TPS76850QPWPG4

Current - Output:	1A
Base Part Number:	TPS76850
Supplier Device Package:	20-HTSSOP
Package / Case:	20-PowerTSSOP (0.173", 4.40mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Reverse Polarity
Control Features:	Enable, Power Good
PSRR:	60dB (1kHz)
Current - Quiescent (Iq):	125µA
Series:	--
Voltage Dropout (Max):	0.38V @ 1A
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	5V
Voltage - Input (Max):	10V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tube

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TPS76850QPWPG4 Voltage Regulators: Application Field and Working Principle

Voltage regulators are essential components for numerous electronic systems, specifically Linear Voltage Regulators (LVRs). LVRs are particularly important for portable computing, automotive, industry control and consumer applications, where it is needed to protect device from excessive power or current. In this article, we will focus on the application field and working principle of the TPS76850QPWPG4, which is a Linear Voltage Regulator (LVR) produced by Texas Instruments (TI).

Application Field

The TPS76850QPWPG4 stands out as it is a wide range 4.5V to 21V input voltage Dual Output LVR from the PowerWise family of LO-DRO regulators launched by TI. It provides a total regulated output current up to 5.5A, and it is perfect for automotive systems and battery powered circuits, where a regulated voltage or temperature is required. This power stage is especially useful when one of the loadings entail a high instantaneous transient-current output. As an excellent switching regulator for battery management systems and high-power portable applications, this LVR integrates two high-side LO-DRO switches and two low-side NPN switches.In addition to the design optimization achieved by using the PowerWise structures, with its nominal 431kHz switching frequency, it is possible to reduce the component count in the power chain. This simplifies the design, lowering the solution size and cost. It also allows for faster transient response and excellent system performance. These features make it ideal for high power output applications like server and base station power.

Working Principle

The TPS76850QPWPG4 combines the functionality of two separated DC/DC converters, one Integrated High-side LO-DRO (controlled FET) switch type and one Step Down or Buck Mode LVR regulator. The LO-DRO converter is used for high voltage conversion and voltage level shifting applications, while the LVR converter reduces the voltage to the desired voltage output from the 4.5V to 21V input voltage range. The integrated control circuitry of the TPS76850QPWPG4 ensures protection from abnormal operation and damage by overload, short-circuit and thermal overload. Its adjustable Soft-start and output load transient response improve system reliability and stability. Its typical 10µA operating current, coupled with excellent accuracy, makes it suitable for battery powered systems. This power stage also features a programmable POR Threshold, allowing customers to customize the POR threshold to their system\'s input supply voltage range.

Conclusion

In conclusion, the TPS76850QPWPG4 is a Dual Output LVR from TI’s PowerWise family of LO-DRO regulators, suitable for numerous systems and applications, varying from consumer to automotive. It provides excellent design optimization, fast transient response and overall system performance. Its low power consumption, adjustable Soft-start and output load transient response make it an ideal solution for battery powered systems. Furthermore, it ensures protection from abnormal operation, overload and thermal overload.

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