SLVS727E November   2006  – October 2019 TPS2410 , TPS2411

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Typical Application Diagram
  4. 4 Revision History
  5. 5 Device Comparison
  6. 6 Pin Configuration and Functions
    1.     Pin Functions, PW
    2.     Pin Functions, RMS
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics: TPS2410, 11
    6. 7.6 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Device Pins
        1. 8.3.1.1  A, C:
        2. 8.3.1.2  BYP:
        3. 8.3.1.3  FLTR:
        4. 8.3.1.4  FLTB:
        5. 8.3.1.5  GATE:
        6. 8.3.1.6  GND:
        7. 8.3.1.7  RSET:
        8. 8.3.1.8  RSVD:
        9. 8.3.1.9  STAT
        10. 8.3.1.10 UV, OV, PG:
        11. 8.3.1.11 VDD:
      2. 8.3.2 Gate Drive, Charge Pump and C(BYP)
      3. 8.3.3 Fast Comparator Input Filtering – C(FLTR)
      4. 8.3.4 UV, OV, and PG
      5. 8.3.5 Input ORing and Stat
    4. 8.4 Device Functional Modes
      1. 8.4.1 TPS2410 vs TPS2411 – MOSFET Control Methods
  9. 9 Application and Implementation
    1. 9.1 Typical Connections
      1. 9.1.1 N+1 Power Supply
      2. 9.1.2 Input ORing
    2. 9.2 Typical Application Examples
      1. 9.2.1 VDD, BYP, and Powering Options
      2. 9.2.2 Bidirectional Blocking and Protection of C
      3. 9.2.3 ORing Examples
      4. 9.2.4 Design Requirements
        1. 9.2.4.1 MOSFET Selection and R(RSET)
        2. 9.2.4.2 TPS2410 Regulation-loop Stability
      5. 9.2.5 Detailed Design Procedure
      6. 9.2.6 Application Curves
  10. 10Power Supply Recommendations
    1. 10.1 Recommended Operating Range
    2. 10.2 System Design and Behavior with Transients
  11. 11Layout
    1. 11.1 Layout Considerations
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Support
    2. 12.2 Related Links
    3. 12.3 Receiving Notification of Documentation Updates
    4. 12.4 Community Resources
    5. 12.5 Trademarks
    6. 12.6 Electrostatic Discharge Caution
    7. 12.7 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

10.2 System Design and Behavior with Transients

The power system, perhaps consisting of multiple supplies, interconnections, and loads, is unique for every product. A power distribution has low impedance, and low loss, which yields high Q by its nature. While the addition of lossy capacitors helps at low frequencies, their benefit at high frequencies is compromised by parasitics. Transient events with rise times in the 10-ns range may be caused by inserting or removing units, load fluctuations, switched loads, supply fluctuations, power supply ripple, and shorts. These transients cause the distribution to ring, creating a situation where ORing controllers may trip off unnecessarily. In particular, when an ORing device turns off due to a reverse current fault, there is an abrupt interruption of the current, causing a fast ringing event. Since this ringing occurs at the same point in the topology as the other ORing controllers, they are the most likely to be effected.

The ability to operate in the presence of noise and transients is in direct conflict with the goal of precise ORing with rapid response to actual faults. A fast response reduces peak stress on devices, reduces transients, and promotes un-interrupted system operation. However, a control with small thresholds and high speed is most likely to be falsely tripped by transients that are not the result of a fault. The power distribution system should be designed to control the transient voltages seen by fast-responding devices such as ORing and hotswap devices.

The TPS2410 was designed with several features to help tune its speed and sensitivity to individual systems. The FLTR pin provides a convenient place to filter the bus voltage before it causes undesired tripping (see Fast Comparator Input Filtering – C(FLTR)). Some applications may find it possible to use RSET to advantage by setting the reverse turn-off threshold more negative. Last, the STAT pin may be used to desensitize the turnoff threshold of an on-line TPS2410 when a redundant TPS2410 has turned off. This is especially attractive in dual redundant systems (see Input ORing and STAT). Ultimately, the performance may have to be tuned to fit the characteristics of each particular system.