MPQ4232AGVE-0000-AEC1-Z 3-36V, 6A, 530kHz Buck-Boost Converter QFN-19

MPQ4232AGVE-0000-AEC1-Z 3-36V, 6A, 530kHz Buck-Boost Converter QFN-19

The MPQ4232A is a synchronous, four-switch buck-boost converter with integrated MOSFETs.

Key Specifications

Features

• 6A Buck-Boost Converter with Four Integrated MOSFETs
• 3V to 36V Operating Input Voltage (VIN) Range, 2.7V Falling Voltage
• 1V to 24V Output Voltage (VOUT) Range
• I2C-Configurable Reference Voltage (VREF) Range: 0.1V to 2.147V with 1mV Resolution
• Up to 98.14% Peak Efficiency
• Integrated 5V/60mA Low-Dropout (LDO) Regulator to Supply External Microcontroller Unit (MCU)
• Selectable Input or Output Constant-Current (CC) Limit with 5% Accuracy via Factory Trimming FEATURES (continued)
• Accurate Output Current (IOUT) Monitor
• Selectable 280kHz, 400kHz, or 530kHz Switching Frequency (fSW) with Frequency Spread Spectrum (FSS)
• Selectable Automatic Pulse-Frequency Modulation (PFM) or Pulse-Width Modulation (PWM) Mode and Forced PWM (FPWM) Mode

Typical Application Circuit

Applications

• Generic Buck-Boost Applications
• USB Power Delivery (PD)
• Wireless Charging
• Automotive Camera Electronic Control Units (ECUs)
• Automotive Lighting

Design Notes

• Size the inductor for the ripple current at the actual switching frequency, typically 30% of the DC load — not for the DC rating alone.
• The hot loop from input capacitor through the switch to ground sets conducted EMI. Keep that copper area as small as the layout allows.
• Output ripple is set by the capacitor ESR and its DC-bias derating; a 10 µF ceramic often behaves like 4 µF at the rated output voltage.
• Route the feedback divider from the output capacitor terminals, away from the switch node.

Common Questions