HAT2195R
Normalized Transient Thermal Impedance vs. Pulse Width
10
Normalized Transient Thermal Impedance
γs
(t)
1
D=1
0.5
0.2
0.1
0.1
0.05
0.02
0.01
0.01
θch
- f(t) =
γs
(t) x
θch
- f
θch
- f = 83.3°C/W, Ta = 25°C
When using the glass epoxy board
(FR4 40x40x1.6 mm)
PDM
0.001
o
1sh
u
tp
lse
D=
PW
T
PW
T
0.0001
10
µ
100
µ
1m
10 m
100 m
1
10
100
1000
10000
Pulse Width PW (S)
Avalanche Test Circuit
E
AR
=
Avalanche Waveform
1
2
L
•
I
AP
2
•
V
DSS
V
DSS –
V
DD
V
DS
Monitor
L
I
AP
Monitor
V
(BR)DSS
I
AP
V
DD
I
D
V
DS
Rg
Vin
15 V
D. U. T
50
Ω
0
V
DD
Switching Time Test Circuit
Vin Monitor
Rg
D.U.T.
R
L
Vin
Vin
10 V
V
DS
= 10 V
Vout
Monitor
Switching Time Waveform
90%
10%
10%
90%
td(on)
tr
90%
td(off)
t
f
10%
Vout
Rev.3.00, Apr.01.2004, page 5 of 6
RENESAS [ RENESAS TECHNOLOGY CORP ]
