TC4421A/TC4422A

9A High-Speed MOSFET Drivers

Features

• High Peak Output Current: 10A (typ.)

• Low Shoot-Through/Cross-Conduction Current in Output Stage

• Wide Input Supply Voltage Operating Range:

- 4.5V to 18V

• High Continuous Output Current: 2A (max.)

• Matched Fast Rise and Fall Times:

- 15 ns with 4,700 pF Load

- 135 ns with 47,000 pF Load

• Matched Short Propagation Delays: 42 ns (typ.)

• Low Supply Current:

- With Logic ‘1’ Input – 130 µA (typ.)

- With Logic ‘0’ Input – 33 µA (typ.)

• Low Output Impedance: 1.2Ω (typ.)

• Latch-Up Protected: Will Withstand 1.5A Output Reverse Current

• Input Will Withstand Negative Inputs Up To 5V

• Pin-Compatible with the TC4420/TC4429 and TC4421/TC4422 MOSFET Drivers

• Space-Saving, Thermally-Enhanced, 8-Pin DFN Package

Applications

• Line Drivers for Extra Heavily-Loaded Lines

• Pulse Generators

• Driving the Largest MOSFETs and IGBTs

• Local Power ON/OFF Switch

• Motor and Solenoid Driver

• LF Initiator

General Description

The TC4421A/TC4422A are improved versions of the earlier TC4421/TC4422 family of single-output MOSFET drivers. These devices are high-current buffer/drivers capable of driving large MOSFETs and Insulated Gate Bipolar Transistors (IGBTs). The TC4421A/TC4422A have matched output rise and fall times, as well as matched leading and falling-edge propagation delay times. The TC4421A/TC4422A devices also have very low cross-conduction current, reducing the overall power dissipation of the device.

These devices are essentially immune to any form of upset, except direct overvoltage or over-dissipation. They cannot be latched under any conditions within their power and voltage ratings. These parts are not subject to damage or improper operation when up to 5V of ground bounce is present on their ground terminals. They can accept, without damage or logic upset, more than 1A inductive current of either polarity being forced back into their outputs. In addition, all terminals are fully protected against up to 4 kV of electrostatic discharge.

The TC4421A/TC4422A inputs may be driven directly from either TTL or CMOS (3V to 18V). In addition, 300 mV of hysteresis is built into the input, providing noise immunity and allowing the device to be driven from slowly rising or falling waveforms.

With both surface-mount and pin-through-hole packages, in addition to a wide operating temperature range, the TC4421A/TC4422A family of 9A MOSFET drivers fit into most any application where high gate/line capacitance drive is required.

Absolute Maximum Ratings †

Supply Voltage .....................................................+20V

Input Voltage .................... (VDD + 0.3V) to (GND – 5V)

Input Current (VIN > VDD)...................................50 mA

† Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions above those indicated in the operation sections of the specifications is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability.

Package Types⁽¹⁾

Functional Block Diagram

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