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PDF TOP101YN Data sheet ( Hoja de datos )
| Número de pieza | TOP101YN | |
| Descripción | Three-terminal Off-line PWM Switch | |
| Fabricantes | Power Integrations | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TOP101YN (archivo pdf) en la parte inferior de esta página. Total 18 Páginas | ||
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TOP100-4
TOPSwitch
Three-terminal Off-line PWM Switch
AC
IN
DRAIN
SOURCE
CONTROL
TOPSwitch
TOPSwitch SELECTION GUIDE
ORDER
PART
NUMBER
OUTPUT POWER RANGE
FLYBACK
PFC/
BOOST
100/110 V
VAC
48 V
DC
100/110
VAC
N*
N*
N*
N*
N*
July 2009
1 page  
TOP100-4
VIN
VIN
DRAIN
0
VOUT
0
IOUT
0
VC
0
IC 0
12
812
81
••• •••
12
•••
812
•••
81
45 mA
VC(reset)
1
2
34
1
PI-1119-110194
Figure 6. Typical Waveforms for (1) Normal Operation, (2) Auto-restart, (3) Latching Shutdown, and (4) Power Down Reset.
Shutdown/Auto-restart
To minimize TOPSwitch power
dissipation, the shutdown/auto-restart
circuit turns the power supply on and off
at a duty cycle of typically 5% if an out
of regulation condition persists. Loss of
regulation interrupts the external current
into the CONTROL pin. V regulation
C
changes from shunt mode to the
hysteretic auto-restart mode described
above. When the fault condition is
removed, the power supply output
becomes regulated, V regulation returns
C
to shunt mode, and normal operation of
the power supply resumes.
Latching Shutdown
The output overvoltage protection latch
is activated by a high-current pulse into
the CONTROL pin. When set, the latch
turns off the TOPSwitch output.
Activating the power-up reset circuit by
removing and restoring input power, or
momentarily pulling the CONTROL pin
below the power-up reset threshold resets
the latch and allows TOPSwitch to
resume normal power supply operation.
V is regulated in hysteretic mode when
C
the power supply is latched off.
Overtemperature Protection
Temperature protection is provided by a
precision analog circuit that turns the
output MOSFET off when the junction
temperature exceeds the thermal
shutdown temperature (typically 145°C).
Activating the power-up reset circuit by
removing and restoring input power or
momentarily pulling the CONTROL pin
below the power-up reset threshold resets
the latch and allows TOPSwitch to
resume normal power supply operation.
V is regulated in hysteretic mode when
C
the power supply is latched off.
High-voltage Bias Current Source
This current source biases TOPSwitch
from the DRAIN pin and charges the
CONTROL pin external capacitance
(C ) during start-up or hysteretic
T
operation. Hysteretic operation occurs
during auto-restart and latched
shutdown. Thecurrentsourceisswitched
on and off with an effective duty cycle of
approximately 35%. This duty cycle is
determined by the ratio of CONTROL
pin charge (I ) and discharge currents
C
(I and I ). This current source is
CD1 CD2
turned off during normal operation when
the output MOSFET is switching.
5F
7/ 09
5 Page 
Conditions
Specification Symbol
(Unless Otherwise Specified)
See Figure 14
SOURCE = 0 V
T
j
=
-40
to
125°C
SHUTDOWN/AUTO-RESTART (cont.)
UV Lockout
Threshold Voltage
S1 open
Auto-restart
Hysteresis Voltage
S1 open
Auto-restart
Duty Cycle
S1 open
Auto-restart
Frequency
CIRCUIT PROTECTION
Self-protection
Current Limit
I
LIMIT
Leading Edge
Blanking Time
tLEB
S1 open
TOP100
di/dt
=
160
mA/µs,
T
j
=
25˚C
TOP101
di/dt
=
280
mA/µs,
T
j
=
25˚C
TOP102
di/dt
=
400
mA/µs,
T
j
=
25˚C
TOP103
di/dt = 520 mA/µs, Tj = 25˚C
TOP104
di/dt = 600 mA/µs, Tj = 25˚C
I = 4 mA
C
Current Limit
Delay
t
ILD
I = 4 mA
C
Thermal Shutdown
Temperature
IC = 4 mA
Latched Shutdown
Trigger Current
I
SD
See Figure 13
Power-up Reset
Threshold Voltage
V
C(RESET)
S2 open
TOP100-4
Min Typ Max Units
4.7
0.6 1.0
5
1.2
8
V
V
%
Hz
0.88 1.25
1.50 2.15
2.20 3.10
2.85 4.00
3.30 4.60
150
100
125 145
25 45 75
2.0 3.3 4.2
A
ns
ns
°C
mA
V
11F
7/ 09
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet TOP101YN.PDF ] | |
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