Details

---

BUY TOP256MN https://www.utsource.net/itm/p/5316000.html
Enhanced EcoSmart, Integrated Off-Line Switcher with Advanced Feature Set and Extended Power Range

Parameter	Symbol	Min	Typ	Max	Unit
Input Voltage	VIN	18	-	370	V
Output Voltage	VOUT	2.5	-	24	V
Output Current	IOUT	-	6	-	A
Switching Frequency	fSW	65	-	132	kHz
Efficiency	η	-	90	-	%
Power Dissipation	PD	-	-	15	W
Operating Temperature	Toper	-40	-	125	°C
Storage Temperature	Tstg	-65	-	150	°C
Junction Temperature	Tj	-40	-	150	°C
Thermal Resistance	RθJC	-	2.0	-	°C/W

Instructions for TOP256MN

1. Circuit Design:

   • Ensure that the input voltage (VIN) is within the specified range of 18V to 370V.
   • Design the output circuit to maintain the desired output voltage (VOUT) between 2.5V and 24V.
   • The output current (IOUT) should not exceed 6A.

2. Component Selection:

   • Choose appropriate inductors, capacitors, and diodes based on the switching frequency (fSW) and power requirements.
   • Use high-quality components to ensure reliability and efficiency.

3. Thermal Management:

   • Ensure adequate heat dissipation to keep the junction temperature (Tj) below 150°C.
   • Consider using a heatsink if necessary, especially if operating at high power levels or in high ambient temperatures.

4. Layout and Assembly:

   • Follow good PCB layout practices to minimize parasitic inductance and capacitance.
   • Place the TOP256MN close to the input and output capacitors to reduce noise and improve performance.
   • Ensure proper grounding and shielding to prevent electromagnetic interference (EMI).

5. Testing and Troubleshooting:

   • Test the circuit under various load conditions to verify stability and efficiency.
   • Monitor the temperature of the TOP256MN and other critical components during operation.
   • If issues arise, check for proper connections, component values, and thermal management.

6. Safety Precautions:

   • Always handle the TOP256MN with care to avoid damage from static electricity.
   • Ensure that the circuit is properly insulated to prevent electrical shock.
   • Follow all relevant safety standards and regulations when designing and testing the circuit.

(For reference only)