Details

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BUY L6563H https://www.utsource.net/itm/p/4618114.html
High voltage start-up transition-mode PFC

Parameter	Symbol	Min	Typical	Max	Unit	Conditions
Supply Voltage	Vcc	10	-	40	V	-
Switching Frequency	fsw	-	100	500	kHz	-
Maximum Duty Cycle	Dmax	-	99.7	-	%	-
Current Limit Threshold	ILIM	0.2	-	1.8	A	Vcs = 0.2V
Soft-Start Time	tss	-	3.5	-	ms	-
Overcurrent Protection Threshold	Iocp	1.2	-	2.4	A	-
Thermal Shutdown Temperature	TSD	-	165	-	°C	-
Operating Junction Temperature	Tjop	-25	-	150	°C	-
Storage Temperature Range	Tstg	-40	-	150	°C	-

Instructions for Using L6563H

1. Supply Voltage (Vcc):

   • The L6563H operates with a supply voltage range from 10V to 40V. Ensure the input voltage is within this range to avoid damage to the device.

2. Switching Frequency (fsw):

   • The switching frequency can be set between 100kHz and 500kHz. Adjust the external resistor and capacitor values to achieve the desired frequency.

3. Maximum Duty Cycle (Dmax):

   • The maximum duty cycle is 99.7%. This ensures that the device does not enter a continuous conduction mode, which could lead to overheating or instability.

4. Current Limit Threshold (ILIM):

   • The current limit threshold is adjustable from 0.2A to 1.8A. Set the threshold by adjusting the external sense resistor to ensure proper current regulation.

5. Soft-Start Time (tss):

   • The soft-start time is typically 3.5ms. This helps to reduce inrush current and prevent voltage spikes during startup.

6. Overcurrent Protection (Iocp):

   • The overcurrent protection threshold is set between 1.2A and 2.4A. This feature protects the device from excessive current draw, which could damage the circuit.

7. Thermal Shutdown (TSD):

   • The thermal shutdown temperature is 165°C. If the junction temperature exceeds this value, the device will shut down to prevent damage.

8. Operating Junction Temperature (Tjop):

   • The operating junction temperature range is from -25°C to 150°C. Ensure the device operates within this range to maintain reliability.

9. Storage Temperature Range (Tstg):

   • The storage temperature range is from -40°C to 150°C. Store the device in this range to prevent degradation of performance.

Additional Notes:

• Always refer to the datasheet for detailed information and specific application notes.
• Proper heat sinking is recommended to manage thermal conditions, especially in high-power applications.
• Use appropriate decoupling capacitors to stabilize the power supply and reduce noise.

(For reference only)