Details

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BUY TOP265KG https://www.utsource.net/itm/p/12607575.html

Parameter	Symbol	Min	Typ	Max	Unit	Description
Input Voltage	VIN	100	-	277	V	Operating input voltage range
Output Voltage	VOUT	-	5	-	V	Typical output voltage
Output Current	IOUT	-	5.5	-	A	Maximum continuous output current
Switching Frequency	fSW	-	132	-	kHz	Fixed switching frequency
Power Dissipation	PD	-	-	80	W	Maximum power dissipation at 25掳C ambient temperature
Efficiency	畏	-	88	-	%	Typical efficiency at full load
Standby Power	Pstand	-	0.3	-	W	Typical standby power consumption
Start-Up Time	tSTART	-	400	-	ms	Typical start-up time from power-on to regulation
Thermal Shutdown	TSD	-	160	-	掳C	Thermal shutdown temperature
Protection Features	-	-	-	-	-	Overvoltage protection, undervoltage lockout, short-circuit protection

Instructions for Using TOP265KG

1. Input Voltage (VIN):

   • Ensure the input voltage is within the specified range of 100V to 277V.
   • Use appropriate input filtering and transient protection to avoid damage.

2. Output Voltage (VOUT):

   • The typical output voltage is 5V. Adjust the feedback network if a different output voltage is required.
   • Verify the output voltage with a multimeter before connecting the load.

3. Output Current (IOUT):

   • The maximum continuous output current is 5.5A. Ensure the load does not exceed this limit to prevent overheating or damage.
   • Use a heatsink if operating near the maximum current to improve thermal performance.

4. Switching Frequency (fSW):

   • The fixed switching frequency is 132kHz. This is optimized for efficiency and EMI performance.
   • Do not attempt to modify the switching frequency as it can affect performance and reliability.

5. Power Dissipation (PD):

   • The maximum power dissipation is 80W at 25掳C ambient temperature.
   • Use adequate cooling solutions (heatsinks, fans) if operating in high-temperature environments.

6. Efficiency (畏):

   • The typical efficiency at full load is 88%. Monitor the efficiency to ensure optimal performance.
   • High efficiency reduces heat generation and improves overall system reliability.

7. Standby Power (Pstand):

   • The typical standby power consumption is 0.3W. This is important for energy-saving applications.
   • Ensure the standby power is within acceptable limits for your application.

8. Start-Up Time (tSTART):

   • The typical start-up time from power-on to regulation is 400ms.
   • Allow sufficient time for the device to stabilize before connecting the load.

9. Thermal Shutdown (TSD):

   • The thermal shutdown temperature is 160掳C. The device will automatically shut down to prevent damage.
   • Ensure proper ventilation and cooling to avoid reaching this temperature.

10. Protection Features:

    • The device includes overvoltage protection, undervoltage lockout, and short-circuit protection.
    • These features help protect the device and connected components from faults and damage.

Additional Notes:

• Always refer to the datasheet for detailed specifications and application notes.
• Follow good PCB layout practices to minimize noise and improve performance.
• Regularly inspect the device and connections for signs of wear or damage.

(For reference only)