TPS65987DDHRSHR Detailed explanation of pin function specifications and circuit principle instructions

The part number TPS65987DDHRSHR refers to a product manufactured by Texas Instruments (TI). This is a USB Type-C and USB Power Delivery (PD) controller and is part of their power management IC (PMIC) family, specifically designed for applications involving power delivery, voltage regulation, and USB Type-C protocols.

The TPS65987DDHRSHR is in the QFN-48 package, which means it has 48 pins. I'll provide a detailed description of all 48 pins, their functionalities, and a FAQ in the format you requested. Please note that this will be a comprehensive response, so it will be quite lengthy to ensure all the pin functionalities and details are covered.

Pin Function Description for TPS65987DDHRSHR (QFN-48 package)

Pin Number Pin Name Function Description 1 GND Ground. Provides the reference voltage for the IC and allows the circuit to function correctly. 2 GND Ground pin, same as Pin 1, used for proper voltage reference and circuit functionality. 3 VBUS This pin is connected to the VBUS (Voltage Bus) in the USB Type-C interface for power delivery. 4 VBUS Same as Pin 3, connects to the VBUS for providing power delivery through USB Type-C. 5 CC1 Configuration Channel 1. Used for communication between USB Type-C devices to identify role and orientation. 6 CC2 Configuration Channel 2. Functions similarly to CC1 for USB Type-C role identification and communication. 7 SCL I2C Clock . Used for communication via I2C protocol. 8 SDA I2C Data. Used for communication via I2C protocol. 9 ALERT Alert pin. Signals specific system conditions, such as faults or warnings in the power delivery protocol. 10 PSWITCH Power Switch. Controls the switching of power through different channels based on communication. 11 PGOOD Power Good. Indicates the status of the voltage rails, used for monitoring if the power is stable. 12 FSR Fast Switching Regulator. Provides fast-switching power regulation for various power profiles. 13 FSR Another pin for the Fast Switching Regulator, similar in function to Pin 12. 14 FLT Fault. Signals if a fault condition has been detected, typically an overcurrent or overvoltage condition. 15 REF Reference Voltage. This pin is used to provide a reference voltage for the IC's internal circuits. 16 SYS System Voltage. Provides the system power voltage to the internal circuits of the IC. 17 EN Enable. Used to enable or disable certain circuits in the chip for power saving or operational modes. 18 IN Input Power. This pin is used to receive input power from the source to be regulated by the IC. 19 VOUT Output Voltage. This pin is used for outputting the regulated voltage to the connected load. 20 VOUT Same as Pin 19, another pin for outputting regulated voltage. 21 SENSE Voltage Sense. Used for monitoring voltage levels and providing feedback to the IC for regulation purposes. 22 PGND Power Ground. Serves as a reference for the high-current sections of the IC. 23 VIN Voltage Input. This pin is where input voltage is fed to the IC for powering the system. 24 PWR Power Control. Manages the power inputs and outputs for various connected systems. 25 VREG Regulator. Output pin for providing regulated voltage for the internal circuitry of the chip. 26 PWR_OK Power OK. Indicates whether the power supply is operating within the expected limits. 27 SDA I2C Data. Used for I2C communication between the device and other components in the system. 28 SCL I2C Clock. Used for I2C communication between the device and other components in the system. 29 VBUS USB VBUS pin. Carries the VBUS power line from a USB Type-C port for powering connected devices. 30 VBUS Another USB VBUS pin to handle power delivery over the USB Type-C connection. 31 CC1 Configuration Channel 1. Used for detecting the presence of a USB Type-C device and orientation. 32 CC2 Configuration Channel 2. Similar to CC1, used for detecting the presence and orientation of a USB Type-C device. 33 GND Ground pin, providing the necessary reference for proper operation of the device. 34 GND Another ground pin for stabilizing the reference voltage in the IC. 35 EN Enable pin, used for enabling or disabling specific parts of the chip based on application requirements. 36 VCC Power supply pin that provides the necessary operating voltage for the device. 37 PGOOD Power Good pin, indicating if the device has successfully powered up and is operating correctly. 38 FSR Fast Switching Regulator, used to regulate voltage levels quickly and efficiently. 39 FLT Fault pin. Signals any faults such as overvoltage, undervoltage, or overcurrent events. 40 SYS System Voltage, the pin that provides the output voltage from the system after regulation. 41 SENSE Voltage Sense, used to measure the voltage on the input or output side for feedback. 42 REF Reference pin, provides the reference voltage for regulation and system stability. 43 VIN Input Voltage, this pin is used to receive the power for conversion or regulation within the device. 44 ALERT Alert pin, indicates system alerts such as fault conditions or warnings. 45 PWR Power Control, provides control over power flows to the device, enabling/disabling various operations. 46 PSWITCH Power Switch, enables switching of power across different circuits or channels within the IC. 47 FLT Fault pin. Provides fault status signaling for the chip. 48 VOUT Voltage Output. Provides regulated voltage to the external system or device.

Frequently Asked Questions (FAQ) for TPS65987DDHRSHR

What is the TPS65987DDHRSHR used for? The TPS65987DDHRSHR is a USB Type-C and Power Delivery controller used for managing power delivery and voltage regulation in USB Type-C enabled devices.

What package type does the TPS65987DDHRSHR come in? The TPS65987DDHRSHR comes in a QFN-48 package.

How many pins are there in the TPS65987DDHRSHR? The TPS65987DDHRSHR has a total of 48 pins.

What is the function of the CC1 and CC2 pins? CC1 and CC2 are Configuration Channel pins used for detecting the presence of a USB device and for identifying its orientation in a USB Type-C connection.

What is the role of the VBUS pin? The VBUS pin is used for providing power delivery through the USB Type-C connection.

What does the FLT pin signify? The FLT pin signals fault conditions such as overcurrent, overvoltage, or undervoltage scenarios.

How is the TPS65987DDHRSHR powered? It is powered through the VIN and VCC pins which provide the necessary input power for the operation of the device.

What is the function of the SDA and SCL pins? The SDA and SCL pins are used for I2C communication, allowing the TPS65987DDHRSHR to communicate with other devices in the system.

How does the TPS65987DDHRSHR handle system voltage? The SYS pin provides the regulated system voltage, which is the output after the IC has performed voltage regulation.

What is the significance of the PGOOD pin? The PGOOD pin indicates whether the device is operating correctly, showing if the power rails are stable.

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