The TPS650250RHBR is a part of the Texas Instruments (TI) family of integrated circuits (ICs), specifically a Power management IC designed for portable applications. It’s often used in battery-powered devices, managing power efficiently between various components like processors, memory, and other peripherals. Below is a detailed explanation of its features, pin functions, and answers to frequently asked questions.
1. Package Type:
The TPS650250RHBR comes in a QFN-32 package. This is a 32-pin (quad flat no-lead) package, and the device uses this form factor to efficiently manage power distribution while being compact.
2. Pin Function List (32 Pins):
Pin Number Pin Name Function Description 1 VIN1 Input voltage for the primary power supply (3.0V to 5.5V). 2 VIN2 Secondary input voltage (for auxiliary power supply). 3 GND Ground. Connect to system ground. 4 PGOOD1 Power good indicator for rail 1 (logic high when rail 1 is stable). 5 PGOOD2 Power good indicator for rail 2 (logic high when rail 2 is stable). 6 VSTBY Standby voltage output (typically 1.8V or 3.3V depending on setup). 7 VDDIO1 Output for I/O voltage for core devices (3.3V, 1.8V). 8 VDDIO2 Output for I/O voltage for auxiliary devices (3.3V, 1.8V). 9 VDD33 Main output voltage (3.3V). 10 VDD12 Output voltage for low-power devices (typically 1.2V). 11 VOUT1 Main output voltage for power rail 1 (typically 5V). 12 VOUT2 Main output voltage for power rail 2 (typically 1.8V). 13 VOUT3 Main output voltage for power rail 3 (typically 3.3V). 14 VOUT4 Auxiliary output voltage (typically 2.5V). 15 EN1 Enable control for rail 1 (logic high enables). 16 EN2 Enable control for rail 2 (logic high enables). 17 EN3 Enable control for rail 3 (logic high enables). 18 EN4 Enable control for rail 4 (logic high enables). 19 VIN3 Optional input voltage (if needed for a third power input). 20 NC No connection. Reserved for internal use. 21 VDD2 Secondary power input for auxiliary devices. 22 FB1 Feedback pin for regulation of output rail 1. 23 FB2 Feedback pin for regulation of output rail 2. 24 FB3 Feedback pin for regulation of output rail 3. 25 FB4 Feedback pin for regulation of output rail 4. 26 IMON Current monitor input for voltage regulation. 27 SS1 Soft-start capacitor pin for rail 1 to limit inrush current. 28 SS2 Soft-start capacitor pin for rail 2 to limit inrush current. 29 SS3 Soft-start capacitor pin for rail 3 to limit inrush current. 30 SS4 Soft-start capacitor pin for rail 4 to limit inrush current. 31 SENSE1 Voltage sensing input for rail 1 to ensure proper regulation. 32 SENSE2 Voltage sensing input for rail 2 to ensure proper regulation.3. FAQ (Frequently Asked Questions)
What is the recommended operating input voltage for the TPS650250RHBR? The recommended input voltage for the TPS650250RHBR is between 3.0V to 5.5V, which allows for compatibility with a wide range of power sources. How many output voltage rails does the TPS650250RHBR provide? The TPS650250RHBR provides 4 output voltage rails for different components in the system, with values typically being 1.2V, 1.8V, 3.3V, and 5V. Can I use the TPS650250RHBR for devices with lower voltage needs? Yes, the TPS650250RHBR supports multiple output voltages, including 1.2V, which is suitable for low-power devices. What is the function of the PGOOD pins on this IC? The PGOOD pins (Pin 4 and Pin 5) indicate the power status of the rails. A logic high signal means the output voltage is stable and within the specified range. How do I enable each of the power rails in the TPS650250RHBR? Each power rail can be enabled by applying a logic high to the corresponding EN pin (Pin 15 to Pin 18). What is the function of the FB pins? The FB pins (Pin 22 to Pin 25) are used for feedback regulation to control the output voltage of each rail and ensure it stays within the desired range. Is there a feature for controlling inrush current on startup? Yes, each power rail has a Soft-Start pin (Pin 27 to Pin 30) to limit inrush current during startup, preventing damage to the circuit and ensuring smooth operation. What is the purpose of the IMON pin? The IMON pin (Pin 26) allows for monitoring the current flow through the device, which can help with power management and system diagnostics. What package does the TPS650250RHBR come in? The TPS650250RHBR comes in a QFN-32 package, which is compact and suitable for applications with space constraints.Can I use the TPS650250RHBR in battery-powered applications?
Yes, the device is designed for portable, battery-powered devices, managing power distribution efficiently to extend battery life.Does the TPS650250RHBR support thermal protection?
Yes, the TPS650250RHBR includes thermal protection to prevent overheating and damage to the IC.What type of applications is the TPS650250RHBR best suited for?
It is ideal for battery-powered devices, portable electronics, and systems with multiple voltage requirements, such as smartphones, tablets, and portable computers.Can the TPS650250RHBR handle multiple inputs?
Yes, it supports multiple input voltage sources (Vin1, Vin2, and Vin3), which can be used depending on the configuration of the system.How do I use the voltage sensing feature?
The SENSE pins (Pin 31 and Pin 32) are used to sense the output voltages, ensuring proper regulation and enabling feedback control for voltage accuracy.What is the typical output voltage for rail 1?
Rail 1 typically outputs 3.3V, which is used for powering core components of the system.Can I adjust the output voltage?
Yes, the output voltage can be adjusted using external feedback components connected to the FB pins.How do I monitor the power status?
You can monitor the power status through the PGOOD pins, which indicate whether each output rail is functioning correctly.Does the TPS650250RHBR include overcurrent protection?
Yes, the device includes overcurrent protection, which helps protect the system from excessive current that could cause damage.How does the device ensure stable output voltages?
Stable output voltages are ensured through feedback regulation using the FB and SENSE pins, ensuring that each voltage rail stays within specified limits.What is the function of the standby voltage (VSTBY)?
The VSTBY pin provides a standby voltage output, typically used for low-power or always-on devices, such as a microcontroller in sleep mode.This provides a comprehensive overview of the TPS650250RHBR, its pin functions, and usage in various applications. The detailed table and FAQ address common inquiries and highlight key features, ensuring a full understanding of the device.