The part number "UCC27712DR" refers to a product manufactured by Texas Instruments. It is a high-speed dual MOSFET driver that is commonly used in various power electronics applications.
Packaging Type:
The part "UCC27712DR" comes in a SOIC-8 (Small Outline Integrated Circuit) package. This is a surface-mount package with 8 pins.Pin Functions and Specifications:
Here is a detailed description of the pins for the UCC27712DR:
Pin Number Pin Name Pin Function Description 1 VSS Ground pin for the IC. Connect to the system ground. 2 HO High-side output pin. This drives the gate of the high-side MOSFET. 3 VDD Supply voltage pin for the IC. Typically connected to 10V to 20V supply voltage. 4 COM Low-side return pin. It is the return path for the low-side MOSFET driver. 5 LO Low-side output pin. This drives the gate of the low-side MOSFET. 6 VSS Ground pin. Connected to the system ground. 7 NC No Connection. This pin is not internally connected and can be left floating. 8 VS Supply for the high-side driver. It provides the floating high-side voltage for the MOSFET driver.Pin Function Descriptions in Detail:
VSS (Pin 1, Pin 6) These pins serve as the ground connections for the IC. Ensure they are both connected to the same ground potential of the system. HO (Pin 2) The HO pin is the output for the high-side MOSFET gate. It delivers a high voltage level relative to the source of the high-side MOSFET. VDD (Pin 3) This is the power supply input for the IC. Typically, a voltage of 10V to 20V is recommended for proper operation. Make sure to connect VDD to the appropriate power source. COM (Pin 4) The COM pin is the low-side driver return. It serves as the return path for the low-side MOSFET driver. It is connected to the system ground. LO (Pin 5) The LO pin is the output for the low-side MOSFET gate. It drives the low-side MOSFET relative to the ground potential. NC (Pin 7) This pin has no internal connection and can be left unconnected or used for mechanical purposes if necessary. It does not affect the performance of the device. VS (Pin 8) The VS pin is the high-side floating supply voltage. It connects to the source of the high-side MOSFET, providing the necessary voltage for the high-side driver. The voltage difference between VS and VSS defines the high-side driver output.Frequently Asked Questions (FAQ) About the UCC27712DR:
Q1: What is the recommended supply voltage for UCC27712DR? A1: The recommended supply voltage for the UCC27712DR is 10V to 20V on the VDD pin.
Q2: Can I use the UCC27712DR with a 12V power supply? A2: Yes, a 12V power supply is within the recommended operating range for the UCC27712DR.
Q3: How should the COM pin be connected? A3: The COM pin should be connected to the ground of the system, as it is the return for the low-side driver.
Q4: What is the function of the HO pin? A4: The HO pin is the high-side output. It drives the gate of the high-side MOSFET in the power circuit.
Q5: How is the UCC27712DR used in a MOSFET driver circuit? A5: The UCC27712DR is used to drive the gates of both low-side and high-side MOSFETs in a half-bridge configuration, enabling efficient switching.
Q6: Is there a maximum voltage rating for the VS pin? A6: Yes, the VS pin is designed to operate with voltages up to VDD minus 10V.
Q7: What is the typical gate drive current of the UCC27712DR? A7: The typical gate drive current for the UCC27712DR is 1A for the high-side and low-side drivers.
Q8: How do I connect the VDD and VSS pins? A8: Connect the VDD pin to your positive supply voltage, and connect both VSS pins to your system's ground.
Q9: Does the UCC27712DR support low-voltage logic inputs? A9: Yes, the UCC27712DR accepts logic level inputs for both the low-side and high-side drivers.
Q10: Can I use the UCC27712DR in high-frequency applications? A10: Yes, the UCC27712DR is designed for high-speed switching applications and can be used in high-frequency power circuits.
Q11: What is the role of the NC pin? A11: The NC pin is a no-connect pin. It can be left floating and does not influence the operation of the IC.
Q12: What is the operating temperature range for the UCC27712DR? A12: The UCC27712DR operates in the temperature range of -40°C to +125°C.
Q13: Can the UCC27712DR drive both N-channel and P-channel MOSFETs? A13: The UCC27712DR is designed specifically for N-channel MOSFETs and is not intended to drive P-channel MOSFETs.
Q14: How do I handle the floating voltage for the high-side driver? A14: The high-side driver is powered by the VS pin, which is referenced to the source of the high-side MOSFET. Ensure the proper bootstrap circuit is used to generate the floating voltage.
Q15: What is the maximum gate-source voltage for the UCC27712DR? A15: The maximum gate-source voltage for the UCC27712DR is ±20V.
Q16: Does the UCC27712DR provide short-circuit protection? A16: No, the UCC27712DR does not have integrated short-circuit protection. External circuitry should be used to protect against short circuits.
Q17: Can I use the UCC27712DR for both single-phase and three-phase motor control? A17: Yes, the UCC27712DR can be used in both single-phase and three-phase motor control applications, particularly for driving the MOSFETs in the inverter stage.
Q18: Can the UCC27712DR drive power MOSFETs in a full-bridge configuration? A18: Yes, the UCC27712DR can drive the MOSFETs in a full-bridge configuration, providing both high-side and low-side drive capability.
Q19: What is the propagation delay for the UCC27712DR? A19: The propagation delay for the UCC27712DR is typically 45ns for both high-side and low-side drivers.
Q20: What is the typical rise time and fall time of the UCC27712DR? A20: The typical rise time and fall time for the UCC27712DR are both 15ns.
This summary provides a detailed overview of the UCC27712DR's pin functions, its application, and frequently asked questions.