SLUAAV6 September   2024 TPS56837 , TPS56837H

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
    1. 1.1 USB Type-C Power Delivery Introduction
    2. 1.2 TPS56837HA Introduction
    3. 1.3 Block Diagram of TPS56837HA in USB Type-C Power Delivery Application
  5. 2PD Controller GPIO to Configure TPS56837HA Dynamically Output Change
    1. 2.1 Typical Application
    2. 2.2 Test Results
      1. 2.2.1 Dynamically Change Waveforms
      2. 2.2.2 Efficiency Curves
      3. 2.2.3 Thermal Pictures
  6. 3PD Controller Dedicated FB Pin to Control TPS56837HA Dynamic Output Change
    1. 3.1 FB Current Injection PD Controller
    2. 3.2 Rfb Integrated PD Controller
  7. 4Summary
  8. 5References

1.2 TPS56837HA Introduction

The TPS56837HA is a high-efficiency, easy-to-use, synchronous buck converter with a wide input voltage range of 4.5V to 28V. The device supports up to 8A continuous output current at output voltages between 4V and 22V, and supports 5V, 9V, 15V, 20V dynamically output change with available current 3A and 5A for USB Type-C PD application.

The TPS56837HA operates at Eco-mode to attain high efficiency at light load with fixed 500kHz switching frequency.

The TPS56837HA has three selectable current limits through MODE pin configuration, as shown in Table 1-1. TPS56837HA is designed to fulfill peak current 200% overload capabilities for available current 3A as well as 5A. Details can check fixed power source peak current capability table in PD specification.

Table 1-1 TPS56837HA Current Limits
CURRENT LIMIT
ILS_OCL Low-side MOSFET valley current limit ILIM-1 option 6 7.2 8.5 A
ILIM option 8 9.6 11.1
ILIM+1 option 10 12 13.8

The TPS56837HA has adjustable soft-start time by the SS pin capacitor configuration. The TPS56837HA provides complete non-latched OV (overvoltage), UV (undervoltage), OC (overcurrent), OT (overtemperature), and UVLO (undervoltage lockout) protections combined with power-good indicator.

The TPS56837HA is available in a 10-pin, 3.0mm × 3.0mm, HotRod QFN package, and the junction temperature is specified from –40°C to 150°C.