TPS40100RGER Integrated Circuits (ICs)

Frequency - Switching:	100kHz ~ 600kHz
Base Part Number:	TPS40100
Supplier Device Package:	24-VQFN (4x4)
Package / Case:	24-VFQFN Exposed Pad
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	Current Limit, Frequency Control, Power Good, Soft Start, Tracking
Serial Interfaces:	--
Clock Sync:	Yes
Synchronous Rectifier:	Yes
Duty Cycle (Max):	--
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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The TPS40100RGER is a current-mode modulation pulse-width-modulated (PWM) voltage regulator. It is specifically designed for regulating the output voltage to a desired value in applications such as DC to DC switching converters. Design of the TPS40100RGERThe TPS40100RGER voltage regulator is designed for use in both current-mode and voltage-mode DC to DC power converters. It features a current-mode modulation control circuit and an adjustable, high-efficiency PWM modulator. The device supports both step-down and step-up DC to DC converter topologies, and features a fast current-sense response time for improved efficiency and transient response. Additionally, the device can be programmed for wide range of voltage and current thresholds. Coupled with its wide output voltage range, low quiescent current and excellent performance, the TPS40100RGER is an ideal choice for portable consumer and computing device applications such as notebook computers, personal digital assistants (PDAs), and portable DVD players. Application of the TPS40100RGERThe TPS40100RGER is typically used in applications requiring the efficient regulation of output voltage. This includes both DC to DC step-down and step-up switching converters. These are commonly used in distributed power management systems, DC to DC regulator modules, and high current DC/DC converters for automotive, industrial and consumer applications. Designed for use in high-current DC to DC converters, the TPS40100RGER is optimized for high-efficiency, excellent transient performance, and low quiescent current. It features a high-speed current-sense response for improved efficiency, a full-bridge gate driver for improved gate rise/fall times, and a wide range of output voltages from 1.2 V to 5 V. The TPS40100RGER also features adaptive on-time control for increased efficiency, FET-control sleep mode for improved efficiency and improved EMI, programmable soft-start, and programmable voltage/current thresholds. This makes it suitable for a wide range of applications, including portable consumer and computing devices, step-down and step-up DC to DC converters, distributed power management systems, automotive, industrial and consumer DC/DC converters.Working Principle of the TPS40100RGERThe TPS40100RGER operates by sensing the feedback voltage at the output of the power converter. This feedback voltage is used to control the oscillation frequency, on-time and off-time of the PWM signal. The output voltage of the power converter is regulated to the value of the feedback signal. The device features a fast current-sense response time for improved efficiency and transient response, and can be programmed for a wide range of voltage and current thresholds.The TPS40100RGER also features adaptive on-time control to optimize the on-time period for different output voltage and load conditions. This reduces total system power consumption, improves efficiency, and reduces stress on the FETs. Additionally, the device features a FET-control sleep mode, which reduces the output voltage ripple, reduces input currents, and improves switching EMI. ConclusionThe TPS40100RGER is an ideal choice for applications requiring an efficient voltage regulator with wide range of output voltages. Its features include fast current-sense response for improved efficiency, programmable voltage and current thresholds, adaptive on-time control for improved efficiency, and a FET-control sleep mode for improved EMI. It is suitable for step-down and step-up DC to DC converters, distributed power management systems, portable consumer and computing devices, automotive, industrial and consumer DC/DC converters.

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