LM5100A/B/C, LM5101A/B/C 3-A, 2-A, and 1-A High-Voltage, High-Side and Low-Side Gate Drivers
1 Features
- Drives Both a High-Side and Low-Side N-Channel MOSFETs
- Independent High- and Low-Driver Logic Inputs
- Bootstrap Supply Voltage up to 118 V DC
- Fast Propagation Times (25-ns Typical)
- Drives 1000-pF Load With 8-ns Rise and Fall Times
- Excellent Propagation Delay Matching (3-ns Typical)
- Supply Rail Undervoltage Lockout
- Low Power Consumption
- Pin Compatible With HIP2100/HIP2101
2 Applications
- Current-Fed Push-Pull Converters
- Half and Full Bridge Power Converters
- Synchronous Buck Converters
- Two Switch Forward Power Converters
- Forward with Active Clamp Converters
3 Description
The LM5100A/B/C and LM5101A/B/C high-voltage gate drivers are designed to drive both the high-side and the low-side N-Channel MOSFETs in a synchronous buck or a half-bridge configuration. The floating high-side driver is capable of operating with supply voltages up to 100 V. The A versions provide a full 3-A of gate drive, while the B and C versions provide 2 A and 1 A, respectively. The outputs are independently controlled with CMOS input thresholds (LM5100A/B/C) or TTL input thresholds
(LM5101A/B/C).
An integrated high-voltage diode is provided to charge the high-side gate drive bootstrap capacitor. A robust level shifter operates at high speed while consuming low power and providing clean level transitions from the control logic to the high-side gate driver. Undervoltage lockout is provided on both the low-side and the high-side power rails. These devices are available in the standard SOIC-8 pin, SO PowerPAD-8 pin, and the WSON-10 pin packages. The LM5100C and LM5101C are also available in MSOP-PowerPAD-8 package. The LM5101A is also available in WSON-8 pin package.
Device Information(1)
| PART NUMBER | INPUT THRESHOLD | PEAK OUTPUT CURRENT |
|---|---|---|
| LM5100A | CMOS | 3 A |
| LM5101A | TTL | 3 A |
| LM5100B | CMOS | 2 A |
| LM5101B | TTL | 2 A |
| LM5100C | CMOS | 1 A |
| LM5101C | TTL | 1 A |
- For all available packages, see the orderable addendum at the end of the data sheet.
Simplified Block Diagram
4 Revision History
Changes from P Revision (March 2013) to Q Revision
- Added ESD Ratings table, Thermal Information table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section. Go
Changes from O Revision (March 2013) to P Revision
- Changed layout of National Data Sheet to TI formatGo
5 Device Comparison Table
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| LM5100A, LM5100C | WSON (10) | 4.00 mm × 4.00 mm |
| SO PowerPAD™ (8) | 3.90 mm × 4.89 mm | |
| SOIC (8) | 3.91 mm × 4.90 mm | |
| LM5100B, LM5101B | WSON (10) | 4.00 mm × 4.00 mm |
| SOIC (8) | 3.91 mm × 4.90 mm | |
| LM5101A | WSON (8) | 4.00 mm × 4.00 mm |
| WSON (10) | 4 .00mm × 4.00 mm | |
| SO PowerPAD (8) | 3.90 mm × 4.89 mm | |
| SOIC (8) | 3.91 mm × 4.90 mm | |
| LM5101C | MSOP PowerPAD (8) | 3.00 mm × 3.00 mm |
| WSON (10) | 4.00 mm × 4.00 mm | |
| SOIC (8) | 3.91 mm × 4.90 mm |
