Topdiode TNSG27324 to replace TI UCC27324

Table of Contents

TI UCC27324 Information

The UCC27324 is a high-speed, dual-channel, high-current gate driver IC (Integrated Circuit) designed and manufactured by Texas Instruments (TI). It’s commonly used in applications where fast and efficient switching of power semiconductor devices, such as MOSFETs and IGBTs, is required. The driver provides robust gate drive characteristics and protection features to ensure reliable and efficient operation of these power devices.

Key features and specifications of the TI UCC27324 gate driver include

  1. Dual-Channel: The UCC27324 has two independent driver channels, making it suitable for driving two separate power devices.
  2. High-Speed Operation: The driver is designed for high-speed switching applications, allowing for rapid turn-on and turn-off of power devices, which is crucial in high-frequency applications like switching power supplies, motor drives, and inverters.
  3. High Output Current: The UCC27324 is capable of delivering high peak output currents, ensuring fast and efficient charging and discharging of the gate capacitance of power devices.
  4. Wide Input Voltage Range: The driver can operate with a wide range of input supply voltages, making it compatible with various power supply configurations.
  5. Miller-Clamp Protection: It provides Miller-clamp functionality, which helps prevent unwanted voltage overshoot on the gate of the power devices during turn-off, reducing the risk of spurious turn-on.
  6. Under-Voltage Lockout (UVLO): The driver includes UVLO circuitry that prevents operation when the supply voltage falls below a certain threshold, enhancing system reliability and protecting against erratic behavior during low voltage conditions.
  7. Matched Propagation Delays: The propagation delays of the high-side and low-side drivers are well-matched, ensuring minimal dead-time and reducing the likelihood of shoot-through currents during transitions.
  8. Integrated Desaturation Detection: Some versions of the UCC27324 also feature integrated desaturation detection circuitry that can help protect against overcurrent conditions by detecting abnormal voltage levels across the power device.

The UCC27324 and similar gate driver ICs are commonly used in a wide range of applications, including motor drives, power inverters, uninterruptible power supplies (UPS), and other high-power electronics systems where efficient switching of power devices is essential.

Features of UCC27324

  • Bi-CMOS Output Architecture
  • ±4 A Drive Current at the Miller Plateau Region
  • Constant-Current Even at Low Supply Voltages
  • Outputs Paralleled for Higher Drive Current
  • Available in MSOP-PowerPAD™ Package
  • TTL/CMOS Inputs Independent of Supply Voltage
  • Industry-Standard Pin-Out
Topdiode TNSG27324 to replace TI UCC27324

Description of UCC27324

The UCC2732x and UCC3732x series of high-speed dual-channel MOSFET drivers provide 4A peak pull current and 4A peak fill current to provide the most needed efficient MOSFET drive in the Miller flat region. The unique bipolar and MOSFET hybrid output stages are in parallel for efficient pull and fill currents at low supply voltages. A combination of 3 standard logic options is provided – two-way inverting, two-way in-phase, one-way inverting, and one-way in-phase. Input thresholds are based on TTL and CMOS, are independent of supply voltage, and have wide input hysteresis that provides excellent noise protection. The UCC2732x and UCC3732x families are available in standard SOIC-8 (D) or DIP-8 (P) packages as well as a heat-enhanced 8-pin PowerPAD MSOP package (DGN) that significantly reduces thermal resistance to improve long-term reliability.​​​​​​​

Topdiode TNSG27324 to replace TI UCC27324

Dual 5A,High-Speed,Low-Side Gate Driver with Negative Input Voltage Capability,TNSG 27324 Replace UCC27324.


• Two Independent Gate Drive Channels

• 5A Source and 5A Sink Peak Currents

• Wide Supply Voltage Range: 4.5V to 18V

• TTL and CMOS Compatible Logic Threshold

• Logic Levels Independent of Supply Voltage

• Hysteretic Input Logic for High Noise Immunity

• Outputs Held Low When Inputs are Floating

• Fast Propagation Delays: 18ns (TYP)

• Fast Rise Time: 7ns (TYP)

• Fast Fall Time: 7ns (TYP)

• Ringing Suppression

• Negative Voltage Capability on INx Pins:  -10V when (VDD – VINx) ≤ 20V

• Negative Voltage Capability on ENx Pins: -10V when (VDD – VENx) ≤ 20V

• Negative Voltage Capability on OUTx Pin:-2V (Pulse < 200ns)

• Comprehensive Protection Features

  Thermal Shutdown Protection   

  Under-Voltage Lockout    

  Short-Circuit Protection    

• -40℃ to +125℃ Operating Temperature Range

• Available in Green SOIC-8, MSOP-8 (Exposed Pad) and TDFN-3×3-8L Packages

In the past two years, due to out-of-stock and price increases and other factors, many manufacturers through domestic replacement to solve the problem of project shortage, domestic motor driver chip in voltage withstand voltage, current drive ability and anti-static, anti-surge reliability has a good performance, Topdiode TNSG27324 double low side, high current drive can be compatible to replace TI UCC27324 chip.

Share the Post:
Related Posts
The Role of Capacitors

The basic function of capacitors is charging and discharging, but many circuit phenomena extended from this basic charging and discharging function make capacitors have various uses. For example, in electric

Read More
Scroll to Top