IR2112 Description
The IR2112 is a high-voltage IC that acts as a MOSFET driver and IGBT driver. It has independent high and low-side referenced output channels with a threshold voltage of 600 V.
Bootstrap feature makes it compatible with high-side driver applications. Additionally, it has Schmitt-triggered inputs that are compatible with the standard CMOS and LSTTL outputs. The voltage range is 10V to 20V.
Furthermore, it has applications that require the circuitry of both high and low-side drives, for example, half-bridge and full-bridge circuits. It is available in 14 Lead PDIP package.
Summary of Features
- Floating channel designed for bootstrap operation
- Fully operational to +600 V
- Tolerant to negative transient voltage
- dV/dt immune
- Gate drive supply ranges from 10 to 20 V
- Undervoltage lockout for both channels
- 3.3 V logic compatible
- Separate logic supply range from 3.3 V to 20 V
- Logic and power ground +/- 5 V offset
- CMOS Schmitt-triggered inputs with pull-down
- Cycle-by-cycle edge-triggered shutdown logic
- Matched propagation delay for both channels
- Outputs in phase with inputs
Pinout:
| Pin Number | Pin Name | Description |
| 1 | LO | Logic supply |
| 2 | COM | Logic input for high side gate driver output (HO), in phase |
| 3 | VCC | Logic input for shutdown |
| 5 | VS | Logic input for low side gate driver output (LO), in phase |
| 6 | VB | Logic ground |
| 7 | HO | High side floating supply |
| 9 | VDD | High side gate drive output |
| 10 | HIN | High side floating supply return |
| 11 | SD | Low side supply |
| 12 | LIN | Low side gate drive output |
| 13 | VSS | Low side return |
Parametrics
| Parametrics | IR2112 |
|---|---|
| Channels | 2 |
| Configuration | High-side and low-side |
| Input Vcc min max | 10 V 20 V |
| Isolation Type | Functional levelshift |
| Output Current (Sink) | 0.5 A |
| Output Current (Source) | 0.25 A |
| Turn Off Propagation Delay | 105 ns |
| Turn On Propagation Delay | 125 ns |
| VBS UVLO (On) | 8.5 V |
| VBS UVLO (Off) | 8.1 V |
| VCC UVLO (On) | 8.6 V |
| VCC UVLO (Off) | 8.2 V |
| Voltage Class | 600 V |
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