The new buck-boost converter for TPS55288CTypeCC/USB PD application is here!

Nowadays, multi-port chargers are becoming more and more popular with consumers, especially those with USB PD fast charging function. The power of multi-port charging is currently mainly concentrated in the range of 30W to 65W, and there are also multi-port fast charging with higher power to 100W or even 120W. While pursuing high power, manufacturers also hope to reduce the volume of their products. Texas Instruments introduced the TPS55288 buck-boost scheme to simplify the circuit and reduce the volume of the product.

Texas Instruments has recently launched a buck-boost converter TPS55288 for Type-C/USB PD applications, which leads similar products in the market with excellent power density, overall solution size, thermal performance and high cost performance.

TPS55288 input voltage range is 2.7V to 36V, 16A switching current, output power up to 100W, supports I2C interface and PPS protocol, suitable for computers, monitors, expansion docks, charging heads, wireless that support Type-C/USB PD interface Various applications such as charging boards, car chargers, mobile power supplies, and smart speakers.

Expansion dock: without fear of various charging heads, use TPS55288 to achieve high-power PD output

The new buck-boost converter for TPS55288CTypeCC/USB PD application is here!

Portable docking stations are usually not equipped with dedicated USB PD charging heads. Therefore, in order to adapt to most charging heads on the market and ensure high-power USB PD output, it is necessary to add a boost and boost chip inside the docking station. The TPS55288 buck-boost solution perfectly meets customer needs and takes into account the heat dissipation problem of small-sized products.

TPS55288 adopts a small size QFN package, only 3.5mm x 4mm, but it has excellent thermal performance. The efficiency is as high as 96% at 60W output power. The temperature rise of the chip without a fan at room temperature is only 35℃, which greatly relieves small-size products. The heat dissipation problem.

Multi-port charger: use the TPS55288 program to simplify the circuit and reduce the product volume

Nowadays, multi-port chargers are becoming more and more popular with consumers, especially those with USB PD fast charging function. The power of multi-port charging is currently mainly concentrated in the range of 30W to 65W, and there are also multi-port fast charging with higher power to 100W or even 120W. While pursuing high power, manufacturers also hope to reduce the volume of their products. Texas Instruments introduced the TPS55288 buck-boost scheme to simplify the circuit and reduce the volume of the product.

Take the 65W 1A1C charging head as an example. As shown in the figure below, the traditional solution usually uses a two-way Buck architecture, and the flyback outputs a fixed voltage as the Buck input. With the buck-boost scheme, one DC/DC circuit can be omitted, flyback outputs adjustable voltage, and directly provides voltage to Type C port; at the same time, it provides voltage to Type A port through TPS55288, which can simplify the circuit and reduce the cost of the product. volume.

In addition, TPS55288 uses a highly differentiated design, pioneering the integration of two power tubes in the boost part. Charging head manufacturers usually pay more attention to the efficiency of step-down, such as the efficiency of 20V to 5V, and TPS55288 can flexibly choose two external power tubes in the step-down part to achieve the best conversion efficiency and heat dissipation effect. At present, many manufacturers have adopted the buck-boost solution.

Traditional Buck Solution

The new buck-boost converter for TPS55288CTypeCC/USB PD application is here!

Buck-Boost solution

The new buck-boost converter for TPS55288CTypeCC/USB PD application is here!

TPS55288 more product introduction

TPS55288 supports a high switching frequency of 2.4MHz, which can further reduce the size of external inductors and capacitors and reduce the overall BOM cost. TPS55288 supports analog voltage regulation or digital I²C configuration, with high versatility and flexibility. TI provides a complete set of design solutions TPS55288EVM graphical user interface TPS55288-EVM-GUI, which can help engineers shorten the design cycle and bring products to market earlier.

The Links:   NL12876AC39-01 LM170E03-TLG6

Author: Yoyokuo