TPS61007DGS

Voltage - Output (Min/Fixed):	1.5V
Base Part Number:	TPS61007
Supplier Device Package:	10-VSSOP
Package / Case:	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	500kHz
Current - Output:	1.3A (Switch)
Voltage - Output (Max):	3.3V
Series:	--
Voltage - Input (Max):	3.3V
Voltage - Input (Min):	0.8V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Boost
Output Configuration:	Positive
Function:	Step-Up
Part Status:	Active
Packaging:	Tube

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Overview of TPS61007DGS DC-DC Switching Regulator

The TPS61007DGS is a high-performance step-down DC-DC switching regulator marketed by Texas Instruments. This device features current-mode, constant on-time control which provides an all-ceramic solution that doesn\'t need external compensation components and uses an external synchronous rectifier. This type of controller has superior flexibility and is easier to use over other designs based on traditional control techniques such as pulse-width modulation and hysteretic control.

Applications

The TPS61007DGS is intended for applications where efficient, step-down DC-DC conversion is required. Typical applications include distributed power architectures and point-of-load DC-DC conversion for portable equipment such as notebook PCs and DSPs. Other typical uses include: handheld devices, low-powered embedded systems, and post-regulation for AC-DC power supplies.

Important Features

The TPS61007DGS is designed to provide a very high level of integration and to minimize external components. Key features that make this device a superior design choice for DC-DC switching regulators include:* Small size and high efficiency * Constant On-time control * Dual integrated output MOSFETs * No external compensation components * Maximum switching frequency of 4MHz * 4.5V to 28V input voltage range * 0.9V to 5.3V output voltage range

Functional Diagram

The following diagram illustrates the TPS61007DGS\'s integrated circuitry. Of particular note is the PWM/PFM switch which enables current-mode control and allows the device to achieve high efficiency at both light and heavy load levels.

Working Principle

The TPS61007DGS utilizes current-mode, constant on-time control, which eliminates the need for external compensation components. In addition, the use of an external synchronous rectifier provides the device with an overall improvement in efficiency. The switching frequency of the power conversion section of the circuit is automatically adjusted for optimal performance based on the load and output voltage.At light loads (below 10%), the device enters PFM mode, where the on-time of the power-conversion section is adjusted to a constant value, resulting in lower power dissipation and improved light-load efficiency. At heavy loads (above 10%), the device enters PWM mode, which can provide a better load transient response.

Conclusion

The TPS61007DGS DC-DC switching regulator from Texas Instruments is an ideal choice for power architecture applications requiring high integration and minimal external components. The device\'s advanced current-mode control and constant on-time enable reduced power dissipation, improved overall efficiency, and better load transient performance when compared to traditional PWM and hysteretic control techniques.

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