TOP252-262
t
2
t
1
HV
90%
90%
t
t
DRAIN
VOLTAGE
1
2
D =
10%
0 V
PI-2039-033001
Figure 51. Duty Cycle Measurement.
t
(Blanking Time)
LEB
120
100
80
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
I
INIT(MIN)
60
40
Dynamic
Impedance
1
=
Slope
20
0
0
5
6
7
8
9
0
1
2
3
4
5
6
7
8
CONTROL Pin Voltage (V)
Time (Ms)
Figure 52. CONTROL Pin I-V Characteristic.
Figure 53. Drain Current Operating Envelope.
P or G Package (M Pin)
0-300 kΩ
TOP254-258 Y, all E, L or M Packages (X and V Pins)
S1
470 Ω
S5
5 W
0-300 kΩ
5-50 V
M
0-60 kΩ
5-50 V
40 V
TOPSwitch-HX
C
V
D
TOP259-261 Y (X and V Pins)
0-300 kΩ
CONTROL
470 Ω
C
S2
D
F
X
S
S4
0-15 V
CONTROL
G
S3
0-60 kΩ
5-50 V
C
47 μF
0.1 μF
X
S
NOTES: 1. This test circuit is not applicable for current limit or output characteristic measurements.
2. For P, G and M packages, short all SOURCE pins together.
PI-4738-071408
Figure 54. TOPSwitch-HX General Test Circuit.
38
Rev. F 01/09
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