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TOP242-249

Features: Lower System Cost, High Design Flexibility• Extended power range to 250 W• Features eliminate or reduce cost of external components• Fully integrated soft-start for minimum stress/overshoot• Externally programmable accurate current limit• Wider duty cycle fo...

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TOP242-249: Features: Lower System Cost, High Design Flexibility• Extended power range to 250 W• Features eliminate or reduce cost of external components• Fully integrated soft-start for minim...

TOP242-249 Data Sheet

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Part Number:
TOP242-249
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2025/1/11

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Product Details

Description



Features:

Lower System Cost, High Design Flexibility
• Extended power range to 250 W
• 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 packages
• Line under-voltage (UV) detection: no turn off glitches
• Line overvoltage (OV) shutdown extends line surge limit
• Line feed forward with maximum duty cycle (DCMAX) reduction rejects line ripple and limits DCMAX at high line
• Frequency jittering reduces EMI and EMI filtering costs
• Regulates to zero load without dummy loading
• 132 kHz frequency reduces transformer/power supply size
• Half frequency option in Y/R 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 @ 110 VAC, 160 mW @ 230 VAC)
• Frequency lowered with load for high standby efficiency
• Allows shutdown/wake-up via LAN/input port


Specifications

DRAIN Voltage ............................................ -0.3 to 700 V
DRAIN Peak Current: TOP242 ............................... 0.72 A
                                  TOP243 ............................... 1.44 A
                                  TOP244 ............................... 2.16 A
                                  TOP245 ............................... 2.88 A
                                  TOP246 ............................... 4.32 A
                                  TOP247 ............................... 5.76 A
                                  TOP248 ............................... 7.20 A
                                  TOP249 ............................... 8.64 A
CONTROL Voltage ........................................... -0.3 to 9 V
CONTROL Current .................................................100 mA
LINE SENSE Pin Voltage .................................. -0.3 to 9 V
CURRENT LIMIT Pin Voltage ......................... -0.3 to 4.5 V
MULTI-FUNCTION Pin Voltage ......................... -0.3 to 9 V
FREQUENCY Pin Voltage .................................. -0.3 to 9 V
Storage Temperature ................................... -65 to 150
Operating Junction Temperature (2) ............. -40 to 150
Lead Temperature (3) ............................................. 260
Notes:
1. All voltages referenced to SOURCE, TA = 25
2. Normally limited by internal circuitry.
3. 1/16" from case for 5 seconds.


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, the TOPSwitch-GX family has either 1 or 3 additional pins over the standard DRAIN, SOURCE and CONTROL terminals. allowing the following functions: line sensing (OV/UV, line feedforward/DC max reduction), accurate externally set current limit, remote on/off, and synchronization to an external lower frequency and frequency selection (132 kHz/66 kHz).

All package types of TOPSwitch-GX provide the following transparent features:Soft-start, 132 kHz switching frequency (automatically reduced at light load), frequency jittering for lower EMI, wider DCMAX,hysteretic thermal shutdown and larger creepage packages. In addition, all critical parameters (i.e. current limit, frequency,PWM gain) have tighter temperature and absolute tolerance, to simplify design and optimize system cost.




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