Overview
The ISO5852SDWR, produced by Texas Instruments, is a high-performance, reinforced isolated gate driver designed for driving IGBTs and MOSFETs. This device features split outputs, OUTH and OUTL, capable of delivering 2.5-A source and 5-A sink current. It operates with a single 2.25-V to 5.5-V input supply and supports an output supply range from 15 V to 30 V. The ISO5852SDWR is housed in a 16-pin SOIC package and is specified to operate over a temperature range of –40°C to +125°C ambient. It includes advanced protection features such as desaturation fault detection, soft-turnoff, and undervoltage-lockout circuits, making it suitable for various high-reliability applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC1 Supply Voltage | 2.25 | 5.5 | V | |
| VCC2 Positive Supply Voltage | 15 | 30 | V | |
| VEE2 Negative Supply Voltage | -15 | 0 | V | |
| Output Current (Source) | 2.5 | A | ||
| Output Current (Sink) | 5 | A | ||
| Ambient Temperature Range | -40 | 125 | °C | |
| Isolation Voltage (RMS) | 5700 | V | ||
| Transient Isolation Voltage (PK) | 8000 | V | ||
| Propagation Time | 76 | ns |
Key Features
- Split Outputs: OUTH and OUTL providing 2.5-A source and 5-A sink current.
- Desaturation Fault Detection: Recognizes overcurrent conditions and initiates a soft-turnoff procedure.
- Undervoltage-Lockout Circuits: Monitors both input and output supplies to ensure proper operation.
- Active Miller Clamp: Prevents dynamic turn-on during high-voltage transient conditions in unipolar supply applications.
- Reinforced Isolation: Certified to various safety standards including VDE, UL, CSA, and IEC.
- Wide Temperature Range: Operates from –40°C to +125°C ambient temperature.
- Short Propagation Time: 76 ns for accurate control of the output stage.
Applications
- Industrial Motor Control Drives: High-reliability gate drivers for industrial motor control systems.
- Industrial Power Supplies: Isolated gate drivers for power supply units in industrial settings.
- Solar Inverters: Used in solar inverter systems to drive IGBTs and MOSFETs efficiently.
- HEV and EV Power Modules: Suitable for hybrid and electric vehicle power modules due to its high isolation and reliability.
- Induction Heating: Applied in induction heating systems requiring isolated gate drivers.
Q & A
- What is the maximum output current of the ISO5852SDWR?
The ISO5852SDWR can deliver up to 5-A sink current and 2.5-A source current.
- What is the operating temperature range of the ISO5852SDWR?
The device operates over a temperature range from –40°C to +125°C ambient.
- What safety certifications does the ISO5852SDWR hold?
It is certified according to VDE, UL, CSA, IEC 60950-1, and IEC 60601-1 standards.
- How does the desaturation fault detection work in the ISO5852SDWR?
Upon detecting an overcurrent condition, the device initiates a soft-turnoff procedure and blocks the output of the isolator.
- What is the propagation time of the ISO5852SDWR?
The propagation time is 76 ns, providing accurate control of the output stage.
- What is the isolation voltage rating of the ISO5852SDWR?
The device has a 5700 VRMS isolation voltage rating and can withstand transient isolation voltages up to 8000 VPK.
- What package type is the ISO5852SDWR available in?
The device is available in a 16-pin SOIC package.
- How does the undervoltage-lockout circuit work in the ISO5852SDWR?
The circuit monitors both input and output supplies, and if either side has insufficient supply, the RDY output goes low.
- What is the purpose of the active Miller clamp in the ISO5852SDWR?
The active Miller clamp prevents the IGBT from dynamic turn-on during high-voltage transient conditions in unipolar supply applications.
- In which applications is the ISO5852SDWR commonly used?
It is commonly used in industrial motor control drives, industrial power supplies, solar inverters, HEV and EV power modules, and induction heating systems.
