SLVUD73 April   2025

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
      1. 1.3.1 Alternate Board Configurations
    4. 1.4 Device Information
  6. 2Hardware
    1. 2.1 Power Requirements
    2. 2.2 Important Usage Notes
    3. 2.3 Connector Descriptions
  7. 3Implementation Results
    1. 3.1 Default Configuration Results
    2. 3.2 Sequence UP and DOWN Thresholds
    3. 3.3 Delay Timer
    4. 3.4 Regulation Timer
    5. 3.5 Disabled Channels
    6. 3.6 Externally Induced System RESET
  8. 4Hardware Design Files
    1. 4.1 Schematic
    2. 4.2 PCB Layout
    3. 4.3 Bill of Materials (BOM)
  9. 5Compliance Information
    1. 5.1 Compliance and Certifications
  10. 6Related Documentation

1.3.1 Alternate Board Configurations

The TPS7H3014EVM board provides footprints that can be populated with components for testing a "daisy-chain" configuration of 2 TPS7H3014-SEP sequencers. The configuration is used to increase the number of monitored SENSEx inputs and ENx outputs that can be used for sequencing.

The figure below shows an example of how this configuration can be set up. This dual-device configuration has the same specifications as the table in the previous section which described the default single-device EVM configuration. Also, the following specifications for the additional SENSEx rails and timer settings of the secondary device are provided.

TPS7H3014EVM Daisy-Chain Configuration ExampleFigure 1-2 Daisy-Chain Configuration Example
Table 1-2 Secondary Device Configuration
SpecificationValueDescription

VOUT1 VON Threshold

VON1_S

1.34V

(90 % of 1.5V)

Rising and falling voltage thresholds where the monitored VOUT rail is considered ON or OFF, respectively.

Set by:

R57 = 49.9kΩ

R59 = 40.2kΩ

VOUT1 VOFF Threshold

VOFF1_S

0.15V

(10 % of 1.5V)

VOUT2 VON Threshold

VON2_S

0.85V

(85% of 1V)

Rising and falling voltage thresholds where the monitored VOUT rail is considered ON or OFF, respectively.

Set by:

R58 = 14.5kΩ

R60 = 34.8kΩ

VOUT2 VOFF Threshold

VOFF2_S

0.50V

(50 % of 1V)

Secondary VOUT3 VON Threshold

VON3_S

1.08V

(90 % of 1.2V)

Rising and falling voltage thresholds where the monitored VOUT rail is considered ON or OFF, respectively.

Set by:

R65 = 40.2kΩ

R68 = 49.9kΩ

Secondary VOUT3 VOFF Threshold

VOFF3_S

0.12V

(10% of 1.2V)

VOUT4 VON Threshold

VON4_S

1.16V

(97 % of 1.2V)

Rising and falling voltage thresholds where the monitored VOUT rail is considered ON or OFF, respectively.

Set by:

R66 = 1kΩ

R69 = 1.07kΩ

VOUT4 VOFF Threshold

VOFF4_S

1.14

(95 % of 1.2V)

ENx Delay Time

tDLY_TMR

0.25msProgrammable time delay between when the condition for an ENx signal to transition is met and when the signal actually transitions.

Set by:

R52 = 10kΩ

J53 shunted

SENSEx Regulation Timer

tREG_TMR

0.25msProgrammable timer that sets the amount of time SENSEx is allowed to reach the regulation threshold voltage (VTH_SENSEx, typically 599mV). If VTH_SENSEx is not reached before the timer expires, the device sequences down.

Set by:

R53 = 10kΩ

J54 shunted