TOPSwitch-HX

Enhanced EcoSmart®, Integrated Off-Line Switcher with Advanced Feature Set and Extended Power Range
topSwitchHX.gif
Typical Flyback Application

Description:

TOPSwitch-HX 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.

Lower System Cost, Higher Design Flexibility

  • Multi-mode operation maximizes efficiency at all loads
  • New eSIP-7C and eSIP-7F packages build on PI’s experience with high power and high reliability packages
  • No heatsink required up to 35 W (up to 48 W at 230 VAC) using P, G or M packages
  • Output overvoltage protection (OVP) is user programmable for latching/non-latching shutdown with fast AC reset
  • 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 packages) reduces transformer and power supply size (half frequency option for video applications)
  • Tight I2f parameter tolerance reduces system cost
  • Frequency jittering reduces EMI filter cost
  • Heatsink 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

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

eSIP™ (E) Package (eSIP Package Information)

  • Low junction-to-case thermal impedance (2 °C per watt)
  • Low height is ideal for adapters where space is limited
  • Simple clip-mounted heatsink reduces manufacturing cost

Applications:

  • LCD monitors
  • Personal computers
  • Small servers
  • Laptop adapters
  • Set-top boxes
  • Digital TVs
  • Printers
  • DVD Players and Recorders
  • UPS
  • Video Games
  • Broadband Modems
  • Cellular phone adapters
  • Audio Amplifiers


Output Power (Watts)
PRODUCT5 230 VAC ±15% 85-265 VAC
Adpt.1 OF2 Peak3 Adpt. OF Peak
TOP252PN
TOP252GN
TOP252MN
9 15 21 6 10 13
TOP253PN
TOP253GN
TOP253MN
15 25 38
38
43
9 15 25
25
29
TOP254PN
TOP254GN
TOP254MN
16 28 47
47
62
11 20 30
30
40
TOP255PN
TOP255GN
TOP255MN
19 30 54
54
81
13 22 35
35
52
TOP256PN
TOP256GN
TOP256MN
21 34 63
63
98
15 26 40
40
64
TOP257PN
TOP257GN
TOP257MN
25 41 70
70
119
19 30 45
45
78
TOP258PN
TOP258GN
TOP258MN
29 48 77
77
140
22 35 50
50
92
PRODUCT 230 VAC ±15% 85-265 VAC
Adapt.1 OF2 Adapt. OF
TOP252EN
TOP252EG
10 21 6 13
TOP253EN
TOP253EG
21 43 13 29
TOP254EN
TOP254YN
TOP254EG
30 62 20 43
TOP255EN
TOP255YN
TOP255EG
40 81 26 57
TOP255LN 40 81 26 57
TOP256EN
TOP256YN
TOP256EG
60 119 40 86
TOP256LN 60 88 40 64
TOP257EN
TOP257YN
TOP257EG
85 157 55 119
TOP257LN 85 105 55 78
TOP258EN
TOP258YN
TOP258EG
105 195 70 148
TOP258LN 105 122 70 92
TOP259EN
TOP259YN
TOP259EG
128 238 80 171
TOP259LN 128 162 80 120
TOP260EN
TOP260YN
TOP260EG
147 275 93 200
TOP260LN
147
190 93 140
TOP261EN
TOP261YN
TOP261EG
177 333 118 254
TOP261LN
177 244 118
177
TOP262EN
177
333 118
254
TOP262LN
177
244 118
177

Notes:

  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: E: eSIP-7C, G: SMD-8C, L: eSIP-7F,
    M: SDIP-10C, P: DIP-8C, Y: TO-220-7C.

Product Documents
Application Notes an43.pdf AN-43
Package Information packageinfo.pdf
Data Sheet tophx_family_datasheet.pdf

Reference Designs*
RDK-142 35 W Universal Input, Two-Output (12 V, 2 A and 5V, 2.2A) LCD Monitor Power Supply with >82% full load efficiency and no-load power consumption < 300 mW at 230 VAC

* DAKs/RDKs include a working power supply, sample devices, unpopulated pcb, data sheet, comprehensive engineering report, PI Expert design software and other related documentation.

Visit the Design Examples page for additional circuits using this product family.