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Texas Instruments TPS6521855 Power Management IC (PMIC) for AM64x

Texas Instruments TPS6521855 Power Management IC (PMIC) for AM64x is a single chip, power-management IC (PMIC) specifically designed to support the AM64x line of processors in both portable (Li-Ion battery) and non-portable (5V adapter) applications. The Texas Instruments TPS6521855 is characterized across a –40°C to +105°C temperature range, making it suitable for various industrial applications.

Features

  • Three adjustable step-down converters with integrated switching FETs (DCDC1, DCDC2, and DCDC3)
    • DCDC1 (1.1V default, up to 1.8A)
    • DCDC3 (1.8V default, up to 1.8A)
    • VIN range from 2.7V to 5.5V
    • Adjustable output voltage range 0.85V to 1.675V (DCDC1 and DCDC2)
    • Adjustable output voltage range 0.9V to 3.4V (DCDC3)
    • Power save mode at light load current
    • 100% duty cycle for lowest dropout
    • Active output-discharge when disabled
  • One adjustable buck-boost converter with integrated switching FETs (DCDC4)
    • DCDC4 (1.8V default, up to 1.6A)
    • VIN range from 2.7V to 5.5V
    • Adjustable output voltage range from 1.175V to 3.4V
    • Active output-discharge when disabled
  • Two low-quiescent currents, high-efficiency step-down converters for battery backup domain (DCDC5, DCDC6)
    • DCDC5 (1V output)
    • DCDC6 (1.8V output)
    • VIN range from 2.2V to 5.5V
    • Supplied from system power or coin-cell backup battery
  • Adjustable general-purpose LDO (LDO1)
    • LDO1 (3.3V default up to 400mA)
    • VIN range from 1.8V to 5.5V
    • Adjustable output voltage range from 0.9V to 3.4V
    • Active output-discharge when disabled
  • Low-voltage load switch (LS1) with 350mA current limit
    • VIN range from 1.2V to 3.6V
    • 110mΩ (Max) switch impedance at 1.35V
  • 5V load switch (LS2) with 100mA or 500mA selectable current limit
    • VIN range from 2.7V to 5.5V
    • 500mΩ (Max) switch impedance at 5V
  • High-voltage load switch (LS3) with 100mA or 500mA selectable current limit
    • VIN range from 1.8V to 10V
    • 500mΩ (Max) switch impedance
  • Supervisor with built-in supervisor function monitors
    • DCDC1, DCDC2 ±4% tolerance
    • DCDC3, DCDC4 ±5% tolerance
    • LDO1 ±5% tolerance
  • Protection, diagnostics, and control
    • Undervoltage Lockout (UVLO)
    • Always-on push-button monitor
    • Overtemperature warning and shutdown
    • Separate Power-Good output for backup and main supplies
    • I2C interface (address 0x24)

Applications

  • Grid infrastructure
  • Appliances
  • Human-Machine Interface (HMI)
  • Industrial automation
  • Electronic Point of Sale (ePOS)
  • Test and measurement
  • Personal navigation
  • Industrial communications
  • Connected industrial drives

Videos

Simplified Schematic

Schematic - Texas Instruments TPS6521855 Power Management IC (PMIC) for AM64x

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Published: 2021-06-04 | Updated: 2022-09-07