International Rectifier’s MEGA RAD HARD technology
HEXFETs demonstrate excellent threshold voltage stability and breakdown voltage stability at total radiation
doses as high as 1 x 10
and post-radiation test conditions, International Rectifier’s
RAD HARD HEXFETs retain identical electrical specifications up to 1 x 10
(Si) total dose, under the same pre-dose conditions, only
minor shifts in the electrical specifications are observed
and are so specified in table 1. No compensation in gate
drive circuitry is required. In addition, these devices are
capable of surviving transient ionization pulses as high
as 1 x 10
within a few microseconds. Single Event Effect (SEE)
testing of International Rectifier RAD HARD HEXFETs
has demonstrated virtual immunity to SEE failure. Since
the MEGA RAD HARD process utilizes International
Rectifier’s patented HEXFET technology, the user can
expect the highest quality and reliability in the industry.
RAD HARD HEXFET transistors also feature all of the
well-established advantages of MOSFETs, such as voltage control, very fast switching, ease of paralleling and
temperature stability of the electrical parameters.
They are well-suited for applications such as switching
power supplies, motor controls, inverters, choppers, audio amplifiers and high-energy pulse circuits in space and
weapons environments.
Linear Derating Factor0.60W/K ➄
Gate-to-Source Voltage±20V
Single Pulse Avalanche Energy ➁330 (see fig. 29)mJ
Avalanche Current ➀9.0A
Repetitive Avalanche Energy ➀7.5mJ
Operating Junction-55 to 150
Storage Temperature Range
Drain-to-Source Breakdown Voltage200——VVGS = 0V, ID = 1.0 mA
/∆TJTemperature Coefficient of Breakdown—0.27—V/°CReference to 25°C, ID = 1.0 mA
Voltage
Static Drain-to-Source——0.40VGS = 12V, ID = 6.0A
On-State Resistance——0.49ΩVGS = 12V, ID = 9.0A
Gate Threshold V oltage2.0—4.0VVDS = VGS, ID = 1.0 mA
Forward Transconductance3.0——S ( )VDS > 15V, IDS = 6.0A ➃
Zero Gate Voltage Drain Current——25VDS = 0.8 x Max Rating,VGS = 0V
——250VDS = 0.8 x Max Rating
Gate-to-Source Leakage Forward——100VGS = 20V
Gate-to-Source Leakage Reverse——-100VGS = -20V
Total Gate Charge——50VGS =12V, ID = 9.0A
Gate-to-Source Charge——10VDS = Max. Rating x 0.5
Gate-to-Drain (‘Miller’) Charge——2 0(see figures 23 and 31)
Turn-On Delay Time——35VDD = 100V, ID = 9.0A,
Rise Tim e——80RG = 7.5Ω
Turn-Off Delay Time——60(see figure 28)
Fall Time——46
Internal Drain Inductance—2. 0—
International Rectifier Radiation Hardened HEX-FETs
are tested to verify their hardness capability . The hardness assurance program at International Rectifier uses
two radiation environments.
Every manufacturing lot is tested in a low dose rate
(total dose) environment per MlL-STD-750, test
method 1019. International Rectifier has imposed a
standard gate voltage of 12 volts per note 6 and a V
bias condition equal to 80% of the device rated voltage
per note 7 and figure 8b. Pre- and post-radiation limits
of the devices irradiated to 1 x 10
5
Rads (Si) are identical and are presented in T able 1, column 1, IRHN7230.
Device performance limits at a post radiation level of 1
6
x 10
Rads (Si) are presented in Table 1, column 2,
IRHN8230. The values in T able 1 will be met for either of
the two low dose rate test circuits that are used. Typical delta curves showing radiation response appear in
figures 1 through 5. Typical post-radiation curves appear
in figures 10 through 17.
Table 1. Low Dose Rate ➅ ➆IRHN7230IRHN8230
BV
DSS
V
GS(th)
I
GSS
I
GSS
I
DSS
R
DS(on)1
V
SD
Parameter
Drain-to-Source Breakdown Voltage 200—200—
Gate Threshold Voltage ➃2.04.01.254.5VGS = VDS, ID = 1.0 mA
Gate-to-Source Leakage Forward—1 00—100
Gate-to-Source Leakage Reverse—-100—-100VGS = -20V
Zero Gate Voltage Drain Current—25—25µAVDS = 0.8 x Max Rating, VGS = 0
Static Drain-to-Source ➃—0.40—0.53ΩVGS = 12V, ID = 6.0A
On-State Resistance One
Diode Forward Voltage ➃—1.6—1.6VTC = 25°C, IS = 9.0A,VGS = 0V
Both pre- and post-radiation performance are tested and
specified using the same drive circuitry and test conditions in order to provide a direct comparison. It should
be noted that at a radiation level of 1 x 10
change in limits are specified in DC parameters. At a
radiation level of 1 x 10
6
Rads (Si), leakage remains
low and the device is usable with no change in drive
circuitry required.
DSS
High dose rate testing may be done on a special request basis, using a dose rate up to 1 x 10
Sec. Photocurrent and transient voltage waveforms are
shown in figure 7 and the recommended test circuit to
be used is shown in figure 9.
International Rectifier radiation hardened HEXFETs
have been characterized in neutron and heavy ion
Single Event Effects (SEE) environments. The effects
on bulk silicon of the type used by International Rectifier on RAD HARD HEXFETs are shown in figure 6.
Single Event Effects characterization is shown in
T able 3.
V
nA
VGS = 0V, ID = 1.0 mA
VGS = +20V
5
Rads (Si), no
12
Rads (Si)/
Table 2. High Dose Rate ➇
ParameterMin. Typ Max. Min. Typ. Max. UnitsTest Conditions
V
I
di/dt—— 160 ——8.0 A/µsec Rate of rise of photo-current
L
Drain-to-Source Voltage—— 160 ——1 60VApplied drain-to-source voltage
DSS
PP
1
Table 3. Single Event Effects ➈
ParameterTyp.UnitsIon
BV
DSS
200VNi281 x 10
1011 Rads (Si)/sec 1012 Rads (Si)/sec
during gamma-dot
—20——20 — A Peak radiation induced photo-current
1.0 ——20——µHCircuit inductance required to limit di/dt
LET (Si)FluenceRangeVDS BiasVGS Bias
2
(MeV/mg/cm
) (ions/cm2)(µm)(V)(V)
5
~41160-5
VGS = 12V
To Order
Next Data SheetIndex
Previous Datasheet
ID = 6.0A
Post-RadiationIRHN7230, IRHN8230 Devices
Figure 1. – Typical Response of Gate Threshold Voltage
Figure 3. – Typical Response of Transconductance Vs.
Vs. Total Dose Exposure
VGS ≥ 15V
ID = 6.0A
Total Dose Exposure
Figure 2. – Typical Response of On-State Resistance
Figure 4. – Typical Response of Drain-to-Source
Vs. Total Dose Exposure
Breakdown Vs. Total Dose Exposure
Post-RadiationIRHN7230, IRHN8230 Devices
To Order
Next Data SheetIndex
Previous Datasheet
Figure 5. – Typical Zero Gate Voltage Drain Current
Figure 7. – Typical Transient Response
of Rad Hard HEXFET During 1 x10
Vs. Total Dose Exposure
Rad (Si)/Sec Exposure
12
Figure 8a. – Gate
Stress of V
Figure 8b. – V
Equals 80% of B
GSS
12 Volts During
Radiation
Radiation
Figure 6. – Typical On-State Resistance Vs. Neutron
Equals
Stress
DSS
During
VDSS
Fluence Level
Figure 9. – High Dose Rate
(Gamma Dot) Test Circuit
Loading...
+ 9 hidden pages
You need points to download manuals.
1 point = 1 manual.
You can buy points or you can get point for every manual you upload.