The part number "UCC21225ANPLR" corresponds to a Texas Instruments (TI) device. It's a high-performance isolated gate driver, typically used for controlling Power MOSFETs or IGBTs in power systems. Below, I will provide an in-depth explanation of the part, its package, pinout, and detailed FAQ.
1. Package Type
The "UCC21225ANPLR" is housed in the SOIC-16 (Small Outline Integrated Circuit) package, which has 16 pins in total. This package is commonly used for devices that require a compact form while ensuring sufficient pin count for complex circuit connections.
2. Pin Function Details for UCC21225ANPLR
Below is the detailed pinout for the UCC21225ANPLR, with an explanation of each pin:
Pin No. Pin Name Function Description 1 VSS (GND) Ground pin for logic side. It serves as the return path for the control circuit. 2 VDD (VCC) Power supply pin for the logic side. Typically, 3.3V or 5V, depending on the system. 3 IN+ (Input+) Positive logic input signal for the high-side gate driver. 4 IN- (Input-) Negative logic input signal for the high-side gate driver. 5 VSS (GND) Another ground pin for isolation between the high and low side. 6 VOUT1 (Output1) Output for driving the gate of the high-side MOSFET or IGBT. 7 VOUT2 (Output2) Output for driving the gate of the low-side MOSFET or IGBT. 8 SD (Shutdown) Active-low shutdown input. When pulled low, it disables the gate driver outputs. 9 VDD (VCC) Another power supply pin for the low side, typically 3.3V or 5V. 10 NC (No Connect) This pin is not connected internally to any functionality. 11 COM (Common) Common reference pin for the low-side driver. 12 VDD (VCC) Power supply pin for low-side logic circuits. 13 VSS (GND) Another ground pin for the low-side circuit. 14 VDD (VCC) Power supply pin for high-side logic. 15 IN- (Input-) Negative input for low-side driver. 16 IN+ (Input+) Positive input for low-side driver.3. Detailed Explanation of Pin Functions
Pin 1: VSS (GND) This is the ground pin for the logic side of the device. It is the reference voltage for the low-side logic circuitry.
Pin 2: VDD (VCC) This is the power supply pin for the logic side. It powers the control circuits of the device. The voltage supplied should typically be 3.3V or 5V.
Pin 3: IN+ (Input+) This is the positive logic input for the high-side gate driver. It receives the signal that will control the switching of the high-side power MOSFET or IGBT.
Pin 4: IN- (Input-) This is the negative logic input for the high-side gate driver. This pin works together with IN+ to determine the logic state of the gate driver.
Pin 5: VSS (GND) This pin is another ground reference for the device, ensuring proper isolation between the high-side and low-side sections.
Pin 6: VOUT1 (Output1) This pin connects to the gate of the high-side MOSFET or IGBT. It provides the output signal that drives the gate of the high-side device.
Pin 7: VOUT2 (Output2) This pin connects to the gate of the low-side MOSFET or IGBT. It provides the output signal that drives the gate of the low-side device.
Pin 8: SD (Shutdown) This pin is used to disable the gate driver outputs. When this pin is pulled low, the gate driver outputs are turned off, effectively disabling the switching of the MOSFETs/IGBTs.
Pin 9: VDD (VCC) This pin powers the low-side logic. It provides the necessary voltage to run the low-side gate driver section.
Pin 10: NC (No Connect) This pin is not internally connected and is not used in the operation of the device.
Pin 11: COM (Common) This is the common reference pin for the low-side gate driver. It is tied to the ground of the low-side system.
Pin 12: VDD (VCC) Similar to pin 9, this pin supplies the low-side logic circuit with power, typically 3.3V or 5V.
Pin 13: VSS (GND) This is the ground pin for the low-side section of the device.
Pin 14: VDD (VCC) This pin supplies the high-side logic circuit with power, ensuring that the high-side gate driver functions correctly.
Pin 15: IN- (Input-) This is the negative input for the low-side driver. It works with IN+ to set the logic for the low-side gate driver.
Pin 16: IN+ (Input+) This is the positive input for the low-side driver. It works in conjunction with IN- to determine the behavior of the low-side gate driver.
4. 20 FAQs about UCC21225ANPLR
What is the UCC21225ANPLR? The UCC21225ANPLR is a high-performance isolated gate driver from Texas Instruments, used for driving MOSFETs and IGBTs.
How many pins does the UCC21225ANPLR have? It has 16 pins in the SOIC-16 package.
What voltage does the UCC21225ANPLR operate at? It typically operates with 3.3V or 5V on its VDD pins, depending on your system configuration.
What is the function of the SD (Shutdown) pin? The SD pin is used to disable the gate driver outputs. When low, it shuts down the driver.
Can the UCC21225ANPLR drive both high and low-side switches? Yes, it can drive both high-side and low-side MOSFETs/IGBTs independently.
What is the maximum voltage the UCC21225ANPLR can handle on the VDD pins? The VDD pins can handle voltages from 3V to 5.5V.
Is the UCC21225ANPLR suitable for driving IGBTs? Yes, it can drive both MOSFETs and IGBTs effectively.
What is the function of the VOUT1 and VOUT2 pins? These pins are the output driver pins for the high-side and low-side MOSFET/IGBT gates.
Can the UCC21225ANPLR be used in a 3-phase motor control application? Yes, the device is suitable for high-power switching applications, including motor control.
What is the input logic required for the IN+ and IN- pins? The IN+ and IN- pins require a logic signal to determine the gate drive output logic.
Does the UCC21225ANPLR require an external transformer for isolation? No, it provides internal isolation between the high and low sides.
What happens if the SD pin is pulled low? The driver outputs are turned off, which disables the gate drive functionality.
Can the UCC21225ANPLR be used in a high-voltage application? Yes, the device supports high-side driving, and can be used with high-voltage systems (up to 5.5V on VDD).
What package is the UCC21225ANPLR in? It is in an SOIC-16 package.
What is the purpose of the COM pin? The COM pin serves as the ground reference for the low-side driver.
Can the UCC21225ANPLR be used in automotive applications? Yes, it is suitable for automotive power control systems, given its isolation and robustness.
What is the maximum operating temperature for the UCC21225ANPLR? The maximum operating temperature is typically 125°C.
How do you shut down the UCC21225ANPLR? To shut down, pull the SD pin low to disable the gate driver.
Can the UCC21225ANPLR be used in a power supply circuit? Yes, it is ideal for driving the gates of power semiconductors in power supply circuits.
Is the UCC21225ANPLR protected against overcurrent? Yes, it has built-in protection against certain fault conditions, such as overvoltage and undervoltage.
This covers a detailed breakdown of the UCC21225ANPLR's pinout, functions, and FAQs. If you need further details, feel free to ask!