TPS254900A-Q1 Automotive USB Host Charger With Short-to-VBATT Protection | TI.com

TPS254900A-Q1 (ACTIVE)

Automotive USB Host Charger With Short-to-VBATT Protection

Automotive USB Host Charger With Short-to-VBATT Protection - TPS254900A-Q1
 

More Information and Sample Availability

Prototype samples are available (PTPS254900AIRVCTQ1). Order Now

Description

The TPS254900A-Q1 device is a USB charging-port controller and power switch with short-to-battery protection. This feature provides protection on OUT, DM_IN and DP_IN. These three pins withstand voltage up to 18 V.

The internal MOSFET turns off quickly when the short-to-battery condition occurs. Rapid turnoff is very important to protect the upstream DC-DC converter, processor, or hub data lines.

The TPS254900A-Q1 has a low UVLO of 3.5 V, so that the power switch does not turn off during start-stop.

The TPS254900A-Q1 45-mΩ power switch has two selectable, adjustable current limits that support port power management by changing to a lower current limit when adjacent ports are experiencing heavy loads. This is important in systems with multiple ports and upstream power supplies with limited capacity.

The TPS254900A-Q1 device has a current-sense output that is able to control an upstream supply, which allows it to maintain 5 V at the USB port even with heavy charging currents. This feature is important in systems with long USB cables where significant voltage drops can occur with fast-charging portable devices.

A current monitor allows a system to monitor the load current in real time by monitoring the IMON voltage. The current monitor is very useful and can be used for dynamic port-power management.

The TPS254900A-Q1 device also provides ESD protection capability per IEC 61000-4-2, level 4 on DP_IN and DM_IN.

Features

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C5
  • 4.5-V to 6.5-V Input Operating Range
  • 3.5-V (typ) UVLO to Support Start-Stop
  • Integrated 45-mΩ (typ.) High-Side MOSFET
  • 3.2-A Maximum Continuous Output Current
  • VBUS ±5% Cable Compensation Accuracy at Connector
  • Supports USB BC 1.2 CDP and SDP Modes
  • Short-to-Battery Protection on OUT, DP_IN, and DM_IN Pins
  • DP_IN and DM_IN IEC 61000-4-2 Rated
    • ±8-kV Contact and ±15-kV Air Discharge
  • 20-Pin QFN (3-mm × 4-mm) Package

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Parametrics Compare all products in USB Charging Port Controllers

 
Vin (Min) (V)
Vin (Max) (V)
Number of Switches
Enable
Continuous Current (Max) (A)
Current Limit (A)
rDS(on) per FET (Typ) (mOhms)
Current Limit Accuracy @ 1A
Rating
Operating Temperature Range (C)
Fault Response
Pin/Package
TPS254900A-Q1 TPS2549-Q1 TPS254900-Q1
4.5     4.5     4.5    
6.5     6.5     6.5    
1     1     1    
Active High     Active High     Active High    
3.2     3.2     3    
0.25 to 3.6     0.25 to 3.6     0.25 to 3.4    
45     47     45    
10%     10%     10%    
Automotive     Automotive     Automotive    
-40 to 85     -40 to 85     -40 to 85    
Retry     Retry     Retry    
20WQFN     16WQFN     20WQFN