TPS40428RHAR Integrated Circuits (ICs) |
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Allicdata Part #: | 296-40764-2-ND |
Manufacturer Part#: |
TPS40428RHAR |
Price: | $ 0.00 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | Texas Instruments |
Short Description: | IC REG CTRLR BUCK PMBUS 40VQFN |
More Detail: | Buck Regulator Positive Output Step-Down PMBus DC-... |
DataSheet: | TPS40428RHAR Datasheet/PDF |
Quantity: | 1000 |
Voltage - Supply (Vcc/Vdd): | 4.5 V ~ 20 V |
Supplier Device Package: | 40-VQFN (6x6) |
Package / Case: | 40-VFQFN Exposed Pad |
Operating Temperature: | -40°C ~ 125°C (TJ) |
Control Features: | Frequency Control, Phase Control, Power Good |
Serial Interfaces: | PMBus |
Clock Sync: | Yes |
Synchronous Rectifier: | No |
Duty Cycle (Max): | -- |
Frequency - Switching: | 200kHz ~ 1.5MHz |
Series: | -- |
Output Phases: | 2 |
Number of Outputs: | 2 |
Topology: | Buck |
Output Configuration: | Positive |
Function: | Step-Down |
Output Type: | PWM Signal |
Part Status: | Active |
Packaging: | Tape & Reel (TR) |
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TPS40428RHAR is a highly integrated 4.5V to 36V, 8-A synchronous step-down DC/DC converter optimized for high-conversion-efficiency, low output noise and minimal external component count. This device is suitable for use in automotive systems, telecommunications, personal computers and personal digital assistant (PDA) applications.
The TPS40428RHAR is an ideal solution for automotive gate driver applications. It integrates a full-featured clock and reference generator for gate voltage programming, as well as a high-output-current gate driver capable of driving MOSFETs with low gate capacitance. In addition, the TPS40428RHAR provides protective diagnosis functions, such as current limiting and thermal protection.
Application Field
As mentioned above, the TPS40428RHAR is a controller suitable for use in automotive systems, telecommunications, personal computers and PDA applications. Its high efficiency and its small size allow it to contribute to an improved system performance. The device also offers a wide range of features, such as adaptive voltage scaling, current-mode converters, soft-start and voltage tracking.
The TPS40428RHAR can boost an automotive system\'s performance by providing precise control over its power management system. Automotive applications such as EV/ HEV/PHEV, voltage on-line-regulation systems and hot standby systems can take advantage of the TPS40428RHAR\'s capabilities.
Working Principle
The TPS40428RHAR is designed for synchronous buck converters and is based on a current-mode topology. In this topology, the device operates with a PWM signal generated by an on-chip oscillator with an adjustable frequency. The device has a two-loop control system that monitors the output voltage for regulation and uses the current flowing through the inductor for input voltage regulation.
The first loop is the voltage loop and its function is to maintain a constant output voltage. The voltage loop uses Voltage-Mode PWM and a voltage-feedback amplifier. The second loop is the current loop, which uses Current-Mode PWM and an on-chip current-sense amplifier. The current loop monitors the current flowing through the inductor and regulates the input voltage.
The TPS40428RHAR also includes adjustable voltage scaling, which can be used to reduce switching losses. The voltage scaling feature allows the output voltage to be varied according to the operating conditions. This feature allows the device to find a better balance between efficiency, system performance and power dissipation.
In addition, the device also offers a wide range of protection features, such as over-voltage protection, undervoltage lockout, over-current protection, short-circuit protection and thermal protection. These protection features protect the device and the system from potential damage caused by sudden voltage or current surges.
The TPS40428RHAR is a highly integrated, 8-A synchronous step-down DC/DC converter that is optimized for high conversion efficiency, low output noise and minimal external component count. It is designed for use in automotive systems, telecommunications, personal computers and PDA applications and provides adjustable voltage scaling, current-mode converters, soft-start and voltage tracking. The device also offers a wide range of protection features to protect the device and the system from potential damage.
The specific data is subject to PDF, and the above content is for reference
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