Overview
The ISO5852SDWEVM-017 is a compact, dual-channel isolated gate driver evaluation module (EVM) designed by Texas Instruments. This EVM is specifically tailored to drive and protect Silicon Carbide (SiC) MOSFET and Silicon (Si) IGBT power modules, particularly those housed in 150-mm × 62-mm × 17-mm packages. It is based on the ISO5852SDW driver IC, which provides 5.7-kVrms reinforced isolation with 8.0 mm creepage and clearance. The board includes essential features such as drive, bias voltages, protection, and diagnostic capabilities necessary for half-bridge configurations.
Key Specifications
| Parameter | Test Condition | Min | Nom | Max | Unit |
|---|---|---|---|---|---|
| TRISE | Drive output rise time (CLOAD = 10nF) | 30 ns | - | - | ns |
| TFALL | Drive output fall time (CLOAD = 10nF) | 34 ns | - | - | ns |
| TPROP | Propagation delay (CLOAD = 100nF) | 130 ns | 150 ns | - | ns |
| TSKEW | Pulse skew | 20 ns | - | - | ns |
| TGLITCH | Input glitch filter | 20 ns | 30 ns | 40 ns | ns |
| TUVLO | UVLO recovery delay | 50 µs | - | - | µs |
| TOVOL | OVLO recovery delay | 50 µs | - | - | µs |
| VDESAT | Desaturation threshold | 8.3 V | 9.0 V | 9.5 V | V |
| TDESATBLN | Blanking time | 310 ns | 400 ns | 480 ns | ns |
| TDS90 | Response time to 90% VOUTHL (CLOAD = 10nF) | 553 ns | 760 ns | - | ns |
| TDS10 | Response time to 10% VOUTHL (CLOAD = 10nF) | 2 µs | 3.5 µs | - | µs |
| ICHARGE | Capacitor charge current | 0.42 mA | 0.5 mA | 0.58 mA | mA |
| IDISCHARGE | Capacitor discharge current | 9 mA | 14 mA | - | mA |
| VCLAMP | Miller clamp threshold | 1.6 V | 2.1 V | 2.5 V | V |
| ICLAMP | Miller clamp current | - | - | 4 A | A |
| VISO | Withstand isolation voltage | - | - | 5.0 kVrms | kVrms |
| CI | Barrier capacitance | - | - | 20 pF | pF |
| TA | Operating Ambient Temperature | -40 °C | 25 °C | 125 °C | °C |
Key Features
- Dual-channel isolated gate driver using ISO5852SDW driver IC with 5.7-kVrms reinforced isolation and 8.0 mm creepage and clearance.
- Split rail bias supply using SN6505B transformer drivers to generate +17 V and -5 V rails for turn ON and OFF respectively.
- Input logic block with shoot-through prevention and additional UVLO and OVLO protection.
- Output protection and diagnostic block including short circuit sensing, soft turn-OFF protection, and fault feedback with reset.
- Active Miller Clamp and output short circuit clamp.
- Temperature and input rail monitoring using AMC1301 isolated amplifiers.
- Programmable short-circuit sensing and soft turn-OFF protection by de-saturation circuit.
- Output overlapping prevention mode configurable via shunt resistors.
Applications
- Solar inverters
- Motor drives
- Hybrid Electric Vehicle (HEV) and Electric Vehicle (EV) chargers
- Wind turbines
- Transportation systems
- Uninterruptible Power Supplies (UPS)
Q & A
- What is the ISO5852SDWEVM-017 evaluation module used for?
The ISO5852SDWEVM-017 is used to drive and protect Silicon Carbide (SiC) MOSFET and Silicon (Si) IGBT power modules in various applications such as solar inverters, motor drives, and EV chargers.
- What are the key components of the ISO5852SDWEVM-017?
The key components include the ISO5852SDW driver IC, SN6505B transformer drivers, and AMC1301 isolated amplifiers.
- What type of isolation does the ISO5852SDW driver IC provide?
The ISO5852SDW driver IC provides 5.7-kVrms reinforced isolation with 8.0 mm creepage and clearance.
- How does the board protect against short circuits?
The board includes programmable short-circuit sensing and soft turn-OFF protection by de-saturation circuit, along with output short circuit clamp and fault feedback with reset.
- What is the purpose of the AMC1301 isolated amplifiers?
The AMC1301 amplifiers are used for temperature and input rail monitoring, providing isolated differential output signals.
- Can the output overlapping be configured on the ISO5852SDWEVM-017?
Yes, the output overlapping can be configured by either having shunt resistors R48 and R52 in place or removing them to allow outputs overlapping.
- What are the operating temperature limits of the ISO5852SDWEVM-017?
The operating ambient temperature range is from -40 °C to 125 °C.
- What safety precautions should be taken when testing the ISO5852SDWEVM-017?
Users should follow all electrical safety and ESD protection requirements, and adhere to high voltage safety rules and regulations to minimize the risk of electrical shock and fire hazards.
- What is the significance of the split rail bias supply on the ISO5852SDWEVM-017?
The split rail bias supply generates separate +17 V and -5 V rails for turn ON and OFF, respectively, which is essential for the operation of the power modules.
- What tools are recommended for testing the ISO5852SDWEVM-017?
Recommended tools include an oscilloscope with at least 4 channels, passive voltage probes, digital multi-meters, and other specific test equipment as outlined in the user's guide.
