SLUSDW9A June   2020  – June 2020 TPS51215A

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Typical Application
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Switch Mode Power Supply Control
      2. 7.3.2  VREF, V0, V1, V2, V3 and Output Voltage
      3. 7.3.3  Soft-Start and Power Good
      4. 7.3.4  SLEW and VID Function
      5. 7.3.5  MODE Pin Configuration
      6. 7.3.6  Light-Load Operation
      7. 7.3.7  Out-of-Bound Operation
      8. 7.3.8  Current Sensing and Overcurrent Protection
      9. 7.3.9  Overvoltage and Undervoltage Protection
      10. 7.3.10 V5IN Undervoltage Lockout Protection
      11. 7.3.11 Thermal Shutdown
    4. 7.4 D-CAP2 Control Mode
  8. 8 Application and Implementation
    1. 8.1 Application Information
  9. 9 Typical Applications
    1. 9.1 Design Requirements
    2. 9.2 Detailed Design Procedure
      1. 9.2.1 Step One: Determine the Specifications
      2. 9.2.2 Step Two: Determine System Parameters
      3. 9.2.3 Step Three: Determine Inductor Value and Choose Inductor
      4. 9.2.4 Step Four: Set the Output Voltages
      5. 9.2.5 Step Five: Calculate SLEW Capacitance
      6. 9.2.6 Step Six
      7. 9.2.7 Step Seven: Determine the Output Capacitance
      8. 9.2.8 Step Eight: Select Decoupling and Peripheral Components
    3. 9.3 Application Examples
      1. 9.3.1 Design 1: 2-Bit VID ICC(max) = 30 A, DCAP2 600-kHz Application for VCCIN_AUX in Intel TigerLake platform
      2. 9.3.2 Design 2: 2-Bit VID, ICC(max) = 10 A, for VCCIO_1_2 in Intel RocketLake - S platform
    4. 9.4 Application Curves of Design 1
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Community Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information
    1. 13.1 Package Option Addendum
      1. 13.1.1 Packaging Information
      2. 13.1.2 Tape and Reel Information

Package Options

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

5 Pin Configuration and Functions

RUK Package
20-Pin WQFN
Top View
TPS51215A ruk20_pinout_lusao8.gif

Pin Functions

PIN I/O DESCRIPTION
NAME NO.
BST 11 I Supply input for high-side MOSFET driver (bootstrap terminal). Connect a capacitor from this pin to the SW pin. Internally connected to V5IN via the bootstrap MOSFET switch.
DRVH 13 O High-side MOSFET gate driver output.
DRVL 14 O Synchronous low-side MOSFET gate driver output.
EN 10 I Enable input for the device. Support 3.3-V logic
GND 17 I Combined AGND and PGND point. The positive on-resistance current sensing input.
GSNS 1 I Voltage sense return tied directly to GND sense point of the load. Tie to GND with a 10-Ω resistor to close feedback if remote sensing is used. Short to GND if remote sense is not used.
MODE 16 I connect to V5IN
PGOOD 7 O PGOOD output. Connect pull-up resistor.
SLEW 19 I Program the startup using 4.5 µA and voltage transition time using 45 µA from an external capacitor via current source.
SW 12 I/O High-side MOSFET gate driver return. The RDS(on) current sensing input (–).
TRIP 18 I Connect resistor to GND to set OCL at VTRIP/8. Output 10 µA current at room temperature, TC = 4700ppm/°C.
V0 5 I Voltage need to be set to 0V, corresponding to 00
V1 4 I Voltage set-point programming resistor input, corresponding to 01
V2 3 I Voltage set-point programming resistor input, corresponding to 10
V3 2 I Voltage set-point programming resistor input, corresponding to 11
V5IN 15 I 5-V power supply input for internal circuits and MOSFET gate drivers
VID0 8 I Logic input for set-point voltage selector. Use in conjunction with VID1 pin to select among four set-point reference voltages. Support 1-V and 3.3-V logic.
VID1 9 I Logic input for set-point voltage selector. Use in conjunction with VID0 pin to select among four set-point reference voltages. Support 1-V and 3.3-V logic.
VREF 6 O 2 V, 300-µA voltage reference. Bypass to GND with a 1-µF ceramic capacitor.
VSNS 20 I Voltage sense return tied directly to the load voltage sense point. Tie to VOUT with a 10-Ω resistor to close feedback if remote sensing is used.
Thermal Pad — — Connect directly to system GND plane with multiple vias.