TPS8268180EVM-589: 1.8V @ 1.6A, 2.5 ~ 5.5Vin, Buck

Summary

The TPS82681xxEVM-589 facilitates the evaluation of the TPS8268xxx MicroSiP™ module family. There are two EVMs in this family: TPS8268105EVM-589 (PWR589-001) and TPS8268180EVM-589 (PWR589-002). PWR589-001 outputs a 1.05-V output voltage at up to 1.6 A of output current, while PWR589-002 outputs a 1.80-V output voltage at up to 1.6 A of output current. Both EVMs operate from input voltages between 2.5 V and 5.5 V.

The TPS8268xxx are synchronous, step-down modules in a 2.3- x 2.9- x 1-mm package. All required passives are included.

The printed-circuit board (PCB) for this EVM is designed to accommodate some modifications by the user. Additional input and output capacitors can be added. C2 is provided for an additional input capacitor. This capacitor is not required for proper operation but can be used to reduce the input voltage ripple. C3, C4, and C5 are provided for additional output capacitors. These capacitors are not required for proper operation but can be used to reduce the output voltage ripple and to improve the load transient response. The total output capacitance must remain within the recommended range in the data sheet for proper operation.

Specifications

Manufacturer	Texas Instruments
Category	AC/DC and DC/DC Conversion
Sub-Category	DC/DC SMPS - Single Output
Eval Board Part Number	296-43178-ND
Eval Board Supplier	Texas Instruments
Eval Board	Normally In Stock
Topology	Step Down
Outputs and Type	1 Non-Isolated
Voltage Out: Factory Set	1.8 V
Current Out	1.6 A
Voltage In	2.5 ~ 5.5 V
Efficiency @ Conditions	>80%, 5V in, 1.8V @ 0.19 ~ 1.5 A >80%, 4.2V in, 1.8V @ 0.12 ~ 1.5 A >80%, 3V in, 1.8V @ 0.055 ~ 1.5 A >80%, 3.6V in, 1.8V @ 0.09 ~ 1.5 A >80%, 2.5V in, 1.8V @ 0.03 ~ 1.5 A >80%, 12V in, 1.0V @ 20 ~ 75 A
Voltage Out Range	- Fixed
Features	Current Limit (Adj. or Fixed) Over Current Protection PWM Interface Shutdown, Enable, Standby Soft Start Thermal Protection
Switching Frequency	5.5 MHz
Standby Current [Typical]	500 nA
Quiescent Current [Typical]	7 mA
Component Count + Extras	3 + 7
Internal Switch	Yes
Design Author	Texas Instruments
Application / Target Market	Cell Phones Point of Load (PoL) Portable Devices
Standby Current [Maximum]	5 µA
Quiescent Current [Maximum]	- Not Given
Main I.C. Base Part	TPS8268180
Date Created By Author	2014-10
Date Added To Library	2016-04