TPS60503DGSRG4

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TPS60503DGSRG4 is a highly integrated synchronous DC-DC buck converter, which integrates low ON-resistance P-FET and inrush current limiting MOSFETs, voltage regulator, clock, and loop compensation network.

The converter outputs a high side P-FET regulator which delivers up to 5A output current with a selectable output voltage of 1.0V/1.8 V/2.5V/3.3V/3.6V/4.5V/5.0V. The integrated voltage regulator allows direct more than 14V input voltage with overload and overvoltage protection. The high integration reduces the external components and simplifies the design. The dynamic voltage scaling feature can also be achieved by changing the output voltage level.

The device is suitable for various regulated and non-regulated power systems, including point of load converters, automotive systems, industrial and communication systems. It supports both high efficiency continuous current mode and burst mode operation, reduces the component count and ease the system design.

The specific components used in the TPS60503DGSRG4 are as follows:

• High side current sense P-FET regulator (switch)
• Low side N-FET regulator (switch)
• Voltage regulator with overload protection
• Clock
• Loop compensation network
• High side output voltage level selector

Application Field

The TPS60503DGSRG4 is mainly used in point-of-load (PoL) voltage converters, automotive systems, industrial systems, communication systems and similar applications. Its high efficiency, low frequency switching operation, along with its compact size, make it a perfect solution for these application fields.

Point-of-load (PoL) voltage converters are used in many various fields, such as telecommunications, computer products, test equipment, medical systems, audio/video systems and other professional and commercial equipment. The TPS60503DGSRG4 is ideal for PoL converters due to its high efficiency, fast switching speed and excellent thermal performance. It supports both continuous current mode and burst mode operation, reducing the count of components and easing the design of the system.

The TPS60503GSRG4 is also suitable for automotive applications, like vehicle powertrain, driver assistance systems and other electrified components, due to its integrated Overvoltage and Overload protection, which ensures safe operation of the system even under extreme conditions. The device is available in the 14x14-HWBGA package, which allows for space saving, making it suitable for automotive applications.

The device is also used in industrial systems, like air conditioning and LED lighting, where high efficiency and low noise are required. The device features a low switching frequency, allowing it to operate with a lower EMI, which is an important aspect in industrial systems.

Finally, the TPS60503DGSRG4 is being used in communication systems, like wireless base stations, access points and portable devices. For this, the devices features a high power output current, fast transient response and a small package size, allowing it to be used in the most demanding applications.

Working Principle

The TPS60503DGSRG4 follows the typical buck regulator converter topology, which consists of two power switches, an inductor, a capacitor, a sense resistor and an output voltage divider. The power switches are integrated on-chip, along with the voltage regulator, clock and loop compensation components.

The TPS60503DGSRG4 is driven by a constant frequency current-mode control architecture. The controller ensures current mode operation for improved load transient response and stability. The current-mode control hereby eliminates the need for loop compensation and allows for the use of a small inductor. It is designed to be compliant with latest high efficiency and noise specifications, such as EN55022.

The high side switch is a P-FET drver regulator which delivers a high output current. The low side switch is an N-FET driver which is capable of inrush current limiting. The voltage regulator is used to provide protection against overloads and to sense input voltage, leading to better system stability.

The integrated clock circuit is used to adjust the on-times of the switches as a function of the output load and voltage. The integrated loop compensation network is designed to set the maximum regulation voltage according to the load current and input voltage, while regulating the output voltage smoothly.

Finally, the output voltage level selector is used to adjust the output voltage in a range of 1.0V to 5.0V, allowing for dynamic voltage scaling.

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