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TPS82130SIL

3A Buck Module, 17Vin, Int Inductor, uSiL-8

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Manufacturer Part：

TPS82130SIL

Package：

uSiL-8 / MicroSiP (3.0 x 2.8 x 1.5 mm)

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Description

Product Overview

The TPS82130SIL from Texas Instruments is a 17V-input 3A step-down DC-DC converter MicroSiP power module with integrated inductor in a 3×2.8mm uSiL-8 package.

Key Specifications

Type 3A Step-Down Converter MicroSiP Power Module
Input Voltage 3V to 17V
Output Voltage 0.9V to 6V (adjustable)
Output Current 3 A (continuous)
Switching Frequency 2 MHz (nominal)
Quiescent Current 20 uA (typical, PSM)
Topology DCS-Control (Direct Control with Seamless transition)
100% Duty Cycle Yes (lowest dropout)
Power Good Output Yes (open-drain)
Package uSiL-8 (3.0 x 2.8 x 1.5 mm)
Operating Temperature -40C to +125C

Features

  • Integrated inductor in 3×2.8mm MicroSiP module
  • 3A continuous output current from 3-17V input
  • DCS-Control for excellent transient response
  • 2MHz switching frequency minimizes external components
  • 20uA quiescent current in power save mode
  • 100% duty cycle for lowest dropout operation
  • Programmable soft-start with tracking
  • Power-good output indicator

Applications

  • Industrial point-of-load power
  • Telecom and networking equipment
  • Solid state drives
  • Space-constrained DC-DC conversion

The TPS82130SIL from Texas Instruments is a complete 3A step-down DC-DC converter in a 3.0 x 2.8 x 1.5 mm MicroSiP power module that integrates the switching regulator IC and the inductor into a single package. The integrated inductor eliminates the most space-consuming external component and simplifies the PCB layout, requiring only input and output capacitors plus a feedback resistor divider to complete the design. The 3V to 17V input range supports a wide variety of bus voltages including 3.3V, 5V, 12V, and 15V. The 0.9V to 6V adjustable output covers common FPGA, MCU, and DDR supply voltages. The 2MHz switching frequency allows the use of small ceramic input and output capacitors while maintaining high efficiency. The DCS-Control topology provides fast transient response with seamless transition between PWM mode (heavy load) and power save mode (light load). The 20uA quiescent current in power save mode minimizes battery drain in always-on applications. The 100% duty cycle capability allows the output to track the input voltage with minimal dropout, maximizing usable battery capacity.

The TPS82130SIL uses TI’s DCS-Control (Direct Control with Seamless transition) topology, which is a proprietary control scheme that combines the advantages of voltage-mode and current-mode control. In PWM mode (heavy load), the device operates at a fixed 2MHz switching frequency with pulse-width modulation, providing low output ripple and predictable EMI behavior. The high-side MOSFET is turned on for the on-time (determined by VIN, VOUT, and fSW), during which inductor current ramps up linearly. When the high-side MOSFET turns off, the low-side synchronous MOSFET turns on and inductor current ramps down. The output voltage is sensed through the FB pin and compared with the internal 0.9V reference. In power save mode (light load), the device reduces the switching frequency and operates with single pulses, drawing only 20uA quiescent current from the input. The transition between PWM and PSM is seamless with no output voltage discontinuity. The 100% duty cycle mode is entered when VIN approaches VOUT: the high-side MOSFET is held on continuously, and the output follows VIN minus the RDS(ON) drop of the high-side FET and inductor DCR. The power-good (PG) comparator monitors the FB voltage and asserts (open-drain goes high-impedance) when the output is within 10% of the target.

Pin Name Type Function
1 EN Input Enable (HIGH=on, internal 400k pulldown)
2 VIN Power Input voltage (3-17V)
3 GND Power Ground
4,5 VOUT Output Regulated output voltage
6 FB Input Feedback (0.9V reference, resistor divider)
7 PG Output Power-good (open-drain)
8 SS/TR Input Soft-start / tracking (capacitor to GND)
Pad GND Power Exposed thermal pad (connect to GND)
  • 5V to 1.2V FPGA core power at 3A in only 3×2.8mm with integrated inductor and 2MHz DCS-Control
  • 12V to 3.3V telecom point-of-load with 20uA light-load quiescent current for always-on systems
  • Industrial sensor 5V rail from 12V bus with power-good output for load monitoring
Manufacturer Part Number Package Notes
TI TPS82140SIL uSiL-8 14V input, 2A version
TI TPS82085SIL uSiL-8 2A, 6V input, smaller
TI TPS62130ARGTR VQFN-16 Same IC without integrated inductor
Monolithic Power MPM3810GQV-Z QFN-16 3A module, 6V input
Richtek RT8815AGQW WQFN-24L Discrete, not module
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