- MPQ3445-AEC1
MPQ3445-AEC1
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Description
The MPQ3445-AEC1 is a high-efficiency, current-mode, synchronous boost controller with a wide input voltage (VIN) range. It can be used as a pre-boost controller to maintain the output voltage (VOUT) from a vehicle battery during automotive cranking or from a backup battery. The MPQ3445-AEC1 is capable of driving 10V MOSFETs, greatly improving efficiency and minimizing power loss.
The MPQ3445-AEC1 provides either an I2C or SPI interface to program some key operating parameters, such as the switching frequency (fSW), current limit, light-load mode, frequency spread spectrum (FSS), dead time (DT), and slope compensation. fSW can be adjusted from 250kHz to 2.5MHz or synchronized directly to an external source.
The MPQ3445-AEC1 operates in low quiescent current (IQ) bypass mode in the condition that VOUT is above the preset bypass threshold while VIN is above VOUT. When VOUT drops below the wake threshold, the part exits bypass mode and resumes normal operation with the high-side MOSFET (HS-FET) and low-side MOSFET (LS-FET) switching to regulate the output. The MPQ3445-AEC1 also includes under-voltage lockout (UVLO), current limit, and thermal shutdown protection.
The MPQ3445-AEC1 is available in a QFN-21 (5mmx5mm) package, and is AEC-Q100 qualified.
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Features & Benefits
- Designed for Automotive Applications:
- Supports 2.9V Cold Crank
- Supports 42V Load Dump
- -40°C to +150°C Operating Junction Temperature (TJ)
- Available in AEC-Q100 Grade 1
- Increases Battery Life:
- 40μA Bypass Mode Quiescent Current (IQ)
- Automatic Wakeup and Bypass Mode Transition
- 10V Gate Driving Capability
- Configurable via I2C or SPI Interface:
- Switching Frequency (fSW)
- Slope Compensation
- Current Limit Reference
- Light-Load Mode Selection
- Pulse-Skip Modulation (PSM) for Ultra-Light Loads
- Bypass Mode Threshold and Hysteresis
- SYNCIN Phase and Frequency Division
- Synchronous or Nonsynchronous Operation
- Frequency Spread Spectrum (FSS)
- Additional Features:
- fSW Can Be Synced to an External 250kHz to 2.5MHz Clock
- Clock SYNC Out
- Thermal Warning and Thermal Shutdown
- Multi-Phase Capable
- Boost Status Indicator
- Available in a QFN-21 (5mmx5mm) Package
- Available in a Wettable Flank Package
- Functional Safety System Design Capable:
- MPSafeTM-Compatible – Functional Safety Supporting Document Available
Active Part Numbers:
MPQ3445GUE-xxxx-AEC1-Z MPQ3445GUE-xxxx-AEC1-P MPQ3445GUE-0000-AEC1-Z MPQ3445GUE-0000-AEC1-P
Part numbers ending in P and Z are the same parts. P and Z only indicates reel size.
Meaning of P & Z
MPQ3445-AEC1 Resources
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APPLICATION
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ALL LED LIGHTINGAPPLICATIONAutomotive LED lighting systems are comprised of the headlights, interior lights, rear lights, small lights, LED pixel light controllers, and DC/DC LED drivers. With increasingly dynamic and accurate LED lighting features that integrate flexible control, animation, and energy efficiency, key functions including supply, control, sense, actuation, and communication are also becoming more complex. Th...
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DISPLAY (NAVIGATION, HEADS-UP, CLUSTER)APPLICATIONAutomotive displays — which include the center display, heads-up display (HUD), and gauge instrument cluster — show key information and interactive content to the driver. The center information display is connected to the head unit, and provides navigation and other in-cabin infotainment controls. The automotive HUD and gauge instrument cluster provide easy-to-access information for the driver. Th...
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APPLICATION
HEAD UNITS (MID-RANGE)APPLICATIONAutomotive head unit designs have evolved from the traditional hardware interfaces into sophisticated infotainment systems that offer various in-cabin functionalities. These features include navigation, wireless connections, passenger entertainment, gesture recognition, and voice control. As consumer expectations for infotainment features continue to increase, manufacturers face design challenges ...
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APPLICATION
HEAD UNITS (HIGH-END)APPLICATIONAutomotive head unit designs have evolved from the traditional hardware interfaces into sophisticated infotainment systems that offer various in-cabin functionalities. These features include navigation, wireless connections, passenger entertainment, gesture recognition, and voice control. As consumer expectations for infotainment features continue to increase, manufacturers face design challenges ...
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REARVIEW CAMERAS (COAXIAL)APPLICATIONRearview cameras are perhaps the most well-known camera subsystem used in advanced driver assistance systems (ADAS) applications. As this feature is being offered and expected in more and more vehicles, these camera systems must offer high integration and fast data processing to enable accurate, real-time monitoring of possible hazards behind the vehicle and channeling information directly to an L...
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FRONT-FACING CAMERAS (OFF BATTERY)APPLICATIONFront-facing cameras are an increasingly popular camera subsystem used in advanced driver assistance systems (ADAS) applications. Because this feature is becoming standard in more and more vehicles, off-battery camera systems must offer high integration and fast data processing to enable accurate, real-time monitoring of possible hazards in front of the vehicle, in addition to assisting with integ...
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DRIVER MONITORING SYSTEMSAPPLICATIONDriver monitoring systems are one of the latest developments in automotive safety technology. As part of a holistic human-machine interface (HMI), driver monitoring systems track vital sign parameters and driver attentiveness, so that in the event that the driver is unable to operate the vehicle, assistance can be provided. Of course, advanced new features add design complexity and additional cons...
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ARTICLE
DESIGN CONSIDERATIONS TO SUSTAIN AUTOMOTIVE CRANK CONDITIONSARTICLEModern vehicles using 12V battery systems are subjected to a number of transient conditions. Some transients involve high-voltage pulses, while others may be under low-voltage conditions. Crank transients are low-voltage conditions that occur when a car engine starts, and the car battery drops several volts below its normal operating range for a brief time. The requirements to maintain normal veh...
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MPS SOLUTIONS FOR INTELLIGENT DRIVINGARTICLEThe four modern trends of the automotive industry are electrification, intelligence, networking, and sharing. Among these development trends, intelligence requires advanced on-board sensors, controllers, and actuators. Highly intelligent systems tend to have more sensors. As such, the number and variety of cameras/sensors installed on cars increase daily. These include the cameras installed on th...
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