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TPS56838

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4.5V to 28V input, 8A synchronous buck converter with FCCM operation

Product details

Vin (min) (V) 4.5 Vin (max) (V) 28 Vout (min) (V) 0.6 Vout (max) (V) 13 Iout (max) (A) 8 Iq (typ) (mA) 0.045 Switching frequency (min) (kHz) 500 Switching frequency (max) (kHz) 1200 Features Continuous Control Mode, Enable, Forced PWM, Over Current Protection, Soft Start Adjustable, Synchronous Rectification Operating temperature range (°C) -40 to 150 Rating Catalog Regulated outputs (#) 1 Control mode D-CAP3 Duty cycle (max) (%) 98 Type Converter
Vin (min) (V) 4.5 Vin (max) (V) 28 Vout (min) (V) 0.6 Vout (max) (V) 13 Iout (max) (A) 8 Iq (typ) (mA) 0.045 Switching frequency (min) (kHz) 500 Switching frequency (max) (kHz) 1200 Features Continuous Control Mode, Enable, Forced PWM, Over Current Protection, Soft Start Adjustable, Synchronous Rectification Operating temperature range (°C) -40 to 150 Rating Catalog Regulated outputs (#) 1 Control mode D-CAP3 Duty cycle (max) (%) 98 Type Converter
VQFN-HR (RPA) 10 9 mm² 3 x 3
  • 4.5V to 28V input voltage range
  • 0.6V to 13V output voltage range
  • Supports 8A continuous output current
  • Integrated 20.4mΩ and 9.5mΩ MOSFETs
  • 0.6V ±1% reference voltage at 25°C
  • 45uA low quiescent current of TPS56837
  • D-CAP3™ control mode for fast transient response
  • TPS56837 with Eco-mode (auto-skip mode) for high light-load efficiency
  • TPS56838 with forced continuous conduction mode (FCCM)
  • TPS56836 with Out-of-Audio™ (OOA) mode
  • 500kHz, 800kHz, and 1200kHz selectable switching frequencies by mode selection
  • Adjustable cycle-by-cycle over current limit for low-side MOSFETs by mode selection
  • Adjustable soft-start time with default 1.8ms
  • Built-in output discharge function
  • Power-good indicator to monitor output voltage
  • Supports up to 98% duty operation
  • Non-latched protections for UV, OV, OT, and UVLO
  • –40°C to +150°C operating junction temperature
  • Small 10-pin 3.0mm × 3.0mm HotRod™ QFN Package
  • Create a customer design using the TPS5683x with the WEBENCH Power Designer

  • Pin-to-pin compatible with 6A TPS56637 and 8A TPS56837H
  • 4.5V to 28V input voltage range
  • 0.6V to 13V output voltage range
  • Supports 8A continuous output current
  • Integrated 20.4mΩ and 9.5mΩ MOSFETs
  • 0.6V ±1% reference voltage at 25°C
  • 45uA low quiescent current of TPS56837
  • D-CAP3™ control mode for fast transient response
  • TPS56837 with Eco-mode (auto-skip mode) for high light-load efficiency
  • TPS56838 with forced continuous conduction mode (FCCM)
  • TPS56836 with Out-of-Audio™ (OOA) mode
  • 500kHz, 800kHz, and 1200kHz selectable switching frequencies by mode selection
  • Adjustable cycle-by-cycle over current limit for low-side MOSFETs by mode selection
  • Adjustable soft-start time with default 1.8ms
  • Built-in output discharge function
  • Power-good indicator to monitor output voltage
  • Supports up to 98% duty operation
  • Non-latched protections for UV, OV, OT, and UVLO
  • –40°C to +150°C operating junction temperature
  • Small 10-pin 3.0mm × 3.0mm HotRod™ QFN Package
  • Create a customer design using the TPS5683x with the WEBENCH Power Designer

  • Pin-to-pin compatible with 6A TPS56637 and 8A TPS56837H

The TPS5683x 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 0.6V and 13V.

The TPS5683x uses D-CAP3 control mode to provide fast transient response, good line and load regulation, no requirement for external compensation, and supports low equivalent series resistance (ESR) output capacitors like MLCC.

The TPS56837 operates at Eco-mode to attain high efficiency at light load. The TPS56838 operates in forced continuous conduction mode which maintains lower output ripple during all load conditions. The TPS56836 operates in Out-of-Audio mode to avoid audible noise.

The TPS5683x has three selectable switching frequencies, 500kHz, 800kHz, and 1200kHz, and selectable current limit through MODE pin configuration. The TPS5683x has adjustable soft-start time by connecting the SS capacitor and with default 1.8ms with the SS pin floating.

The TPS5683x provides complete non-latched OV (overvoltage), UV (undervoltage), OC (overcurrent), OT (overtemperature) and UVLO (undervoltage lockout) protections combined with power-good indicator and output discharge function features.

The TPS5683x 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.

The TPS5683x 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 0.6V and 13V.

The TPS5683x uses D-CAP3 control mode to provide fast transient response, good line and load regulation, no requirement for external compensation, and supports low equivalent series resistance (ESR) output capacitors like MLCC.

The TPS56837 operates at Eco-mode to attain high efficiency at light load. The TPS56838 operates in forced continuous conduction mode which maintains lower output ripple during all load conditions. The TPS56836 operates in Out-of-Audio mode to avoid audible noise.

The TPS5683x has three selectable switching frequencies, 500kHz, 800kHz, and 1200kHz, and selectable current limit through MODE pin configuration. The TPS5683x has adjustable soft-start time by connecting the SS capacitor and with default 1.8ms with the SS pin floating.

The TPS5683x provides complete non-latched OV (overvoltage), UV (undervoltage), OC (overcurrent), OT (overtemperature) and UVLO (undervoltage lockout) protections combined with power-good indicator and output discharge function features.

The TPS5683x 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.

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* Data sheet TPS5683x 4.5V to 28V Input, 8A Synchronous Buck Converter datasheet (Rev. B) PDF | HTML 17 Jan 2024

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Evaluation board

TPS56837HEVM — TPS56837H evaluation module

The TPS56837H is a high-efficiency easy-to-use synchronous buck converter with a wide input voltage range of 4.5V to 28V that supports up to 8A continuous output current at output voltages between 4V and 22V for USB Power Delivery (USB PD) applications. The TPS56837H operates at Eco-mode to attain (...)
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