MP8699B: GaN MOSFET Half-Bridge Driver
Supporting up to 100V Operating Voltage
The MP8699B from Monolithic Power Systems (MPS) is a dedicated half-bridge driver designed for driving GaN enhancement-mode MOSFETs. The device features separate PWM inputs (pulse-width modulation) for the high-side (HS) and low-side (LS), enabling independent and precise control of both switching nodes.
Download DatasheetHigh Switching Speed and Precise Timing
The turn-on and turn-off speeds can be individually adjusted by adding impedance to separate gate loops. Combined with a very low propagation delay and excellent channel-to-channel matching, this ensures fast, reliable, and highly synchronized switching performance.
Efficient Operation with Innovative Bootstrap Technology
Thanks to MPS’ proprietary bootstrap technology, the driver operates from a single supply voltage of 4.5V to 5.5V while supporting DC bus voltages of up to 100V. An optimized charging scheme ensures that the bootstrap capacitor is only charged via the supply voltage VCC when the low-side switch is active (PWML = logic high).
Integrated Protection Mechanisms for High Reliability
An active clamp circuit ensures that the voltage across the bootstrap capacitor does not exceed 105% of VCC. This effectively protects the sensitive gate of the high-side GaN MOSFET from overvoltage and enhances overall system reliability.
Learn more about IGBT & MOSFET Gate Driver ICs.
Key Features
- Supply voltage range: 4.5V to 5.5V
- 1.7A peak source current and 5.2A peak sink current
- Fast rise and fall times of 10ns and 2ns, respectively
- 17ns propagation delay with typically ±1.5ns channel-to-channel mismatch
- Integrated protection features such as undervoltage lockout (UVLO) and bootstrap clamping for reliable operation
- Compact footprint for easy integration: WLCSP-12L (2×2mm)
Applications
- Half-bridge and full-bridge converters
- Synchronous buck converters
- Power modules
The MP8699B is therefore ideally suited for high-frequency switching applications such as DC/DC converters, AC/DC inverters, motor drives, and power management modules that require compact, efficient, and reliable GaN MOSFET control.
What are the Advantages of the MP8699B GaN Half-Bridge Driver from MPS?
The MP8699B provides precise and efficient control of GaN e-mode MOSFETs through separate PWM inputs for high-side and low-side operation. Its low propagation delay and excellent channel matching enable fast and reliable switching. The innovative bootstrap technology allows operation from a single supply voltage while supporting bus voltages up to 100V. In addition, integrated protection features such as an active clamp circuit protect the system from overvoltage and ensure high operational reliability.
Your Contact Person
Thomas Merkel is your contact for GaN half-bridge drivers from MPS.
