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Product details

Parameters

Vin (Min) (V) 4.5 Vin (Max) (V) 5.5 Continuous current (Max) (A) 2.5 Current limit (A) 0.25 to 2.7 Enable Active High Number of switches 1 Rating Catalog open-in-new Find other USB power switches & charging port controllers

Package | Pins | Size

WQFN (RTE) 16 9 mm² 3 x 3 open-in-new Find other USB power switches & charging port controllers

Features

  • Meets Battery Charging Specification BC1.2 for DCP and CDP
  • Meets Chinese Telecommunications Industry Standard YD/T 1591-2009
  • Supports Sleep-Mode Charging for Most Available Apple Devices and/or BC1.2 Compliant Devices
  • Compatible With USB 2.0 and 3.0 Power Switch Requirements
  • 2.6-GHz Bandwidth USB 2.0 Data Switch
  • 73-mΩ (typ.) High-Side MOSFET
  • Adjustable Current Limit up to 2.8 A (typical)
  • OUT Discharge Through CTLx=000 (TPS2540/40A) or DSC (TPS2541/41A) Input
  • Longer Detach Detection Time (TPS2540A/41A) Supporting Additional Legacy Devices
  • Available in 16-Pin QFN Package
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Description

The TPS2540/40A and TPS2541/41A are a combination of current-limited USB port power switch with a USB 2.0 high-speed data line (D+/D-) switch and a USB charging port identification circuit. Applications include notebook PCs and other intelligent USB host devices. The wide bandwidth (2.6 GHz) data-line switch also features low capacitance and low on resistance, allowing signals to pass with minimum edge and phase distortion. The TPS2540/40A/41/41A monitors D+ and D-, providing the correct hand-shaking protocol with compliant client devices.

The TPS2540/40A/41/41A supports the following charging logic schemes:

  • USB 2.0 BC1.2
  • Chinese Telecom Standard YD/T 1591-2009
  • Divider Mode, compliant with Apple devices such as iPod and iPhone

CTL1-CTL3 logic inputs are used to select one of the various charge modes provided by the TPS2540/40A and TPS2541/41A . These charge modes allow the host device to actively select between Dedicated Charging Port (DCP) (wall-adapter emulation), Charging Downstream Port (CDP) (active USB 2.0 data communications with 1.5-A support), or Standard Downstream Port (SDP) USB 2.0 Mode (active USB 2.0 data communications with 500-mA support). The TPS2540/40A/41/41A also integrates an auto-detect feature that supports both DCP schemes for Battery Charging Specification (BC1.2) and the Divider Mode without the need for outside user interaction.

The TPS2540A auto detect mode also has a longer detach detection time, so that it can support certain unique non-compliant devices. The TPS2540/40A/41/41A power-distribution switch is intended for applications where heavy capacitive loads and short-circuits are likely to be encountered, incorporating a 73-mΩ, N-channel MOSFET in a single package. Constant-current mode is used when the output load exceeds the current-limit threshold. ILIM_SEL logic input selects one of two current-limit thresholds, each one being individually adjustable via an external resistor. Additional USB switch features include a de-glitched output fault reporting (FAULT), and a logic-level enable EN (TPS2540/40A) or OUT discharge control DSC (TPS2541). With the TPS2540/40A, the mode “000” is used to force an output discharge.

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Technical documentation

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
49
Description
The TPS2540EVM-623 is a fully assembled and tested circuit for evaluating the TPS254x USB Charging Port Power Switch and Controller.
Features
  • USB Charging Port Power Switch and Controller
  • Meets Battery Charging Specification BC1.2 for DCP and CDP
  • Meets Chinese Telecommunications Industry 2.0 Standard YD/T 1591-2009
  • Compatible with USB 2.0 and 3.0 Power Switch Requirements
  • Adjustable Current-limit, 230 mA – 2800 mA typical
  • Fast Over-current (...)

Design tools & simulation

SIMULATION MODEL Download
SLVM332A.ZIP (34 KB) - PSpice Model

Reference designs

REFERENCE DESIGNS Download
Universal input, 5V,5A output Dual Port High Power USB Charger
PMP5952 — This reference design is a high efficiency dual charger designed with the UCC28610 + UCC24610 combination and 2 TPS2540 (USB switches). The UCC24610 provides quasi-resonant control and burst-mode for improved light-load efficiency and low standby power while the UCC24610 a green rectifier controller (...)
Design files

CAD/CAE symbols

Package Pins Download
WQFN (RTE) 16 View options

Ordering & quality

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  • Ongoing reliability monitoring

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