Single/dual lithium battery boost power supply, application difference between FP5207 and FP5217 speakers

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Single/dual lithium battery boost power supply, application difference between FP5207 and FP5217 speakers [Copy link]

Bluetooth speakers are mainly powered by lithium batteries, and generally use audio amplifier chips with built-in boost. Audio amplifier boost IC is an integrated circuit used in audio systems that can boost low voltage to a voltage suitable for the amplifier chip to work. The speaker is mainly composed of batteries, amplifiers, Bluetooth, and shell structures. However, the speaker discharge requires a built-in boost chip FP5207 or 5217 to boost the battery to power the amplifier . More power and better sound quality has always been the eternal pursuit of the speaker market.

Audio product architecture diagram

Speaker power system diagram

• Here is some information about audio amplifier boost IC

1. Function: Increase the power supply voltage to the voltage required by the power amplifier chip to provide sufficient power output.
2. Power supply type: Select the appropriate boost IC according to the power supply type of the audio system (such as lithium battery, lead-acid battery, etc.).
3. Output voltage and current: Ensure that the output voltage and current can meet the requirements of the power amplifier chip.
4. Efficiency: Choose a high-efficiency, low-power, and stable boost IC to reduce energy loss.
5. Package and pin compatibility: Consider the package style and pin compatibility of the boost IC to facilitate integration with other chips and boards.

• The difference between FP5207 and FP5217

• FP5207, 2.8-24V power supply asynchronous external MOS boost constant voltage, maximum output VIN*5/300W, input current limit adjustable; in application, it can achieve 30W~300w power output of audio .

FP5207 is a boost topology switching regulator for wide operating voltage applications. It provides built-in gate drive pins for driving external N-MOSFETs. The non-inverting input of the error amplifier is connected to a 1.2V precision reference voltage. It has a programmable switching frequency set by an external resistor, and a programmable inductor peak current limit connects a resistor from CS to GND. Current mode control and external compensation network make system stability simple and flexible.

The FP5207 is available in a small footprint SOP-8L (EP) package to accommodate space-saving PCB layout in application areas.

• FP5217, 2.8-24V power supply, asynchronous built-in MOS boost constant voltage, maximum output 6-24V/60W, adjustable input current limit, can be used to achieve 15W~50W power output of the speaker, which is slightly lower than FP5207 .

FP5217 is a boost topology switching regulator for wide operating voltage applications. Its built-in 15mΩ power MOSFET makes the regulator highly power efficient. The non-inverting input of the error amplifier is connected to a 1.2V precision reference voltage. It has a programmable switching frequency set by an external resistor, and a programmable inductor peak current limit connects the resistor from CS to GND. Current mode control and external compensation network make system stability simple and flexible.

The FP5217 is available in a small footprint TSSOP-14L (EP) package to fit into space-saving PCB layout for application areas.

Summarize:

Speakers powered by a single lithium battery are still the largest product category in the current speaker market. Power, efficiency, auditory experience, PCB peripheral costs, etc. are the main indicators required by electronic engineers when designing and selecting audio amplifier ICs. Based on the trend of increasing output power of portable Bluetooth speakers, built-in boosting of amplifier ICs is a must. FP5207 and FP5217 are suitable for products with high-quality audio output requirements such as portable audio players, wireless headphones, smart speakers, and car audio systems to improve battery-powered efficiency and output power.