MP5475中文资料Fully Integrated, 12V, 6A, Quad-Buck PMIC with I2C, Telemetry, and Flexible System Configurations数据手册MPS规格书

描述 Description

The MP5475 is a complete power management IC (PMIC) that integrates four high-efficiency step-down DC/DC converters and a flexible logic interface.

The integrated DC/DC converters provide constant-on-time (COT) control to achieve fast transient response. In addition, the 1MHz switching frequency (fSW) minimizes the external inductor and capacitor size. Full protection features include under-voltage lockout (UVLO), over-current protection (OCP), under-voltage protection (UVP), and thermal shutdown.

The output voltage (VOUTx) (where x = A, B, C, or D) can be adjusted via the I2C bus, or it can be preset by the multiple-time programmable (MTP) memory function. The power on/off sequence can also be configured by the MTP, or it can be controlled online via the I2C.

The first two rails or the last two rails can work in either independent mode or parallel mode, which can be configured via the MTP. The current-sharing function is implemented in parallel mode.

The MP5475 requires a minimal number of external components, and it is available in a space-saving QFN-35 (5mmx5mm) package.

特性 Features

• Wide 3V to 16V Input Voltage (VINx) (where x = A, B, C, or D) Range
• Adaptive Constant-On-Time (COT) Control for Ultra-Fast Transient Response
• Four High-Efficiency Step-Down Converters:
• Buck A: 6A, 15mΩ/5mΩ DC/DC Converter
• Buck B: 6A, 15mΩ/5mΩ DC/DC Converter
• Buck C: 6A, 15mΩ/5mΩ DC/DC Converter
• Buck D: 6A, 15mΩ/5mΩ DC/DC Converter

• Buck A/B and Buck C/D Support Up to 12A of Continuous Current in Dual-Phase Mode
• 2 x 50mA Low-Dropout (LDO) Regulators
• Differential Output Voltage (VOUTx) (where x = A, B, C, or D) Remote Sense
• I2C Slave Address Configurable via the Multiple-Time Programmable (MTP) Memory
• I2C-Configurable, 0.3V to 2.048V Reference Voltage (VREF) in 2mV Steps with Slew Rate Control
• Configurable 500kHz to 2MHz Switching Frequency (fSW)
• Open-Drain Power Good (PG) Indication and General Status Interrupt
• MTP-Configurable Soft-Start (SS)/Soft Shutdown and Delay
• Selectable Pulse-Frequency Modulation (PFM)/Pulse-Width Modulation (PWM) Mode, Adjustable Frequency, and Current Limit via the I2C
• Pre-Biased Start-Up
• Over-Current Protection (OCP)
• Under-Voltage Lockout (UVLO)
• Under-Voltage Protection (UVP)
• Over-Voltage Protection (OVP)
• Thermal Shutdown Protection
• Available in a QFN-35 (5mmx5mm) Package
• Optimized Performance with MPS Inductor MPL4020 Series