Texas Instruments TPS6521905/TPS6521905-Q1 PMIC

Texas Instruments TPS6521905/TPS6521905-Q1 Power Management IC (PMIC) is designed to supply a wide range of SoCs in portable and stationary applications. The device is characterized across an ambient temperature range of -40°C to +105°C, making the PMIC an excellent choice for various industrial applications. The device includes three synchronous step-down DC-DC converters and four linear regulators. The DC-DC converters are capable of 1x 3.5A and 2x 2A. The converters require a small 470nH inductor, 4.7µF input capacitance, and a minimum 10µF output capacitance per rail.

Two LDOs in the Texas Instruments TPS6521905 devices support output currents of 400mA at an output voltage range of 0.6V to 3.4V. These LDOs support bypass mode, acting as a load-switch, and allow voltage changes during operation. The other two LDOs support output currents of 300mA at an output voltage range of 1.2V to 3.3V. The LDOs also support load-switch mode. The I2C interface, IOs, GPIOs, and multi-function pins (MFP) allow a seamless interface to a wide range of SoCs.

Features

  • Three buck converters at up to 2.3MHz non-fixed switching frequency
    • 1x VIN: 2.5V to 5.5V; IOUT: 3.5A; VOUT 0.6V to 3.4V
    • 2x VIN: 2.5V to 5.5V; IOUT: 2A; VOUT 0.6V to 3.4V
  • Four linear regulators
    • 2x VIN: 1.5V to 5.5V; IOUT: 400mA; VOUT: 0.6V to 3.4V (configurable as load switch and bypass mode, supporting SD-Card)
    • 2x VIN: 2.2V to 5.5V; IOUT: 300mA; VOUT: 1.2V to 3.3V (configurable as load switch)
  • Dynamic voltage scaling on all three buck converters
  • Low IQ/PFM, PWM-mode (quasi-fixed frequency)
  • Programmable power sequencing and default voltages
  • I2C interface, supporting standard, fast-mode, and fast-mode+
  • Designed to support systems with up to 14+ rails (2x TPS6521905 seven rails each + GPO-controlled external rails)
  • Two GPOs, one GPIO, and three multi-function-pins
  • EEPROM programmability

Applications

  • Low-power industrial MPUs such as AM62x and AM64x
  • HMI
  • PLC
  • Industrial PC
  • Building security
  • HVAC
  • Video surveillance
  • Data concentrators
  • Smart meter
  • Protection relays
  • Patient monitoring and diagnostics
  • Imaging

Functional Block Diagram

Block Diagram - Texas Instruments TPS6521905/TPS6521905-Q1 PMIC

Texas Instruments TPS6521905/TPS6521905-Q1 PMIC