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TPS65320-Q1

NOT RECOMMENDED FOR NEW DESIGNS

Automotive 3.6V to 36V, 3.2A Buck Converter with Auto-Sourced 280mA LDO Regulator

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Data sheet
TPS65320-Q1 is not recommended for new designs
This product continues to be available for existing customers. New designs should consider an alternate product.
open-in-new Compare alternates
Drop-in replacement with upgraded functionality to the compared device
TPS65320D-Q1 ACTIVE Automotive 3.6V to 36V, 3.2A buck converter with auto-sourced 280mA LDO regulator The TPS65320D-Q1 is a replacement for the TPS65320-Q1.

TPS65320-Q1

NOT RECOMMENDED FOR NEW DESIGNS
Data sheet Order now

Product details

Vin (min) (V) 3.6 Vin (max) (V) 36 Vout (min) (V) 1.1 Vout (max) (V) 20 Iout (max) (A) 3.2 Features Eco-mode, Enable, Overcurrent protection, Power good, Thermal shutdown Iq (typ) (mA) 0.14 Rating Automotive Switching frequency (max) (kHz) 2500 Operating temperature range (°C) -40 to 125 Processor supplier Generic Processor name Generic Shutdown current (ISD) (typ) (µA) 2 Product type Microcontrollers
Vin (min) (V) 3.6 Vin (max) (V) 36 Vout (min) (V) 1.1 Vout (max) (V) 20 Iout (max) (A) 3.2 Features Eco-mode, Enable, Overcurrent protection, Power good, Thermal shutdown Iq (typ) (mA) 0.14 Rating Automotive Switching frequency (max) (kHz) 2500 Operating temperature range (°C) -40 to 125 Processor supplier Generic Processor name Generic Shutdown current (ISD) (typ) (µA) 2 Product type Microcontrollers
HTSSOP (PWP) 14 32 mm² 5 x 6.4
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • One High-VIN Step-Down Converter
    • 3.6- to 40-V Input Range
    • 250-mΩ High-Side MOSFET
      • 3.2-A Maximum Load Current, 1.1- to 20-V Output Adjustable
    • 100-kHz to 2.5-MHz Adjustable Switch-Mode Frequency
    • Less Than 140-µA Operating Quiescent Current
  • One Low-Dropout Voltage Regulator (LDO)
    • 280-mA Current Capability With 28-μA (Typical) Operating Quiescent Current in No-Load Condition
    • Input Supply Auto-Source to Balance Efficiency and Low Standby Current
    • Power-Good Output (Push-Pull)
    • Low-Dropout Voltage of 300 mV at IOUT = 200 mA (Typical)
  • Overcurrent Protection for Both Regulators
  • Overtemperature Protection
  • 14-Pin HTSSOP Package With PowerPAD Package

All trademarks are the property of their respective owners.

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • One High-VIN Step-Down Converter
    • 3.6- to 40-V Input Range
    • 250-mΩ High-Side MOSFET
      • 3.2-A Maximum Load Current, 1.1- to 20-V Output Adjustable
    • 100-kHz to 2.5-MHz Adjustable Switch-Mode Frequency
    • Less Than 140-µA Operating Quiescent Current
  • One Low-Dropout Voltage Regulator (LDO)
    • 280-mA Current Capability With 28-μA (Typical) Operating Quiescent Current in No-Load Condition
    • Input Supply Auto-Source to Balance Efficiency and Low Standby Current
    • Power-Good Output (Push-Pull)
    • Low-Dropout Voltage of 300 mV at IOUT = 200 mA (Typical)
  • Overcurrent Protection for Both Regulators
  • Overtemperature Protection
  • 14-Pin HTSSOP Package With PowerPAD Package

All trademarks are the property of their respective owners.

The TPS65320-Q1 device is a combination of a 40-V, 3.2-A, DC-DC step-down converter and a low-dropout (LDO) regulator. The DC-DC step-down converter, referred to as the buck regulator, has an integrated high-side MOSFET. The LDO regulator also has an integrated MOSFET and a low-input supply current of 28-μA (typical) in a no-load condition. Furthermore, the LDO regulator has an active-low, push-pull reset output pin. To reduce heat, the input supply of the LDO regulator can auto-source from the input voltage to the output of the buck regulator. The low-voltage tracking feature can eliminate the need to use a boost converter during cold-crank conditions.

The buck regulator has a switching frequency range from 100 kHz to 2.5 MHz that provides a flexible design to fix system requirements. The external loop compensation allows for optimization of the converter response for the appropriate operating conditions. A low-ripple pulse-skip mode reduces the no-load input supply current to less than 140 μA.

The device has built-in protection features such as soft start, current limit, thermal sensing, and shutdown because of excessive power dissipation. Furthermore, the device has an internal undervoltage-lockout (UVLO) function that turns off the device at a too-low supply voltage.

The TPS65320-Q1 device is a combination of a 40-V, 3.2-A, DC-DC step-down converter and a low-dropout (LDO) regulator. The DC-DC step-down converter, referred to as the buck regulator, has an integrated high-side MOSFET. The LDO regulator also has an integrated MOSFET and a low-input supply current of 28-μA (typical) in a no-load condition. Furthermore, the LDO regulator has an active-low, push-pull reset output pin. To reduce heat, the input supply of the LDO regulator can auto-source from the input voltage to the output of the buck regulator. The low-voltage tracking feature can eliminate the need to use a boost converter during cold-crank conditions.

The buck regulator has a switching frequency range from 100 kHz to 2.5 MHz that provides a flexible design to fix system requirements. The external loop compensation allows for optimization of the converter response for the appropriate operating conditions. A low-ripple pulse-skip mode reduces the no-load input supply current to less than 140 μA.

The device has built-in protection features such as soft start, current limit, thermal sensing, and shutdown because of excessive power dissipation. Furthermore, the device has an internal undervoltage-lockout (UVLO) function that turns off the device at a too-low supply voltage.
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* Data sheet TPS65320-Q1 40-V Step-Down Converter With Eco-mode and LDO Regulator datasheet (Rev. F) PDF | HTML 07 Mar 2016

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