IR2103S

Current - Peak Output (Source, Sink):	210mA, 360mA
Base Part Number:	IR2103S
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 150°C (TJ)
Rise / Fall Time (Typ):	100ns, 50ns
High Side Voltage - Max (Bootstrap):	600V
Input Type:	Inverting, Non-Inverting
Series:	--
Logic Voltage - VIL, VIH:	0.8V, 3V
Voltage - Supply:	10 V ~ 20 V
Gate Type:	IGBT, N-Channel MOSFET
Number of Drivers:	2
Channel Type:	Independent
Driven Configuration:	Half-Bridge
Part Status:	Obsolete
Packaging:	Tube

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Introduction

IR2103S is a type of Pulse-Width Modulator IC (PWM IC) that is primarily used to drive high-current MOSFETs and IGBTs as gate drivers in AC/DC and switching power solutions. The IR2103S is an integrated MOSFET or IGBT gate driver circuit with fault protection, a high- and low-side gate driver, a charge pump, logic inputs, complementary low-side control signals and other features. It has a single gate driver solution that enables a faster slew rate or lower voltage drop which in turn facilitates a smaller board size, higher efficiency and improved thermal performance.

Application Field of IR2103S

The IR2103S PWM IC can be used in switching power supply solutions, such as AC/DC, DC/DC and AC/DC converters. The IC is specifically designed to drive MOSFETs and IGBTs so it is ideal for implementations of high-current switches for applications such as motor control, solenoid control and power factor correction. It can also be used in industrial motor control, home appliances, automotive charging systems, lighting and power supplies.

Working Principle of IR2103S

The IR2103S has a charge pump which supplies the high/low side gate drivers of the IC as well as the complementary low-side control signals. The logic inputs and complementary low-side control signals control the logic inputs of the PWM IC. The input port of the PWM IC is connected to the switching MOSFET/IGBT which allows the IC to sense the voltage of the various nodes in a power supply circuit, such as the output voltage or input voltage. The sense and feedback signals, along with the logic inputs, provide the necessary information to modulate the MOSFET and IGBT gates, thereby controlling the switching of the devices. The PWM IC also features fault protection such as short circuit protection and over-temperature shutdown.

Conclusion

The IR2103S is an integrated gate driver circuit featuring a single gate driver solution that enables a faster slew rate or lower voltage drop. It can be used in AC/DC, DC/DC and AC/DC converters and power supply solutions. It is specifically designed to drive MOSFETs and IGBTs for applications such as motor control, solenoid control and power factor correction. The PWM IC has a charge pump which supplies the high and low side gate drivers of the IC, as well as the complementary low-side control signals. Fault protection functions like short circuit protection and over-temperature shutdown are also included.

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