Order- MPQ4314-AEC1
MPQ4314-AEC1
45V, 4A, Low IQ, Synchronous Step-Down Converter with Frequency Spread Spectrum, AEC-Q100 Qualified
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Description
The MPQ4314 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 can provide up to 4A 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. The 1.7μA shutdown current 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 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 prevents inductor current runaway during start-up. Thermal shutdown provides reliable, fault-tolerant operation. A high duty cycle and low-dropout (LDO) mode are provided for automotive cold crank conditions. The MPQ4314 is available in a QFN-20 (4mmx4mm) package.
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Features & Benefits
- Wide 3.3V to 45V Operating Input Voltage (VIN) Range
- 4A Continuous Output Current (IOUT)
- 1.7μA Low Shutdown Current
- 18μA Sleep Mode Quiescent Current (IQ)
- Internal 48mΩ High-Side MOSFET (HS-FET) and 20mΩ Low-Side MOSFET (LS-FET)
- 350kHz to 1000kHz Configurable Switching Frequency (fSW) for Car Battery Applications
- Synchronize to External Clock
- Out-of-Phase Synchronized Clock Output
- 3V Fixed Output
- Frequency Spread Spectrum (FSS) for EMI Reduction
- Symmetric VIN for EMI Reduction
- Power Good (PG) Output
- External Soft Start (SS)
- 100ns Minimum On Time (tON_MIN)
- Selectable Advanced Asynchronous Modulation (AAM) Mode or Forced Continuous Conduction Mode (FCCM)
- Low-Dropout (LDO) Mode
- Over-Current Protection (OCP) with Hiccup Mode
- Available in a QFN-20 (4mmx4mm) Package
Active Part Numbers:
MPQ4314GRE-AEC1-Z MPQ4314GRE-AEC1-P MPQ4314GRE-33-AEC1-Z MPQ4314GRE-33-AEC1-P
Part numbers ending in P and Z are the same parts. P and Z only indicates reel size.
Meaning of P & Z
MPQ4314-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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