Overview
The ISO5452-Q1, produced by Texas Instruments, is a robust, automotive-grade isolated gate driver designed to provide efficient and reliable control of IGBTs and MOSFETs. This device is engineered with TI's cutting-edge isolation technology, making it optimized for use in high-voltage and high-temperature environments typical in automotive applications such as electric vehicles, hybrid electric vehicles, and powertrain systems. The ISO5452-Q1 comes in a compact 16-pin SOIC (DW) package, offering a space-saving solution without compromising performance.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOIC (DW) | - |
| Pins | 16 | - |
| Operating Temperature Range | -40 to 125 | °C |
| Input Supply Voltage | 2.25 to 5.5 | V |
| Output Driver Supply Voltage | 15 to 30 | V |
| Peak Output Current | 2.5-A (Source), 5-A (Sink) | A |
| Propagation Delay | 76 ns (Typ), 110 ns (Max) | ns |
| Common-Mode Transient Immunity (CMTI) | 50-kV/μs (Min), 100-kV/μs (Typ) | kV/μs |
| Isolation Surge Withstand Voltage | 10000-V PK | V |
| Voltage Isolation | 5700-V RMS | V RMS |
| Safety-Related Certifications | UL 1577, CSA, TUV, VDE, CQC | - |
Key Features
- Qualified for Automotive Applications with AEC-Q100 qualification.
- Device Temperature Grade 1: –40°C to +125°C ambient operating temperature range.
- Split outputs providing 2.5-A peak source and 5-A peak sink currents.
- Short propagation delay: 76 ns (Typ), 110 ns (Max).
- 2-A active Miller clamp and output short-circuit clamp.
- Soft turn-off (STO) during short circuit and fault alarm upon desaturation detection.
- Input and output undervoltage lockout (UVLO) with ready (RDY) pin indication.
- Active output pulldown and default low outputs with low supply or floating inputs.
- CMOS compatible inputs and rejects input pulses and noise transients shorter than 20 ns.
Applications
The ISO5452-Q1 is designed for use in various high-voltage and high-temperature automotive applications, including:
- Electric vehicles (EVs).
- Hybrid electric vehicles (HEVs).
- Powertrain systems.
- Other automotive power electronics requiring reliable and efficient gate driver control.
Q & A
- What is the operating temperature range of the ISO5452-Q1?
The ISO5452-Q1 operates over a temperature range from –40°C to +125°C.
- What are the input and output supply voltage ranges for the ISO5452-Q1?
The input supply voltage range is 2.25-V to 5.5-V, and the output driver supply voltage range is 15-V to 30-V.
- What are the peak output currents provided by the ISO5452-Q1?
The device provides 2.5-A peak source and 5-A peak sink currents.
- What is the common-mode transient immunity (CMTI) of the ISO5452-Q1?
The CMTI is 50-kV/μs (Min) and 100-kV/μs (Typ) at V_CM = 1500 V.
- What safety-related certifications does the ISO5452-Q1 have?
The device has certifications from UL 1577, CSA, TUV, VDE, and CQC.
- How does the ISO5452-Q1 handle desaturation detection?
Upon desaturation detection, the device initiates a soft-turn-off procedure, disables OUTH, and pulls OUTL to low. A fault signal is sent across the isolation barrier, and the FLT output is pulled low.
- What is the purpose of the active Miller clamp in the ISO5452-Q1?
The active Miller clamp allows Miller current to sink across a low impedance path, preventing the IGBT from being dynamically turned on during high voltage transient conditions.
- How does the ISO5452-Q1 ensure readiness for operation?
The readiness is controlled by two undervoltage-lockout circuits monitoring the input and output side supplies. The RDY output indicates when the device is ready to operate.
- What is the significance of the fault alarm and reset mechanism in the ISO5452-Q1?
The fault alarm signals desaturation detection on the FLT output and can be reset through a low-active pulse at the RST input after the RDY pin goes high.
- What type of package does the ISO5452-Q1 come in?
The device is available in a 16-pin SOIC (DW) package.
