SLUSBP5E March   2014  – July 2018 TPS92601-Q1 , TPS92602-Q1

UNLESS OTHERWISE NOTED, this document contains PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1. 3.1 Typical Schematic
  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 Fixed-Frequency PWM Control
      2. 7.3.2 Slope-Compensation Output Current
      3. 7.3.3 Boost-Current Limit
      4. 7.3.4 Oscillator and PLL
      5. 7.3.5 Control Loop Compensation
      6. 7.3.6 LED Open-Circuit Detection
      7. 7.3.7 Output Short-Circuit and Overcurrent Detection
      8. 7.3.8 Measuring LED Current During a Non-Failure Condition
      9. 7.3.9 LED Dimming Options
        1. 7.3.9.1 Analog Dimming
        2. 7.3.9.2 PWM Dimming
    4. 7.4 Device Functional Modes
      1. 7.4.1 Undervoltage and Overvoltage Shutdown
      2. 7.4.2 Overtemperature Shutdown
      3. 7.4.3 Device State Diagram
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Boost Regulator With Separate or Paralleled Channels
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1  Switching Frequency
          2. 8.2.1.2.2  Maximum Output-Current Set Point
          3. 8.2.1.2.3  Output Overvoltage-Protection Set Point
          4. 8.2.1.2.4  Duty Cycle Estimation
          5. 8.2.1.2.5  Inductor Selection
          6. 8.2.1.2.6  Rectifier Diode Selection
          7. 8.2.1.2.7  Output Capacitor Selection
          8. 8.2.1.2.8  Input Capacitor Selection
          9. 8.2.1.2.9  Current Sense and Current Limit
          10. 8.2.1.2.10 Switching MOSFET Selection
          11. 8.2.1.2.11 Loop Compensation
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Boost-to-Battery Regulator
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
          1. 8.2.2.2.1  Switching Frequency
          2. 8.2.2.2.2  Maximum Output-Current Set Point
          3. 8.2.2.2.3  Output Overvoltage-Protection Set Point
          4. 8.2.2.2.4  Duty Cycle Estimation
          5. 8.2.2.2.5  Inductor Selection
          6. 8.2.2.2.6  Rectifier Diode Selection
          7. 8.2.2.2.7  Output Capacitor Selection
          8. 8.2.2.2.8  Input Capacitor Selection
          9. 8.2.2.2.9  Current Sense and Current Limit
          10. 8.2.2.2.10 Switching MOSFET Selection
          11. 8.2.2.2.11 Loop Compensation
        3. 8.2.2.3 TPS92602y-Q1 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Related Links
    2. 11.2 Trademarks
    3. 11.3 Electrostatic Discharge Caution
    4. 11.4 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

5 Pin Configuration and Functions

TPS92602x-Q1 PWP PowerPAD™ Package
28-Pin HTSSOP With Exposed Thermal Pad
Top View
NC – No internal connection
TPS92601x-Q1 PWP PowerPAD Package
20-Pin HTSSOP Package With Exposed Thermal Pad
Top View
NC – No internal connection

Pin Functions

PIN I/O DESCRIPTION
NAME TPS92601-Q1
TPS92601A-Q1
TPS92601B-Q1
20 PINS		 TPS92602-Q1
TPS92602A-Q1
TPS92602B-Q1
28 PINS
COMP1 2 2 O Compensation network (channel 1)
COMP2 — 12 O Compensation network (channel 2)
DIAG1 5 5 O Diagnostic pin (open, short, LED current) (channel 1)
DIAG2 — 13 O Diagnostic pin (open, short, LED current) (channel 2)
GDRV1 14 22 O Gate driver NMOS-FET (channel 1)
GDRV2 — 20 O Gate driver NMOS-FET (channel 2)
GND 6 6 — Ground
ICTRL1 1 1 I LED current-control pin, analog dimming (channel 1)
ICTRL2 — 11 I LED current control pin, analog dimming (channel 2)
ISN1 18 26 I Current-sense input – negative (channel 1)
ISN2 — 16 I Current-sense input – negative (channel 2)
ISNS1 15 23 I Overcurrent sense input (channel 1)
ISNS2 — 19 I Overcurrent sense input (channel 2)
ISP1 17 25 I Current-sense input – positive (channel 1)
ISP2 — 17 I Current-sense input – positive (channel 2)
NC 9 — — No internal connection
10
11
12
OVFB1 3 3 I Voltage-feedback input (channel 1)
OVFB2 — 10 I Voltage feedback input (channel 2)
PGND1 16 24 — Power ground (channel 1)
PGND2 — 18 — Power ground (channel 2)
PWMIN1 7 7 I PWM input and channel enable or disable function (channel 1)
PWMIN2 — 9 I PWM input and channel enable or disable function (channel 2)
PWMO1 20 28 O PWM PMOS-FET driver output (channel 1)
PWMO2 — 14 O PWM PMOS-FET driver output (channel 2)
RT 4 4 I Oscillator pin and pin for external sync. frequency
VCC 13 21 O Gate-drive supply voltage (external decoupling capacitor)
VIN 8 8 I Supply voltage
VOUT1 19 27 I Connect to boost output voltage (channel 1)
VOUT2 — 15 I Connect to boost output voltage (channel 2)
Thermal pad — Solder to achieve appropriate power dissipation. Connect to PGND.