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 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 undervoltage lockout (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 through 1% ensured accuracy.
Additionally, the controller implements a novel scheme of bi-directional 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.
View datasheet View product folder