MPQ4373-AEC1

MPQ4373-AEC1

36V, 6A to 11A, Low-EMI, Synchronous Step-Down Converter with ZDP^TM, AEC-Q100 Qualified

概要

The MPQ4373-AEC1 family of buck converters are configurable-frequency (200kHz to 2.5MHz), synchronous step-down switching regulators with integrated, low on-resistance high-side MOSFETs (HS-FETs) and low-side MOSFETs (LS-FETs). The family covers a 6A to 11A output current (I_OUT) range and employs Zero-Delay pulse-width modulation (PWM) Control (ZDP^TM), an MPS-exclusive technology that delivers fast transient response while reducing external capacitor count.

The wide 3.3V to 36V input voltage (V_IN) range accommodates a variety of step-down applications in automotive input environments. A 1.8μA shutdown-mode quiescent current (I_Q) allows the device to be used in battery-powered applications. High power conversion efficiency across the wide load range is achieved by scaling down the switching frequency (f_SW) under light-load conditions to reduce switching and gate driving losses.

An open-drain power good (PG) signal indicates whether the output is within 94% to 106% of its nominal voltage. Frequency foldback prevents inductor current (I_L) runaway during start-up. Thermal shutdown provides reliable, fault-tolerant operation. A high duty cycle and low-dropout (LDO) mode support automotive cold-crank conditions.

The MPQ4373-AEC1 is available in an LGA-16 (3.5mmx4.5mm) package. It is available in AEC-Q100 Grade 1.

機能と利点

Designed for Automotive Transients:
- 3.3V to 36V Input Voltage (V_IN) Range
- 6A to 11A Output Current (I_OUT)
- Load Dump Up to 42V
- Low-Dropout (LDO) Mode
- Available in AEC-Q100 Grade 1
Designed for High-Performance and Reduced Component Overhead:
- Zero-Delay Pulse-Width Modulation (PWM) Control (ZDP^TM) for Fast Transient Response and Fewer Capacitors
- ±1% Output Accuracy
- Fixed Output Voltage (V_OUT): 1V, 1.2V, 1.8V, 2.5V, 3.3V, 3.8V, or 5V
- Adjustable V_OUT Output Up to 12V
- Internal Soft Start (SS)
- Output Discharge from SW
- 30ns Minimum On Time (t_{ON_MIN})

High Efficiency for Increased Battery Life and Improved Thermals:

1.8μA Shutdown Current, 3.5μA Standby Current
Advanced Asynchronous Modulation (AAM) Mode Increases Efficiency under Light Loads
Integrated, Low-Resistance High-Side MOSFET (HS-FET) and Low-Side MOSFET (LS-FET)

Optimized for Low EMC/EMI: