IR2103 Half-Bridge High and Low Side MOSFET Driver IC
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Prices updated: 13 Oct 2026
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About this product
The IR2103 is a half-bridge gate driver IC that drives one high-side and one low-side N-channel MOSFET or IGBT. Its floating high-side channel works with a bootstrap circuit and is rated up to 600 V, making it common in motor drivers, class-D stages and inverter bridges. It includes undervoltage lockout and internal dead time.
Specifications
- High-side offset voltage (max)
- 600 V
- Gate drive supply (VCC)
- 10 V to 20 V
- Output current
- +130 mA / -270 mA
- Turn-on / turn-off delay (typ.)
- 680 ns / 150 ns
- Logic input compatibility
- 3.3 V, 5 V and 15 V
- Dead time
- Internal
Frequently asked questions
Do I need a bootstrap diode and capacitor?
Yes. The high-side channel is normally powered through a bootstrap diode and capacitor between VCC and VB. Follow the application circuit in the datasheet.
How are the logic inputs used?
HIN controls the high-side output and LIN controls the low-side output. The IC accepts 3.3 V, 5 V and 15 V logic. Verify the output polarity against the datasheet truth table for your design.
