top221 Power Integrations, Inc., top221 Datasheet - Page 13

• Manufacturer Part Number: top221
• Description: Three-terminal Off-line Pwm Switch
• Manufacturer: Power Integrations, Inc.

NOTES:
A. For specifications with negative values, a negative temperature coefficient corresponds to an increase in
B. The breakdown voltage and leakage current measurements can be accomplished as shown in Figure 15 by using
C. It is possible to start up and operate TOPSwitch at DRAIN voltages well below 36 V. However, the CONTROL pin
DRAIN Supply
Voltage
Shunt Regulator
Voltage
Shunt Regulator
Temperature Drift
CONTROL Supply/
Discharge Current
OUTPUT (cont.)
magnitude with increasing temperature, and a positive temperature coefficient corresponds to a decrease in
magnitude with increasing temperature.
the following sequence:
i. The curve tracer should initially be set at 0 V. The base output should be adjusted through a voltage sequence
ii. The breakdown and the leakage measurements can now be taken with the curve tracer. The maximum
charging current is reduced, which affects start-up time, auto-restart frequency, and auto-restart duty cycle. Refer
to the characteristic graph on CONTROL pin charge current (I
characteristics.
of 0 V, 6.5 V, 4.3 V, and 6.5 V, as shown. The base current from the curve tracer should not exceed 100 mA. This
voltage from the curve tracer must be limited to 700 V under all conditions.
Parameter
CONTROL pin sequence interrupts the Auto-restart sequence and locks the TOPSwitch internal MOSFET in the
OFF State.
Symbol
V
C(SHUNT)
I
I
CD1
CD2
MOSFET Enabled
SOURCE = 0 V
(Unless Otherwise Specified)
Output MOSFET Disabled
Output
Conditions
See Figure 14
See Note C
I
C
= 4 mA
;
T
J
= -40 to 125 C
TOP221-224
TOP225-227
C
) vs. DRAIN voltage for low voltage operation
Min
5.5
0.6
0.7
0.5
36
Typ
5.7
1.2
1.4
0.8
50
TOP221-227
Max
6.0
1.6
1.8
1.1
Units
ppm/ C
7/01
mA
D
V
V
13