Details

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BUY UCC28515DW https://www.utsource.net/itm/p/12606016.html

Parameter	Symbol	Min	Typ	Max	Unit	Conditions/Notes
Input Voltage Range	VIN	10	-	60	V	Start-up and operating range
Quiescent Supply Current	IQ	-	2.5	-	mA	At startup, VIN = 40V
Switching Frequency	fSW	-	70	-	kHz	Nominal switching frequency
Maximum Duty Cycle	DMAX	-	0.8	-		Limit to prevent saturation
Minimum On-Time	tONmin	-	300	-	ns	Sets minimum pulse width
Line Undervoltage Lockout	UVLO	9	-	10	V	VIN threshold for shutdown
Line Overvoltage Protection	OVP	60	-	65	V	VIN threshold for shutdown
Load Open Circuit Protection	OCP	-	-	-	A	Automatically set by internal circuitry
Thermal Shutdown Temperature	胃SD	150	-	-	掳C	Device enters thermal shutdown

Instructions for UCC28515DW:

1. Power Supply Connection:

   • Connect the input voltage (VIN) within the specified range of 10V to 60V.
   • Ensure the quiescent supply current does not exceed 2.5mA during startup.

2. Switching Configuration:

   • Set up the switching frequency around 70kHz for optimal performance.
   • Adjust the duty cycle not to exceed 80% to avoid magnetic core saturation.

3. Protection Mechanisms:

   • The device has built-in undervoltage lockout (UVLO) that will shut down the device if VIN drops below 9V to 10V.
   • Overvoltage protection (OVP) will trigger a shutdown if VIN exceeds 60V to 65V.
   • An open circuit on the load will activate the load open circuit protection (OCP).

4. Thermal Management:

   • Monitor the device temperature; it will enter thermal shutdown if it reaches 150掳C.

5. Minimum Pulse Width:

   • Ensure the minimum on-time is set to at least 300ns to maintain stable operation.

These parameters and instructions are designed to ensure reliable operation and longevity of the UCC28515DW in various applications.

(For reference only)