Overview
The LM5106SDX/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 synchronous buck or half-bridge configurations. This device is capable of handling rail voltages up to 100V and features a single TTL-compatible input, enabling easy integration with various control systems. The LM5106 includes programmable dead-time, fast turn-off propagation delays, and under-voltage lockout (UVLO) to ensure reliable operation. It is available in 10-pin VSSOP and thermally enhanced WSON packages, making it suitable for a range of power management applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Peak Output Sink Current | 1.8 A | A |
| Peak Output Source Current | 1.2 A | A |
| Bootstrap Supply Voltage Range | Up to 118 V DC | V |
| Turn-Off Propagation Delays | 32 ns (Typical) | ns |
| Output Rise Time (CL = 1000 pF) | 15 ns | ns |
| Output Fall Time (CL = 1000 pF) | 10 ns | ns |
| Supply Rail Under-Voltage Lockout | Yes | - |
| Package Options | VSSOP-10, WSON-10 | - |
| Junction Temperature Range | -40°C to 125°C | °C |
Key Features
- Drives both high-side and low-side N-Channel MOSFETs in synchronous buck or half-bridge configurations.
- Single TTL-compatible input with hysteresis.
- Programmable turn-on delays (dead-time) using an external resistor.
- Fast turn-off propagation delays (32 ns typical).
- Under-voltage lockout (UVLO) for both low-side and bootstrapped high-side supply voltages.
- Low power consumption.
- Robust level shift technology for clean output transitions.
- Available in thermally enhanced 10-pin WSON and VSSOP packages.
Applications
- Solid-State Motor Drives
- Half-Bridge and Full-Bridge Power Converters
- Two Switch Forward Power Converters
Q & A
- What is the maximum voltage the LM5106 can handle on the high-side?
The LM5106 can handle rail voltages up to 100V on the high-side.
- What is the peak output sink current of the LM5106?
The peak output sink current is 1.8 A.
- How is the dead-time programmed in the LM5106?
The dead-time is programmed using a single external resistor through tightly matched turn-on delay circuits.
- What are the package options for the LM5106?
The LM5106 is available in 10-pin VSSOP and thermally enhanced WSON packages.
- What is the purpose of the under-voltage lockout (UVLO) feature?
The UVLO feature disables the gate driver when either the low-side or the bootstrapped high-side supply voltage is below the operating threshold.
- What is the typical turn-off propagation delay of the LM5106?
The typical turn-off propagation delay is 32 ns.
- How does the LM5106 manage power consumption?
The LM5106 operates with low power consumption while providing high-speed operation and clean output transitions.
- What type of input signal does the LM5106 support?
The LM5106 supports a single TTL-compatible input signal.
- What is the junction temperature range for the LM5106?
The junction temperature range is -40°C to 125°C.
- What are some common applications of the LM5106?
