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TPS54560BDDAR

5A 60V buck converter, 146uA IQ, 2.2MHz, HSOIC-8

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Manufacturer Part：

TPS54560BDDAR

Package：

HSOIC-8 PowerPAD (4.89 x 3.90 x 1.47 mm, exposed pad)

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Description

Product Overview

The TPS54560BDDAR from Texas Instruments is a 5A, 4.5V-60V step-down DC-DC converter with 146mA switch current limit and 2.2MHz switching frequency in HSOIC-8 package.

Key Specifications

Topology Non-synchronous Buck (external diode)
Input Voltage 4.5 V to 60 V
Output Voltage 0.8 V to 57 V (adjustable)
Output Current 5 A maximum
Feedback Voltage 0.8 V typical
Switch Current Limit 6.5 A minimum (B version)
Switching Frequency 100 kHz to 2.2 MHz (adjustable)
Quiescent Current (Active) 146 uA typical
Shutdown Current 1.5 uA typical
HS FET RDS(ON) 87 mOhm typical (high-side only)
Control Mode Peak current-mode with external compensation
Protection OCP, thermal shutdown, UVLO, OVP
Package HSOIC-8 (DDA suffix, PowerPAD)
Operating Temperature -40 to +150 C (TJ)

Features

  • 60V maximum input voltage for automotive and industrial
  • 2.2MHz switching frequency for small external components
  • Low 146uA quiescent current for battery-powered applications
  • External compensation for design flexibility
  • Spread-spectrum option for EMI reduction (B version)

Applications

  • Automotive 12V/24V battery to logic voltage conversion
  • Industrial power supply from 24V/48V rails
  • Battery-powered systems with wide input range
  • LED driver and general-purpose buck conversion
  • Telecom and distributed power architectures

The TPS54560BDDAR from Texas Instruments is a 5A, 4.5V-60V step-down DC-DC converter in HSOIC-8 PowerPAD package. The device uses a 87mOhm high-side N-channel MOSFET with external Schottky catch diode for non-synchronous operation. The 2.2MHz maximum switching frequency allows compact inductor and capacitor selection, while the 146uA quiescent current extends battery life in always-on applications. The B version features a minimum 6.5A switch current limit (vs 5.5A for the original version) and spread-spectrum clock dithering for EMI reduction. The external compensation network provides flexibility for various output filter configurations. The DDA suffix denotes HSOIC-8 PowerPAD with tape and reel packaging.

The TPS54560BDDAR operates as a peak current-mode non-synchronous buck converter. (1) The integrated N-channel high-side MOSFET (87mOhm) connects the input voltage to the inductor during the on-time. During the off-time, the external Schottky diode provides the inductor current return path. The non-synchronous architecture trades slightly lower efficiency at light loads for simplicity and lower cost (no low-side MOSFET). The controller uses peak current-mode control where the PWM comparator compares the current sense signal with the error amplifier output to set the duty cycle. (2) The switching frequency is set by an external resistor from the RT/CLK pin to GND, adjustable from 100kHz to 2.2MHz. Higher frequencies allow smaller inductors and capacitors but increase switching losses. The RT/CLK pin also accepts an external clock for synchronization. The B version adds spread-spectrum frequency dithering (approximately +/-10% modulation) that spreads the switching energy across a wider bandwidth, reducing peak EMI emissions. (3) The 60V maximum input voltage makes the device suitable for automotive (12V/24V battery with load dump transients) and industrial (24V/48V rails) applications. The 6.5A minimum current limit ensures 5A output current delivery even at low input voltages. The external compensation allows optimization for various output capacitor types and values, enabling design flexibility not available with internally compensated devices.

Pin Name Function
1 BOOT Bootstrap capacitor (to SW)
2 VIN Input supply (4.5-60V)
3 EN Enable / UVLO programming
4 SS Soft-start (external capacitor)
5 VSENSE Feedback (0.8V reference)
6 COMP Error amplifier output / compensation
7 GND Ground (and PowerPAD)
8 SW Switch node (inductor + diode)
  • Automotive 12V/24V battery to 3.3V/5V conversion with 60V rating
  • Industrial 24V/48V to logic voltage buck conversion at 5A
  • Battery-powered systems with wide input range and 146uA IQ
  • LED driver with spread-spectrum EMI reduction (B version)
  • Telecom and distributed power with external compensation flexibility
Model Manufacturer Key Difference
TPS54560DDAR TI 5.5A min current limit, no SS
LM5161DDAR TI 1A, 65V, constant on-time
L6983NQR ST 3A, 4-38V, synchronous, HSOIC-8
MAX17503ATP+ ADI 5A, 4.5-60V, TSSOP-20
NCV51411DR2G onsemi 1.5A, 40V, SOIC-8
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Service & Packaging

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Contact Information

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Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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