SNVSC83C September   2022  – October 2025 TPSM365R3 , TPSM365R6

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison Table
  6. 5 Pin Configuration and Functions
  7. 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  System Characteristics
    7. 6.7  Typical Characteristics
    8. 6.8  Typical Characteristics: VIN = 12 V
    9. 6.9  Typical Characteristics: VIN = 24 V
    10. 6.10 Typical Characteristics: VIN = 48 V
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Input Voltage Range
      2. 7.3.2  Output Voltage Selection
      3. 7.3.3  Input Capacitors
      4. 7.3.4  Output Capacitors
      5. 7.3.5  Enable, Start-Up, and Shutdown
      6. 7.3.6  External CLK SYNC (with MODE/SYNC)
        1. 7.3.6.1 Pulse-Dependent MODE/SYNC Pin Control
      7. 7.3.7  Switching Frequency (RT)
      8. 7.3.8  Power-Good Output Operation
      9. 7.3.9  Internal LDO, VCC UVLO, and BIAS Input
      10. 7.3.10 Bootstrap Voltage and VBOOT-UVLO (BOOT Terminal)
      11. 7.3.11 Spread Spectrum
      12. 7.3.12 Soft Start and Recovery from Dropout
        1. 7.3.12.1 Recovery from Dropout
      13. 7.3.13 Overcurrent Protection (OCP)
      14. 7.3.14 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Shutdown Mode
      2. 7.4.2 Standby Mode
      3. 7.4.3 Active Mode
        1. 7.4.3.1 CCM Mode
        2. 7.4.3.2 AUTO Mode - Light Load Operation
          1. 7.4.3.2.1 Diode Emulation
          2. 7.4.3.2.2 Frequency Reduction
        3. 7.4.3.3 FPWM Mode - Light Load Operation
        4. 7.4.3.4 Minimum On-time (High Input Voltage) Operation
      4. 7.4.4 Dropout
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 600-mA and 300-mA Synchronous Buck Regulator for Industrial Applications
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1  Custom Design With WEBENCH® Tools
          2. 8.2.1.2.2  Output Voltage Setpoint
          3. 8.2.1.2.3  Switching Frequency Selection
          4. 8.2.1.2.4  Input Capacitor Selection
          5. 8.2.1.2.5  Output Capacitor Selection
          6. 8.2.1.2.6  VCC
          7. 8.2.1.2.7  CFF Selection
          8. 8.2.1.2.8  Power-Good Signal
          9. 8.2.1.2.9  Maximum Ambient Temperature
          10. 8.2.1.2.10 Other Connections
        3. 8.2.1.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
        1. 8.4.1.1 Ground and Thermal Considerations
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Third-Party Products Disclaimer
      2. 9.1.2 Device Nomenclature
      3. 9.1.3 Development Support
        1. 9.1.3.1 Custom Design With WEBENCH® Tools
    2. 9.2 Documentation Support
      1. 9.2.1 Related Documentation
    3. 9.3 Receiving Notification of Documentation Updates
    4. 9.4 Support Resources
    5. 9.5 Trademarks
    6. 9.6 Electrostatic Discharge Caution
    7. 9.7 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

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

3 Description

The TPSM365R6 or TPSM365R3 is a 600mA or 300mA, 65V input synchronous step-down DC/DC power module that combines power MOSFETs, integrated inductor and boot capacitor in a compact and easy-to-use 3.5mm × 4.5mm × 2mm, 11-pin QFN package. The small HotRod™ QFN package technology enhances the thermal performance and low EMI. The device features the ultra-low operating IQ of 4μA at no load (24V to 3.3V VOUT). The TPSM365Rx is available in two fixed output voltage option supporting 3.3V and 5V, and an adjustable output voltage option supporting 1V to 13V range. The module only requires four external components for a 3.3V and 5V fixed output design The TPSM365Rx is optimized for excellent EMI performance and space constraint applications.

Device Information
PART NUMBER(3) PACKAGE(1) PACKAGE SIZE(2)
TPSM365R6 RDN (QFN-FCMOD,11) 4.50mm × 3.50mm
TPSM365R3
(1) For more information, see Section 11.
(2) The package size (length × width) is a nominal value and includes pins, where applicable.
TPSM365R3 TPSM365R6 Typical SchematicTypical Schematic
TPSM365R3 TPSM365R6 Efficiency vs Output Current VOUT = 5V, FSW = 1MHzEfficiency vs Output Current VOUT = 5V, FSW = 1MHz

The TPSM365Rx uses a peak current mode control scheme with internal compensation to maintain stable operation with minimal output capacitance. The precision EN feature allows precise control of the device during start-up and shutdown. An open-drain PGOOD output provides a true indication of the output voltage status. The TPSM365Rx includes prebias start up, overcurrent, and temperature protections, making the TPSM365Rx an excellent device for powering a wide range of industrial applications. In the fixed option variants, the MODE/SYNC pin enables seamless transition from FPWM to PFM with a no-load standby quiescent current of less than
4μA, making sure of high efficiency and excellent transient response for the entire load-current range.