TPS40192DRCT Integrated Circuits (ICs)

Frequency - Switching:	600kHz
Base Part Number:	TPS40192
Supplier Device Package:	10-VSON (3x3)
Package / Case:	10-VFDFN Exposed Pad
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	Enable, Power Good
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	Yes
Duty Cycle (Max):	85%
Series:	--
Voltage - Supply (Vcc/Vdd):	4.5 V ~ 18 V
Output Phases:	1
Number of Outputs:	1
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

TPS40192DRCT is a DC/DC switching controller integrated circuit specifically designed as a low-cost power supply solution. It is part of a family of low-cost, high-efficiency, mono and multi-channel DC/DC converters. The integrated circuit is a highly integrated, differentiated buck-based switching control circuit with built-in high/low side drivers and an integrated, configurable analog and digital timer/event management circuit. It also features an internally-programmed gain control for constant-voltage regulation and additional features such as ‘force-on’, ‘sleep’, soft-start and frequency synchronization.

Application Field

The TPS40192DRCT is well-suited for applications such as DC/DC power supplies, and serves as a supervisor and power converter in the power distribution systems. The device is a low-cost, high-efficiency, compact and reliable switching conversion solution. It can be used in a wide range of applications, including battery-powered systems, isolated and non-isolated DC/DC converters as well as power adapters, such as laptop and mobile power, USB power, tablet and electronic product charging. It is ideal for industrial, automotive and consumer markets.

Working Principle

The TPS40192DRCT operates from a 2.1V to 16V DC input voltage with an adjustable output voltage range from 0.8V to 10V. The standard operating frequency for the device is 300kHz, but is adjustable up to 500kHz, depending on the requirements of the system. Internally, the TPS40192DRCT includes high-side and low-side gate drivers, a low-side MOSFET switch with current sensing resistor, an over current protection circuit, a voltage monitoring circuit, a soft-start circuit, as well as a digital timer and event management circuit.The device is designed with an innovative high/low side driver architecture that allows the device to smoothly transition between PWM and burst mode operations. During normal switch operation the low-side device cycles between on and off depending on the PWM duty cycle. The high-side device remains on when the current being drawn is less than the peak current limit value. When the current reach the peak current limit value, the device alternatively switches the low side device on/off, allowing current to flow through the inductor. During this time, the device is in burst mode, allowing low output voltage ripple. This burst mode operation helps to minimize power losses, minimize EMI noise, and increase efficiency of the circuit.

Conclusion

The TPS40192DRCT is a versatile, low-cost, low-power DC/DC switching controller integrated circuit. It is designed to provide superior current and voltage regulation performance, high efficiency, and advanced protection features. It is suitable for a wide range of applications, including battery-powered systems, DC/DC converters and power adapters. The device integrates high/low side drivers, a low-side MOSFET switch with current sensing resistor, and digital timer/event management to enable excellent performance and power management. The TPS40192DRCT is the perfect solution for controlling and regulating voltage and current in DC/DC power supply designs, and is well-suited for applications such as industrial, automotive and consumer markets. Overall, it can provide an integrated, reliable, and cost-effective solution for any DC/DC power supply design.

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