Product details

Vin (Min) (V) 4.5 Vin (Max) (V) 60 Vout (Min) (V) 0.6 Vout (Max) (V) 57 Iout (Max) (A) 20 Iq (Typ) (uA) 4500 Switching frequency (Min) (kHz) 100 Switching frequency (Max) (kHz) 600 Features Enable, Frequency Synchronization, Power Good, Pre-Bias Start-Up, Synchronous Rectification, Tracking Operating temperature range (C) -55 to 125 Regulated outputs (#) 1 Number of phases 1 Rating HiRel Enhanced Product
Vin (Min) (V) 4.5 Vin (Max) (V) 60 Vout (Min) (V) 0.6 Vout (Max) (V) 57 Iout (Max) (A) 20 Iq (Typ) (uA) 4500 Switching frequency (Min) (kHz) 100 Switching frequency (Max) (kHz) 600 Features Enable, Frequency Synchronization, Power Good, Pre-Bias Start-Up, Synchronous Rectification, Tracking Operating temperature range (C) -55 to 125 Regulated outputs (#) 1 Number of phases 1 Rating HiRel Enhanced Product
VQFN (RGY) 20 16 mm² 4.5 x 3.5
  • Wide-Input Voltage Range from 4.5 V to 60 V
  • 600-mV Reference Voltage With 1% Accuracy
  • Programmable UVLO and Hysteresis
  • Voltage-Mode Control With Voltage Feed-Forward
  • Programmable Frequency Between 100 kHz and 600 kHz
  • Bidirectional Frequency Synchronization With Master/Slave Option
  • Low-Side FET Sensing Overcurrent Protection and High-Side FET Sensing
    Short-Circuit Protection With Integrated Thermal Compensation
  • Programmable Closed-Loop Soft-Start
  • Supports Pre-Biased Outputs
  • Thermal Shutdown at 165°C With Hysteresis
  • Voltage Tracking
  • Power Good
  • ENABLE With 1-µA Low-Current Shutdown
  • 8-V and 3.3-V LDO Output
  • Integrated Bootstrap Diode
  • 20-Pin 3.5-mm × 4.5-mm QFN (RGY) Package
  • Wide-Input Voltage Range from 4.5 V to 60 V
  • 600-mV Reference Voltage With 1% Accuracy
  • Programmable UVLO and Hysteresis
  • Voltage-Mode Control With Voltage Feed-Forward
  • Programmable Frequency Between 100 kHz and 600 kHz
  • Bidirectional Frequency Synchronization With Master/Slave Option
  • Low-Side FET Sensing Overcurrent Protection and High-Side FET Sensing
    Short-Circuit Protection With Integrated Thermal Compensation
  • Programmable Closed-Loop Soft-Start
  • Supports Pre-Biased Outputs
  • Thermal Shutdown at 165°C With Hysteresis
  • Voltage Tracking
  • Power Good
  • ENABLE With 1-µA Low-Current Shutdown
  • 8-V and 3.3-V LDO Output
  • Integrated Bootstrap Diode
  • 20-Pin 3.5-mm × 4.5-mm QFN (RGY) Package

TPS40170 is a full-featured, synchronous PWM buck controller that operates at an input voltage between 4.5 V and 60 V and is optimized for high-power-density, high-reliability dc-dc converter applications. The controller implements voltage-mode control with input-voltage feed-forward compensation that enables instant response to an input voltage change. The switching frequency is programmable from 100 kHz to 600 kHz.

The TPS40170 has a complete set of system protection and monitoring features such as programmable UVLO, programmable overcurrent protection (OCP) by sensing the low-side FET, selectable short-circuit protection (SCP) by sensing the high-side FET, and thermal shutdown. The ENABLE pin allows for system shutdown in a low-current (1-µA typical) mode. The controller supports pre-biased output, provides an open-drain PGOOD signal, and has closed-loop soft-start, output-voltage tracking, and adaptive dead-time control.

TPS40170 provides accurate output-voltage regulation within 1% accuracy. Additionally, the controller implements a novel scheme of bidirectional synchronization with one controller acting as the master and other downstream controllers acting as slaves, synchronized to the master in-phase or 180° out-of-phase. Slave controllers can be synchronized to an external clock within ±30% of the free-running switching frequency.

TPS40170 is a full-featured, synchronous PWM buck controller that operates at an input voltage between 4.5 V and 60 V and is optimized for high-power-density, high-reliability dc-dc converter applications. The controller implements voltage-mode control with input-voltage feed-forward compensation that enables instant response to an input voltage change. The switching frequency is programmable from 100 kHz to 600 kHz.

The TPS40170 has a complete set of system protection and monitoring features such as programmable UVLO, programmable overcurrent protection (OCP) by sensing the low-side FET, selectable short-circuit protection (SCP) by sensing the high-side FET, and thermal shutdown. The ENABLE pin allows for system shutdown in a low-current (1-µA typical) mode. The controller supports pre-biased output, provides an open-drain PGOOD signal, and has closed-loop soft-start, output-voltage tracking, and adaptive dead-time control.

TPS40170 provides accurate output-voltage regulation within 1% accuracy. Additionally, the controller implements a novel scheme of bidirectional synchronization with one controller acting as the master and other downstream controllers acting as slaves, synchronized to the master in-phase or 180° out-of-phase. Slave controllers can be synchronized to an external clock within ±30% of the free-running switching frequency.

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Type Title Date
* Data sheet 4.5-V to 60-V Wide-Input Synchronous PWM Buck Controller, TPS40170-EP datasheet (Rev. A) 11 Apr 2013
* VID TPS40170-EP VID V6213607 21 Jun 2016
* Radiation & reliability report TPS40170MRGYTEP Reliability Report 06 Sep 2013

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