The TPS40170-Q1device is a full-featured, synchronous PWM buck controller that operates at an input voltage between 4.5 V and 60V 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-Q1 device 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.
The TPS40170-Q1 device 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.
Feature
- Qualified for Automotive Applications
- AEC-Q100 Qualified With the Following Results
- Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
- Device HBM ESD Classification Level 1C
- Device CDM ESD Classification Level C4B
- 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 and 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 4.5-mm × 3.5-mm VQFN (RGY) Package
The TPS40170-Q1device is a full-featured, synchronous PWM buck controller that operates at an input voltage between 4.5 V and 60V 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-Q1 device 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.
The TPS40170-Q1 device 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.
