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
Output Power Table
Product
5
AC
IN
+
DC
OUT
-
D
V
CONTROL
TOPSwitch-HX
S
C
X
F
PI-4510-100206
Figure 1.
•
•
•
•
•
Typical Flyback Application.
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
TOP252PN/GN
TOP252MN
TOP253PN/GN
TOP253MN
TOP254PN/GN
TOP254MN
TOP255PN/GN
TOP255MN
TOP256PN/GN
TOP256MN
TOP257PN/GN
TOP257MN
TOP258PN/GN
TOP258MN
Table 1.
230 VAC ±15%
4
Open
Adapter
1
Peak
3
Frame
2
21 W
9W
15 W
21 W
15 W
25 W
38 W
43 W
47 W
62 W
54 W
81 W
63 W
98 W
70 W
119 W
77 W
140 W
85-265 VAC
Open
Adapter
1
Frame
2
6W
10 W
Peak
3
13 W
13 W
25 W
29 W
30 W
40 W
35 W
52 W
40 W
64 W
45 W
78 W
50 W
92 W
Product
5
TOP252EN/EG
TOP253EN/EG
TOP254EN/YN/EG
TOP255EN/YN/EG
TOP255LN
TOP256EN/YN/EG
TOP256LN
TOP257EN/YN/EG
TOP257LN
TOP258EN/YN/EG
TOP258LN
TOP259EN/YN/EG
TOP259LN
TOP260EN/YN/EG
TOP260LN
TOP261EN/YN/EG
TOP261LN
TOP262EN
6
TOP262LN
6
9W
15 W
16 W
28 W
11 W
20 W
19 W
30 W
13 W
22 W
21 W
34 W
15 W
26 W
25 W
41 W
19 W
30 W
29 W
48 W
22 W
35 W
230 VAC ±15%
85-265 VAC
Open
Open
Adapter
1
Adapter
1
Frame
2
Frame
2
10 W
21 W
6W
13 W
21 W
43 W
13 W
29 W
30 W
62 W
20 W
43 W
40 W
81 W
26 W
57 W
40 W
81 W
26 W
57 W
60 W
119 W
40 W
86 W
60 W
88 W
40 W
64 W
85 W
157 W
55 W
119 W
85 W
105 W
55 W
78 W
105 W
195 W
70 W
148 W
105 W
122 W
70 W
92 W
128 W
238 W
80 W
171 W
128 W
162 W
80 W
120 W
147 W
275 W
93 W
200 W
147 W
190 W
93 W
140 W
177 W
333 W
118 W
254 W
177 W
244 W
118 W
177 W
177 W
333 W
118 W
254 W
177 W
244 W
118 W
177 W
Output Power Table. (for notes see page 2).
www.powerint.com
June 2013
TOP252-262
EcoSmart
™
– Energy Efficient
•
Energy efficient over entire load range
•
No-load consumption
•
Less than 200 mW at 230 VAC
•
Standby power for 1 W input
•
>600 mW output at 110 VAC input
•
>500 mW output at 265 VAC input
Y Package Option for TOP259-261
In order to improve noise-immunity on large TOPSwitch-HX
Y package parts, the F pin has been removed (TOP259-261YN
are fixed at 66 kHz switching frequency) and replaced with a
SIGNAL GROUND (G) pin. This pin acts as a low noise path for
the C pin capacitor and the X pin resistor. It is only required for
the TOP259-261YN package parts.
Description
TOPSwitch-HX cost effectively incorporates a 700 V power
MOSFET, high voltage switched current source, PWM control,
oscillator, thermal shutdown circuit, fault protection and other
control circuitry onto a monolithic device.
Notes for Table 1:
1. Minimum continuous power in a typical non-ventilated
enclosed adapter measured at +50 °C ambient. Use of an
external heat sink will increase power capability.
2. Minimum continuous power in an open frame design at
+50 °C ambient.
3. Peak power capability in any design at +50 °C ambient.
4. 230 VAC or 110/115 VAC with doubler.
5. Packages: P: DIP-8C, G: SMD-8C, M: SDIP-10C,
Y: TO-220-7C, E: eSIP-7C, L: eSIP-7F.
See part ordering information.
6. TOP261 and TOP262 have the same current limit set point. In
some applications TOP262 may run cooler than TOP261 due
to a lower R
DS(ON)
for the larger device.
AC
IN
+
DC
OUT
-
D
V
CONTROL
TOPSwitch-HX
S
C
X
G
PI-4973-122607
Figure 2.
Typical Flyback Application TOP259YN, TOP260YN and TOP261YN.
2
Rev. H 06/13
www.powerint.com
TOP252-262
Section List
Functional Block Diagram
....................................................................................................................................... 4
Pin Functional Description
...................................................................................................................................... 6
TOPSwitch-HX Family Functional Description
....................................................................................................... 7
CONTROL (C) Pin Operation .................................................................................................................................... 8
Oscillator and Switching Frequency.......................................................................................................................... 8
Pulse Width Modulator ............................................................................................................................................ 9
Maximum Load Cycle .............................................................................................................................................. 9
Error Amplifier .......................................................................................................................................................... 9
On-Chip Current Limit with External Programmability ............................................................................................... 9
Line Undervoltage Detection (UV) ........................................................................................................................... 10
Line Overvoltage Shutdown (OV) ............................................................................................................................ 11
Hysteretic or Latching Output Overvoltage Protection (OVP)................................................................................... 11
Line Feed-Forward with DC
MAX
Reduction .............................................................................................................. 13
Remote ON/OFF and Synchronization.................................................................................................................... 13
Soft-Start ............................................................................................................................................................... 13
Shutdown/Auto-Restart ......................................................................................................................................... 13
Hysteretic Over-Temperature Protection ................................................................................................................. 13
Bandgap Reference ............................................................................................................................................... 13
High-Voltage Bias Current Source .......................................................................................................................... 13
Typical Uses of FREQUENCY (F) Pin
...................................................................................................................... 15
Typical Uses of VOLTAGE MONITOR (V) and EXTERNAL CURRENT LIMIT (X) Pins
.......................................... 16
Typical Uses of MULTI-FUNCTION (M) Pin
........................................................................................................... 18
Application Examples
.............................................................................................................................................. 21
A High Efficiency, 35 W, Dual Output – Universal Input Power Supply ..................................................................... 21
A High Efficiency, 150 W, 250-380 VDC Input Power Supply .................................................................................. 22
A High Efficiency, 20 W Continuous – 80 W Peak, Universal Input Power Supply ................................................... 23
A High Efficiency, 65 W, Universal Input Power Supply ........................................................................................... 24
Key Application Considerations
.............................................................................................................................. 25
TOPSwitch-HX vs.TOPSwitch-GX
.......................................................................................................................
. 25
TOPSwitch-HX Design Considerations .................................................................................................................. 26
TOPSwitch-HX Layout Considerations ................................................................................................................... 27
Quick Design Checklist .......................................................................................................................................... 31
Design Tools .......................................................................................................................................................... 31
Product Specifications and Test Conditions
.......................................................................................................... 32
Typical Performance Characteristics
.................................................................................................................... 39
Package Outlines
.................................................................................................................................................... 43
Part Ordering Information
........................................................................................................................................ 47
3
www.powerint.com
Rev. H 06/13
TOP252-262
V
C
CONTROL (C)
Z
C
SHUNT REGULATOR/
ERROR AMPLIFIER
-
+
0
1
INTERNAL
SUPPLY
-
DRAIN (D)
+
5.8 V
4.8 V
-
SOFT START
K
PS(UPPER)
+
5.8 V
I
FB
CURRENT
LIMIT
ADJUST
VI
(LIMIT)
INTERNAL UV
COMPARATOR
-
+
ON/OFF
√
16
SHUTDOWN/
AUTO-RESTART
STOP LOGIC
HYSTERETIC
THERMAL
SHUTDOWN
STOP
DC
MAX
SOFT
START
K
PS(LOWER)
-
+
V
BG
+ V
T
MULTI-
FUNCTION (M)
CURRENT LIMIT
COMPARATOR
SOURCE (S)
CONTROLLED
TURN-ON
GATE DRIVER
V
OVP
LINE
SENSE
OV/
UV
DC
MAX
OSCILLATOR
WITH JITTER
F REDUCTION
D
MAX
CLOCK
S
R
Q
LEADING
EDGE
BLANKING
F REDUCTION
SOFT START
I
FB
PWM
I
PS(UPPER)
I
PS(LOWER)
OFF
K
PS(UPPER)
K
PS(LOWER)
SOURCE (S)
PI-4508-120307
Figure 3a.
Functional Block Diagram (P and G Packages).
V
C
CONTROL (C)
0
1
INTERNAL
SUPPLY
-
Z
C
SHUNT REGULATOR/
ERROR AMPLIFIER
-
+
DRAIN (D)
+
5.8 V
4.8 V
-
SOFT START
K
PS(UPPER)
+
5.8 V
I
FB
CURRENT
LIMIT
ADJUST
VI
(LIMIT)
INTERNAL UV
COMPARATOR
-
+
ON/OFF
√
16
SHUTDOWN/
AUTO-RESTART
STOP LOGIC
HYSTERETIC
THERMAL
SHUTDOWN
STOP
DC
MAX
SOFT
START
K
PS(LOWER)
-
+
EXTERNAL
CURRENT
LIMIT (X)
VOLTAGE
MONITOR (V)
V
BG
+ V
T
CURRENT LIMIT
COMPARATOR
SOURCE (S)
CONTROLLED
TURN-ON
GATE DRIVER
1V
V
LINE
SENSE
OVP OV/
UV
DC
MAX
OSCILLATOR
WITH JITTER
F REDUCTION
D
MAX
CLOCK
S
R
Q
LEADING
EDGE
BLANKING
F REDUCTION
SOFT START
I
FB
PWM
I
PS(UPPER)
I
PS(LOWER)
OFF
K
PS(UPPER)
K
PS(LOWER)
SOURCE (S)
PI-4643-082907
Figure 3b. Functional Block Diagram (M Package).
4
Rev. H 06/13
www.powerint.com
TOP252-262
V
C
CONTROL (C)
Z
C
SHUNT REGULATOR/
ERROR AMPLIFIER
-
+
I
FB
CURRENT
LIMIT
ADJUST
VI
(LIMIT)
0
1
INTERNAL
SUPPLY
-
DRAIN (D)
+
5.8 V
4.8 V
-
SOFT START
K
PS(UPPER)
+
5.8 V
INTERNAL UV
COMPARATOR
-
+
ON/OFF
√
16
SHUTDOWN/
AUTO-RESTART
STOP LOGIC
HYSTERETIC
THERMAL
SHUTDOWN
STOP
DC
MAX
66k/132k
SOFT
START
K
PS(LOWER)
-
+
EXTERNAL
CURRENT
LIMIT (X)
VOLTAGE
MONITOR (V)
V
BG
+ V
T
CURRENT LIMIT
COMPARATOR
SOURCE (S)
CONTROLLED
TURN-ON
GATE DRIVER
1V
V
LINE
SENSE
OVP OV/
UV
DC
MAX
OSCILLATOR
WITH JITTER
F REDUCTION
D
MAX
CLOCK
S
R
Q
LEADING
EDGE
BLANKING
FREQUENCY
(F)
F REDUCTION
SOFT START
I
FB
PWM
I
PS(UPPER)
I
PS(LOWER)
OFF
K
PS(UPPER)
K
PS(LOWER)
SOURCE (S)
PI-4511-082907
Figure 3c. Functional Block Diagram (TOP254-258 YN Package and all eSIP Packages).
V
C
CONTROL (C)
Z
C
SHUNT REGULATOR/
ERROR AMPLIFIER
-
+
0
1
INTERNAL
SUPPLY
-
DRAIN (D)
+
5.8 V
4.8 V
-
SOFT START
K
PS(UPPER)
+
5.8 V
I
FB
CURRENT
LIMIT
ADJUST
VI
(LIMIT)
INTERNAL UV
COMPARATOR
-
+
ON/OFF
√
16
SHUTDOWN/
AUTO-RESTART
STOP LOGIC
HYSTERETIC
THERMAL
SHUTDOWN
STOP
DC
MAX
SOFT
START
K
PS(LOWER)
-
+
EXTERNAL
CURRENT
LIMIT (X)
VOLTAGE
MONITOR (V)
V
BG
+ V
T
CURRENT LIMIT
COMPARATOR
SOURCE (S)
CONTROLLED
TURN-ON
GATE DRIVER
1V
V
LINE
SENSE
OVP OV/
UV
DC
MAX
OSCILLATOR
WITH JITTER
F REDUCTION
D
MAX
CLOCK
S
R
Q
LEADING
EDGE
BLANKING
SOURCE (S)
F REDUCTION
SOFT START
I
FB
PWM
I
PS(UPPER)
I
PS(LOWER)
OFF
K
PS(UPPER)
K
PS(LOWER)
PI-4974-122607
SIGNAL
GROUND (G)
Figure 3d. Functional Block Diagram TOP259YN, TOP260YN, TOP261YN.
5
www.powerint.com
Rev. H 06/13
模拟电子
