- MPQ18831
MPQ18831
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Description
The MPQ18831 is an isolated half-bridge gate driver solution with up to a 4A source and 8A sink peak current capacity. The gate driver is designed to drive power switching devices with a short propagation delay and pulse-width distortion.
By utilizing MPS's proprietary, capacitive-based isolation technology, the driver can provide up to 5kVRMS of isolation voltage (per UL 1577) with a wide-body SOIC package. In addition, the common-mode transient immunity (CMTI) between the input side and output driver exceeds 150kV/μs. With these advanced features, the drivers operate with high efficiency, high power density, and robustness across a wide variety of automotive power applications.
The MPQ18831 integrates dual-channel gate drivers in one package. Each output can be grounded to separate grounds or connected to a positive or negative voltage reference. The secondary topology can be configured as a half-bridge high-side (HS) or low-side (LS) driver that is controlled by two independent input signals. To prevent shoot-through in the half-bridge driver, the MPQ18831 provides a configurable dead time (DT) set by an external resistor.
A wide primary-side VDDI supply range makes the driver well-suited to be interfaced with 3.3V or 5V digital controllers. The secondary-side driver accepts up to 30V supply, and all of the supply voltage pins feature various under-voltage lockout (UVLO) protections.
The MP18831 is available in a narrow-body or wide-body SOIC-16 package (SOIC-16 NB or SOIC-16 WB, respectively), an SOIC16-14 (3mm creepage) package, or an LGA-13 (5mmx5mm) package.
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Features & Benefits
- Dual-Input Half-Bridge Driver
- Up to 5kVRMS Input to Output Reinforced Isolation (SOIC-16 WB Package)
- 1850VDC Functional Isolation between Two Secondary-Side Drivers (SOIC16-14 WB Package)
- 1500VDC Functional Isolation between Two Secondary-Side Drivers (SOIC-16 NB/WB Packages)
- 700VDC Functional Isolation between Two Secondary-Side Drivers (LGA-13 Package)
- Common-Mode Transient Immunity (CMTI) >150kV/μs
- 2.8V to 5.5V Input VDDI Range to Interface with Transistor-to-Transistor Logic (TTL) and CMOS-Compatible Inputs
- Up to 30V Output Drive Supply with Several Under-Voltage Lockout (UVLO) Protection Options
- 4A Source, 8A Sink Peak Current Output
- 50ns Typical Propagation Delay with Short ±5ns Distribution from Part to Part
- Overlap Protection and Configurable Dead Time (DT) Control
- -40°C to +150°C Operating Junction Temperature Range
- Available in AEC-Q100 Grade 1
- UL 1577 Certified:
- SOIC-16 NB Package: 3kVRMS Isolation for 60s
- SOIC-16 WB Package: 5kVRMS Isolation for 60s
- LGA-13 (5mmx5mm) Package: 2.5kVRMS Isolation for 60s
- DIN EN IEC 60747-17 (VDE 0884-17): 2021-10 Certification (Pending)
- CQC Certification Per GB4943.1-2011 (Pending)

Active Part Numbers:
MPQ18831-8CGY-Z MPQ18831-8CGY-P MPQ18831-8EGY-Z MPQ18831-8EGY-P MPQ18831-A8BGY-Z MPQ18831-A8BGY-P MPQ18831-A8CGY-Z MPQ18831-A8CGY-P MPQ18831-A8EGY-Z MPQ18831-A8EGY-P MPQ18831-8EGYE-Z MPQ18831-8EGYE-P MPQ18831-8CGSE-Z MPQ18831-8CGSE-P MPQ18831-A8BGLU-Z MPQ18831-A8BGLU-P
Part numbers ending in P and Z are the same parts. P and Z only indicates reel size.
Meaning of P & Z
MPQ18831 Resources
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ARTICLE
DESIGNING ONBOARD CHARGERS FOR HIGH PERFORMANCE AND POWER DENSITYARTICLEElectric vehicles (EVs) are becoming more ubiquitous each day, with plenty of countrywide and global incentives to make these vehicles more cost-effective for consumers (see Figure 1). This has resulted in more than 13 million electrified vehicle sales in 2023, which is a greater than 30% increase for battery electric vehicles (BEV) and plug-in hybrid electric vehicles (PHEV) when compared to the ...
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PRODUCT CATEGORY
ISOLATED GATE DRIVERSPRODUCT CATEGORY -
APPLICATION
ONBOARD CHARGING MODULE (OBCM)APPLICATIONElectric vehicles (EVs) are becoming more present every day, with the adoption of EVs growing at an exponential rate. Onboard charging (OBC) is a very important part of EVs, since it determines the maximum possible charge rate while an AC charger is connected to the vehicle. The maximum charge capability for a fully electric vehicle is typically between 6.6kW and 22kW, and for a plug-in hybrid veh...
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APPLICATION
DC FAST CHARGING STATIONAPPLICATIONDC fast charging stations are becoming more common with the increased adoption of electric vehicles. Charging stations are a vital part of the infrastructure along major highways and populated suburbs, ensuring that electric vehicles have a place to charge during long-distance travel and day-to-day driving. These systems are often comprised of multiple 25kW to 75kW modules to create fast charging ...
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PRODUCT CATEGORY
ISOLATED GATE DRIVERSPRODUCT CATEGORY -
PRODUCT
MPQ18811-AEC1PRODUCTIsolated, Single-Channel Gate Driver, AEC-Q100 Qualified
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PRODUCT
MP18851PRODUCTIsolated, Dual-Input Control, Independent Dual-Channel Gate Driver
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PRODUCT
MP18811PRODUCTIsolated Single-Channel Gate Driver with Split Outputs
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PRODUCT
MP18831PRODUCTIsolated, Dual-Input Control, High-Side/Low-Side Half-Bridge Gate Driver
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PRODUCT
MP18871PRODUCTIsolated, PWM-Input Control, High-Side/Low-Side Half-Bridge Gate Driver
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PRODUCT
MPQ18833-AEC1PRODUCTIsolated Half-Bridge Gate Driver with 5.84mm Channel-to-Channel Spacing, AEC-Q100 Qualified
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MPSCHOLAR
APPLICATIONS & USE CASES OF ISOLATED POWER SUPPLIES IN GATE DRIVINGMPSCHOLARIn a wide variety of applications, ranging from electric automobiles to industrial machinery, variable-speed AC/DC drives play a crucial role in managing the speed and torque of electric motors. Functionality: The speed of an electric motor can be adjusted by these drives by adjusting the power that is provided to them. This is accomplished by modulation techniques such as pulse width modulation ...
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MPSCHOLAR
CHALLENGES AND SOLUTIONS IN DESIGNING ISOLATED POWER SUPPLIES FOR GATE DRIVINGMPSCHOLARThe process of designing an isolated power supply for gate driving involves a unique set of challenges, particularly when it comes to resolving electrical requirements. These issues, which include power output and stability in addition to electromagnetic interference (EMI), call for the development of creative solutions in order to guarantee the effective and dependable operation of gate drivers i...
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MPSCHOLAR
TYPES OF ISOLATED POWER SUPPLIES FOR GATE DRIVERSMPSCHOLARFlyback converters are an essential type of isolated power supply commonly found in gate driver circuits. They are particularly well-suited for applications that prioritize compact size, efficiency, and reliable isolation at lower to moderate power levels. Known for their simplicity and versatility, flyback converters operate by storing energy in a magnetic field during one phase and transferring ...
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MPSCHOLAR
ISOLATED POWER SUPPLY ARCHITECTURESMPSCHOLARCentralized isolated power supply architectures play a crucial role in gate driver applications, offering a streamlined approach to power distribution and isolation that is specifically designed to meet the needs of gate driving requirements. This architecture type centralizes the power supply into a single unit, which then distributes power to different components of the system, ensuring electric...
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MPSCHOLAR
NEED FOR ISOLATED GATE DRIVING POWER SUPPLIESMPSCHOLARFundamental Safety Concerns: Ensuring safety is of utmost importance when it comes to gate-driving power supplies, especially in high-power applications. Isolation is essential for ensuring users' safety and preventing damage to sensitive electronic components caused by high voltage levels or electric shock. Protection Against Direct Contact: Isolation guarantees that there is no direct elec...
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MPSCHOLAR
ISOLATED POWER SUPPLIES FOR GATE DRIVINGMPSCHOLAR -
MPSCHOLAR
CASE STUDY: AN IN-DEPTH LOOK AT A SPECIFIC APPLICATIONMPSCHOLARWithin the context of an advanced electric vehicle (EV) powertrain system, the development of isolated gate drivers is the primary emphasis of this individual case study. Power economy, dependability, and safety are of the utmost importance in the electric vehicle industry, which is a sector that is quickly evolving. The purpose of this in-depth investigation is to demonstrate the significant role...
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MPSCHOLAR
PRACTICAL APPLICATIONS AND USE CASESMPSCHOLARFigure 1: Common Applications of Isolated Drivers Isolated gate drivers, as essential interfaces between control circuits and power electronics are essential components in motor control systems. These drivers are important to the operation of these systems. The power switches, such as IGBTs or MOSFETs are responsible for controlling the speed, torque, and direction of the motor. Their contribut...
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MPSCHOLAR
CHALLENGES IN ISOLATED GATE DRIVERS DESIGNMPSCHOLARThermal management and heat dissipation are two of the most critical issues that arise during the design process of isolated gate drivers. These elements are quite important because temperature has an effect on gate drivers' dependability, performance, and longevity. Heat Generation Sources: In isolated gate drives, the primary sources of heat generation are two different sources, respectively. F...
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MPSCHOLAR
COMPONENTS AND ARCHITECTUREMPSCHOLARPulse-Width Modulation (PWM) Signals: PWM signals play a crucial role in the functioning of isolated gate drivers, particularly in the realm of power electronics. These signals adjust the length of time that power switches (such as MOSFETs or IGBTs) remain in the 'on' state by modifying the width of the pulse while maintaining a consistent frequency. PWM signals play a vital role in the regulation...
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MPSCHOLAR
WORKING PRINCIPLES OF ISOLATED GATE DRIVERSMPSCHOLAREnsuring the safety and integrity of electronic systems is of utmost importance, especially in applications involving high voltages or where electrical isolation is necessary between the control and power stages. Figure 1: Isolated Gate Driver Concept Protecting Control Circuitry: One of the main purposes of isolation in gate drivers is to safeguard the low-voltage control circuitry from the p...
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MPSCHOLAR
INTRODUCTION TO GATE DRIVERSMPSCHOLARGate drivers are essential components in modern electronics. They are specialized circuits that have the important task of controlling the operation of power switches, such as MOSFETs and IGBTs. Their main purpose is to supply the required drive voltage and current to the gate of these power devices. Figure 1: Gate Drive between Microcontroller and Power Transistor Fundamental Role: Gate drive...
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MPSCHOLAR
ISOLATED GATE DRIVERSMPSCHOLAR -
PRODUCT
MPQ18851PRODUCTAutomotive, Isolated, Independent, Dual-Channel Gate Driver
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