The IRS2092STRPBF is an integrated circuit (IC) from Infineon Technologies, designed as a high-voltage, high-speed Power MOSFET driver, commonly used in audio amplifiers, inverters, and other power electronics systems. Below is a detailed explanation of the pin function specifications and the circuit principle instructions for the IRS2092STRPBF, including its pinout description, circuit working principles, and frequently asked questions (FAQs) in a question-and-answer format.
Package Type:
The IRS2092STRPBF is available in an 18-pin SOIC package (Small Outline Integrated Circuit). The "STRPBF" part of the name indicates that the device is lead-free and compliant with RoHS standards.
Pin Function Description:
The 18 pins of the IRS2092STRPBF are used for various purposes, including power supply, output drive, feedback, and signal processing. Below is a detailed description of the function of each pin in the device.
Pinout Table (Pin Function Description): Pin Number Pin Name Pin Function Description 1 VDD Power supply input for internal circuits, typically +15V 2 VSS Ground pin for the internal circuitry 3 IN+ Non-inverting input for PWM signal (input to the gate driver) 4 IN- Inverting input for PWM signal (input to the gate driver) 5 NC No connection (NC) 6 LO Low-side output driver (Gate driver for low-side MOSFET) 7 HS High-side output driver (Gate driver for high-side MOSFET) 8 SD Shutdown pin (used to disable the IC) 9 COM Common connection for the high-side and low-side drivers 10 FLT Fault pin (indicates fault condition, typically active low) 11 VSS2 Ground reference for high-side driver (usually connected to the source of the high-side MOSFET) 12 HO High-side driver output (connected to the gate of the high-side MOSFET) 13 LO2 Low-side driver output (connected to the gate of the low-side MOSFET) 14 VCC Power supply input for the low-side driver (typically +12V or +15V) 15 VSS1 Ground reference for the low-side driver (connected to the source of the low-side MOSFET) 16 ISEN+ Positive terminal of the current sense input (used to sense the current in the MOSFET) 17 ISEN- Negative terminal of the current sense input 18 VDD2 Power supply for internal logic (typically +15V) Explanation of Key Functions: VDD & VSS: These pins supply power to the internal logic and control circuits of the IRS2092. VDD is typically connected to +15V, and VSS is connected to ground. IN+ & IN-: These are the differential inputs where the PWM signal is applied. The non-inverting input is IN+, and the inverting input is IN-. A high signal at IN+ compared to IN- turns on the MOSFETs . LO & HS: These are the output pins used to drive the MOSFETs. LO drives the low-side MOSFET, and HS drives the high-side MOSFET. SD: This pin is used to shut down the IC and stop the output drivers from functioning. FLT: This is the fault output pin. It is typically used to signal a fault condition, such as overcurrent, thermal shutdown, or other errors in the system. COM: This is the common reference for the high-side and low-side drivers. ISEN+ & ISEN-: These pins are used for current sensing. They allow feedback on the current through the MOSFETs for overcurrent protection or for monitoring purposes.Working Principle of IRS2092:
The IRS2092 is a MOSFET driver that operates with complementary high-side and low-side gate drivers for driving power MOSFETs in high-efficiency power converters, amplifiers, and motor control systems. It utilizes pulse-width modulation (PWM) signals at the IN+ and IN- pins to control the switching of MOSFETs. The IC features current sensing via ISEN+ and ISEN-, and fault detection is managed via the FLT pin.
The IC can be shut down by pulling the SD pin low. The high-side driver (HS) is powered by a bootstrap capacitor , while the low-side driver (LO) uses a direct connection to VSS.FAQs (Frequently Asked Questions):
1. What is the purpose of the IRS2092 in audio amplifiers? The IRS2092 is used as a high-voltage MOSFET driver for audio amplification systems, providing efficient switching control for power transistor s.
2. What supply voltages are required for the IRS2092? The IRS2092 typically operates with VDD at +15V and VCC for the low-side driver at +12V to +15V.
3. How do I control the MOSFETs with the IRS2092? The IRS2092 is controlled by applying a differential PWM signal to the IN+ and IN- pins, which in turn drives the MOSFETs.
4. What is the function of the FLT pin? The FLT pin outputs a fault signal, typically low, when a fault condition such as overcurrent or thermal shutdown occurs.
5. Can the IRS2092 be used for both high-side and low-side switching? Yes, the IRS2092 can drive both high-side and low-side MOSFETs simultaneously, making it ideal for full-bridge configurations.
6. What does the SD pin do? The SD pin shuts down the IRS2092, disabling both high-side and low-side MOSFET drivers.
7. How does the IRS2092 handle current sensing? The IRS2092 has dedicated pins (ISEN+ and ISEN-) for current sensing. These are used to monitor current through the MOSFETs.
8. What is the recommended way to connect the COM pin? The COM pin should be connected to the source of the low-side MOSFET or a common reference point between the high-side and low-side MOSFETs.
9. How is the bootstrap capacitor used in the IRS2092? The IRS2092 uses a bootstrap capacitor to provide the required voltage for the high-side driver (HS) relative to the source of the high-side MOSFET.
10. What is the fault condition that triggers the FLT pin? Fault conditions include overcurrent, thermal shutdown, and other protection features that the IC monitors to ensure safe operation.
11. What is the difference between the IN+ and IN- pins? IN+ is the non-inverting input, and IN- is the inverting input for the PWM signal. The differential voltage between these inputs controls the switching of the MOSFETs.
12. How does the IRS2092 protect against overcurrent? The IRS2092 uses current sensing pins (ISEN+ and ISEN-) to monitor the current flowing through the MOSFETs and activate the fault protection if necessary.
13. Can the IRS2092 be used for motor control? Yes, the IRS2092 can be used for motor control applications due to its high-speed switching and MOSFET driving capabilities.
14. What is the purpose of the VSS1 and VSS2 pins? VSS1 is the ground for the low-side driver, and VSS2 is the ground for the high-side driver, ensuring correct operation of both sides of the MOSFET bridge.
15. Is the IRS2092 capable of driving both N-channel and P-channel MOSFETs? The IRS2092 is primarily designed for driving N-channel MOSFETs, which are commonly used in high-efficiency power designs.
16. How do I disable the IRS2092? The IRS2092 can be disabled by pulling the SD pin low, which shuts down the entire driver circuit.
17. What is the maximum operating frequency of the IRS2092? The IRS2092 can typically operate up to 500 kHz or higher, depending on the application and configuration.
18. Can the IRS2092 be used with a microcontroller? Yes, the IRS2092 can interface with a microcontroller that provides the PWM signals for controlling the MOSFETs.
19. How does the IRS2092 handle thermal shutdown? The IRS2092 has internal thermal protection that disables the outputs if the internal temperature exceeds a safe threshold.
20. What is the role of the VDD2 pin? The VDD2 pin powers the internal logic of the IRS2092, ensuring proper operation of the control circuitry.
This explanation includes all 18 pins with their detailed functions and answers to common questions regarding the IRS2092STRPBF. The detailed explanations should provide a solid foundation for understanding the device's operation and its various applications.
