TPS51518

ACTIVE

Single Phase D-CAP and D-CAP2 Controller with 2-bit Flexible VID Controller

Product details

Vin (min) (V) 3 Vin (max) (V) 28 Iout (max) (A) 20 Operating temperature range (°C) -10 to 105 Control mode D-CAP+, D-CAP2 Rating Catalog Vout (min) (V) 0.5 Vout (max) (V) 2 Iq (typ) (A) 0.00056 Duty cycle (max) (%) 70
Vin (min) (V) 3 Vin (max) (V) 28 Iout (max) (A) 20 Operating temperature range (°C) -10 to 105 Control mode D-CAP+, D-CAP2 Rating Catalog Vout (min) (V) 0.5 Vout (max) (V) 2 Iq (typ) (A) 0.00056 Duty cycle (max) (%) 70
WQFN (RUK) 20 9 mm² 3 x 3
  • Differential Voltage Feedback
  • DC Compensation for Accurate Regulation
  • Wide Input Voltage Range: 3 V to 28 V
  • Flexible, 2-Bit VID Supports Output Voltage from 0.5 V to 2.0 V
  • Adaptive On-Time Modulation with Selectable Control Architecture
    • D-CAP Mode at 350 kHz for Fast Transient Response
    • D-CAP2 Mode at 350 kHz for Ultra-Low/Low ESR Output Capacitor
  • 4700 ppm/°C, Low-Side RDS(on) Current Sensing
  • Programmable Soft-Start Time and Output Voltage Transition Time
  • Built-In Output Discharge
  • Power Good Output
  • Integrated Boost Switch
  • Built-In OVP/UVP/OCP
  • Thermal Shutdown (Non-latched)
  • 3 mm × 3 mm, 20-Pin, QFN (RUK) Package
  • Differential Voltage Feedback
  • DC Compensation for Accurate Regulation
  • Wide Input Voltage Range: 3 V to 28 V
  • Flexible, 2-Bit VID Supports Output Voltage from 0.5 V to 2.0 V
  • Adaptive On-Time Modulation with Selectable Control Architecture
    • D-CAP Mode at 350 kHz for Fast Transient Response
    • D-CAP2 Mode at 350 kHz for Ultra-Low/Low ESR Output Capacitor
  • 4700 ppm/°C, Low-Side RDS(on) Current Sensing
  • Programmable Soft-Start Time and Output Voltage Transition Time
  • Built-In Output Discharge
  • Power Good Output
  • Integrated Boost Switch
  • Built-In OVP/UVP/OCP
  • Thermal Shutdown (Non-latched)
  • 3 mm × 3 mm, 20-Pin, QFN (RUK) Package

The TPS51518 is a single phase, D-CAP™/ D-CAP2™ synchronous buck controller with 2-bit VID inputs which can select up to four independent externally programmable output voltage levels where full external programmability in the voltage level, step setting and voltage transition slew rate is desired. It is used for GFX applications where multiple voltage levels are desired.

The TPS51518 supports all POS/SPCAP and/or all ceramic MLCC output capacitor options in applications where remote sense is a requirement. Tight DC load regulation is achieved through external programmable integrator capacitor.

The TPS51518 provides full protection suite, including OVP, OCL, 5-V UVLO and thermal shutdown. It supports the conversion voltage up to 28 V, and output voltages adjustable from 0.5 V to 2 V.

The TPS51518 is available in the 3 mm × 3 mm, QFN, 0.4-mm pitch package and is specified from –10°C to 105°C.

The TPS51518 is a single phase, D-CAP™/ D-CAP2™ synchronous buck controller with 2-bit VID inputs which can select up to four independent externally programmable output voltage levels where full external programmability in the voltage level, step setting and voltage transition slew rate is desired. It is used for GFX applications where multiple voltage levels are desired.

The TPS51518 supports all POS/SPCAP and/or all ceramic MLCC output capacitor options in applications where remote sense is a requirement. Tight DC load regulation is achieved through external programmable integrator capacitor.

The TPS51518 provides full protection suite, including OVP, OCL, 5-V UVLO and thermal shutdown. It supports the conversion voltage up to 28 V, and output voltages adjustable from 0.5 V to 2 V.

The TPS51518 is available in the 3 mm × 3 mm, QFN, 0.4-mm pitch package and is specified from –10°C to 105°C.

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Technical documentation

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Type Title Date
* Data sheet Single Phase DCAP and D-CAP2 Controller with 2-bit Flexible VID Controller datasheet 18 Aug 2011

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Simulation model

TPS51518 IBIS Model

SLUM315.ZIP (10 KB) - IBIS Model
Simulation model

TPS51518 PSpice Transient Model

SLUM252.ZIP (77 KB) - PSpice Model
Reference designs

PMP7179 — 9.5W Synchronous Buck with VID Control Reference Design

The PMP7179 reference design uses the TPS51518 single phase DCAP/DCAP2 controller to generate an output voltage between 0.95V and 1.05V and a maximum output current of 9A. A 2-bit VID input can select four different output voltages. 
Test report: PDF
Schematic: PDF
Package Pins Download
WQFN (RUK) 20 View options

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