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MPQ8714GL-AEC1

4.5-40V sync buck controller, 1.2A gate drive, ext MOSFETs, QFN-16, AEC-Q100

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Manufacturer Part：

MPQ8714GL-AEC1

Package：

QFN-16 (4 x 4 x 0.9 mm)

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Description

Product Overview

The MPS MPQ8714GL-AEC1 is a synchronous step-down converter controller designed for high-current automotive power supply applications. It drives external N-channel MOSFETs and supports input voltages from 4.5 V to 40 V with programmable switching frequency up to 1 MHz. AEC-Q100 qualified and housed in a QFN-16 (4 x 4 mm) package.

Key Specifications

Input Voltage Range 4.5 V to 40 V
Output Current Depends on external MOSFETs
Switching Frequency 100 kHz to 1 MHz (programmable)
Gate Drive Current 1.2 A source / 1.5 A sink
Reference Voltage 0.8 V (±1%)
Quiescent Current 5 µA (shutdown mode)
Operating Temperature -40 °C to +125 °C
Package QFN-16 (4 x 4 mm)

Features

  • AEC-Q100 qualified for automotive applications
  • Controller-only architecture for flexible MOSFET selection
  • 1.2 A source / 1.5 A sink gate drive capability
  • Programmable switching frequency with SYNC input
  • Current-mode control with cycle-by-cycle limiting
  • External compensation for design flexibility
  • Power-good output and precision enable
  • Protection: OCP, OVP, UVLO, OTP

Applications

  • Automotive high-current POL power supplies
  • Motor drive and battery charger subsystems
  • Industrial distributed power modules
  • High-power ADAS and infotainment systems

The MPS MPQ8714GL-AEC1 is a synchronous step-down DC-DC controller designed for high-current automotive power supply applications where external MOSFET selection is needed for optimal efficiency and thermal performance. Unlike integrated-FET converters, the controller-only architecture allows designers to choose MOSFETs sized for the specific output current requirement, from 5 A to 30 A or more. The 4.5 V to 40 V input range covers 12 V and 24 V automotive bus systems, while the 1.2 A source / 1.5 A sink gate drive provides sufficient drive for low-RDS(on) power MOSFETs. Current-mode control with cycle-by-cycle limiting ensures fast transient response and inherent overcurrent protection. The programmable switching frequency (100 kHz to 1 MHz) enables trade-off between efficiency and inductor size. External compensation provides flexibility to optimize loop response for various output filter configurations. AEC-Q100 qualification ensures reliable operation in automotive environments.

The MPQ8714GL-AEC1 is a current-mode synchronous buck controller that generates PWM signals to drive external N-channel MOSFETs. The high-side MOSFET connects the input to the output inductor during the on-time, while the low-side MOSFET provides synchronous rectification during the off-time. Current-mode control monitors the inductor current through the voltage drop across the high-side MOSFET RDS(on) (lossless current sensing) or an external sense resistor, providing cycle-by-cycle peak current limiting. The error amplifier compares a fraction of the output voltage with the 0.8 V precision reference and adjusts the duty cycle through the PWM comparator. External compensation on the COMP pin allows the designer to set the crossover frequency and phase margin. The adaptive non-overlap circuit prevents cross-conduction by ensuring one MOSFET turns off before the other turns on. The 1.2 A gate drive capability supports fast switching of large MOSFETs, while the bootstrap circuit generates the gate drive voltage for the high-side N-channel MOSFET. Protection features include undervoltage lockout, overcurrent protection with hiccup mode, overvoltage protection, and thermal shutdown.

Pin Name Type Function
1 BST Power Bootstrap capacitor for HS gate drive
2 HG Output High-side gate drive output
3 SW Input Switching node sense
4 LG Output Low-side gate drive output
5 PGND Ground Power ground
6 VCC Power Internal 5V LDO output / decoupling
7 AGND Ground Analog ground
8 FB Input Output voltage feedback
9 COMP I/O Error amplifier compensation
10 SS I/O Soft-start capacitor
11 EN Input Enable / UVLO adjust
12 FREQ/SYNC Input Frequency set / external sync
13 PG Output Power-good (open-drain)
14 ILIM Input Current limit set
15 VIN Input Input supply (4.5-40V)
16 MODE Input Operating mode selection
  • Automotive 12V/24V to low-voltage high-current POL supply
  • Electric vehicle auxiliary power module
  • Industrial motor drive logic power supply
  • ADAS computing platform core voltage regulation
Manufacturer Part Number Package Notes
TI LM5143RGYR VQFN-28 Sync buck controller, 4.5-65V
Infineon TLE9276QXV33 VQFN-48 Multi-output buck controller
MPS MPQ4480GU-AEC1 QFN-16 65V buck controller variant
TI TPS40057PWP HTSSOP-20 Sync buck controller, 8-36V
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Service & Packaging

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Contact Information

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Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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