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USB PD Charger Battery Management

Overview

Description

This USB Power Delivery (PD) charger battery management system (BMS) is designed to support high-efficiency charging for multi-cell battery packs, delivering up to 240W in compliance with USB PD 3.1 Extended Power Range (EPR). The system integrates a USB Type-C® Port Controller (TCPC), an I2C-connected MCU-based Type-C Port Manager (TCPM), a high-voltage buck-boost charger, and a battery front-end (BFE) with fuel gauging for system health monitoring.

The 140W charger battery management system features a 30V buck-boost charger designed for 3- to 4-cell battery packs. It supports USB PD EPR and integrates a BFE with a built-in fuel gauge for simplified system monitoring. This mid-power design is ideal for compact applications requiring efficient charging and reliable battery diagnostics.

The 240W charger battery management system supports higher-voltage 3- to 10-cell battery configurations using a 48V buck-boost charger. The default firmware supports 6–10 cell packs, while 3–5 cell support is available with a firmware update. This system features two battery management options:

  • A BFE with an integrated fuel gauge and built-in MCU, capable of operating independently. In this setup, the external MCU (also acting as the TCPM) polls the device over I2C for battery data.
  • A BFE-only IC, which offers a lower-cost, more flexible alternative. It requires external configuration and management via I2C, relying more on the system MCU for control and monitoring.

System Benefits:

  • Complies with USB Power Delivery Specification Revision 3.1 and supports AVS/PPS.
  • Offers selectable power roles: Dual Role Power (DRP), Sink (SNK) only, or Source (SRC) only.
  • Includes autonomous detection and action capabilities.
  • Utilizes a single MCU communication solution.
  • Ensures robust battery safety and management.
  • Supports charging systems with up to 10 cells.
  • Provides optional BMS boards for enhanced battery safety and activity management.

Comparison

Applications

Block Diagram

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USB PD 140W Charger Battery Management

US272-1 Connector Line.641 Connector Line.659 Connector Line.657 Sheet.18 Connector Line.650 Connector Line.649 Connector Line.647 Connector Line.646 Connector Hallow Arrow Connector Line.644 Connector Line.643 Connector Line.640 Connector Line.637 Connector Line.634 Connector Arrow Connector Line.629 Connector Line.627 Connector Line.624 Connector Line.622 Connector Line.618 Connector Line.620 Connector Line.612 Connector Line.608 Connector Line.605 Connector Line.604 Connector Line.603 Resistor2.2542 Sheet.12 Sheet.13 Sheet.14 Sheet.15 Sheet.17 BAT + BAT + BAT + Rsense Rsense Rsense Sheet.21 Power/Control Power/Control Power/Control Sheet.35 Sheet.38 Battery 1-Cell.3168 Sheet.40 Sheet.41 Line 1pt.1552 Line 1pt.1583 ….. ….. ….. Battery 1-Cell.3174 Sheet.46 Sheet.47 Line 1pt.1552 Line 1pt.1583 Bat Interface Bat Interface Bat Interface Sheet.51 Sheet.52 Sheet.53 Sheet.54 Sheet.55 Sheet.56 Sheet.57 Sheet.58 Sheet.59 3~7 Cells 3~7 Cells 3~7 Cells Bat Interface Bat Interface Bat Interface Sheet.62 Sheet.63 Sheet.64 Sheet.65 Sheet.66 Sheet.67 Sheet.68 Sheet.69 ... ... ... Sheet.72 Battery Holder Board Battery Holder Board Battery Holder Board BMS Board BMS Board BMS Board 2x10 2x10 2x10 2x5 2x5 2x5 2x10 2x10 2x10 Vertical Wire Bundle.2985 2 2 2 Sheet.82 CC1 CC1 CC1 CC2 CC2 CC2 VCON VCON VCON Sheet.106 28V 28V 28V Sheet.165 Sheet.166 PMOS PMOS PMOS USB-C.2608 USB-C USB-C USB-C Sheet.171 Sheet.172 Sheet.173 Sheet.174 Sheet.175 Sheet.176 Sheet.177 Sheet.178 Sheet.179 Sheet.180 Sheet.181 Sheet.182 Sheet.183 Power/Control Power/Control Power/Control Sheet.188 Sheet.191 Sheet.192 Sheet.193 Sheet.194 Sheet.195 Sheet.196 Sheet.197 Sheet.198 USB PD Charger Board USB PD Charger Board USB PD Charger Board 2x5 2x5 2x5 Vertical Wire Bundle.3374 2 2 2 Sheet.204 Sheet.206 Sheet.207 Sheet.216 Sheet.217 Sheet.218 Sheet.219 2x5 2x5 2x5 BAT - BAT - BAT - Ground.2825 Sheet.243 Sheet.244 Ground.698 Sheet.246 Sheet.247 Ground.703 Sheet.250 Sheet.251 GND GND GND Sheet.256 Ground.712 Sheet.258 Sheet.259 Connector 1.160 Ground.728 Sheet.274 Sheet.275 H-Bridge H-Bridge H-Bridge P-Channel Depletion MOSFET Sheet.506 Sheet.507 Sheet.508 Sheet.509 Sheet.510 Sheet.511 Sheet.512 Sheet.513 Sheet.514 Sheet.515 Sheet.516 Connect.46 Sheet.518 Sheet.519 N-Channel Depletion MOSFET.601 N-Channel Depletion MOSFET.603 N-Channel Depletion MOSFET Sheet.525 Sheet.526 Sheet.527 Sheet.528 Sheet.529 Sheet.530 Sheet.531 Sheet.532 Sheet.533 Sheet.534 Sheet.535 Sheet.536 Connect.50 Sheet.538 Sheet.539 Sheet.540 N-Channel Depletion MOSFET.541 Sheet.542 Sheet.543 Sheet.544 Sheet.545 Sheet.546 Sheet.547 Sheet.548 Sheet.549 Sheet.550 Sheet.551 Sheet.552 Sheet.553 Connect.50 Sheet.555 Sheet.556 Sheet.557 N-Channel Depletion MOSFET.561 Sheet.562 Sheet.563 Sheet.564 Sheet.565 Sheet.566 Sheet.567 Sheet.568 Sheet.569 Sheet.570 Sheet.571 Sheet.572 Sheet.573 Connect.50 Sheet.575 Sheet.576 Sheet.577 N-Channel Depletion MOSFET.579 Sheet.580 Sheet.581 Sheet.582 Sheet.583 Sheet.584 Sheet.585 Sheet.586 Sheet.587 Sheet.588 Sheet.589 Sheet.590 Sheet.591 Connect.50 Sheet.593 Sheet.594 Sheet.595 US272-1 US272-1 US272-1 Connector Line Connector Line.606 Connector Line.607 Connector Line.610 Connector Line.611 Connector 1.163 Connector Line.623 Connector Line.625 Connector Line.626 Bi-directional Connector Arrow.633 Connector Arrow.638 Bi-directional.639 Connector Hallow Arrow.653 Connector 1.163.654 Connector Line.658 Sheet.660 Bi-directional.661 Vertical Wire Bundle 2 2 2 Sheet.673 Vertical Wire Bundle.674 2 2 2 Sheet.676 Sheet.677 Bi-directional.678 Sheet.679 Buck-Boost Buck-Boost Buck-Boost Buck-Boost ADP ADP ADP ACOK ACOK ACOK Vsys Vsys Vsys GND GND GND Vbat Vbat Vbat I²C I²C I²C BGATE BGATE BGATE Sheet.680 USB PD Controller USB PD Controller USB PD Controller ALERT ALERT ALERT GATE GATE GATE I²C I²C I²C GND GND GND VDD33 VDD33 VDD33 Sheet.681 MCU MCU MCU nInt nInt nInt I²C I²C I²C VDD VDD VDD I²C I²C I²C VSS VSS VSS GPIO GPIO GPIO Sheet.682 Sheet.6 BMS MCU+BFE BMS MCU+BFE BMSMCU+BFE Cells Cells Cells CFET CFET CFET Isense Isense Isense DFET DFET DFET I²C I²C I²C VSS VSS VSS
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USB PD 240W Charger Battery Management

US272-2 Connector Line.868 Connected signals line.889 Connected signals line.782 Connector Line.806 Connector Line.865 Connector Line.867 Connector Arrow.780 Connector Line.788 Connector Line.789 Connected signals line.920 Connector Line.641 Connector Line.657 Sheet.311 Connector Line.650 Connector Line.649 Connector Line.647 Connector Line.646 Connector Hallow Arrow Connector Line.644 Connector Line.643 Connector Line.640 Connector Line.637 Connector Line.634 Connector Arrow Connector Line.629 Connector Line.627 Connector Line.624 Connector Line.622 Connector Line.618 Connector Line.620 Connector Line.612 Connector Line.608 Connector Line.605 Connector Line.604 Connector Line.603 Resistor2.2542 Sheet.335 Sheet.336 Sheet.337 Sheet.338 Sheet.339 BAT + BAT + BAT + Rsense Rsense Rsense Sheet.342 Power/Control Power/Control Power/Control Sheet.344 Sheet.345 Battery 1-Cell.3168 Sheet.347 Sheet.348 Line 1pt.1552 Line 1pt.1583 ….. ….. ….. Battery 1-Cell.3174 Sheet.353 Sheet.354 Line 1pt.1552 Line 1pt.1583 Bat Interface Bat Interface Bat Interface Sheet.358 Sheet.359 Sheet.360 Sheet.361 Sheet.362 Sheet.363 Sheet.364 Sheet.365 Sheet.366 3~10 Cells 3~10 Cells 3~10 Cells Bat Interface Bat Interface Bat Interface Sheet.369 Sheet.370 Sheet.371 Sheet.372 Sheet.373 Sheet.374 Sheet.375 Sheet.376 ... ... ... Sheet.378 Battery Holder Board Battery Holder Board Battery Holder Board BMS Board BMS Board BMS Board 2x10 2x10 2x10 2x5 2x5 2x5 2x10 2x10 2x10 Vertical Wire Bundle.2985 2 2 2 Sheet.386 CC1 CC1 CC1 CC2 CC2 CC2 VCON VCON VCON Sheet.390 Sheet.392 Sheet.393 PMOS PMOS PMOS USB-C.2608 USB-C USB-C USB-C Sheet.397 Sheet.398 Sheet.399 Sheet.400 Sheet.401 Sheet.402 Sheet.403 Sheet.404 Sheet.405 Sheet.406 Sheet.407 Sheet.408 Sheet.409 Power/Control Power/Control Power/Control Sheet.411 Sheet.412 Sheet.413 Sheet.414 Sheet.415 Sheet.416 Sheet.417 Sheet.418 Sheet.419 USB PD Charger Board USB PD Charger Board USB PD Charger Board 2x5 2x5 2x5 Vertical Wire Bundle.3374 2 2 2 Sheet.424 Sheet.425 Sheet.426 Sheet.427 Sheet.428 Sheet.429 Sheet.430 2x5 2x5 2x5 BAT - BAT - BAT - Ground.2825 Sheet.434 Sheet.435 Ground.698 Sheet.437 Sheet.438 Ground.703 Sheet.440 Sheet.441 GND GND GND Sheet.443 Ground.712 Sheet.445 Sheet.446 Connector 1.160 Ground.728 Sheet.449 Sheet.450 H-Bridge H-Bridge H-Bridge P-Channel Depletion MOSFET Sheet.453 Sheet.454 Sheet.455 Sheet.456 Sheet.457 Sheet.458 Sheet.459 Sheet.460 Sheet.461 Sheet.462 Sheet.463 Connect.46 Sheet.465 Sheet.466 N-Channel Depletion MOSFET.601 N-Channel Depletion MOSFET.603 N-Channel Depletion MOSFET Sheet.470 Sheet.471 Sheet.472 Sheet.473 Sheet.474 Sheet.475 Sheet.476 Sheet.477 Sheet.478 Sheet.479 Sheet.480 Sheet.481 Connect.50 Sheet.483 Sheet.484 Sheet.485 N-Channel Depletion MOSFET.541 Sheet.487 Sheet.488 Sheet.489 Sheet.490 Sheet.491 Sheet.492 Sheet.493 Sheet.494 Sheet.495 Sheet.496 Sheet.497 Sheet.498 Connect.50 Sheet.500 Sheet.501 Sheet.502 N-Channel Depletion MOSFET.561 Sheet.504 Sheet.505 Sheet.506 Sheet.507 Sheet.508 Sheet.509 Sheet.510 Sheet.511 Sheet.512 Sheet.513 Sheet.514 Sheet.515 Connect.50 Sheet.517 Sheet.518 Sheet.519 N-Channel Depletion MOSFET.579 Sheet.521 Sheet.522 Sheet.523 Sheet.524 Sheet.525 Sheet.526 Sheet.527 Sheet.528 Sheet.529 Sheet.530 Sheet.531 Sheet.532 Connect.50 Sheet.534 Sheet.535 Sheet.536 US272-2 US272-2 US272-2 Connector Line Connector Line.606 Connector Line.607 Connector Line.610 Connector Line.611 Connector 1.163 Connector Line.623 Connector Line.625 Connector Line.626 Bi-directional Connector Arrow.633 Connector Arrow.638 Bi-directional.639 Connector Hallow Arrow.653 Connector 1.654 Connector Line.658 Sheet.554 Bi-directional.661 Vertical Wire Bundle 2 2 2 Sheet.558 Vertical Wire Bundle.674 2 2 2 Sheet.561 Sheet.562 Bi-directional.678 Sheet.565 Buck-Boost Buck-Boost Buck-Boost ADP ADP ADP ACOK ACOK ACOK Vsys Vsys Vsys GND GND GND Vbat Vbat Vbat I²C I²C I²C BGATE BGATE BGATE Sheet.581 MCU MCU MCU nInt nInt nInt I²C I²C I²C VDD VDD VDD I²C I²C I²C VSS VSS VSS GPIO GPIO GPIO Sheet.589 BMS BMS MCU+BFE BMS MCU+BFE BMSMCU+BFE Cells Cells Cells CFET CFET CFET Isense Isense Isense DFET DFET DFET I²C I²C I²C VSS VSS VSS PACK PACK PACK Pack+ Pack+ Pack+ Pack- Pack- Pack- BMS Option 1 BMS Option 1 BMS Option 1 Connector Line.605 Power/Control Power/Control Power/Control Bi-directional.776 Vertical Wire Bundle.777 2 2 2 Sheet.779 Connected signals line Connector Line.783 Connector Line.784 Pack+ Pack+ Pack+ Bat Interface Bat Interface Bat Interface ….. ….. ….. Connector Line.799 Connected signals line.800 BAT + BAT + BAT + Connector Line.807 BAT - BAT - BAT - Connector Line.831 Connector Line.832 Connector Line.833 Connector Line.834 Connector Line.835 Connector Line.836 Connector Line.837 Connector Line.838 Connector Line.839 Connector Line.842 Diode Sheet.846 Sheet.847 Sheet.848 Diode.849 Sheet.850 Sheet.851 Sheet.852 Resistor2.853 Sheet.854 Sheet.855 Sheet.856 Sheet.857 Sheet.863 Sheet.864 Connector Line.866 Connector Line.869 Connector Line.870 Connector Line.871 Connector Line.872 Connected signals line.873 Resistor2.881 Sheet.882 Sheet.883 Sheet.884 Sheet.885 Sheet.886 Sheet.887 Connector Line.888 Diode.890 Sheet.891 Sheet.892 Sheet.893 Connector Line.894 Diode.895 Sheet.896 Sheet.897 Sheet.898 Connector Line.899 Pack- Pack- Pack- 2X NMOS 2X NMOS 2X NMOS 2X NMOS 2X NMOS 2X NMOS Rd_sense Rd_sense Rd_sense Rd_sense Rd_sense Rd_sense Board.317 LOAD LOAD LOAD Connected signals line.909 Connected signals line.910 BMS Option 2 BMS Option 2 BMS Option 2 Ground - Signal Sheet.913 Sheet.914 Sheet.915 Sheet.916 Sheet.917 Sheet.791 Sheet.792 Sheet.793 Sheet.794 Sheet.795 Sheet.796 Sheet.797 Sheet.798 Sheet.924 BMS BMS BMS VPACK VPACK VPACK VSS VSS VSS I²C I²C I²C ALERT ALERT ALERT VC# VC# VC# LCFET LCFET LCFET CCSP CCSP CCSP LDFET LDFET LDFET DCSP DCSP DCSP Sheet.925 USB PD Controller USB PD Controller USB PD Controller ALERT ALERT ALERT GATE GATE GATE I²C I²C I²C GND GND GND VDD33 VDD33 VDD33 TCPC TCPC TCPC VSINK VSINK VSINK
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