Overview
The TD352IDT, produced by STMicroelectronics, is an advanced gate driver designed for IGBTs (Insulated Gate Bipolar Transistors) and power MOSFETs. This device integrates various control and protection functions, enabling the design of high-reliability systems. It features an innovative active Miller clamp, desaturation detection, adjustable turn-on delay, and undervoltage lockout (UVLO) protection. The TD352IDT is particularly useful in applications requiring robust and reliable gate driving, such as 1200 V 3-phase inverters and motor control systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Maximum supply voltage (VH - VL) | 28 | V |
| Output sink/source current | 1.7 A / 1.3 A (typ) | A |
| Input turn-on threshold voltage | 0.8 - 1.0 | V |
| Input turn-off threshold voltage | 4.0 - 4.2 | V |
| Voltage reference | 4.85 - 5.15 | V |
| Operating temperature range | -40 to 125 | °C |
| Maximum junction temperature | 150 | °C |
| ESD protection | 2 kV | |
| Package | SO-8 |
Key Features
- Active Miller Clamp: Eliminates the need for negative gate drive in most applications, reducing voltage spikes on the IGBT gate.
- Desaturation Detection: Protects the IGBT from overcurrent by driving the OUT pin low when the DESAT voltage exceeds a threshold.
- Adjustable Turn-on Delay: Programmable through external resistor and capacitor for accurate timing.
- Undervoltage Lockout (UVLO) Protection: Protects the application by driving the OUT pin low during low VH supply voltage conditions.
- High Current Capability: Sinks/source up to 1.7 A/1.3 A (typical) at 25 °C.
- ESD Protection: 2 kV ESD protection for robustness against electrostatic discharge.
Applications
- 1200 V 3-phase Inverters: Suitable for high-voltage inverter applications.
- Motor Control Systems: Ideal for motor control systems requiring reliable and efficient gate driving.
- UPS Systems: Used in uninterruptible power supply systems for robust and reliable operation.
Q & A
- What is the primary function of the TD352IDT?
The TD352IDT is an advanced gate driver for IGBTs and power MOSFETs, providing control and protection functions for high-reliability systems.
- What is the active Miller clamp feature?
The active Miller clamp feature eliminates the need for negative gate drive by controlling the Miller current and reducing voltage spikes on the IGBT gate.
- How is the turn-on delay adjusted in the TD352IDT?
The turn-on delay is programmable through an external resistor (Rd) and capacitor (Cd) for accurate timing.
- What is desaturation protection in the TD352IDT?
Desaturation protection drives the OUT pin low when the DESAT voltage exceeds a threshold, protecting the IGBT from overcurrent conditions.
- What is the purpose of undervoltage lockout (UVLO) protection?
UVLO protection drives the OUT pin low during low VH supply voltage conditions, protecting the application from undervoltage situations.
- What is the maximum supply voltage for the TD352IDT?
The maximum supply voltage (VH - VL) is 28 V.
- What is the operating temperature range of the TD352IDT?
The operating temperature range is -40 to 125 °C.
- What type of package is the TD352IDT available in?
The TD352IDT is available in an SO-8 package.
- What is the ESD protection level of the TD352IDT?
The TD352IDT has 2 kV ESD protection.
- In what applications is the TD352IDT commonly used?
The TD352IDT is commonly used in 1200 V 3-phase inverters, motor control systems, and UPS systems.
