: 4.5V-24V input Synchronous DCAP Mode Dual Step-Down Controller


Product details


Vin (Min) (V) 4.5 Vin (Max) (V) 24 Vout (Min) (V) 0.76 Vout (Max) (V) 5.5 Iout (Max) (A) 15 Iq (Typ) (uA) 450 Switching frequency (Min) (kHz) 350 Switching frequency (Max) (kHz) 350 Features Enable, Pre-Bias Start-Up, Synchronous Rectification Operating temperature range (C) -40 to 85 Regulated outputs (#) 2 Number of Phases 1 Rating Catalog open-in-new Find other Buck controllers (external switch)

Package | Pins | Size

TSSOP (PW) 28 62 mm² 9.7 x 6.4 VQFN (RGE) 24 16 mm² 4 x 4 open-in-new Find other Buck controllers (external switch)


  • High Efficiency, Low-Power Consumption
  • D-Cap Mode Enables Fast Transient Response
  • High Initial Reference Accuracy
  • Low Output Ripple
  • Wide Input Voltage Range: 4.5 V to 24 V
  • Output Voltage Range: 0.76 V to 5.5 V
  • Low-Side RDS(on) Loss-less Current Sensing
  • Adaptive Gate Drivers with Integrated Boost Diode
  • Internal 1.2-ms Voltage-Servo Soft Start
  • Built-In 5-V Linear Regulator
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The TPS53124 is a dual, Adaptive on-time DCAP mode synchronous controller. The part enables system designers to cost effectively complete the suite of digital TV power bus regulators with the absolute lowest external component count and lowest standby consumption. The main control loop for the TPS53124 uses the D-CAP™ mode that optimized for low ESR output capacitors such as POSCAP or SP-CAP promises fast transient response with no external compensation. The part provides a convenient and efficient operation with conversion voltages from 4.5 V to 24 V and output voltage from 0.76 V to 5.5 V.

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Technical documentation

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Type Title Date
* Datasheet TPS53124 Dual Synchronous Step-Down Controller For Low-Voltage Power Rails datasheet (Rev. C) Apr. 16, 2014
Selection guide Power Management Guide 2018 (Rev. R) Jun. 25, 2018
User guide High Performance Synchronous Buck EVM Using the TPS53124 Sep. 02, 2008

Design & development

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Hardware development

document-generic User guide
The TPS53124EVM evaluation module is a high efficiency, dual synchronous buck converter providing 1.05 V at 4 A and 1.8 V at 4 A from 5 V to 22 V input. The TPS53124 is a dual, adaptive on-time D-CAP™ mode synchronous buck controller. TPS53124 enables system designers to cost effectively complete (...)

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CAD/CAE symbols

Package Pins Download
TSSOP (PW) 28 View options
VQFN (RGE) 24 View options

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