TPS40090RHDR Integrated Circuits (ICs)

Frequency - Switching:	100kHz ~ 1.2MHz
Base Part Number:	TPS40090
Supplier Device Package:	28-VQFN (5x5)
Package / Case:	28-VFQFN Exposed Pad
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	Current Limit, Enable, Frequency Control, Power Good, Soft Start
Serial Interfaces:	--
Clock Sync:	Yes
Synchronous Rectifier:	No
Duty Cycle (Max):	87.5%
Series:	--
Voltage - Supply (Vcc/Vdd):	4.5 V ~ 15 V
Output Phases:	4
Number of Outputs:	4
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	PWM Signal
Part Status:	Active
Packaging:	Tape & Reel (TR)

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TPS40090RHDR Application Field and Working Principle

Introduction

TPS40090RHDR is the newest product in Texas Instruments’ PMIC- Voltage Regulators- DC DC Switching Controllers product line. This product is highly integrated, with features such as 45 W driver, wide VIN range, fast removable internal loop compensator, and active loop compensation. The low current consumption of this device makes it ideal for applications such as VBus and core power in automotive applications, and industrial and communications devices.

Application Field

The TPS40090RHDR is a highly efficient DC-DC controller with on-removeable loop compensation for a variety of applications, such as VBus and core power in automotive applications, industrial and communications systems.In automotive systems, the TPS40090RHDR used for core power and VBus. In this application, the TPS40090RHDR provides a wide VIN range, fast removable internal loop compensator, and active loop compensation to maximize system efficiency and minimize EMI/EMC performance. The combination of high efficiency, low current consumption and wide operating temperature range make the TPS40090RHDR ideal for use in automotive applications where cost and performance are a factor.The TPS40090RHDR can also be used in industrial and communications devices. This device offers a wide range of VIN and output ranges, allowing for flexibility when designing the system power management. The high-current driver and wide VIN range make this device suitable for applications such as general-purpose, step up and high current buck controllers. The device also features high efficiency and fast transient response, making it ideal for use in high-performance systems.

Working Principle

The TPS40090RHDR uses a Pulse Width Modulation (PWM) control scheme to regulate the output of the device. When the application is powered up, the TPS40090RHDR first signals the bootstrap capacitor to charge, which then enables the external PWM driver. Once the boostrap capacitor is charged, the device then monitors the output and adjusts the PWM control circuit to adjust the output voltage and current, to maintain the desired voltage and current on the output.Additionally, the TPS40090RHDR features an active loop compensation circuitry that helps improve the transient response and stability of the device. The active loop compensation uses the internal loop compensator, which is adjustable by the user to allow for more accurate control and faster response.Also, the TPS40090RHDR protects the system from over-voltage or over-current conditions with its Over-Voltage Protection (OVP) and Over-Current Protection (OCP) circuitry. The OCP circuitry detects when the output voltage or current exceeds the specified limit and shuts off the output in order to avoid any problems. The OVP circuitry, on the other hand, monitors the input voltage and shuts off the output once it exceeds the specified limit, preventing the system from over-heating or any other potential hazards.

Conclusion

The TPS40090RHDR is an ideal choice for many applications, including automotive, industrial and communications devices. Its high efficiency and low current consumption make it suitable for high-power applications, and its on-removeable loop compensation and wide operating temperature range make it ideal for many different environments. Additionally, its OVP and OCP circuitry protect the system from potential hazards, providing the user with extra security.

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