Overview
The LM5101AMX/NOPB, produced by Texas Instruments, is a high-voltage gate driver designed to drive both the high-side and low-side N-Channel MOSFETs in various power conversion configurations. This device is part of the LM5101A series, which features TTL input thresholds and a robust level shifter for high-speed operation with low power consumption. The LM5101AMX/NOPB is particularly suited for applications requiring precise control over MOSFETs in synchronous buck, half-bridge, and other power converter topologies.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Peak Output Current | 3 A | A |
| Input Threshold | TTL | - |
| Supply Rail Undervoltage Lockout | 6.9 V (VDD rising threshold) | V |
| Bootstrap Supply Voltage | Up to 118 V DC | V |
| Propagation Times | 25 ns (Typical) | ns |
| Rise and Fall Times | 8 ns (Typical for 1000-pF load) | ns |
| Propagation Delay Matching | 3 ns (Typical) | ns |
| Junction Temperature | -55 to 150 °C | °C |
| Package Options | SOIC-8, SO PowerPAD-8, WSON-8, WSON-10, MSOP-PowerPAD-8 | - |
Key Features
- Drives both high-side and low-side N-Channel MOSFETs in synchronous buck or half-bridge configurations.
- Independent high- and low-driver logic inputs with TTL thresholds.
- Bootstrap supply voltage up to 118 V DC.
- Fast propagation times (25-ns typical) and excellent propagation delay matching (3-ns typical).
- Drives 1000-pF load with 8-ns rise and fall times.
- Supply rail undervoltage lockout on both low-side and high-side power rails.
- Low power consumption and pin compatibility with HIP2100/HIP2101.
- Integrated high-voltage diode for charging the high-side gate drive bootstrap capacitor.
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
Q & A
- What is the peak output current of the LM5101AMX/NOPB?
The peak output current of the LM5101AMX/NOPB is 3 A.
- What type of input thresholds does the LM5101AMX/NOPB have?
The LM5101AMX/NOPB has TTL input thresholds.
- What is the maximum bootstrap supply voltage for the LM5101AMX/NOPB?
The maximum bootstrap supply voltage is up to 118 V DC.
- What are the typical propagation times for the LM5101AMX/NOPB?
The typical propagation times are 25 ns.
- How does the LM5101AMX/NOPB handle undervoltage conditions?
The device features supply rail undervoltage lockout on both the low-side and high-side power rails.
- What are the package options available for the LM5101AMX/NOPB?
The device is available in SOIC-8, SO PowerPAD-8, WSON-8, WSON-10, and MSOP-PowerPAD-8 packages.
- What is the junction temperature range for the LM5101AMX/NOPB?
The junction temperature range is -55 to 150 °C.
- Does the LM5101AMX/NOPB have any integrated components for bootstrap charging?
Yes, it has an integrated high-voltage diode for charging the high-side gate drive bootstrap capacitor.
- What are some common applications for the LM5101AMX/NOPB?
Common applications include synchronous buck converters, half and full bridge power converters, and two switch forward power converters.
- Is the LM5101AMX/NOPB pin compatible with other devices?
Yes, it is pin compatible with HIP2100/HIP2101 devices.
