TOP414 Power Integrations Inc., TOP414 Datasheet - Page 12

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TOP414

Manufacturer Part Number
TOP414
Description
Three-terminal DC to DC PWM Switch
Manufacturer
Power Integrations Inc.
Datasheet

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Figure 9. TOPSwitch Duty Cycle Measurement.
Figure 11. TOPSwitch General Test Circuit.
12
VOLTAGE
TOP412/414
DRAIN
A
4/99
TOPSwitch
0 V
HV
NOTES: 1. This test circuit is not applicable for current limit or output characteristic measurements.
90%
2. For P package, short all SOURCE and SOURCE (HV RTN) pins together.
D
S
t 1
CONTROL
10%
t 2
C
DC =
t 1
t 2
PI-1215-091794
90%
0.1 F
C1
TYPICAL CONTROL PIN I-V CHARACTERISTIC
47 F
C2
Figure 10. TOPSwitch CONTROL Pin I-V Characteristic.
120
100
80
60
40
20
0
S1
0
470
5 W
R1
Impedance
Trigger Current (45 mA)
Dynamic
Latched Shutdown
CONTROL Pin Voltage (V)
0-50 V
VS1
470
2
R2
=
Slope
1
S2
4
6
8
40 V
VS2
PI-2212-073098
10

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