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TPS63030DSKR

Buck-boost converter, 1.8-5.5V in, 1.2-5.5V out, 1A, 96% eff, WCSP-12 (2.5x2.5mm)

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Manufacturer Part：

TPS63030DSKR

Package：

WCSP-12 (2.50 x 2.50 x 0.60 mm)

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Description

Product Overview

The TPS63030DSKR from Texas Instruments is a high-efficiency buck-boost converter with 1.8A switches in a WCSP-12 (2.5×2.5mm) package. Operating from 1.8V to 5.5V input, it provides a regulated output above, below, or equal to the input voltage, ideal for single-cell Li-Ion battery applications.

Key Specifications

Input Voltage 1.8 V to 5.5 V
Output Voltage 1.2 V to 5.5 V (adjustable)
Output Current Up to 1A (buck/boost)
Switch Current 1.8 A
Efficiency Up to 96%
Switching Frequency 2.5 MHz
Quiescent Current 30 uA (typ)
Operating Temperature -40C to +85C

Features

  • Seamless transition between buck and boost modes
  • 2.5MHz switching frequency enables small inductor
  • 30uA quiescent current for battery life
  • Power-save mode at light load for high efficiency
  • 2.5×2.5mm WCSP-12 ultra-compact package

Applications

  • Single-cell Li-Ion powered devices
  • Portable instrumentation and medical devices
  • 3.3V supply from varying battery voltage
  • USB-powered devices with backup battery

The TPS63030DSKR from Texas Instruments is a high-efficiency buck-boost converter with 1.8A integrated switches in an ultra-compact WCSP-12 (2.5×2.5mm) package. The device operates from 1.8V to 5.5V input and provides a regulated output from 1.2V to 5.5V that can be above, below, or equal to the input voltage. This makes it ideal for single-cell Li-Ion battery applications where the output voltage (e.g., 3.3V) falls within the battery voltage range. The 2.5MHz switching frequency enables use of tiny chip inductors. Efficiency reaches up to 96% in buck mode, and a power-save mode maintains high efficiency at light loads. Quiescent current is only 30uA typical.

The TPS63030DSKR uses a four-switch buck-boost topology for seamless voltage regulation. (1) Buck Mode: When VIN > VOUT, the high-side switch (buck) and low-side switch (buck) operate as a standard buck converter. The boost switches remain off. (2) Boost Mode: When VIN < VOUT, the boost high-side and low-side switches operate as a boost converter. The buck high-side remains on. (3) Buck-Boost Mode: When VIN is approximately equal to VOUT, the controller uses all four switches in a combined buck-boost operation, seamlessly transitioning without output discontinuity. (4) Power-Save: At light loads, the device enters pulse-skipping mode where it delivers a burst of energy and then enters a low-Iq state, maintaining high efficiency. (5) Output Setting: The output voltage is set by an external resistor divider from VOUT to FB. The FB reference voltage is 0.5V.

Pin Name Type Function
A1 VIN Power Input supply (1.8-5.5V)
A2 GND Ground Ground
A3 EN Input Enable (active high)
B1 L1 I/O Inductor connection 1
B2 L2 I/O Inductor connection 2
B3 VOUT Power Output voltage
C1 FB Input Feedback voltage (0.5V ref)
C2 PS/SYNC Input Power save / synchronization
  • Single-cell Li-Ion powered devices with 3.3V constant output
  • Portable instrumentation and medical devices with buck-boost flexibility
  • USB-powered devices with backup battery seamless voltage regulation
  • Wearable electronics with 2.5×2.5mm ultra-compact footprint
Manufacturer Part Number Package Notes
TI TPS63020DSKR WCSP-12 Higher current (3A) version
TI TPS630701RNMR VQFN-9 2A buck-boost, 5.5-8V in
Monolithic Power MP2143GD-Z QFN-8 2A buck-boost
Richtek RT6150BQW WDFN-10 Similar buck-boost
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