TPS65217CRSLR IC

Technical Specifications of TPS65217CRSLR

Datasheet	TPS65217CRSLR datasheet
Category	Integrated Circuits (ICs)
Family	PMIC – Power Management – Specialized
Manufacturer	Texas Instruments
Series	–
Packaging	Tape & Reel (TR)
Part Status	Active
Applications	Battery Management, Display (LED Drivers), Handheld/Mobile Devices, Power Supply
Current – Supply	–
Voltage – Supply	2.75 V ~ 5.8 V
Operating Temperature	-40°C ~ 105°C
Mounting Type	Surface Mount
Package / Case	48-VFQFN Exposed Pad
Supplier Device Package	48-VQFN (6×6)

TPS65217CRSLR Description

To supply energy to the AM335x ARM® Cortex® –A8 processor in mobile and 5-V line-powered systems, the TPS65217x was developed as a single-chip power management IC (PMIC). The PMIC has a dual-input power route, a linear battery charger for single-cell Li-ion and Li-polymer batteries, 3 step-down converters, 4 low-dropout (LDO) regulators, and a high-efficiency boost converter to power two strings of up to 10 LEDs each.

You can power the system with a USB cable, a 5-volt wall adapter, or a Li-Ion battery. The device’s temperature characteristics are determined between -40 degrees Celsius and +105 degrees Celsius, making it ideal for use in manufacturing environments. High-efficiency to reduce the voltage of the system’s central processor by 2.25 MHz, a step-down converter of this frequency can be utilized. memory voltage, and I/O voltage generation. The TPS65217x chip is offered in a 0.4 mm pitch, leadless, 48-pin (6 mm) VQFN package.

TPS65217CRSLR Features

Charger and Power Path

• Power Route Output Current of 2 A.
• The maximum charge current for a linear charger is 700 mA.
• USB and AC Inputs with 20-V Tolerance.
• Temperature control and safety timers.
• The sensation of temperature input.

Step-Down Converter

• three integrated switching FET step-down converters.
• Fixed Frequency Operation at 2.25 MHz.
• power-saving mode at low current load.
• PWM Mode Output Voltage Accuracy 2%.
• Duty Cycle at 100% for the Lowest Dropout.
• average 15-A quiescent current per converter.
• When disabled, passive discharge to the ground.

LDO Regulators (LDO1, LDO2)

• Two LDOs that are movable.
• LDO2 can be set up to follow DCDC3.
• Typical Quiescent Current of 15 A.

TPS65217CRSLR Detailed Description

A linear battery charger, a white LED driver, and a power path are all included in the TPS65217x device. It also features three step-down converters and two low-dropout (LDO) regulators. A USB cable, a 5-volt wall adapter, or a Li-ion battery can power the system. The device is characterized from -40 degrees Celsius to +105 degrees Celsius, making it usable in various industrial settings with a 5-volt power supply rail. It has a power-good output, push-button monitor, hardware-reset function, and temperature sensor to keep the battery safe. Its power-up and power-down sequences can be customized. The TPS65217x device’s I 2C interface is loaded with useful features. All rails, load switches, and LDO regulators can be enabled or disabled.

Overcurrent and temperature limits and power-on and power-off sequences are all programmable via the I 2C interface. Additionally, the I 2C interface keeps tabs on the battery’s charging status and allows for regulation of the LED’s brightness. Currents of up to 1.2 A can be provided by each of the three DC/DC step-down converters. When the clock frequency of a processor changes, the output voltage of each converter can be dynamically adjusted via the I2C interface. Voltage undershoots and overshoots can be mitigated with the help of the dynamic voltage positioning featured on all three converters.

These converters typically operate at a fixed frequency of 2.25 MHz, using pulse-width modulation (PWM), and can handle loads ranging from moderate to heavy. The converters switch to power-saving mode and pulse-frequency modulation (PFM) operation at low load currents for the best efficiency throughout the broadest range of load currents. To keep noise levels down, the I 2C interface can be used to force each converter into fixed-frequency PWM mode. Because of the step-down converters, tiny components like inductors and capacitors can be used to create a compact final product.

LDO1 and LDO2 are the hardware’s standard low-dropout (LDO) regulators. Although the LDO1 and LDO2 regulators can each handle up to 100 mA during normal operation, this maximum is reduced to 1 mA during the SLEEP state to reduce quiescent current while still providing support for the system’s standby mode. Also, the TPS65217A model includes two load switches, LS1 and LS2. These two outputs are LDO3 and LDO4 regulators, which are used in all other TPS65217x variations. 200 mA (TPS65217B) or 400 mA (TPS65217C) can be supplied by the LDO3 and LDO4 regulators, respectively (TPS65217C and TPS65217D). Thanks to their flexible input voltage range, each of the four LDO regulators can take power from the system voltage node or one of the DC/DC converters. It has two power-good logic signals.

Primary power-good signal (PGOOD) checks DCDC1, DCDC2, and DCDC3 converters, as well as LS1 (or LDO3) and LS2 (or LDO4) power outputs. The ACTIVE state has a high level of this signal, while the SLEEP, RESET, and OFF states have lower levels. LDO1 and LDO2 are both being monitored by the secondary power-good signal LDO PGOOD, which is high in the ACTIVE and SLEEP states and low in the RESET and OFF states. When an error is detected on any monitored rails, such as an output short or overcurrent condition, all the rails are disabled, or the PGOOD and LDO PGOOD signals are taken low.

A very efficient boost converter with dual current sinks allows it to power two strings of up to 10 LEDs at 25 mA each or a single string of 20 LEDs at 50 mA. Controlling the brightness and the dimming is possible thanks to an internal PWM signal and I 2C. The present sources are jointly regulated and cannot be used separately. The linear battery charger for single-cell Li-ion and Li-Polymer batteries, which is part of the triple system power path, can supply power to the system and the batteries simultaneously without interfering with each other.

The AC input is preferred over the USB port to charge the battery and run the system. To reduce the number of charge and discharge cycles experienced by the battery, the system prefers using the two aforementioned power sources.

TPS65217CRSLR Feature Description

● Wake-Up and Power-Up Sequencing

In most cases, the default power-on and power-off sequences for the TPS65217x device can be used without modification. Yet, I 2C control allows users to construct their own sequences. Strobes and delay times determine the startup procedure. When multiple output rails are activated at once, the strobes determine the sequence in which they are activated. The interval between each strobe can be set anywhere from 1 ms to 10 ms.

NOTE: Although the user can adjust the power-up and power-down sequence using the SEQx registers, those registers are reset to default values when the device switches to the SLEEP, OFF, or RESET state. If this is the case, then every time a device is powered on, a new power-down sequence must be written from scratch, whereas the power-up sequence is always guaranteed to be the same. In the ACTIVE state (PWR EN pin pulled high), custom power-up and power-down sequences can be tested and confirmed by toggling the SEQUP and SEQDWN bits over I 2C. Altering the timing of the initial power-on sequence permanently requires special programming at the TI facility.

Conclusion

In conclusion, the TPS65217CRSLR power management IC from Texas Instruments is an excellent choice for easy power control. Its false pin count and input voltage range of 1.8 to 5.8 V make it a versatile component suitable for various applications. The switching regulator frequency of 2550 kHz, tape and reel packaging, and operating temperature range of -40 °C to 105 °C make it a reliable and safe choice for your power system needs. ICRFQ is a trusted supplier that provides outstanding customer service and top-quality products. Upgrade your power system today with the TPS65217CRSLR from ICRFQ and experience the best in reliable and high-quality components.

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