Overview
The TPS2411PWRG4, produced by Texas Instruments, is a full-featured N+1 and ORing power rail controller. This device is designed to manage multiple power supplies in an N+1 redundant configuration or to combine redundant input power buses. It operates in conjunction with an external N-channel MOSFET to emulate the function of a low forward-voltage diode, reducing power loss compared to traditional Schottky diodes.
The TPS2411PWRG4 features an on/off control method, distinguishing it from the TPS2410 which uses a linear turn-on control. It supports a wide supply voltage range of 3 V to 16.5 V and can control buses from 0.8 V to 16.5 V. The device includes several monitoring features such as input voltage monitoring, shorted gate monitoring, and MOSFET control-state indication.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| VDD Voltage Range | 3 | - | 16.5 | V |
| A to C Operating Voltage | 0.8 | - | 16.5 | V |
| Operating Junction Temperature | -40 | - | 125 | °C |
| Operating Free-Air Temperature | -40 | - | 85 | °C |
| VDD UVLO Threshold | 2.25 | 2.5 | - | V |
| Gate Sinking Current (Active Range) | 0.66 | 1 | - | mA |
| Fast Turn-Off Threshold Voltage | 1 | 3 | 5 | mV |
| Turn-Off Delay | - | 70 | - | ns |
Key Features
- Wide supply voltage range of 3 V to 16.5 V and bus control from 0.8 V to 16.5 V.
- On/off control method for the TPS2411, distinguishing it from the linear turn-on control of the TPS2410.
- Internal charge pump for N-channel MOSFET gate drive.
- Positive gate control on hot insertion and soft turn-on to reduce bus transients.
- Input voltage monitoring, shorted gate monitoring, and MOSFET control-state indicator.
- Programmable fast turn-off threshold and adjustable turn-off delay.
- Voltage sense inputs (A and C) for monitoring bus voltages.
- Filtering capabilities through the FLTR pin to ignore spurious transients.
- Power Good (PG) indicator and status pin for system monitoring.
- Industrial temperature range: –40°C to 85°C.
- Available in industry-standard 14-Pin TSSOP and UQFN packages.
Applications
- Rack servers (rackmount and blade servers).
- Merchant network and server power supplies.
- Battery backup units.
- Telecom systems.
- Systems requiring N+1 redundant power supplies or redundant power buses.
Q & A
- What is the primary function of the TPS2411PWRG4?
The TPS2411PWRG4 is designed to manage multiple power supplies in an N+1 redundant configuration or to combine redundant input power buses, emulating the function of a low forward-voltage diode.
- What is the operating voltage range of the TPS2411PWRG4?
The device operates with a supply voltage range of 3 V to 16.5 V and can control buses from 0.8 V to 16.5 V.
- What types of control methods are available in the TPS2411 and TPS2410?
The TPS2411 uses an on/off control method, while the TPS2410 uses a linear turn-on control method.
- What are the key monitoring features of the TPS2411PWRG4?
The device includes input voltage monitoring, shorted gate monitoring, and a MOSFET control-state indicator.
- How does the TPS2411PWRG4 handle hot insertion?
The device features positive gate control on hot insertion and soft turn-on to reduce bus transients.
- What is the purpose of the FLTR pin?
The FLTR pin allows for filtering the input to the fast comparator, enabling the device to ignore spurious transients on the A and C inputs.
- What is the significance of the PG (Power Good) indicator?
The PG indicator is an open-drain output that signals the status of the power rail, indicating whether the bus voltage is within acceptable limits.
- What are the typical applications of the TPS2411PWRG4?
The device is commonly used in rack servers, merchant network and server power supplies, battery backup units, and telecom systems.
- What are the available package options for the TPS2411PWRG4?
The device is available in industry-standard 14-Pin TSSOP and UQFN packages.
- What is the operating temperature range of the TPS2411PWRG4?
The device operates within an industrial temperature range of –40°C to 85°C.
