Overview
The LM5108DRCR, produced by Texas Instruments, is a high-frequency half-bridge gate driver designed to drive two N-channel MOSFETs in high-side and low-side configurations. This device is particularly suited for topologies such as synchronous buck, full bridge, active clamp forward, LLC, and synchronous boost. It features a maximum switch node (HS) voltage rating of 100 V and is available in a compact 3-mm x 3-mm VSON (DRC) package, making it ideal for dense power designs, including power tools and motor drives.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Maximum Switch Node (HS) Voltage | 100 | V |
| Output Current (Sink/Source) | 2.6 A / 1.6 A | A |
| Propagation Delay (Typical) | 20 ns | ns |
| Rise Time (Typical) | 11 ns | ns |
| Fall Time (Typical) | 8 ns | ns |
| Delay Matching (Typical) | 1 ns | ns |
| Under Voltage Lockout (UVLO) Threshold | 5 V | V |
| Operating Temperature Range | -40 to 125 | °C |
| Package Type | VSON (DRC) | |
| Number of Pins | 10 |
Key Features
- Interlock Functionality: Prevents both outputs from being high at the same time, improving system robustness in motor drive and power tools applications.
- Enable/Disable Functionality: Allows for flexible and fast control of the power stage, reducing standby current and responding to system faults in battery-powered tools.
- Independent Inputs: Inputs are independent of supply voltage and can have independent pulse widths, providing maximum control flexibility.
- Integrated Bootstrap Diode: Eliminates the need for an external discrete diode, improving board space utilization.
- Low UVLO Threshold: Allows the driver to operate at lower bias supplies, enabling the power stage to operate at higher switching frequencies without increasing switching losses.
- Compact Package: Available in a 3-mm x 3-mm VSON (DRC) package, enabling dense power designs.
Applications
- Motor Drives: The interlock feature and robust design make it suitable for motor drive applications.
- Power Tools: Ideal for battery-powered tools due to its enable/disable functionality and low standby current.
- Synchronous Buck, Full Bridge, Active Clamp Forward, LLC, and Synchronous Boost Topologies: Designed to drive two N-channel MOSFETs in these configurations.
Q & A
- What is the maximum switch node (HS) voltage rating of the LM5108DRCR?
The maximum switch node (HS) voltage rating is 100 V.
- What are the output current capabilities of the LM5108DRCR?
The device can sink 2.6 A and source 1.6 A.
- What is the typical propagation delay of the LM5108DRCR?
The typical propagation delay is 20 ns.
- Does the LM5108DRCR have an integrated bootstrap diode?
- What is the operating temperature range of the LM5108DRCR?
The operating temperature range is -40°C to 125°C.
- What package type and size is the LM5108DRCR available in?
- What is the purpose of the interlock functionality in the LM5108DRCR?
The interlock functionality prevents both outputs from being high at the same time, improving system robustness.
- How does the enable/disable functionality benefit battery-powered tools?
The enable/disable functionality reduces standby current and allows the device to respond to system faults in battery-powered tools.
- What is the typical UVLO threshold of the LM5108DRCR?
The typical UVLO threshold is 5 V.
- What topologies can the LM5108DRCR be used in?
