Details

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Below is the parameter table and instructions for the SG2524BDW, a high-performance PWM controller IC.

SG2524BDW Parameter Table

Parameter	Symbol	Min	Typ	Max	Unit	Conditions
Supply Voltage	Vcc	10	15	30	V
Operating Temperature Range	Toper	-40		85	掳C
Storage Temperature Range	Tstg	-65		150	掳C
Output Current (High Side)	Ioh	400	500	600	mA	Vcc = 15V
Output Current (Low Side)	Iol	-600	-500	-400	mA	Vcc = 15V
Oscillator Frequency	fosc	10	100	500	kHz	External Resistor
Dead Time	tdead	0.5	1.0	1.5	渭s
Maximum Duty Cycle	Dmax	90			%
Minimum Duty Cycle	Dmin	0		10	%
Error Amplifier Gain	Aea	50	100	200	V/渭V
Reference Voltage	Vref	4.8	5.0	5.2	V
Shutdown Current	Ishutdown	0.1	0.5	1.0	mA	Vcc = 15V
Thermal Shutdown Temperature	Tshutoff	150			掳C

SG2524BDW Instructions

1. Supply Voltage (Vcc):

   • The IC operates with a supply voltage ranging from 10V to 30V. Ensure that the input voltage is within this range to avoid damage to the device.

2. Operating Temperature:

   • The operating temperature range is from -40掳C to 85掳C. Ensure that the ambient temperature does not exceed these limits to maintain reliable operation.

3. Output Current:

   • The high-side output current can source up to 600mA, while the low-side output current can sink up to 600mA. Ensure that the load connected to the outputs is within these limits.

4. Oscillator Frequency:

   • The oscillator frequency can be set by an external resistor. The typical range is from 10kHz to 500kHz. Use the formula ( f_ = frac{1.1}{R_ times C_} ) to calculate the required resistor value.

5. Dead Time:

   • The dead time between the high-side and low-side outputs is adjustable and typically ranges from 0.5渭s to 1.5渭s. This helps prevent shoot-through current in half-bridge configurations.

6. Duty Cycle:

   • The maximum duty cycle is 90%, and the minimum duty cycle is 10%. Adjust the duty cycle using the PWM input or internal control logic as needed.

7. Error Amplifier Gain:

   • The error amplifier gain is typically 100 V/渭V. This gain is used to regulate the output voltage in feedback loops.

8. Reference Voltage:

   • The reference voltage is typically 5.0V. This voltage is used as a reference for the error amplifier and other internal functions.

9. Shutdown Current:

   • The shutdown current is very low, typically around 0.5mA at 15V. Use the shutdown pin to turn off the IC when not in use to save power.

10. Thermal Shutdown:

    • The IC has built-in thermal protection that will shut down the device if the temperature exceeds 150掳C. Ensure proper heat dissipation to prevent thermal shutdown.

Pin Configuration:

Pin Number	Pin Name	Description
1	Vcc	Power Supply
2	GND	Ground
3	OUTA	High-Side Output
4	OUTB	Low-Side Output
5	FB	Feedback Input
6	COMP	Compensation Input
7	REXT	External Resistor for Oscillator
8	CEXT	External Capacitor for Oscillator
9	SHUTDOWN	Shutdown Control
10	Vref	Reference Voltage Output
11	NC	No Connect
12	NC	No Connect
13	NC	No Connect
14	NC	No Connect

Application Notes:

• Half-Bridge Configuration:

  • The SG2524BDW is commonly used in half-bridge configurations for switching power supplies and motor control applications. Ensure that the dead time is properly set to prevent shoot-through.

• Feedback Loop:

  • Use the feedback (FB) and compensation (COMP) pins to create a stable feedback loop for voltage regulation. Proper compensation is crucial for stability.

• Thermal Management:

  • Place the IC on a heatsink or a PCB with good thermal conductivity to ensure efficient heat dissipation.

• Capacitor Selection:

  • Choose the external capacitor (CEXT) and resistor (REXT) values carefully to achieve the desired oscillator frequency and stability.

By following these instructions and parameters, you can effectively design and implement circuits using the SG2524BDW PWM controller IC.

(For reference only)