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TPS54325-Q1

ACTIVE

Automotive 4.5V to 18V, 3A Synchronous Buck Converter with DCAP2 Mode

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Data sheet

TPS54325-Q1

ACTIVE
Data sheet Order now

Product details

Rating Automotive Operating temperature range (°C) -40 to 105 Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 4.5 Vin (max) (V) 18 Switching frequency (min) (kHz) 700 Switching frequency (max) (kHz) 700 Features Enable, Power good, Synchronous Rectification Control mode D-CAP2 Vout (min) (V) 0.76 Vout (max) (V) 5.5 Iq (typ) (µA) 850 Duty cycle (max) (%) 90
Rating Automotive Operating temperature range (°C) -40 to 105 Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 4.5 Vin (max) (V) 18 Switching frequency (min) (kHz) 700 Switching frequency (max) (kHz) 700 Features Enable, Power good, Synchronous Rectification Control mode D-CAP2 Vout (min) (V) 0.76 Vout (max) (V) 5.5 Iq (typ) (µA) 850 Duty cycle (max) (%) 90
HTSSOP (PWP) 14 32 mm² 5 x 6.4
  • Qualified for automotive applications
  • D-CAP2™ mode enables fast transient response
  • Low output ripple and allows ceramic output capacitor
  • 4.5-V to 18-V wide VCC input voltage range
  • 2.0-V to 18-V wide VIN input voltage range
  • 0.76-V to 5.5-V output voltage range
  • Highly efficient integrated FETs optimized for lower duty cycle applications –120 mΩ (high side) and 70 mΩ (low side)
  • High efficiency, less than 10 µA at shutdown
  • High initial bandgap reference accuracy
  • Adjustable soft start
  • Prebiased soft start
  • 700-kHz switching frequency (fSW)
  • Cycle-by-cycle overcurrent limit
  • Power-good output
  • Create a custom design using the TPS54325-Q1 with the WEBENCH Power Designer
  • Qualified for automotive applications
  • D-CAP2™ mode enables fast transient response
  • Low output ripple and allows ceramic output capacitor
  • 4.5-V to 18-V wide VCC input voltage range
  • 2.0-V to 18-V wide VIN input voltage range
  • 0.76-V to 5.5-V output voltage range
  • Highly efficient integrated FETs optimized for lower duty cycle applications –120 mΩ (high side) and 70 mΩ (low side)
  • High efficiency, less than 10 µA at shutdown
  • High initial bandgap reference accuracy
  • Adjustable soft start
  • Prebiased soft start
  • 700-kHz switching frequency (fSW)
  • Cycle-by-cycle overcurrent limit
  • Power-good output
  • Create a custom design using the TPS54325-Q1 with the WEBENCH Power Designer

The TPS54325-Q1 is an adaptive on-time D-CAP2 mode synchronous buck converter. The TPS54325-Q1 enables system designers to complete the suite of power bus regulators for various end equipments with a cost effective, low component count, low standby current solution. The main control loop for the TPS54325-Q1 uses the D-CAP2 mode control, which provides a very fast transient response with no external components. The TPS54325-Q1 also has a proprietary circuit that enables the device to adapt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from a 4.5-V to 18-V VCC input, and from a 2.0-V to 18-V VIN input power supply voltage. The output voltage can be programmed between 0.76 V and 5.5 V. The device also features an adjustable slow-start time and a power good function. The TPS54325-Q1 is available in the 14-pin HTSSOP package, and designed to operate from –40°C to 105°C.

The TPS54325-Q1 is an adaptive on-time D-CAP2 mode synchronous buck converter. The TPS54325-Q1 enables system designers to complete the suite of power bus regulators for various end equipments with a cost effective, low component count, low standby current solution. The main control loop for the TPS54325-Q1 uses the D-CAP2 mode control, which provides a very fast transient response with no external components. The TPS54325-Q1 also has a proprietary circuit that enables the device to adapt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from a 4.5-V to 18-V VCC input, and from a 2.0-V to 18-V VIN input power supply voltage. The output voltage can be programmed between 0.76 V and 5.5 V. The device also features an adjustable slow-start time and a power good function. The TPS54325-Q1 is available in the 14-pin HTSSOP package, and designed to operate from –40°C to 105°C.
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* Data sheet TPS54325-Q1 4.5-V to 18-V, 3-A Output Synchronous SWIFT Step-Down Switcher With Integrated FET datasheet (Rev. A) PDF | HTML 08 Jul 2022
Technical article Duty Cycle Calculation in WEBENCH® Power Designer PDF | HTML 29 May 2015

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Evaluation board

TPS54325EVM — 5V to 17V Input, 3A Converter Evaluation Module

The TPS54325EVM (evaluation module) is a fully assembled and tested circuit for evaluating the TPS54428 synchronous step-down converter. The EVM operates from a 4.5-V to 18-V input and provides a 1.05-V output up to 3-A load. The main control loop of TPS54325 uses D-CAP2™ mode control, which (...)

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