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reference designTPS56837

Texas Instruments TPS56837

TPS56837 4.5-V to 28-V Input, 8-A Synchronous Buck Converter

Overview

TopologyBuck Converter
Input voltage4.5-28 V
Switching frequency550-1300 kHz
Output 113 V / 8 A
IC revision1.0

Description

The TPS56837 is a high-efficiency, easy-to-use, synchronous buck converter with a wide input voltage range of 4.5 V to 28 V, and supports up to 8-A continuous output current at output voltages between 0.6 V and 13 V.The TPS56837 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 with three selectable switching frequencies: 550 kHz, 880 kHz, and 1300 kHz and selectable current limit through MODE pin configuration. The TPS56837 has adjustable soft-start time with default 1.8 ms by SS pin.The TPS56837 provides complete non-latched OV (overvoltage), UV (under voltage), OC (overcurrent), OT (overtemperature) and UVLO (under voltage lockout) protections combined with power-good indicator and output discharge function features.The TPS56837 is available in a 10-pin 3.0-mm × 3.0-mm Hot Rod QFN package, and the junction temperature is specified from –40°C to 150°C.

Features

  • 4.5-V to 28-V input voltage range
  • 0.6-V to 13-V output voltage range
  • Supports 8-A continuous output current
  • Integrated 20.4-mΩ and 9.5-mΩ MOSFETs
  • 0.6-V ±1% reference voltage at 25°C
  • 45-uA low quiescent current
  • D-CAP3™ control mode for fast transient response
  • Eco-mode (auto-skip mode) for high light-load efficiency
  • 550-kHz, 880-kHz, and 1300-kHz 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 1.8 ms
  • 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 3.0-mm × 3.0-mm HotRod™ QFN Package
  • Pin-to-pin compatible with 6-A TPS56637

Typical applications

  • Industrial PC, EPOS, factory automation and control
  • Multifunction printers, video conference system, Monitors, TV, speakers, PC and notebooks, portable electronics
  • General purposes for 12-V,19-V, 24-V power-bus supply

More information

Products

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC(mΩ)
fres(MHz)
Material
Qty.
SamplesAvailability & Sample
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744325330
SPECWE-HCI SMT Flat Wire High Current Inductor, 3.3 µH, 16.6 A
Simu­lation
Availability
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-HCI SMT Flat Wire High Current Inductor
Inductance3.3 µH
Performance Rated Current16.6 A
Saturation Current @ 10%5 A
Saturation Current @ 30%15 A
DC Resistance5.9 mΩ
Self Resonant Frequency54 MHz
MaterialSuperflux 
Packaging Unit700 
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