TPS2546-Q1 USB-Charging Port Controller and Power Switch With Load Detection
1 Features
- AEC-Q100 Qualified
- Device HBM ESD Classification Level H2
- Device CDM ESD Classification Level C5
- Operating Range: 4.5 V to 5.5 V
- D+/D– CDP/DCP Modes per USB Battery Charging Specification 1.2
- D+/D– Shorted Mode per Chinese Telecommunication Industry Standard YD/T
1591-2009 - Supports Non-BC1.2 Charging Modes by Automatic Selection:
- D+/D– Divider Modes 2 V/2.7 V and 2.7 V/2 V
- D+/D– 1.2-V Mode
- Supports Sleep-Mode Charging and Mouse/Keyboard Wakeup
- Automatic SDP/CDP Switching for Devices That Do Not Connect to CDP Ports
- Load Detection for Power Supply Control in S4/S5 Charging and Port Power Management in All Charge Modes
- Compatible With USB 2.0 and 3.0 Power Switch Requirements
- I73-mΩ (Typical) High-Side MOSFET
- Adjustable Current-Limit up to 3 A (Typical)
- Operating Range: 4.5 V to 5.5 V
- Max Device Current:
- 2 µA When Device Disabled
- 270 µA When Device Enabled
- Drop-In and BOM Compatible With TPS2543
- Available in 16-Pin WQFN (3.00 mm × 3.00 mm) Package
2 Applications
- Automotive
- USB Ports (Host and Hubs)
- Notebook and Desktop PCs
- Universal Wall-Charging Adapters
3 Description
The TPS2546-Q1 is a USB charging port controller and power switch with an integrated USB 2.0 high-speed data line (D+/D–) switch. TPS2546-Q1 provides the electrical signatures on D+/D– to support charging schemes listed under Feature Description. TI tests charging of popular mobile phones, tablets, and media devices with the TPS2546 to ensure compatibility with both BC1.2 compliant, and non-BC1.2 compliant devices.
In addition to charging popular devices, the TPS2546-Q1 also supports two distinct power management features, namely, power wake and port power management (PPM) through the STATUS pin. Power wake allows for power supply control in S4/S5 charging and PPM the ability to manage port power in a multi-port application. Additionally, system wake up (from S3) with a mouse/keyboard (both low speed and full speed) is fully supported in the TPS2546-Q1.
The TPS2546-Q1 73-mΩ power-distribution switch is intended for applications where heavy capacitive loads and short-circuits are likely to be encountered. Two programmable current thresholds provide flexibility for setting current limits and load detect thresholds.
Device Information(1)
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| TPS2546-Q1 | WQFN (16) | 3.00 mm × 3.00 mm |
- For all available packages, see the orderable addendum at the end of the data sheet.
Simplified Schematic
4 Revision History
Changes from A Revision (December 2013) to B Revision
- Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section.Go
- Changed the Device Control Pins To: Control Pin Settings Matched to System Power StatesGo
Changes from * Revision (October 2013) to A Revision
- Changed document status from Product Preview to Production DataGo
- Features, Deleted: Qualified for Automotive Applications and Temperature Grade 1 textGo
- Features, Changed the "Load Detection" bullet Go
- Features, Deleted "USB-compatible" bullet from listGo
- Features, Deleted Integrated from MOSFET bulletGo
- Electrical Characteristics, Changed the DISCHARGE specification in the section by splitting TDCHG into long and short time, and removing test condition for RDCHGGo
- Electrical Characteristics: High-Bandwidth Switch, Deleted the max value for DP/DM switch off-state capacitanceGo
- Electrical Characteristics: High-Bandwidth Switch, Deleted the max value for DP/DM switch on-state capacitanceGo
- Electrical Characteristics: High-Bandwidth Switch, Deleted the max value for tSKGo
- Functional Block Diagram, Deleted TPS2543 Only Go
- Changed flow line condition names for DCP_SHORT and DCP_DIVIDER in the Device Control Pins table to match those listed in the Truth Table Go
- Figure 38, Deleted discharge time of 2 seconds from Go
- Output Discharge section, Added tDCHG_L and tDCHG_S textGo
5 Pin Configuration and Functions
Pin Functions
| PIN | TYPE(1) | DESCRIPTION | |
|---|---|---|---|
| NO. | NAME | ||
| 1 | IN | P | Input voltage and supply voltage; connect 0.1 μF or greater ceramic capacitor from IN to GND as close to the device as possible. |
| 2 | DM_OUT | I/O | D– data line to USB host controller. |
| 3 | DP_OUT | I/O | D+ data line to USB host controller. |
| 4 | ILIM_SEL | I | Logic-level input signal used to control the charging mode, current limit threshold, and load detection; see Table 3. Can be tied directly to IN or GND without pullup or pulldown resistor. |
| 5 | EN | I | Logic-level input for turning the power switch and the signal switches on/off; logic low turns off the signal and power switches and holds OUT in discharge. Can be tied directly to IN or GND without pullup or pulldown resistor. |
| 6 | CTL1 | I | Logic-level inputs used to control the charging mode and the signal switches; see Table 3. Can be tied directly to IN or GND without pullup or pulldown resistor. |
| 7 | CTL2 | I | |
| 8 | CTL3 | I | |
| 9 | STATUS | O | Active-low open-drain output, asserted in load detection conditions. |
| 10 | DP_IN | I/O | D+ data line to downstream connector. |
| 11 | DM_IN | I/O | D– data line to downstream connector. |
| 12 | OUT | P | Power-switch output. |
| 13 | FAULT | O | Active-low open-drain output, asserted during overtemperature or current limit conditions. |
| 14 | GND | P | Ground connection. |
| 15 | ILIM_LO | I | External resistor connection used to set the low current-limit threshold and the load detection current threshold. A resistor to ILIM_LO is optional; see Current-Limit Settings in Detailed Description. |
| 16 | ILIM_HI | I | External resistor connection used to set the high-current-limit threshold. |
| — | Thermal Pad | — | Internally connected to GND; used to heatsink the part to the circuit board traces. Connect to GND plane. |
