Monolithic Power Systems (MPS) MPQ4317 Synchronous Step-Down Converters
Monolithic Power Systems (MPS) MPQ4317 Synchronous Step-Down Converters offer configurable-frequency with integrated internal high-side and low-side power MOSFETs. The MPQ4317 features up to 7A of highly efficient output current (IOUT) with current mode control for fast loop response.
The MPS MPQ4317 Converters support a wide 3.3V to 45V input voltage (VIN) range accommodating a variety of step-down applications in the automotive input environment. The 1.7μA shutdown mode quiescent current enables use 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. The open-drain power good signal indicates whether the output is within 95% to 105% of its nominal voltage.
Protection features include frequency foldback to help prevent inductor current (IL) runaway during start-up, and thermal
shutdown provides reliable, fault-tolerant operation. Additionally, the device's high duty cycle and low-dropout mode are provided for automotive cold-crank conditions.
The MPQ4317 is offered in a QFN-20 (4mm x 4mm) package.
Features
- Wide 3.3V to 45V Operating VIN range
- 7A Continuous Output Current (IOUT)
- 1.7μA Low shutdown supply current
- 18μA Sleep mode quiescent current
- Internal 48mΩ High-Side MOSFET (HSFET) and 20mΩ low-side MOSFET (LSFET)
- 350kHz to 1000kHz Configurable Switching Frequency (fSW) for car battery applications
- Can be synchronized to an external clock
- Out-of-phase synchronized clock output
- 3.3V, 5V Fixed output options
- 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 Modulation (AAM) mode or Forced Continuous Conduction Mode (FCCM)
- Low-dropout mode
- Over-Current Protection (OCP) with hiccup mode
- Available in a QFN-20 (4mm x 4mm) package
- Available in a wettable flank package
- Available in AEC-Q100 grade 1
Applications
- Automotive infotainment
- Automotive clusters
- Advanced Driver Assistance Systems (ADAS)
- Industrial power systems
Related Product
Monolithic Power Systems (MPS) MPQ4312 Synchronous Step-Down Converters
Offers a configurable frequency with integrated internal high-side and low-side power MOSFETs.
Monolithic Power Systems (MPS) MPQ4313-AEC1 Switching Regulators
Feature an integrated internal high-side and low-side power MOSFET.
Monolithic Power Systems (MPS) MPQ4314 Synchronous Step-Down Converters
Offers configurable frequency with integrated internal high-side and low-side power MOSFETs.
Monolithic Power Systems (MPS) MPQ4316 Synchronous Step-Down Converters
Provide 6A of continuous output current with current mode control for fast loop response.
Monolithic Power Systems (MPS) MPQ4315 Synchronous Step-Down Converters
Offers a configurable frequency and integrated internal high-side MOSFET and low-side MOSFET.
Typical Application
Efficiency vs. Load Current
