Order- MPQ4312-AEC1
MPQ4312-AEC1
45V, 2A, Low IQ, Synchronous Step-Down Converter with Frequency Spread Spectrum, AEC-Q100 Qualified
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Description
The MPQ4312 is a configurable-frequency, synchronous step-down switching converter with integrated, internal high-side and low-side power MOSFETs (HS-FET and LS-FET, respectively). It provides up to 2A of highly efficient output current (IOUT) with current mode control for fast loop response.
The wide 3.3V to 45V input voltage (VIN) range accommodates a variety of step-down applications in automotive input environments. A 1.7μA shutdown mode quiescent current (IQ) allows the device to be used in battery-powered applications.
High power conversion efficiency across a wide load range is achieved by scaling down the switching frequency (fSW) under light-load conditions to reduce the switching and gate driver losses. An open-drain power good (PG) signal indicates whether the output is within 95% to 105% of its nominal voltage. Frequency foldback helps prevent inductor current (IL) runaway during start-up. Thermal shutdown provides reliable, fault-tolerant operation. High duty cycle and low-dropout mode are provided for automotive cold-crank conditions.
The MPQ4312 is available in a QFN-20 (4mmx4mm) package.
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Features & Benefits
- Wide 3.3V to 45V Operating Input Voltage (VIN) Range
- 2A Continuous Output Current (IOUT)
- 1.7μA Low Shutdown Supply Current (ISHDN)
- 18μA Sleep Mode Quiescent Current (IQ)
- Internal 48mΩ High-Side and 20mΩ Low-Side MOSFETs
- 350kHz to 1000kHz Configurable Switching Frequency (fSW) for Car Battery Applications
- Synchronizable with External Clock
- Out-of-Phase Synchronized Clock Output
- Frequency Spread Spectrum (FSS) for Low EMI
- Symmetric VIN for Low EMI
- Power Good (PG) Output
- External Soft Start (SS)
- 100ns Minimum On Time
- Selectable Advanced Asynchronous Mode (AAM) or Forced Continuous Conduction Mode (FCCM)
- Low-Dropout Mode
- Over-Current Protection (OCP) with Hiccup Mode
- Available in a QFN-20 (4mmx4mm) Package
- Available in a Wettable Flank Package
- Available in AEC-Q100 Grade 1
Active Part Numbers:
MPQ4312GRE-AEC1-Z MPQ4312GRE-AEC1-P
Part numbers ending in P and Z are the same parts. P and Z only indicates reel size.
Meaning of P & Z
MPQ4312-AEC1 Resources
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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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