Details

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BUY IR2121 https://www.utsource.net/itm/p/1582624.html
Buffer/Inverter Based MOSFET Driver, 3.3A, CMOS, PDIP8, PLASTIC, DIP-8

Below is the parameter table and instructions for the IR2121 High Voltage, High Speed Power MOSFET Driver from Infineon Technologies.

IR2121 Parameter Table

Parameter	Symbol	Min	Typ	Max	Unit	Conditions
Supply Voltage (Vcc)	Vcc	10	-	20	V	-
Bootstrap Supply Voltage (Vb)	Vb	5.5	-	20	V	-
Input High Level Voltage	VIH	2.0	-	15	V	-
Input Low Level Voltage	VIL	0.8	-	2.0	V	-
Output High Level Voltage	VOH	13.5	14.5	15.5	V	Vcc = 15V, IOH = -1mA
Output Low Level Voltage	VOL	0.5	0.7	1.0	V	Vcc = 15V, IOL = 10mA
Output Sink Current	IOL	100	300	500	mA	Vcc = 15V, VOL = 1.0V
Output Source Current	IOH	-500	-300	-100	mA	Vcc = 15V, VOH = 14.5V
Propagation Delay Time	tpd	35	55	90	ns	Vcc = 15V, Vb = 15V, RL = 50Ω
Rise Time	tr	30	50	80	ns	Vcc = 15V, Vb = 15V, RL = 50Ω
Fall Time	tf	30	50	80	ns	Vcc = 15V, Vb = 15V, RL = 50Ω
Operating Temperature Range	Tj	-40	-	150	°C	-

IR2121 Instructions

1. Supply Voltage (Vcc):

   • The supply voltage should be between 10V and 20V.
   • Ensure that the supply voltage is stable to avoid any malfunction.

2. Bootstrap Supply Voltage (Vb):

   • The bootstrap supply voltage should be between 5.5V and 20V.
   • This voltage is used to drive the high-side MOSFET gate.

3. Input Logic Levels:

   • The input high level voltage (VIH) should be between 2.0V and 15V.
   • The input low level voltage (VIL) should be between 0.8V and 2.0V.
   • Use appropriate logic levels to ensure reliable operation.

4. Output Voltage Levels:

   • The output high level voltage (VOH) should be between 13.5V and 15.5V when Vcc = 15V and IOH = -1mA.
   • The output low level voltage (VOL) should be between 0.5V and 1.0V when Vcc = 15V and IOL = 10mA.

5. Output Current:

   • The output sink current (IOL) can range from 100mA to 500mA.
   • The output source current (IOH) can range from -500mA to -100mA.

6. Timing Parameters:

   • The propagation delay time (tpd) is between 35ns and 90ns.
   • The rise time (tr) and fall time (tf) are both between 30ns and 80ns.

7. Temperature Range:

   • The operating temperature range for the device is from -40°C to 150°C.
   • Ensure that the device is operated within this temperature range to avoid damage.

8. Circuit Design Considerations:

   • Use appropriate decoupling capacitors close to the Vcc and Vb pins to ensure stable operation.
   • Ensure that the bootstrap capacitor is large enough to maintain the high-side gate drive during the switching cycle.
   • Use external resistors to limit the gate current if necessary to protect the MOSFETs.

9. Handling Precautions:

   • The IR2121 is sensitive to electrostatic discharge (ESD). Handle the device with care and use proper ESD protection.
   • Avoid exposing the device to excessive heat or mechanical stress.

By following these parameters and instructions, you can ensure reliable and efficient operation of the IR2121 high voltage, high-speed power MOSFET driver.

(For reference only)