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PDF TOP223Y Data sheet ( Hoja de datos )

Número de pieza TOP223Y
Descripción Three-terminal Off-line PWM Switch
Fabricantes Power Integrations Inc. 
Logotipo Power Integrations  Inc. Logotipo



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TOP223Y Hoja de datos, Descripción, Manual
TOP221-227
TOPSwitch-®II Family
Three-terminal Off-line PWM Switch
®
Product Highlights
Lowest cost, lowest component count switcher solution
Cost competitive with linears above 5W
Very low AC/DC losses up to 90% efficiency
Built-in Auto-restart and Current limiting
Latching Thermal shutdown for system level protection
Implements Flyback, Forward, Boost or Buck topology
Works with primary or opto feedback
Stable in discontinuous or continuous conduction mode
Source connected tab for low EMI
Circuit simplicity and Design Tools reduce time to market
Description
The second generation TOPSwitch-II family is more cost
effective and provides several enhancements over the first
generation TOPSwitchfamily. TheTOPSwitch-II family extends
the power range from 100W to 150W for 100/115/230 VAC
input and from 50W to 90W for 85-265 VAC universal input.
This brings TOPSwitch technology advantages to many new
applications, i.e. TV, Monitor, Audio amplifiers, etc. Many
significant circuit enhancements that reduce the sensitivity to
board layout and line transients now make the design even
AC
IN
D
TOPSwitch
CONTROL
C
S
Figure 1. Typical Flyback Application.
PI-1951-091996
easier. The standard 8L PDIP package option reduces cost in
lower power, high efficiency applications. The internal lead
frame of this package uses six of its pins to transfer heat from
the chip directly to the board, eliminating the cost of a heat sink.
TOPSwitch incorporates all functions necessary for a switched
mode control system into a three terminal monolithic IC: power
MOSFET, PWM controller, high voltage start up circuit, loop
compensation and fault protection circuitry.
OUTPUT POWER TABLE
TO-220 (Y) Package1
PART Single Voltage Input3
ORDER 100/115/230 VAC ±15%
NUMBER
P 4,6
MAX
Wide Range Input
85 to 265 VAC
P 4,6
MAX
TOP221Y
12 W
7W
8L PDIP (P) or 8L SMD (G) Package2
PART
ORDER
NUMBER
Single Voltage. Input3
100/115/230 VAC ±15%
P 5,6
MAX
Wide Range Input
85 to 265 VAC
P 5,6
MAX
TOP221P or TOP221G
9W
6W
TOP222Y
25 W
15 W
TOP222P or TOP222G
15 W
10 W
TOP223Y
50 W
30 W
TOP223P or TOP223G
25 W
15 W
TOP224Y
75 W
45 W
TOP224P or TOP224G
30 W
20 W
TOP225Y
100 W
60 W
TOP226Y
125 W
75 W
TOP227Y
150 W
90 W
Notes: 1. Package outline: TO-220/3 2. Package Outline: DIP-8 or SMD-8 3. 100/115 VAC with doubler input 4. Assumes appropriate
heat sinking to keep the maximum TOPSwitch junction temperature below 100 °C. 5. Soldered to 1 sq. in.( 6.45 cm2), 2 oz. copper clad
(610 gm/m2) 6. PMAX is the maximum practical continuous power output level for conditions shown. The continuous power capability
in a given application depends on thermal environment, transformer design, efficiency required, minimum specified input voltage, input
storage capacitance, etc. 7. Refer to key application considerations section when using TOPSwitch-II in an existing TOPSwitch design.
July 2001

1 page

TOP223Y pdf
TOP221-227
VIN
VIN
DRAIN
0
VOUT
0
IOUT
0
VC
0
12
812
81
•••
•••
VC(reset)
IC 0
12
812
81
•••
•••
1 2 13
Figure 6. Typical Waveforms for (1) Normal Operation, (2) Auto-restart, and (3) Power Down Reset.
1
PI-2030-042397
compensated to minimize variation of the effective peak current
limit due to temperature related changes in output MOSFET
R.
DS(ON)
The leading edge blanking circuit inhibits the current limit
comparator for a short time after the output MOSFET is turned
on. The leading edge blanking time has been set so that current
spikes caused by primary-side capacitances and secondary-side
rectifier reverse recovery time will not cause premature
termination of the switching pulse.
The current limit can be lower for a short period after the leading
edge blanking time as shown in Figure 12. This is due to
dynamic characteristics of the MOSFET. To avoid triggering
the current limit in normal operation, the drain current waveform
should stay within the envelope shown.
Shutdown/Auto-restart
To minimize TOPSwitch power dissipation, the shutdown/
auto-restart circuit turns the power supply on and off at an auto-
restart duty cycle of typically 5% if an out of regulation
condition persists. Loss of regulation interrupts the external
current into the CONTROL pin. VC regulation changes from
shunt mode to the hysteretic auto-restart mode described above.
When the fault condition is removed, the power supply output
becomes regulated, VC regulation returns to shunt mode, and
normal operation of the power supply resumes.
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 135 °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. VC is regulated in hysteretic mode and a 4.7 V to
5.7 V (typical) sawtooth waveform is present on the CONTROL
pin when 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 (CT) during
start-up or hysteretic operation. Hysteretic operation occurs
during auto-restart and overtemperature latched shutdown.
The current source is switched on and off with an effective duty
cycle of approximately 35%. This duty cycle is determined by
the ratio of CONTROL pin charge (IC) and discharge currents
(I and I ). This current source is turned off during normal
CD1 CD2
operation when the output MOSFET is switching.
5D
7/01

5 Page

TOP223Y arduino
TOP221-227
Parameter
Conditions
Symbol
(Unless Otherwise Specified)
See Figure 14
SOURCE = 0 V; TJ = -40 to 125 °C
Min
Typ Max
SHUTDOWN/AUTO-RESTART (cont.)
Auto-restart
Threshold Voltage
VC(AR)
S1 open
5.7
UV Lockout
Threshold Voltage
S1 open
4.4 4.7 5.0
Auto-restart
Hysteresis Voltage
S1 open
0.6 1.0
Auto-restart
Duty Cycle
Auto-restart
Frequency
S1 open
TOP221-222
2
5
9
TOP223-227
2
5
8
S1 open
1.2
CIRCUIT PROTECTION
Self-protection
Current Limit
Initial Current
Limit
Leading Edge
Blanking Time
di/dt = 40 mA/µs,
TOP221Y
0.23 0.25 0.28
TJ = 25 °C
TOP221P or G
di/dt = 80 mA/µs,
TOP222Y
0.45 0.50 0.55
TJ = 25 °C
TOP222P or G
di/dt = 160 mA/µs,
TOP223Y
0.90 1.00 1.10
T
J
=
25
°C
TOP223P or G
ILIMIT di/dt = 240 mA/µs,
TOP224Y
1.35 1.50 1.65
T
J
=
25
°C
TOP224P or G
di/dt = 320 mA/µs,
TJ = 25 °C
TOP225Y
1.80 2.00 2.20
di/dt = 400 mA/µs,
TJ = 25 °C
TOP226Y
2.25 2.50 2.75
di/dt = 480 mA/µs,
TJ = 25 °C
TOP227Y
2.70 3.00 3.30
85 VAC
0.75 x
See Figure 12 (Rectified Line Input) ILIMIT(MIN)
IINIT TJ = 25 °C
265 VAC
0.6 x
(Rectified Line Input)
I
LIMIT(MIN)
t IC = 4 mA,
LEB
T
J
=
25
°C
180
Units
V
V
V
%
Hz
A
A
ns
11D
7/01

11 Page


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