BD71847AMWV
System PMIC for i.MX 8M Mini Family

BD71847AMWV integrates all power rails required by i.MX 8M Mini processors and system peripherals. In addition to integrate a sequencer compatible with power modes supported by i.MX 8M Mini processors, making it possible to significantly reduce the development time, decrease size, and simplify application design.

The power supply circuit of the BD71847AMWV, designed specifically for the power supply system of the i.MX 8M Mini processor family, integrates an 6 buck converters, 6 LDOs, and control logic that allows it to supply power not only to the processor, but the required DDR memory as well – all from a single chip. A 1.8V/3.3V power switch for SDXC cards is also built in, along with a 32.768kHz crystal oscillator driver and multiple protection circuits such as output short-circuit, output over-voltage/current, and thermal shutdown.
Buck conversion efficiency from 83 to 95% is achieved for 0.7V to 3.3V output, and the wide input voltage range from 2.7V to 5.5V supports a variety of power sources, from batteries to USB, making them ideal for i.MX 8M Mini applications.
Furthermore, when single-sided mounting and Type-3 PCB is assumed, 42 fewer parts are needed compared with discrete solutions, reducing PCB area by up to 42%.

Data Sheet Buy * Sample *
* This is a standard-grade product.
For Automotive usage, please contact Sales.

Product Detail

 
Part Number | BD71847AMWV-E2
Status | Recommended
Package | UQFN56BV7070
Unit Quantity | 1500
Minimum Package Quantity | 1500
Packing Type | Taping
RoHS | Yes

Specifications:

Grade

Standard

Channel(DCDC)[ch]

6

SW frequency(Max.)[MHz]

2.0

Channel(LDO)[ch]

6

Operating Temperature (Min.)[°C]

-40

Operating Temperature (Max.)[°C]

105

Package Size [mm]

7x7 (t=1)

Features:

  • 6 Buck Regulators
  • 2.0 MHz Switching Frequency.
    (BUCK1, BUCK2, BUCK5, BUCK7, and BUCK8).
  • 1.5MHz Switching Frequency. (BUCK6)
  • Target Efficiency: 83% to 95%.
  • 6ch Linear Regulators (6 LDOs)
  • Power Mux Switch
  • 1.8V/3.3V Input: 500 mΩ(Max)
  • 32.768 kHz Crystal Oscillator Driver
  • Power Button Detector
  • Protection and Monitoring: Soft Start, Power Rails Fault Detection, UVLO, OVP and TSD
  • OTP Configurable Power Sequencing
  • OTP and Software Programmable Output Voltage, Ramp rates.
  • Hardware Signaling with SoC for Transition into or out of Low Power States
  • Interfaces:
  • I2C: 100 kHz/400 kHz, 1 MHz
  • Power-on Reset Output: POR_B, RTC_RESET_B,
  • Watchdog Reset Input: WDOG_B:
  • Power State Control: PMIC_STBY_REQ, PMIC_ON_REQ, PWRON_B
  • Interrupt to SoC: IRQ_B
  • Type3 PCB Applicable

Design Resources

 

Documents

White Paper

  • ISO 26262: Functional Safety Standard for Modern Road Vehicles
  • Enhancing Efficiency By Reducing Converter Stages & RON In Power Management ICs

Application Note

  • Platform Design Guide
  • BD71847AMWV Frequently Asked Questions
  • BD71847AMWV 1x22μF Buck Output Capacitor
  • Errata information on product "BD71847MWV"

Technical Articles

Schematic Design & Verification

  • Importance of Probe Calibration When Measuring Power: Deskew
  • Impedance Characteristics of Bypass Capacitor

Thermal Design

  • What Is Thermal Design
  • Method for Calculating Junction Temperature from Transient Thermal Resistance Data
  • Thermal Resistance

Tools

Models

  • BD71847AMWV Reference Schematic Data
  • Reference BOM List
  • BD71847AMWV Schematic Data For Cadence OrCad
  • Schematic Checklist
  • EVK Information
  • Linux kernel device drivers software
  • SOM Board Information - InnoComm WB15
  • SOM Board Information - SECO SBC-C61
  • SOM Board Information - Technexion PICO-IMX8M-MINI
  • SOM Board Information - Variscite DART-MX8M-MINI
  • SOM Board Information - Variscite DART-MX8M-MINI Evaluation Kits

2D/3D/CAD

  • BD71847AMWV Layout Data (Both Surfaces Mount)
  • BD71847AMWV Layout Data
  • UQFN56BV7070 Footprint / Symbol

Packaging & Quality

Package Information

  • Package Information

Manufacturing Data

  • Factory Information

Environmental Data

  • REACH SVHC Non-use Declaration