Reference Designs
Switched-Cap Fast Charge Reference Design for USB Power Delivery Programmable Power Supply
Texas Instruments
The goal of this reference design is to show the total system performance when using the switched-cap fast charge topology in a smart phone application. The system includes using a smart wall adapter that supports USB Power Delivery (PD) Programmable Power Supply (PPS) specifications to reduce losses over the charging cable as well as reduce losses and the temperature rise in the smart phone. The bq25970 is the first switched-capacitor charger from TI that is capable of delivering up to 8A of charge current to a battery.
Features
- High efficiency charging 96.6% at 6AFull system example for USB PD PPS voltage and current controlSoftware flow chart for phone and wall adapterbq25890 for precharge: taper charge and terminationbq25970 for 6A charging with 3A cable currentTUSB422 USB PD controller for communication with smart wall adapter
Applications
- Portable printer
Product Categories
- Power management
End Equipment Reference Diagrams
Application Area
End Equipment
Featured products
| Manufacturer: | Texas Instruments |
|---|---|
| Part Family: | DP83TC811-Q1 |
| Status: | ACTIVE |
| ROHS: | Y |
| PB Free: | Y |
| Manufacturer: | Texas Instruments |
|---|---|
| Part Family: | UCC15240-Q1 |
| Status: | ACTIVE |
| ROHS: | Y |
| PB Free: | Y |
| Manufacturer: | Texas Instruments |
|---|---|
| Part Family: | TMP1827 |
| Status: | ACTIVE |
| ROHS: | Y |
| PB Free: | Y |
| Manufacturer: | Texas Instruments |
|---|---|
| Part Family: | SN74AHC1G02-Q1 |
| Status: | ACTIVE |
| ROHS: | Y |
| PB Free: | Y |
| Manufacturer: | Texas Instruments |
|---|---|
| Part Family: | DLP301S |
| Status: | ACTIVE |
| ROHS: | Y |
| PB Free: | Y |
| Manufacturer: | Texas Instruments |
|---|---|
| Part Family: | TMUXHS221LV |
| Status: | ACTIVE |
| ROHS: | Y |
| PB Free: | Y |
