Overview
The LM5106MMX from 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 part of the LM5106 family and is offered in a thermally enhanced 10-pin WSON package. It features a single PWM input with an enable pin, allowing for programmable dead-time and compatibility with TTL signal levels. The LM5106MMX is known for its robust level shift technology, low power consumption, and fast turn-off propagation delays, making it suitable for a variety of high-voltage applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VDD | 8 | - | 14 | V |
| HS Voltage Range | -1 | - | 100 | V |
| Bootstrap Supply Voltage Range | - | - | 118 | V |
| Peak Output Source Current | 1.2 | - | - | A |
| Peak Output Sink Current | 1.8 | - | - | A |
| Lower Turn-Off Propagation Delay (tLPHL) | 32 | 56 | - | ns |
| Upper Turn-Off Propagation Delay (tHPHL) | 32 | 56 | - | ns |
| Output Rise Time (tR) @ 1000pF | - | 15 | - | ns |
| Output Fall Time (tF) @ 1000pF | - | 10 | - | ns |
| Junction Temperature Range | -40 | - | 125 | °C |
Key Features
- Drives both high-side and low-side N-channel MOSFETs in synchronous buck or half-bridge configurations.
- Programmable dead-time using a single external resistor at the RDT pin, adjustable from 100 ns to 600 ns.
- Single TTL compatible input with enable pin.
- Fast turn-off propagation delays (32 ns typical).
- Supply rail undervoltage lockout (UVLO) for both low-side and high-side supplies.
- Low power consumption.
- Robust level shift technology for high-speed operation with low power consumption.
- Available in 10-pin VSSOP and thermally enhanced 10-pin WSON packages.
Applications
- Solid-state motor drives.
- Half-bridge and full-bridge power converters.
- Two-switch forward power converters.
Q & A
- What is the primary function of the LM5106MMX?
The LM5106MMX 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.
- How is the dead-time programmed in the LM5106MMX?
The dead-time is programmed using a single external resistor at the RDT pin, which can be adjusted from 100 ns to 600 ns.
- What are the typical propagation delays for the LM5106MMX?
The typical turn-off propagation delays are 32 ns for both lower and upper turn-off.
- What is the maximum voltage range for the high-side supply (HS) of the LM5106MMX?
The high-side supply voltage range can go up to 100 V.
- What are the package options available for the LM5106MMX?
The LM5106MMX is available in 10-pin VSSOP and thermally enhanced 10-pin WSON packages.
- What is the purpose of the undervoltage lockout (UVLO) in the LM5106MMX?
The UVLO disables the gate driver when either the low-side or the bootstrapped high-side supply voltage is below the operating threshold.
- How does the LM5106MMX handle output rise and fall times?
The LM5106MMX can drive 1000 pF with a rise time of 15 ns and a fall time of 10 ns.
- What are some common applications of the LM5106MMX?
Common applications include solid-state motor drives, half-bridge and full-bridge power converters, and two-switch forward power converters.
- What is the junction temperature range for the LM5106MMX?
The junction temperature range is from -40°C to 125°C.
- How does the LM5106MMX manage power consumption?
The LM5106MMX operates with low power consumption, making it efficient for various high-voltage applications.
