Overview
The LM5102SDX/NOPB, produced by Texas Instruments, is a high-voltage gate driver designed to drive both the high side and the low side N-Channel MOSFETs in synchronous buck or half bridge configurations. This device is particularly suited for applications requiring high-speed operation, low power consumption, and clean level transitions from control logic to the high side gate driver. The LM5102 features a floating high-side driver capable of operating with supply voltages up to 100 V and includes an integrated high voltage diode to charge the high side gate drive bootstrap capacitor.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | WSON, VSSOP | - |
| Pins | 10 | - |
| Operating Temperature Range | -40 to 125 | °C |
| Bootstrap Supply Voltage Range | Up to 118 | V dc |
| Turn-Off Propagation Delay | 25 ns (Typical) | ns |
| Rise and Fall Times | 15 ns (Typical) | ns |
| Load Drive Capability | 1000 pF | pF |
| Supply Rail Undervoltage Lockout (UVLO) | Typically 6.9 V | V |
Key Features
- Drives both high-side and low-side N-Channel MOSFETs in synchronous buck or half bridge configurations.
- Independently programmable high and low side rising edge delay using resistors at RT1 and RT2 pins.
- Bootstrap supply voltage range up to 118 V dc.
- Fast turn-off propagation delay (25 ns typical) and fast rise and fall times (15 ns typical).
- Drives 1000-pF loads with minimal delay.
- Supply rail undervoltage lockout (UVLO) protection on both high and low side power rails.
- Low power consumption and robust level shifter for clean level transitions.
- Timer can be terminated midway through the sequence.
Applications
The LM5102SDX/NOPB is ideal for various power management applications, including:
- Synchronous buck converters.
- Half bridge configurations.
- High-voltage power supplies.
- Motor control systems.
- DC-DC converters requiring high-speed and low power operation.
Q & A
- What is the primary function of the LM5102SDX/NOPB?
The LM5102SDX/NOPB is a high-voltage gate driver designed to drive both the high side and the low side N-Channel MOSFETs in synchronous buck or half bridge configurations.
- What are the available package types for the LM5102SDX/NOPB?
The device is available in WSON and VSSOP packages, each with 10 pins.
- What is the operating temperature range of the LM5102SDX/NOPB?
The operating temperature range is from -40°C to 125°C.
- How can the rising edge delay be programmed in the LM5102SDX/NOPB?
The rising edge delay can be independently programmed for both high and low sides using resistors at the RT1 and RT2 pins.
- What is the maximum bootstrap supply voltage for the LM5102SDX/NOPB?
The bootstrap supply voltage range is up to 118 V dc.
- What are the typical rise and fall times for the LM5102SDX/NOPB?
The typical rise and fall times are 15 ns each.
- Does the LM5102SDX/NOPB have undervoltage lockout protection?
Yes, it includes supply rail undervoltage lockout (UVLO) protection on both high and low side power rails.
- How does the LM5102SDX/NOPB manage power consumption?
The device is designed for low power consumption while maintaining high-speed operation.
- Can the timer be terminated midway through the sequence in the LM5102SDX/NOPB?
Yes, the timer can be terminated midway through the sequence.
- What types of applications is the LM5102SDX/NOPB suitable for?
The device is suitable for synchronous buck converters, half bridge configurations, high-voltage power supplies, motor control systems, and DC-DC converters requiring high-speed and low power operation.
