Texas Instruments LM5108
The LM5108 is a high frequency half-bridge gate driver with maximum switch node (HS) voltage rating of 100 V. It allows for two N-channel MOSFETs to be controlled in half-bridge configuration based topologies such as synchronous buck, full bridge, active clamp forward, LLC, and synchronous boost. The device has interlock functionality which, prevents both outputs from being high at the same time, in the case when both of the inputs are high.| Part No. | LM5108 |
|---|---|
| Datasheet | LM5108 Download |
| Manufacturer |  Texas Instruments |
| Description | Robust and Compact 100-V Half-Bridge Gate Driver |
| Buy | Stock & Price |
FEATURES
● Drives two N-channel MOSFETs in high-side lowside configuration● Available in 3-mm x 3-mm package
● Interlock or cross-conduction protection
● Enable/disable functionality
● Absolute maximum negative voltage handling on HS (–7 V)
● 5-V typical under voltage lockout
● 20-ns typical propagation delay
● 11-ns rise, 8-ns typical fall time with 1000-pF load
● 1-ns typical delay matching
● 2.6-A sink, 1.6-A source output currents
● Absolute maximum boot voltage 110 V
● Low current (7-µA) consumption when disabled
● Integrated bootstrap diode 2
APPLICATIONS
● Motor drives and power tools● Switch-mode power supplies
● Auxiliary inverters 7V 75V VDD HO EN NC HI HB LI HS VSS LO To Load Simplified Application Diagram 3
DESCRIPTION
This interlock feature improves system robustness in motor drive and power tools applications. Enable and disable functionality allows for the flexible and fast control of the power stage. Battery powered tools can also use enable feature of the LM5108 to reduce the standby current as well as to respond to system fault.
