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TOP249G

Power Integrations
Part Number TOP249G
Manufacturer Power Integrations
Description Integrated Off-line Switcher
Published Jul 7, 2006
Detailed Description www.DataSheet4U.com TOP242-250 TOPSwitch -GX Family Extended Power, Design Flexible, ® EcoSmart, Integrated Off-line Sw...
Datasheet PDF File TOP249G PDF File

TOP249G
TOP249G

Overview
www.
DataSheet4U.
com 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 30 W using P package • 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 • 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/F packages for video applications • Hysteretic thermal shutdown for automatic fault recovery • Large thermal hysteresis prevents PC board overheating AC IN + DC OUT - ® D L CONTROL TOPSwitch-GX S X F C PI-2632-060200 Figure 1.
Typical Flyback Application.
OUTPUT POWER TABLE 230 VAC ±15%4 85-265 VAC Adapter1 Open Frame2 PRODUCT3 Adapter1 Open Frame2 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 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.
ww.
DataSheet4U.
com Depending on package type, either 1 or 3 additional pins over t...


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