|
|
Número de pieza | TOP262EN | |
Descripción | Integrated Off Line Switcher | |
Fabricantes | Power Integrations | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de TOP262EN (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
No Preview Available ! TOP252-262
TOPSwitch™-HX Family
Enhanced EcoSmart™, Integrated Off-Line Switcher with
Advanced Feature Set and Extended Power Range
Product Highlights
Lower System Cost, Higher Design Flexibility
• Multi-mode operation maximizes efficiency at all loads
• New eSIP-7F and eSIP-7C packages
• Low thermal impedance junction-to-case (2 °C per watt)
• Low height is ideal for adapters where space is limited
• Simple mounting using a clip to aid low cost manufacturing
• Horizontal eSIP-7F package ideal for ultra low height adapter
and monitor applications
• Extended package creepage distance from DRAIN pin to
adjacent pin and to heat sink
• No heat sink required up to 35 W using P, G and M packages
with universal input voltage and up to 48 W at 230 VAC
• Output overvoltage protection (OVP) is user programmable for
latching/non-latching shutdown with fast AC reset
• Allows both primary and secondary sensing
• Line undervoltage (UV) detection prevents turn-off glitches
• Line overvoltage (OV) shutdown extends line surge limit
• Accurate programmable current limit
• Optimized line feed-forward for line ripple rejection
• 132 kHz frequency (254Y-258Y and all E/L packages) reduces
transformer and power supply size
• Half frequency option for video applications
• Frequency jittering reduces EMI filter cost
+
AC DC
IN OU-T
DV
TOPSwitch-HX
CONTROL
C
S XF
Figure 1. Typical Flyback Application.
PI-4510-100206
• Heat sink is connected to SOURCE for low EMI
• Improved auto-restart delivers <3% of maximum power in
short circuit and open loop fault conditions
• Accurate hysteretic thermal shutdown function automatically
recovers without requiring a reset
• Fully integrated soft-start for minimum start-up stress
• Extended creepage between DRAIN and all other pins
improves field reliability
Output Power Table
Product5
230 VAC ±15%4
Adapter1
Open
Frame2
Peak3
TOP252PN/GN
TOP252MN
9W
15 W
21 W
21 W
85-265 VAC
Adapter1
Open
Frame2
6 W 10 W
Peak3
13 W
13 W
TOP253PN/GN
TOP253MN
15 W
25 W
38 W
43 W
9W
15 W
25 W
29 W
TOP254PN/GN
TOP254MN
16 W
28 W
47 W
62 W
11 W
20 W
30 W
40 W
TOP255PN/GN
TOP255MN
19 W
30 W
54 W
81 W
13 W
22 W
35 W
52 W
TOP256PN/GN
TOP256MN
21 W
34 W
63 W
98 W
15 W
26 W
40 W
64 W
TOP257PN/GN
TOP257MN
25 W
41 W
70 W
119 W
19 W
30 W
45 W
78 W
TOP258PN/GN
TOP258MN
29 W
48 W
77 W
140 W
22 W
35 W
50 W
92 W
Product5
TOP252EN/EG
230 VAC ±15%
Adapter1
Open
Frame2
10 W 21 W
85-265 VAC
Adapter1
Open
Frame2
6 W 13 W
TOP253EN/EG
21 W 43 W 13 W 29 W
TOP254EN/YN/EG 30 W 62 W 20 W 43 W
TOP255EN/YN/EG 40 W 81 W 26 W 57 W
TOP255LN
40 W 81 W 26 W 57 W
TOP256EN/YN/EG 60 W 119 W 40 W 86 W
TOP256LN
60 W 88 W 40 W 64 W
TOP257EN/YN/EG 85 W 157 W 55 W 119 W
TOP257LN
85 W 105 W 55 W 78 W
TOP258EN/YN/EG 105 W 195 W 70 W 148 W
TOP258LN
105 W 122 W 70 W 92 W
TOP259EN/YN/EG 128 W 238 W 80 W 171 W
TOP259LN
128 W 162 W 80 W 120 W
TOP260EN/YN/EG 147 W 275 W 93 W 200 W
TOP260LN
147 W 190 W 93 W 140 W
TOP261EN/YN/EG 177 W 333 W 118 W 254 W
TOP261LN
177 W 244 W 118 W 177 W
TOP262EN6
177 W 333 W 118 W 254 W
TOP262LN6
177 W 244 W 118 W 177 W
Table 1. Output Power Table. (for notes see page 2).
www.powerint.com
June 2013
1 page TOP252-262
CONTROL (C)
EXTERNAL
CURRENT
LIMIT (X)
VOLTAGE
MONITOR (V)
FREQUENCY
(F)
VC
ZC
SHUNT REGULATOR/
ERROR AMPLIFIER
-
+ 5.8 V
IFB
VI (LIMIT)
CURRENT
LIMIT
ADJUST
ON/OFF
5.8 V
4.8 V
+
-
INTERNAL UV
COMPARATOR
VBG + VT
1V
STOP LOGIC
SOFT START
0
INTERNAL
1 SUPPLY
√ 16
SHUTDOWN/
AUTO-RESTART
HYSTERETIC
THERMAL
SHUTDOWN
V OVP OV/
UV
LINE
SENSE DCMAX
STOP SOFT
START
DCMAX
OSCILLATOR
WITH JITTER
66k/132k
F REDUCTION
DMAX
CLOCK
KPS(UPPER)
KPS(LOWER)
F REDUCTION
SOFT START
IFB
IPS(UPPER)
IPS(LOWER)
PWM
OFF
SQ
R
Figure 3c. Functional Block Diagram (TOP254-258 YN Package and all eSIP Packages).
CONTROL (C)
EXTERNAL
CURRENT
LIMIT (X)
VOLTAGE
MONITOR (V)
VC
ZC
SHUNT REGULATOR/
ERROR AMPLIFIER
-
+ 5.8 V
IFB
VI (LIMIT)
CURRENT
LIMIT
ADJUST
ON/OFF
5.8 V
4.8 V
+
-
INTERNAL UV
COMPARATOR
VBG + VT
1V
STOP LOGIC
SOFT START
0
INTERNAL
1 SUPPLY
√ 16
SHUTDOWN/
AUTO-RESTART
HYSTERETIC
THERMAL
SHUTDOWN
V OVP OV/
UV
LINE
SENSE DCMAX
DCMAX
STOP SOFT
START
OSCILLATOR
WITH JITTER
DMAX
CLOCK
F REDUCTION
KPS(UPPER)
KPS(LOWER)
F REDUCTION
SOFT START
IFB
IPS(UPPER)
IPS(LOWER)
PWM
OFF
SQ
R
Figure 3d. Functional Block Diagram TOP259YN, TOP260YN, TOP261YN.
-
+
KPS(UPPER)
-
+
KPS(LOWER)
-
+
CURRENT LIMIT
COMPARATOR
SOURCE (S)
CONTROLLED
TURN-ON
GATE DRIVER
LEADING
EDGE
BLANKING
PI-4511-082907
-
+
KPS(UPPER)
-
+
KPS(LOWER)
-
+
CURRENT LIMIT
COMPARATOR
SOURCE (S)
CONTROLLED
TURN-ON
GATE DRIVER
LEADING
EDGE
BLANKING
PI-4974-122607
DRAIN (D)
SOURCE (S)
DRAIN (D)
SOURCE (S)
SIGNAL
GROUND (G)
www.powerint.com
5
Rev. H 06/13
5 Page TOP252-262
Line Overvoltage Shutdown (OV)
The same resistor used for UV also sets an overvoltage
threshold, which, once exceeded, will force TOPSwitch-HX to
stop switching instantaneously (after completion of the current
switching cycle). If this condition lasts for at least 100 ms, the
TOPSwitch-HX output will be forced into off state. Unlike with
TOPSwitch-GX, however, when the line voltage is back to
normal with a small amount of hysteresis provided on the OV
threshold to prevent noise triggering, the state machine sets to
S13 and forces TOPSwitch-HX to go through the entire auto-
restart sequence before attempting to switch again. The ratio
of OV and UV thresholds is preset at 4.5, as can be seen in
Figure 12. When the MOSFET is off, the rectified DC high
voltage surge capability is increased to the voltage rating of the
MOSFET (700 V), due to the absence of the reflected voltage
and leakage spikes on the drain. The OV feature can be
disabled independent of the UV feature.
In order to reduce the no-load input power of TOPSwitch-HX
designs, the V-pin (or M-pin for P Package) operates at very low
currents. This requires careful layout considerations when
designing the PCB to avoid noise coupling. Traces and
components connected to the V-pin should not be adjacent to
any traces carrying switching currents. These include the drain,
clamp network, bias winding return or power traces from other
converters. If the line sensing features are used, then the sense
resistors must be placed within 10 mm of the V-pin to minimize
the V-pin node area. The DC bus should then be routed to the
line sense resistors. Note that external capacitance must not
be connected to the V-pin as this may cause misoperation of
the V pin related functions.
Hysteretic or Latching Output Overvoltage Protection (OVP)
The detection of the hysteretic or latching output overvoltage
protection (OVP) is through the trigger of the line overvoltage
threshold. The V-pin or M-pin voltage will drop by 0.5 V, and
the controller measures the external attached impedance
immediately after this voltage drops. If IV or IM exceeds IOV(LS)
(336 mA typical) longer than 100 ms, TOPSwitch-HX will latch
into a permanent off state for the latching OVP. It only can be
reset if VV or VM goes below 1 V or VC goes below the power-
up-reset threshold (V )C(RESET) and then back to normal.
I1f0IV0omrsI,M
TdOoPesSwnoittchex-HceXewdilIlOiVn(LiSt)iaotre
exceeds no longer than
the line overvoltage and
the
hysteretic OVP. Their behavior will be identical to the line
overvoltage shutdown (OV) that has been described in detail in
the previous section.
Voltage Monitor and External Current Limit Pin Table*
Figure Number
16 17 18 19 20 21 22 23 24 25 26 27 28
Three Terminal Operation
3
Line Undervoltage
3333
33
Line Overvoltage
333
3
33
Line Feed-Forward (DCMAX)
Output Overvoltage Protection
333
33
33
Overload Power Limiting
3
External Current Limit
33
333
Remote ON/OFF
333
Device Reset
3
*This table is only a partial list of many VOLTAGE MONITOR and EXTERNAL CURRENT LIMIT Pin Configurations that are possible.
Table 2. VOLTAGE MONITOR (V) Pin and EXTERNAL CURRENT LIMIT (X) Pin Configuration Options.
Multi-Function Pin Table*
Figure Number
29 30 31 32 33 34 35 36 37 38 39 40
Three Terminal Operation
3
Line Undervoltage
3333
Line Overvoltage
333
3
Line Feed-Forward (DCMAX)
Output Overvoltage Protection
333
33
Overload Power Limiting
3
External Current Limit
33
33
Remote ON/OFF
333
Device Reset
3
*This table is only a partial list of many MULTI-FUNCTIONAL Pin Configurations that are possible.
Table 3. MULTI-FUNCTION (M) Pin Configuration Options.
www.powerint.com
11
Rev. H 06/13
11 Page |
Páginas | Total 30 Páginas | |
PDF Descargar | [ Datasheet TOP262EN.PDF ] |
Número de pieza | Descripción | Fabricantes |
TOP262EN | Integrated Off Line Switcher | Power Integrations |
Número de pieza | Descripción | Fabricantes |
SLA6805M | High Voltage 3 phase Motor Driver IC. |
Sanken |
SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
Analog Devices |
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |