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LMZ31520 ACTIVE 3V to 14.5V, 20A Step-Down Power Module in 15x16x5.8mm QFN Package This product offers a smaller-size QFN module and additional features such as light-load efficiency, power Good and remote sense.

Product details

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Surface Mount Module (BAT) 11 461 mm² 19.94 x 23.11 Surface Mount Module (EAT) 11 461 mm² 23.11 x 19.94 Through-Hole Module (EAS) 11 418 mm² 18.9 x 22.1
  • Up to 16-A Output Current
  • 4.5-V to 14-V Input Voltage
  • Wide-Output Voltage Adjust(0.69 V to 5.5 V)
  • ±1.5% Total Output Voltage Variation
  • Efficiencies up to 96%
  • Output Overcurrent Protection
    (Nonlatching, Auto-Reset)
  • Operating Temperature: -40°C to 85°C
  • Safety Agency Approvals:
    • UL/IEC/CSA-C22.2 60950-1
  • Prebias Startup
  • On/Off Inhibit
  • Differential Output Voltage Remote Sense
  • Adjustable Undervoltage Lockout
  • Ceramic Capacitor Version (PTH08T221W)
  • POLA™ Compatible
  • TurboTrans™ Technology
  • Designed to meet Ultra-Fast Transient
    Requirements up to 300 A/µs
  • SmartSync Technology
  • Auto-Track™ Sequencing
  • APPLICATIONS
    • Complex Multi-Voltage Systems
    • Microprocessors
    • Bus Drivers

Auto-Track, POLA and TurboTrans are trademarks of Texas Instruments.

  • Up to 16-A Output Current
  • 4.5-V to 14-V Input Voltage
  • Wide-Output Voltage Adjust(0.69 V to 5.5 V)
  • ±1.5% Total Output Voltage Variation
  • Efficiencies up to 96%
  • Output Overcurrent Protection
    (Nonlatching, Auto-Reset)
  • Operating Temperature: -40°C to 85°C
  • Safety Agency Approvals:
    • UL/IEC/CSA-C22.2 60950-1
  • Prebias Startup
  • On/Off Inhibit
  • Differential Output Voltage Remote Sense
  • Adjustable Undervoltage Lockout
  • Ceramic Capacitor Version (PTH08T221W)
  • POLA™ Compatible
  • TurboTrans™ Technology
  • Designed to meet Ultra-Fast Transient
    Requirements up to 300 A/µs
  • SmartSync Technology
  • Auto-Track™ Sequencing
  • APPLICATIONS
    • Complex Multi-Voltage Systems
    • Microprocessors
    • Bus Drivers

Auto-Track, POLA and TurboTrans are trademarks of Texas Instruments.

The PTH08T220/221W is a high-performance 16-A rated, non-isolated power module. These modules represent the 2nd generation of the popular PTH series power modules and include a reduced footprint and improved features. The PTH08T221W is optimized to be used with all ceramic capacitors.

Operating from an input voltage range of 4.5 V to 14 V, the PTH08T220/221W requires a single resistor to set the output voltage to any value over the range, 0.69 V to 5.5 V. The wide input voltage range makes the PTH08T220/221W particularly suitable for advanced computing and server applications that utilize a loosely regulated 8-V to 12-V intermediate distribution bus. Additionally, the wide input voltage range increases design flexibility by supporting operation with tightly regulated 5-V, 8-V, or 12-V intermediate bus architectures.

The module incorporates a comprehensive list of features. Output over-current and over-temperature shutdown protects against most load faults. A differential remote sense ensures tight load regulation. An adjustable under-voltage lockout allows the turn-on voltage threshold to be customized. Auto-Track sequencing is a popular feature that greatly simplifies the simultaneous power-up and power-down of multiple modules in a power system.

The PTH08T220/221W includes new patent pending technologies, TurboTrans™ and SmartSync. The TurboTrans feature optimizes the transient response of the regulator while simultaneously reducing the quantity of external output capacitors required to meet a target voltage deviation specification. Additionally, for a target output capacitor bank, TurboTrans can be used to significantly improve the regulators transient response by reducing the peak voltage deviation. SmartSync allows for switching frequency synchronization of multiple modules, thus simplifying EMI noise suppression tasks and reducing input capacitor RMS current requirements. The module uses double-sided surface mount construction to provide a low profile and compact footprint. Package options include both through-hole and surface mount configurations that are lead (Pb) - free and RoHS compatible.

The PTH08T220/221W is a high-performance 16-A rated, non-isolated power module. These modules represent the 2nd generation of the popular PTH series power modules and include a reduced footprint and improved features. The PTH08T221W is optimized to be used with all ceramic capacitors.

Operating from an input voltage range of 4.5 V to 14 V, the PTH08T220/221W requires a single resistor to set the output voltage to any value over the range, 0.69 V to 5.5 V. The wide input voltage range makes the PTH08T220/221W particularly suitable for advanced computing and server applications that utilize a loosely regulated 8-V to 12-V intermediate distribution bus. Additionally, the wide input voltage range increases design flexibility by supporting operation with tightly regulated 5-V, 8-V, or 12-V intermediate bus architectures.

The module incorporates a comprehensive list of features. Output over-current and over-temperature shutdown protects against most load faults. A differential remote sense ensures tight load regulation. An adjustable under-voltage lockout allows the turn-on voltage threshold to be customized. Auto-Track sequencing is a popular feature that greatly simplifies the simultaneous power-up and power-down of multiple modules in a power system.

The PTH08T220/221W includes new patent pending technologies, TurboTrans™ and SmartSync. The TurboTrans feature optimizes the transient response of the regulator while simultaneously reducing the quantity of external output capacitors required to meet a target voltage deviation specification. Additionally, for a target output capacitor bank, TurboTrans can be used to significantly improve the regulators transient response by reducing the peak voltage deviation. SmartSync allows for switching frequency synchronization of multiple modules, thus simplifying EMI noise suppression tasks and reducing input capacitor RMS current requirements. The module uses double-sided surface mount construction to provide a low profile and compact footprint. Package options include both through-hole and surface mount configurations that are lead (Pb) - free and RoHS compatible.

Technical documentation

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Type Title Date
* Data sheet 16-A, 4.5-V to 14-V Input, Non-Isolated, Wide Output Adjustable Power Module datasheet (Rev. K) 29 Jun 2009
Application note Power Two Xilinx(TM) LX240 Virtex-6(TM) Devices 20 Apr 2010
Application note High-Temperatures Soldering Requirements for Plug-in Power, Surface-Mount Pdts (Rev. A) 13 Aug 2009
Analog Design Journal Power management for processor core voltage requirements 14 Dec 2006

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Surface Mount Module (BAT) 11 View options
Surface Mount Module (EAT) 11 View options
Through-Hole Module (EAS) 11 View options

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