Overview
The TPS2412DRG4, produced by Texas Instruments, is a power rail controller designed for N+1 and ORing power supply applications. This device, in conjunction with an external N-channel MOSFET, emulates the function of a low forward-voltage diode, providing a unidirectional power combining function. It is particularly useful in redundant power supply systems where multiple power sources need to be combined efficiently. The TPS2412DRG4 offers adjustable turnoff thresholds and voltage monitoring, making it versatile for various power management scenarios.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 0.8 V to 16.5 V |
| Quiescent Current (Iq) | 1.2 mA |
| Gate Current (Igate) | 292 μA |
| Package Type | TSSOP (8-pin), SOIC (8-pin) |
| Package Size | TSSOP: 4.40 mm × 3.00 mm, SOIC: 3.91 mm × 4.90 mm |
| Turnoff Threshold | Programmable via RSET resistor |
| Voltage Sensing Accuracy | Accurate voltage sensing with fast comparator filtering |
| Enable Control | Available |
| MOSFET Fault Monitoring | Available |
| Status Pin | Available |
Key Features
- Emulates a low forward-voltage diode using an external N-channel MOSFET
- Programmable turnoff threshold via RSET resistor
- Accurate voltage sensing with fast comparator filtering
- Voltage monitoring and enable control
- MOSFET fault monitoring and status pin
- Linear gate control and ON/OFF gate control
- Internal charge pump for gate drive and comparator bias
Applications
The TPS2412DRG4 is designed for use in N+1 power supply applications and input-power bus ORing in redundant source applications. It is suitable for systems requiring efficient power combining, such as data centers, telecommunications equipment, and other high-reliability power systems. The device can also be used in general-purpose power management scenarios where low forward voltage drop and adjustable operation are necessary.
Q & A
- What is the primary function of the TPS2412DRG4? The TPS2412DRG4 emulates a low forward-voltage diode using an external N-channel MOSFET for N+1 and ORing power supply applications.
- What is the input voltage range of the TPS2412DRG4? The input voltage range is from 0.8 V to 16.5 V.
- How is the turnoff threshold programmed? The turnoff threshold is programmable via the RSET resistor.
- What types of packages are available for the TPS2412DRG4? The device is available in TSSOP (8-pin) and SOIC (8-pin) packages.
- Does the TPS2412DRG4 have voltage monitoring and enable control features? Yes, it includes voltage monitoring and enable control features.
- What is the purpose of the internal charge pump in the TPS2412DRG4? The internal charge pump provides bias power to the comparators and voltage to drive the GATE.
- Can the TPS2412DRG4 be used in general-purpose power management scenarios? Yes, it can be used in various power management scenarios where low forward voltage drop and adjustable operation are necessary.
- How does the device handle MOSFET fault monitoring? The TPS2412DRG4 includes MOSFET fault monitoring to ensure reliable operation.
- What is the significance of the status pin in the TPS2412DRG4? The status pin provides an indication of the device's operational state.
- Can the TPS2412DRG4 be used in high-reliability power systems? Yes, it is suitable for use in high-reliability power systems such as data centers and telecommunications equipment.
