2.5-A high-efficient buck-boost converter with optimized load step response in tiny WCSP
Product details
Parameters
Package | Pins | Size
Features
- Two pin-2-pin device options, TPS63805 and TPS63806 with specific application focus
- Input voltage range: 1.3 V to 5.5 V
- Device input voltage > 1.8 V for start-up
- Output voltage range: 1.8 V to 5.2 V (adjustable)
- High efficiency over the entire load range
- Low operating quiescent current
- Power save mode and mode selection for forced PWM-mode
- Peak current buck-boost mode architecture
- Defined transition points between buck, buck-boost, and boost operation modes
- Forward and reverse current operation
- Start-up into pre-biased outputs
- Safety and robust operation features
- Integrated soft start
- Overtemperature- and overvoltage-protection
- True shutdown function with load disconnect
- Forward and backward current limit
- TPS63805
- Optimized for smallest solution size of 18.5 mm2 (works with a 22-µF minimum output capacitor)
- 2-A Output current for VI ≥ 2.3 V, VO = 3.3 V
- 11-µA Operating quiescent current
- TPS63806
- Optimized for best load step response (180-mV load-step response at a 2 A current step)
- Up to 2.5 A transient output current
- 13-µA Operating quiescent current
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Description
The TPS63805 and TPS63806 are high efficiency, high output current buck-boost converters. Depending on the input voltage, they automatically operate in boost, buck, or in a novel 4-cycle buck-boost mode when the input voltage is approximately equal to the output voltage. The transitions between modes happen at defined thresholds and avoid unwanted toggling within the modes to reduce output voltage ripple. The device output voltages are individually set by a resistive divider within a wide output voltage range.The TPS63805 achieves the lowest solution size with a tiny bill of materials. An 11-µA quiescent current enables the highest efficiency for little to no-load conditions.
The TPS63806 is optimized for applications where the load-step response under a heavy load profile is a concern.
The TPS63805 and TPS63806 come in a 1.4 mm x 2.3 mm package. The device works with tiny passive components to keep the overall solution size small.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
Features
- Real buck- or boost-mode operation with automatic and seamless transition between modes
- High efficiency from 500-μA to 2-A output current up to 96%
- 13-μA operating quiescent current
- True shutdown function with load disconnect
- Power save mode with mode selection
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
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CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| DSBGA (YFF) | 15 | View options |
Ordering & quality
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