrier de-
vice, therefore it has a finite reverse recovery time, trr, due to
the storage of minority carrier charge, QRR, as shown in the
typical reverse recovery wave form of Figure 12. It is this
stored charge that, when cleared from the diode, passes
through a potential and defines an energy loss. Obviously,
repeatedly forcing the diode through reverse recovery further
increases switching losses. Therefore, one would like a
diode with short trr and low QRR specifications to minimize
these losses.
The abruptness of diode reverse recovery effects the
amount of radiated noise, voltage spikes, and current ring-
ing. The mechanisms at work are finite irremovable circuit
parasitic inductances and capacitances acted upon by high
di/dts. The diode’s negative di/dt during ta is directly con-
trolled by the device clearing the stored charge. However,
the positive di/dt during tb is an uncontrollable diode charac-
teristic and is usually the culprit that induces current ringing.
Therefore, when comparing diodes, the ratio of tb/ta serves
as a good indicator of recovery abruptness and thus gives a
comparative estimate of probable noise generated. A ratio of
1 is considered ideal and values less than 0.5 are considered
snappy.
Compared to Motorola standard cell density low voltage
MOSFETs, high cell density MOSFET diodes are faster
(shorter trr), have less stored charge and a softer reverse re-
covery characteristic. The softness advantage of the high
cell density diode means they can be forced through reverse
recovery at a higher di/dt than a standard cell MOSFET
diode without increasing the current ringing or the noise gen-
erated. In addition, power dissipation incurred from switching
the diode will be less due to the shorter recovery time and
lower switching losses.
Figure 10. Diode Forward Voltage versus Current
I S
,SOURCE
CURRENT
(AMPS)
VSD, SOURCE–TO–DRAIN VOLTAGE (VOLTS)
1.0
1.5
2.0
3.0
2.5
0.5
0.55
0
0.5
TJ = 25°C
VGS = 0 V
0.6
0.65
0.7
0.75
0.8
0.85
3.5
0.9
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MMDF3N04HDR2G | 功能描述:MOSFET NFET SO8D 40V 3.4A 80mOhm RoHS:否 制造商:STMicroelectronics 晶体管极性:N-Channel 汲极/源极击穿电压:650 V 闸/源击穿电压:25 V 漏极连续电流:130 A 电阻汲极/源极 RDS（导通）:0.014 Ohms 配置:Single 最大工作温度: 安装风格:Through Hole 封装 / 箱体:Max247 封装:Tube |
| MMDF3N06HD | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:DUAL TMOS POWER MOSFET 60 VOLTS |
| MMDF3N06VL | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:Power MOSFET 3 Amps, 60 Volts N−Channel SO−8, Dual |
| MMDF3N06VLR2 | 制造商:ON Semiconductor 功能描述:Trans MOSFET N-CH 60V 3.3A 8-Pin SOIC N T/R |
| MMDF3NO2HD | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:TMOS DUAL N-CHANNEL FIELD EFFECT TRANSISTOR |
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