TOP247YN Power Integrations Off-line Switcher IC
TOP247YN Power Integrations Off-line Switcher IC
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TOP Switch-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 features have been included to lower system costs while also improving design flexibility, performance, and energy efficiency. It has the following transparent characteristics: Soft start, 132 kHz switching frequency (automatically lowered at low load), frequency jittering for lower EMI, wider DCMAX, hysteretic thermal shutdown, and bigger creepage packages are also available. Furthermore, all essential parameters (such as current limit, frequency, and PWM gain) have tighter temperature and absolute tolerances to simplify design and save system cost.
Pinout
| 1 | CONTROL |
| 2 | LINE-SENSE |
| 3 | EXTERNAL CURRENT LIMIT |
| 4 | SOURCE |
| 5 | FREQUENCY |
| 6 | DRAIN |
Features
- No heatsink required up to 34 W using P/G packages
- Features eliminate or reduce the 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
Specifications
|
230 VAC ± 15% Adapter Open Frame |
85W 165W |
|
85-265 VAC -Adapter -Open Frame |
55W 125W |
| DRAIN Voltage | -0.3 V to 700 V |
| DRAIN Peak Current | 5.76 A |
| CONTROL Voltage | -0.3 V to 9 |
| V CONTROL Current | 100 mA |
| LINE SENSE Pin Voltage | -0.3 V to 9 V |
| FREQUENCY Pin Voltage | -0.3 V to 9 V |
| Storage Temperature | -65 °C to 150 °C |
| Operating Junction Temperature | -40 °C to 150 °C |
| Switching Frequency |
FREQUENCY Pin Connected to SOURCE 124 - 140kHz FREQUENCY Pin Connected to CONTROL 61.5 - 70.5kHz |
| FREQUENCY Pin Threshold Voltage | 2.9V |
| FREQUENCY Pin Input Current | 10 - 100 µA |
| Country of Origin | China |
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T&C Apply.
T&C Apply.
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