The model number TPS23753APWR refers to a Power over Ethernet (PoE) Powered Device (PD) Controller produced by Texas Instruments. It is used for managing power over Ethernet systems, enabling devices like phones, IP cameras, and wireless access points to receive power and data over the same Ethernet cable.
Detailed Specifications and Pin Function Description:
Package:The TPS23753APWR comes in a QFN (Quad Flat No-lead) package with 28 pins.
Pin Function Description Table: Pin Number Pin Name Pin Function Description 1 VSS (Ground) Ground reference for the device. 2 VIN (Power Input) Input voltage for the device. Typically from PoE system. 3 VO+ (Output Voltage) Positive output voltage to power the system. 4 VO- (Output Voltage) Negative output voltage to power the system. 5 PD_A (Primary) Used to detect power on the Ethernet line. 6 PD_B (Secondary) Used to detect power on the Ethernet line. 7 PSE_D1 (Data) Data input pin, related to Ethernet communication. 8 PSE_D2 (Data) Data input pin, related to Ethernet communication. 9 GPIO0 (General Purpose IO) Configurable pin, used for various functions like signaling or control. 10 GPIO1 (General Purpose IO) Configurable pin, used for various functions like signaling or control. 11 REF (Reference Voltage) Provides a reference voltage for internal circuits. 12 VDD (Power Supply) Power supply pin to drive internal circuitry. 13 FET_GATE (Gate Control) Controls external MOSFET for power delivery. 14 STATUS (Status Output) Outputs status information, used for system diagnostics. 15 SENSE+ (Current Sense) Positive input for current sensing in the power system. 16 SENSE- (Current Sense) Negative input for current sensing in the power system. 17 D1+ (Data Line) Positive data line for Ethernet. 18 D1- (Data Line) Negative data line for Ethernet. 19 D2+ (Data Line) Positive data line for Ethernet. 20 D2- (Data Line) Negative data line for Ethernet. 21 PSE_FET (PSE Control) Controls external FETs in the system. 22 Enable (Device Enable) Enable the device for operation. 23 Fault (Fault Indicator) Indicates faults in the power delivery or system operation. 24 Thermal Shutdown (Thermal Protection) Monitors the temperature of the device and disables operation if it overheats. 25 VDD (Input Power) Provides input power to the IC. 26 Output Voltage (VOUT) Output voltage terminal, supplying power to the connected system. 27 INH (Inhibit Pin) Used to inhibit or disable the device under certain conditions. 28 SCL (I2C Clock ) Clock signal for I2C communication. Detailed FAQ for TPS23753APWR:Q: What is the primary function of the TPS23753APWR? A: The primary function of the TPS23753APWR is to act as a Power over Ethernet (PoE) Powered Device (PD) Controller, enabling devices to receive power over Ethernet cables.
Q: What is the typical input voltage range for the TPS23753APWR? A: The typical input voltage for the TPS23753APWR is 37V to 57V, which is common for PoE systems.
Q: What is the output voltage from the TPS23753APWR? A: The output voltage is typically 5V, but it can be configured for different voltages depending on the design.
Q: How does the TPS23753APWR manage power? A: The device detects power from the Ethernet cable, manages the conversion to the correct output voltage, and supplies power to the powered device while ensuring efficient energy use.
Q: Can the TPS23753APWR support Ethernet data communication? A: Yes, the TPS23753APWR supports Ethernet data communication through pins like D1+, D1-, D2+, and D2-.
Q: What happens if the input voltage goes below the minimum rated value? A: If the input voltage drops below the minimum threshold, the TPS23753APWR will no longer operate, and power delivery will be disabled.
Q: What are the thermal protection features of the TPS23753APWR? A: The device includes a thermal shutdown feature that disables the system if the temperature exceeds safe limits.
Q: Is the TPS23753APWR suitable for industrial applications? A: Yes, the TPS23753APWR is suitable for industrial, commercial, and other applications where PoE systems are used.
Q: How do I configure the TPS23753APWR for different output voltages? A: The output voltage can be configured using external components like resistors or through the internal settings, depending on the design.
Q: How do I use the GPIO pins on the TPS23753APWR? A: The GPIO pins (GPIO0, GPIO1) can be configured to perform a variety of functions such as signaling, control, or feedback in the system.
Q: What is the purpose of the STATUS pin? A: The STATUS pin provides diagnostic information about the operation of the device, indicating the health or fault status of the power system.
Q: Can the TPS23753APWR be used in high-power applications? A: Yes, the TPS23753APWR can handle high-power applications as long as the system design supports the required power levels and thermal management.
Q: What happens if the fault condition is triggered? A: If a fault is detected, the device will trigger the Fault pin and may disable operation depending on the fault condition.
Q: Does the TPS23753APWR include current sensing capabilities? A: Yes, the device includes current sensing pins (SENSE+ and SENSE-) to monitor the current being delivered to the powered device.
Q: Can the TPS23753APWR be used for outdoor applications? A: The TPS23753APWR can be used in outdoor applications, but it must be protected from extreme environmental conditions like moisture and excessive heat.
Q: What kind of package does the TPS23753APWR come in? A: The TPS23753APWR is available in a 28-pin QFN (Quad Flat No-lead) package.
Q: How does the thermal shutdown feature work? A: The thermal shutdown feature protects the device from overheating by disabling operation when the temperature exceeds a predefined threshold.
Q: Can I use the TPS23753APWR in PoE+ applications? A: Yes, the TPS23753APWR is designed to handle power over Ethernet systems, including PoE+ (IEEE 802.3at).
Q: How does the device manage power to multiple devices? A: The TPS23753APWR can manage power distribution by utilizing its power control pins and output voltage settings to supply power to multiple devices in a network.
Q: Is there any software required to configure the TPS23753APWR? A: Basic configuration is hardware-based through resistors and external components. However, advanced configurations can be set via I2C communication.
This detailed overview of the TPS23753APWR provides comprehensive information about its pins, functionality, and common queries related to its usage.