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Below is the parameter table and instructions for the TOP268EG, a high-voltage, high-frequency power switch designed for off-line switching power supplies.

TOP268EG Parameter Table

Parameter	Symbol	Min	Typ	Max	Unit	Conditions
Supply Voltage	VCC	15	-	39	V	-
Output Power	POUT	-	60	-	W	-
Switching Frequency	fSW	100	132	200	kHz	-
Peak Current Limit	ILIM	1.4	1.7	2.0	A	-
Thermal Shutdown Temperature	TSD	150	-	160	°C	-
Operating Temperature Range	TOPR	-40	-	125	°C	-
Storage Temperature Range	TSTG	-65	-	150	°C	-
Power Dissipation	PD	-	-	1.5	W	TJ = 25°C
Input Capacitance	CIN	-	100	-	pF	VDD = 400V, f = 1 MHz
Output Capacitance	COUT	-	50	-	pF	VDD = 400V, f = 1 MHz
Leakage Current	ILEAK	-	10	-	μA	VDD = 400V

Instructions for TOP268EG

1. Supply Voltage (VCC):

   • Ensure the supply voltage is within the range of 15V to 39V.
   • Do not exceed the maximum supply voltage to avoid damaging the device.

2. Output Power (POUT):

   • The typical output power is 60W. Design your circuit to handle this power level efficiently.

3. Switching Frequency (fSW):

   • The switching frequency ranges from 100kHz to 200kHz. Set the external components to achieve the desired frequency within this range.

4. Peak Current Limit (ILIM):

   • The peak current limit is between 1.4A and 2.0A. Use appropriate current sensing resistors to set the current limit.

5. Thermal Shutdown (TSD):

   • The device will shut down if the temperature exceeds 150°C to 160°C. Ensure proper heat dissipation and cooling.

6. Operating Temperature Range (TOPR):

   • The device operates reliably between -40°C and 125°C. Avoid operating outside this range.

7. Storage Temperature Range (TSTG):

   • Store the device between -65°C and 150°C to maintain its performance and reliability.

8. Power Dissipation (PD):

   • The maximum power dissipation at 25°C junction temperature is 1.5W. Ensure adequate thermal management to keep the junction temperature low.

9. Input and Output Capacitance (CIN, COUT):

   • Use capacitors with values close to 100pF and 50pF for input and output, respectively, to minimize parasitic effects.

10. Leakage Current (ILEAK):

    • The leakage current should be kept below 10μA to ensure stable operation. Use high-quality capacitors and resistors to minimize leakage.

Additional Notes:

• Always refer to the datasheet for detailed application notes and circuit diagrams.
• Ensure proper PCB layout and grounding to minimize noise and improve performance.
• Use appropriate safety measures when handling high voltages and power circuits.

This table and instructions should help you design and use the TOP268EG effectively in your power supply applications.

(For reference only)