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Off-line Switcher. TOP250F Datasheet

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Off-line Switcher. TOP250F Datasheet






TOP250F Switcher. Datasheet pdf. Equivalent






TOP250F Switcher. Datasheet pdf. Equivalent


TOP250F

Part

TOP250F

Description

Integrated Off-line Switcher



Feature


www.DataSheet4U.com TOP242-250 TOPSwitc h -GX Family Extended Power, Design Fle xible, ® EcoSmart, Integrated Off-line Switcher Product Highlights Lower Syst em Cost, High Design Flexibility • Ex tended power range for higher power app lications • No heatsink required up t o 30 W using P package • Features eli minate or reduce cost of external compo nents • Fully integrated .
Manufacture

Power Integrations

Datasheet
Download TOP250F Datasheet


Power Integrations TOP250F

TOP250F; soft-start for minimum stress/overshoot • Externally programmable accurate cu rrent limit • Wider duty cycle for mo re power, smaller input capacitor • S eparate line sense and current limit pi ns on Y/R/F packages • Line under-vol tage (UV) detection: no turn off glitch es • Line overvoltage (OV) shutdown e xtends line surge limit • Line feed f orward with maximum duty cycle.


Power Integrations TOP250F

(DCMAX) reduction rejects line ripple a nd limits DCMAX at high line • Freque ncy jittering reduces EMI and EMI filte ring costs • Regulates to zero load w ithout dummy loading • 132 kHz freque ncy reduces transformer/power supply si ze • Half frequency option in Y/R/F p ackages for video applications • Hyst eretic thermal shutdown for automatic f ault recovery • Large therma.

Part

TOP250F

Description

Integrated Off-line Switcher



Feature


www.DataSheet4U.com TOP242-250 TOPSwitc h -GX Family Extended Power, Design Fle xible, ® EcoSmart, Integrated Off-line Switcher Product Highlights Lower Syst em Cost, High Design Flexibility • Ex tended power range for higher power app lications • No heatsink required up t o 30 W using P package • Features eli minate or reduce cost of external compo nents • Fully integrated .
Manufacture

Power Integrations

Datasheet
Download TOP250F Datasheet




 TOP250F
TOP242-250
TOPSwitch®-GX Family
Extended Power, Design Flexible,
EcoSmart,® Integrated Off-line Switcher
Product Highlights
Lower System Cost, High Design Flexibility
• Extended power range for higher power applications
• No heatsink required up to 34 W using P/G packages
• Features eliminate or reduce cost of external components
• Fully integrated soft-start for minimum stress/overshoot
• Externally programmable accurate current limit
• Wider duty cycle for more power, smaller input capacitor
• Separate line sense and current limit pins on Y/R/F packages
• Line under-voltage (UV) detection: no turn off glitches
• Line overvoltage (OV) shutdown extends line surge limit
LFreridnequeucfteeineodcn-yrfeojijrtewtceatrsrindlignwerietrhdipumpcleaexs aiEmnMdumlIimadniudtstyEDcMCyIcMlAfieXl(taeDtrCihniMggAhcX)olisntes
• Regulates to zero load without dummy loading
• 132 kHz frequency reduces transformer/power supply size
• Half frequency option in Y/R/F packages for video applications
• Hysteretic thermal shutdown for automatic fault recovery
• Large thermal hysteresis prevents PC board overheating
EcoSmart Energy Efficient
• Extremely low consumption in remote off mode
(80 mW at 110 VAC, 160 mW at 230 VAC)
• Frequency lowered with load for high standby efficiency
• Allows shutdown/wake-up via LAN/input port
Description
TOPSwitch-GX uses the same proven topology as TOPSwitch,
cost effectively integrating the high voltage power MOSFET,
PWM control, fault protection and other control circuitry onto
a single CMOS chip. Many new functions are integrated to
reduce system cost and improve design flexibility, performance
and energy efficiency.
Depending on package type, either 1 or 3 additional pins over
the TOPSwitch standard DRAIN, SOURCE and CONTROL
terminals allow the following functions: line sensing (OV/UV,
cliunrerefneteldi-mfoitr,wreamrdo/DteCOMNAX/OreFdFu, cstyionnch),roanciczuartaioten
externally set
to an external
lower frequency, and frequency selection (132 kHz/66 kHz).
All package types provide the following transparent features:
Soft-start, 132 kHz switching frequency (automatically reduced
ahtylsitgehret tliocatdh)e,rfmreaqlusehnuctydojiwttenr,ianngdfolarrlgoewr ecrreEeMpaIg,ewpidacekr aDgCesM.AIXn,
addition, all critical parameters (i.e. current limit, frequency,
PWM gain) have tighter temperature and absolute tolerances
to simplify design and optimize system cost.
+
AC DC
IN OU-T
DL
TOPSwitch-GX
CONTROL
C
S XF
Figure 1. Typical Flyback Application.
PI-2632-060200
OUTPUT POWER TABLE
PRODUCT3
230 VAC ±15%4
85-265 VAC
Adapter1
Open
Frame2
Adapter1
Open
Frame2
TOP242 P or G
TOP242 R
TOP242 Y or F
TOP243 P or G
TOP243 R
TOP243 Y or F
TOP244 P or G
TOP244 R
TOP244 Y or F
TOP245 P or G
TOP245 R
TOP245 Y or F
TOP246 P or G
TOP246 R
TOP246 Y or F
TOP247 R
TOP247 Y or F
TOP248 R
TOP248 Y or F
TOP249 R
TOP249 Y or F
TOP250 R
TOP250 Y or F
9W
15 W
10 W
13 W
29 W
20 W
16 W
34 W
30 W
19 W
37 W
40 W
21 W
40 W
60 W
42 W
85 W
43 W
105 W
44 W
120 W
45 W
135 W
15 W
22 W
22 W
25 W
45 W
45 W
28 W
50 W
65 W
30 W
57 W
85 W
34 W
64 W
125 W
70 W
165 W
75 W
205 W
79 W
250 W
82 W
290 W
6.5 W
11 W
7W
9W
17 W
15 W
11 W
20 W
20 W
13 W
23 W
26 W
15 W
26 W
40 W
28 W
55 W
30 W
70 W
31 W
80 W
32 W
90 W
10 W
14 W
14 W
15 W
23 W
30 W
20 W
28 W
45 W
22 W
33 W
60 W
26 W
38 W
90 W
43 W
125 W
48 W
155 W
53 W
180 W
55 W
210 W
Table 1. Notes: 1. Typical continuous power in a non-ventilated enclosed
adapter measured at 50 °C ambient. 2. Maximum practical continuous
power in an open frame design at 50 °C ambient. See Key Applications
for detailed conditions. 3. For lead-free package options, see Part
Ordering Information. 4. 230 VAC or 100/115 VAC with doubler.
November 2005




 TOP250F
TOP242-250
Section List
Functional Block Diagram ....................................................................................................................................... 3
Pin Functional Description ...................................................................................................................................... 4
TOPSwitch-GX Family Functional Description ....................................................................................................... 5
CONTROL (C) Pin Operation.................................................................................................................................. 6
Oscillator and Switching Frequency........................................................................................................................ 6
Pulse Width Modulator and Maximum Duty Cycle.................................................................................................. 7
Light Load Frequency Reduction ............................................................................................................................ 7
Error Amplifier ......................................................................................................................................................... 7
On-Chip Current Limit with External Programmability ............................................................................................ 7
Line Under-Voltage Detection (UV)......................................................................................................................... 8
Line Overvoltage Shutdown (OV) ........................................................................................................................... 8
Line Feed-Forward with DCMAX Reduction .............................................................................................................. 8
Remote ON/OFF and Synchronization ................................................................................................................... 9
Soft-Start................................................................................................................................................................. 9
Shutdown/Auto-Restart........................................................................................................................................... 9
Hysteretic Over-Temperature Protection................................................................................................................. 9
Bandgap Reference .............................................................................................................................................. 10
High-Voltage Bias Current Source ........................................................................................................................ 10
Using Feature Pins ................................................................................................................................................... 10
FREQUENCY (F) Pin Operation ........................................................................................................................... 10
LINE-SENSE (L) Pin Operation ............................................................................................................................ 10
EXTERNAL CURRENT LIMIT (X) Pin Operation.................................................................................................. 11
MULTI-FUNCTION (M) Pin Operation .................................................................................................................. 11
Typical Uses of FREQUENCY (F) Pin ...................................................................................................................... 14
Typical Uses of LINE-SENSE (L) and EXTERNAL CURRENT LIMIT (X) Pins ...................................................... 15
Typical Uses of MULTI-FUNCTION (M) Pin ........................................................................................................... 17
Application Examples .............................................................................................................................................. 20
A High Efficiency, 30 W, Universal Input Power Supply ........................................................................................ 20
A High Efficiency, Enclosed, 70 W, Universal Adapter Supply.............................................................................. 20
A High Efficiency, 250 W, 250-380 VDC Input Power Supply ............................................................................... 22
Multiple Output, 60 W, 185-265 VAC Input Power Supply .................................................................................... 23
Processor Controlled Supply Turn On/Off............................................................................................................. 24
Key Application Considerations ............................................................................................................................. 26
TOPSwitch-II vs. TOPSwitch-GX .......................................................................................................................... 26
TOPSwitch-FX vs. TOPSwitch-GX ....................................................................................................................... 28
TOPSwitch-GX Design Considerations ............................................................................................................... 28
TOPSwitch-GX Layout Considerations ................................................................................................................. 30
Quick Design Checklist ......................................................................................................................................... 32
Design Tools ......................................................................................................................................................... 32
Product Specifications and Test Conditions ......................................................................................................... 33
Typical Performance Characteristics .................................................................................................................... 40
Part Ordering Information ....................................................................................................................................... 46
Package Outlines ..................................................................................................................................................... 47
2O
11/05



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