SLVSHS7 October   2024 TPSI31P1-Q1

ADVANCE INFORMATION  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1  Absolute Maximum Ratings
    2. 5.2  ESD Ratings
    3. 5.3  Recommended Operating Conditions
    4. 5.4  Thermal Information
    5. 5.5  Power Ratings
    6. 5.6  Insulation Specifications
    7. 5.7  Safety-Related Certifications
    8. 5.8  Safety Limiting Values
    9. 5.9  Electrical Characteristics
    10. 5.10 Switching Characteristics
    11. 5.11 Insulation Characteristic Curves
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Transmission of the Enable State
      2. 6.3.2 Power Transmission
      3. 6.3.3 Gate Driver
      4. 6.3.4 Chip Enable (CE)
      5. 6.3.5 Comparators
      6. 6.3.6 VDDP, VDDH, and VDDM Under-voltage Lockout (UVLO)
      7. 6.3.7 Keep-off Circuitry
      8. 6.3.8 Thermal Shutdown
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 CDIV1, CDIV2 Capacitance
      3. 7.2.3 Application Curves
      4. 7.2.4 Insulation Lifetime
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support
      1. 8.1.1 Related Documentation
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information
    1. 10.1 Tape and Reel Information

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6.4 Device Functional Modes

Table 6-1 summarizes the functional modes for the TPSI31P1-Q1.

Table 6-1 TPSI31P1-Q1 Functional Modes(1)
CE VDDP VDDH, VDDM EN VDRV PGOOD COMMENTS
X Powered Down(3) Powered Down(5) X L L Powered Down:
VDRV output disabled, keep off circuitry applied.
L Powered Up(2) Powered Down(5) X L L Disabled Operation:
When CE is asserted low, power transfer to the secondary ceases. VDDH and VDDM rails discharge pending loading. VDRV output disabled, keep off circuitry applied.
H Powered Up(2) Powered Up(4) L L H VDRV asserted low. PGOOD indicates secondary supply status. Power transfer occurs to the VDDH and VDDM rails.
H Powered Up(2) Powered Up(4) H L or H H Pre-charge Operation: VDRV output state controlled by comparator outputs, R_CMP and S_CMP. PGOOD indicates secondary supply status.
(1) X: do-not-care.
(2) VVDDP ≥ VDDP_UVLO threshold.
(3) VVDDP < VDDP_UVLO threshold.
(4) VVDDH ≥ VDDH_UVLO threshold and VVDDM ≥ VDDM_UVLO threshold.
(5) VVDDH <VDDH_UVLO threshold or VVDDM < VDDM_UVLO threshold.
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