MPQ4340A-AEC1 Synchronous Step-Down Converters

Product Highlights > MPQ4340A-AEC1 Synchronous Step-Down Converters

            MPQ4340A-AEC1 Synchronous Step-Down Converters
                    MPS 36 V, 2 A to 6 A, low-EMI, fast transient, scalable, synchronous step-down converters feature ZDPTM and are AEC-Q100 qualified
    

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MPS MPQ4340A-AEC1 is a synchronous step-down switching regulator featuring configurable switching frequencies from 350 kHz to 2.5 MHz. It integrates both high-side (HS-FET) and low-side (LS-FET) power MOSFETs, delivering between 2 A and 6 A of efficient output current (I_OUT). The device utilizes proprietary zero-delay pulse-width modulation (ZDPTM) control for fixed-frequency operation, ensuring excellent transient performance.

Designed with a broad input voltage range of 3.3 V to 36 V and capable of handling up to 42 V load dump conditions, the MPQ4340A-AEC1 is well-suited for automotive environments. Its ultra-low quiescent current of 1 μA in shutdown mode makes it a strong fit for power-conscious battery-powered applications.

To maintain high efficiency across varying loads, the MPQ4340A-AEC1 automatically reduces switching frequency at light loads, cutting down on switching and gate drive losses. A power good (PG) output with open-drain configuration flags when the output voltage is within 94% to 106% of its nominal value.

Robust protection features include thermal shutdown to ensure reliable operation in fault conditions. Additionally, the device supports a high duty cycle and a low-dropout (LDO) mode, allowing it to operate through cold-crank scenarios typical in automotive systems.

The MPQ4340A-AEC1 is offered in a compact, 3 mm x 4 mm QFN-17 package and meets AEC-Q100 Grade 1 standards for automotive reliability.

Features

Designed for automotive applications:
- 42 V load dump tolerance
- Continuous operation: up to 36 V
- LDO mode
- 20 ns minimum on time (t_{ON_MIN})
- Operating junction temperature (T_J): -40°C to +150°C
- Available in AEC-Q100 Grade 1
Highly scalable family:
- 2 A to 6 A output current (I_OUT) versions in pin-compatible family
- Multi-phase capability: up to eight phases
Designed for high performance and reduced component overhead:
- Zero-delay pulse-width modulation (PWM) control (ZDPTM) for extremely fast transient response and fewer external capacitors
- Fixed-output options: 1 V, 1.1 V, 1.8 V, 2.5 V, 3 V, 3.3 V, 3.8 V, 4 V, or 5 V
- Adjustable-output options: up to 7.5 V
- Synchronizable to external clock
- PG output
- External soft start (SS)
- Overcurrent protection (OCP) with hiccup mode

High efficiency for increased battery life and improved thermals:
- 1 μA low shutdown supply current
- 3 μA sleep-mode quiescent current (I_Q)
- Advanced asynchronous modulation (AAM) mode increases efficiency under light loads
- Internal 60 mΩ/35 mΩ high-side MOSFET (HS-FET)/low-side MOSFET (LS-FET)
Optimized for low EMC/EMI:
- Configurable 350 kHz to 2.5 MHz switching frequency (f_SW)
- Symmetric V_IN pinout placement
- Frequency spread spectrum (FSS) modulation
- CISPR 25 class 5 compliant
- MeshConnect^TM flip-chip package in QFN-17 (3 mm x 4 mm) with wettable flanks
Functional safety system design capability:
- MPSafe^TM-compatible: functional safety supporting document available

Applications

Automotive clusters
Automotive infotainment

Advanced driver-assistance systems (ADAS)
Industrial power systems