MPQ86940 40A Intelli-PhaseTM Solution in TQFN-21 (4mmx5mm) Package, AEC-Q100

MPQ86940 40A Intelli-PhaseTM Solution in TQFN-21 (4mmx5mm) Package, AEC-Q100

The MPQ86940 is a monolithic half-bridge with built-in internal power MOSFETs and gate drivers.

Key Specifications

Features

• Wide Operating Input Voltage (VIN) Range
• 40A Output Current (IOUT)
• Accepts Tri-State Pulse-Width Modulation (PWM) Signal
• Built-In Bootstrap (BST) Switch
• Quiet SwitcherTM Technology
• Accu-SenseTM Current Sense
• Temperature Sense
• Current-Limit Protection and Fault Flag
• Over-Temperature Protection (OTP) and Fault Flag
• Compatible with Multi-Phase Operation

Typical Application Circuit

Applications

• Autonomous Driving System-on-Chips (SoCs)

Design Notes

• Rail sequencing order and delay are part of the SoC power-up contract; a wrong order latches the processor even though every rail is in spec.
• In multiphase designs, current balance depends on the loop matching between phases, so keep the layout symmetric.
• Digital interfaces (PMBus, I²C) need pull-ups to the correct rail and a defined state during power-up.
• Thermal design is a system problem here: the PMIC sits next to the load it feeds, so budget the shared copper, not the package alone.

Common Questions