Details

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BUY TL494CDR2G https://www.utsource.net/itm/p/12404683.html

Parameter	Symbol	Min	Typ	Max	Unit	Description
Supply Voltage	Vcc	8	-	40	V	Operating supply voltage range
Start-up Current	Ist	-	15	-	mA	Current required to start up the device
Quiescent Current	Iq	-	15	-	mA	Current consumed by the device in quiescent state
Output Voltage (High)	Vo(H)	-	4.5	5.5	V	Output voltage when output is high
Output Voltage (Low)	Vo(L)	-	0.4	0.7	V	Output voltage when output is low
Output Current (High)	Io(H)	-	400	-	mA	Maximum current output when high
Output Current (Low)	Io(L)	-	100	-	mA	Maximum current output when low
Dead Time	Td	-	1.6	-	μs	Minimum time between the turn-off of one output and the turn-on of the other
Oscillator Frequency Range	fosc	400	-	400	kHz	Frequency range of the internal oscillator
Duty Cycle Range	D	0	-	100	%	Adjustable duty cycle range
Error Amplifier Gain	Av	-	80	-	dB	Open-loop gain of the error amplifier
Error Amplifier Input Offset	Vos	-	5	15	mV	Input offset voltage of the error amplifier
Thermal Shutdown Temperature	Tshut	-	160	-	°C	Temperature at which the device enters thermal shutdown

Instructions for Using TL494CDR2G

1. Power Supply:

   • Ensure the supply voltage ( V_ ) is within the specified range (8V to 40V).
   • Connect the power supply to pin 16 (Vcc) and ground to pin 8 (GND).

2. Oscillator Configuration:

   • Connect a resistor ( R_t ) between pin 6 (RT/CT) and pin 5 (CT).
   • Connect a capacitor ( C_t ) between pin 5 (CT) and ground.
   • The oscillator frequency ( f_ ) can be calculated using the formula: [ f_ = frac{1.1}{R_t times C_t} ]

3. Error Amplifier:

   • Connect the inverting input of the error amplifier (pin 2) to the feedback signal.
   • Connect the non-inverting input of the error amplifier (pin 1) to the reference voltage.
   • The reference voltage can be set using the internal 5V reference (pin 14).

4. Output Control:

   • The outputs (pins 11 and 12) can be configured as push-pull or open-collector based on the application.
   • For push-pull configuration, connect the load directly to the outputs.
   • For open-collector configuration, use external pull-up resistors.

5. Dead Time Control:

   • Adjust the dead time by connecting a capacitor between pins 4 and 5.
   • The dead time can be fine-tuned to prevent shoot-through in power stages.

6. Thermal Management:

   • Ensure proper heat dissipation to prevent the device from exceeding the thermal shutdown temperature (160°C).

7. Testing and Troubleshooting:

   • Verify the supply voltage and connections before powering the device.
   • Use an oscilloscope to monitor the oscillator frequency and output waveforms.
   • Check the error amplifier inputs and outputs for correct operation.

By following these instructions, you can effectively configure and use the TL494CDR2G in your power supply or control circuit applications.

(For reference only)