TPS51518RUKT

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1. Describe

The TPS51518RUKT is a single-phase D-CAP™/D-CAP2™ synchronous buck controller with a 2-bit VID input that selects up to four independent externally programmable output voltage levels, where voltage level, step Full external programmability of settings and voltage conversion slew rates are ideal. It is used in GFX applications that require multiple voltage levels. The TPS51518RUKT supports all POS/SPCAP and/or all ceramic MLCC output capacitor options in applications requiring remote sensing. Tight DC load regulation is achieved with an external programmable integrating capacitor. The TPS51518 offers a complete protection kit including OVP, OCL, 5V UVLO and thermal shutdown. It supports conversion voltages up to 28V and adjustable output voltages from 0.5V to 2V. The TPS51518RUKT is available in a 3mm × 3mm, QFN, 0.4mm pitch package and is specified over the temperature range of –10°C to 105°C.

2. Feature

    1. Differential voltage feedback

    2. Precisely adjusted DC compensation

    3. Wide input voltage range: 3 V to 28 V

    4. Flexible 2-bit VID supports output voltages from 0.5 V to 2.0 V

    5. Adaptive on-time modulation with optional control architecture

        – D-CAP™ mode at 350 kHz for fast transient response

        – D-CAP2™ Mode at 350 kHz for Ultra Low/Low ESR Output Capacitors

    6. 4700 ppm/°C, low-side RDS(on) current sensing

    7. Programmable soft-start time and output voltage transition time

    8. Built-in output discharge

    9. Power good output

  10. Integrated boost switch

  11. Built-in OVP/UVP/OCP

  12. Thermal shutdown (non-latching)

  13. 3 mm × 3 mm, 20-pin, QFN (RUK) package

3. Application

    1. laptop

    2. GFX consumables

    3. System agent for Intel Chief River platforms

4. Pin configuration

5. Pin Description