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Home > Products > Integrated Circuits (ICs) > Interface > Controllers

Infineon Technologies CYPD3178-24LQXQT

Name: CYPD3178-24LQXQT
Brand: Infineon Technologies
SKU: CYPD3178-24LQXQT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CYPD3178-24LQXQT

Manufacturer:: Infineon Technologies

Category:: Controllers

Package:: 24-UFQFN Exposed Pad

Datasheet:: CYPD3178-24LQXQT.pdf

Description:: CCG3PA

Quantity:: RFQ Add To RFQ list

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Product details

Overview

CYPD3178-24LQXQT from Infineon is a pre-programmed USB Type-C sink port controller for barrel connector replacement in power-sink devices. It integrates CC transceiver with dead-battery RD, VBUS load switch controller (soft-start), OVP/UVP, VBUS-to-CC short protection, and I²C host processor interface. Supports 5 V @ 3 A sink operation and legacy charging protocols (BC1.2, Apple, AFC, QC 2.0) via D+/D–, targeting drones, smart speakers, and power tools.

For engineers reviewing the CYPD3178-24LQXQT datasheet, CYPD3178-24LQXQT pinout, CYPD3178-24LQXQT application, or CYPD3178-24LQXQT equivalent, key selection criteria include VBUS voltage range (3.0–24.5 V), integrated ESD protection (±8 kV contact), I²C slave address (0x08), SAFE_PWR_EN fallback behavior, and QFN-24 package compatibility with industrial temperature range (–40°C to +105°C).

Technical Context

The device implements a hardware-based USB Type-C sink stack with fixed firmware-no user programming required. Its USB PD subsystem includes dedicated analog blocks for CC line termination (bonded RD), VBUS overvoltage/undervoltage detection with HPI-configurable thresholds, and VBUS-to-CC short protection rated for 17 V continuous and 17–22 V for 1000 hours.

Power architecture supports dual supply inputs: VBUS_IN_DIS (3.0–24.5 V, 30 V tolerant) and VDDD (2.7–5.5 V). Internal regulation generates 3.3 V (VDDD) and 1.8 V (VCCD); gate drivers for external PFETs (VBUS_CTRL, SAFE_PWR_EN) feature slew-rate control and fault-aware enable logic tied to power contract negotiation status.

Key Specifications

Parameter	Value and Actual Design Meaning
USB Role	Sink-only port controller with fixed RD termination for UFP detection and dead-battery support
VBUS Input Range	3.0 V to 24.5 V (30 V absolute max); enables direct use with 5 V, 9 V, 12 V, 15 V, 20 V adapters
Legacy Charging Support	BC1.2, Apple 2.4 A, AFC, QC 2.0 via D+/D– lines; licensing required for AFC/QC
I²C Interface	Slave mode only, fixed address 0x08, up to 1 Mbps (fast-mode plus), open-drain I/O with 8 mA sink capability
ESD Protection	±8 kV contact / ±15 kV air-gap on CC1/CC2, VBUS_IN_DIS, DC_OUT_DIS, D+, D−, HPI_SDA/SCL per IEC61000-4-2 Level 4C
Operating Temperature	–40°C to +105°C ambient; qualified for extended industrial environments
Package	24-pin QFN (4 mm × 4 mm, 0.5 mm pitch, exposed thermal pad)

Pinout & Package

Supplied in a 24-pin QFN package (4 mm × 4 mm, 0.5 mm pitch) with exposed thermal pad for enhanced power dissipation in compact portable designs.

Pin/Terminal	Circuit Role	Design Meaning
1 VBUS_MIN	VBUS minimum threshold input	Resistor divider input referenced to VDDD (3.3 V); sets lowest acceptable VBUS voltage for negotiated contract
2 VBUS_MAX	VBUS maximum threshold input	Resistor divider input referenced to VDDD; defines upper bound of requested voltage range
3 VBUS_CTRL	Load switch gate driver output	Slew-rate controlled PMOS gate drive; enabled only when negotiated VBUS falls within VBUS_MIN/MAX window
4 SAFE_PWR_EN	Fallback power rail gate driver	PMOS gate drive activated when higher-power contract fails; delivers 5 V via alternate FET path if CHARGING_MODE = high
5 D+	Legacy charging data line	Connects to Type-C connector D+ for BC1.2, Apple, AFC, QC 2.0 handshake; no USB 2.0 data path
6 D−	Legacy charging data line	Connects to Type-C connector D−; used exclusively for proprietary charging protocol signaling
7 HPI_INT/SWD_DAT	Interrupt/output or debug data	Open-drain interrupt output (HPI_INT) or SWD data pin; shares function depending on configuration
8 HPI_SCL	I²C clock input	Open-drain I²C clock line; requires external pull-up; supports up to 1 Mbps
9 HPI_SDA	I²C data I/O	Open-drain bidirectional I²C data line; requires external pull-up
10 FAULT	Fault indicator output	Active-low open-drain output asserting on OVP, UVP, VBUS-to-CC short, or VBUS discharge timeout
11 VSS	Digital ground	Primary digital reference plane; connects to PCB ground plane under exposed pad
12 CC1	Configuration Channel 1	Integrated CC transceiver with bonded RD; detects plug orientation and source connection; protected against VBUS shorts
13 CC2	Configuration Channel 2	Redundant CC path with identical RD and protection; ensures robust Type-C detection regardless of cable insertion
14 VBUS_IN_DIS	Main VBUS input	High-voltage input (3.0–24.5 V); powers internal regulator and enables VBUS monitoring and protection functions
15 VDDD	Internal regulated supply	3.3 V output from internal LDO; powers digital core and analog peripherals; used as reference for VBUS_MIN/MAX dividers
16 VSS	Analog ground	Separate AGND return for precision analog blocks; recommended to tie to digital ground at single point
17 DC_OUT_DIS	Discharge control output	Drives external discharge FET gate; activates upon source disconnect to drain VBUS capacitance
18 CHARGING_MODE	Legacy protocol enable input	High = enable all legacy charging (AFC/QC/Apple); low = disable proprietary protocols, retain BC1.2 only
19 VSS	Ground	Additional ground connection; improves noise immunity and thermal conduction via exposed pad
20 VBUS_FET_EN	VBUS path enable control	Logic-level enable signal for external VBUS FET; synchronized with VBUS_CTRL timing and fault conditions
21 VSS	Ground	Ground pin adjacent to sensitive analog inputs; minimizes coupling in high-noise environments
22 NC	No connect	Internally unused; must be left floating or tied to ground per layout guidelines
23 NC	No connect	Internally unused; must be left floating or tied to ground per layout guidelines
24 VSS	Ground	Final ground pin; completes thermal and electrical connection to exposed pad

Key Features

Feature	Design Value
Pre-programmed sink controller	Zero-firmware-design solution: eliminates MCU integration, BOM cost, and qualification effort for USB-C power entry
VBUS-to-CC short protection	Withstands 17 V continuously and 17–22 V for 1000 hrs on CC pins-prevents field failure from USB-C connector misrouting
SAFE_PWR_EN fallback path	Enables graceful degradation: delivers 5 V via alternate rail when higher-power PD contract fails, preserving basic system operation
Integrated ESD protection	Full IEC61000-4-2 Level 4C compliance on all exposed pins-reduces need for external TVS diodes and board space
Legacy charging protocol support	Hardware-accelerated D+/D– detection for BC1.2, Apple, AFC, QC 2.0-enables backward compatibility without host CPU involvement

Applications

Drone Battery Charging

Smart Speaker Power Entry

Use Scenario: Portable drone with removable Li-ion battery pack charged via USB-C port instead of legacy barrel jack.

IC Role / Device Role / Timing Role: Sink port controller managing VBUS negotiation, legacy adapter detection, and safe 5–20 V power routing to battery management IC.

Use Value: Enables universal charging with USB-C PD adapters while retaining compatibility with 5 V wall adapters and QC-enabled car chargers.

Use Scenario: Voice-controlled smart speaker powered by USB-C instead of micro-USB or AC adapter.

IC Role / Device Role / Timing Role: USB-C sink controller handling plug detection, VBUS validation, and 5 V/9 V power delivery to audio SoC and amplifier rails.

Use Value: Eliminates need for custom AC-DC converter; supports fast charging during firmware updates and reduces standby power loss.

Power Tool Battery Pack

Industrial Handheld Scanner

Use Scenario: Cordless power tool with swappable battery packs using USB-C for rapid recharging in workshop environments.

IC Role / Device Role / Timing Role: High-reliability sink controller with VBUS short protection and industrial temp range, interfacing with battery fuel gauge and charger IC.

Use Value: Survives mechanical stress-induced VBUS-to-CC shorts common in ruggedized connectors; supports 15 W+ fast charge from multi-voltage PD sources.

Use Scenario: Rugged handheld barcode scanner deployed in warehouses with mixed legacy and modern charging infrastructure.

IC Role / Device Role / Timing Role: Dual-role power manager detecting USB-A (5 V), USB-C (5–12 V), and QC2.0 (9 V) sources to optimize charge rate and runtime.

Use Value: Delivers consistent 5 V operation across all adapters while enabling faster recharge when higher-voltage sources are available.

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB Type-C sink controller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
CYPD3177-24LQXQT	Same die, no D+/D– support; lacks legacy charging protocol detection	Restricted to pure USB-C PD sinks without Apple/QC/AFC requirements	Select when only standardized PD contracts are needed and legacy adapter compatibility is unnecessary
STUSB4500QTR	Standalone sink controller with no integrated D+/D– or legacy charging logic; requires external MCU for protocol handling	Demands host firmware development for BC1.2/AFC/QC; adds BOM and validation overhead	Choose only if full design flexibility and custom PD policy control are required over turnkey simplicity

Compared with CYPD3177-24LQXQT, this part adds essential D+/D– hardware for legacy charging-critical for consumer device field compatibility. Versus STUSB4500QTR, it eliminates MCU dependency and firmware certification, reducing time-to-market by ~12 weeks for volume production.

Availability

CYPD3178-24LQXQT is available at Aetrix Electronics and suitable for drone battery charging, smart speaker power entry, and industrial handheld scanner designs requiring stable component supply, industrial temperature operation, and USB-C sink functionality with legacy charging support.

Supply support for CYPD3178-24LQXQT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a German semiconductor leader specializing in power management, automotive MCUs, and connectivity solutions, with global manufacturing and quality certifications including IATF 16949 and ISO 9001.

This device belongs to the EZ-PD™ BCR-LITE family-designed specifically to replace barrel connectors in portable rechargeable electronics by delivering a fully integrated, pre-certified USB-C sink solution with minimal external components and zero firmware development.

FAQ

Is CYPD3178-24LQXQT programmable or field-configurable?

No. It is a pre-programmed, fixed-function USB Type-C sink controller. Configuration is limited to analog resistor dividers (VBUS_MIN/MAX) and digital inputs (CHARGING_MODE, FAULT). All PD policy, legacy charging state machines, and protection logic are hard-coded in silicon and cannot be modified.

Does it support USB Power Delivery communication beyond 5 V?

Yes-it negotiates USB PD contracts up to 20 V (within VBUS_MIN/MAX limits), but does not implement full USB PD messaging (e.g., no Source Capabilities exchange). It relies on hardware-based voltage window matching and responds only to Request messages that fall within its configured range.

What is the role of the SAFE_PWR_EN pin in system design?

SAFE_PWR_EN drives an external PFET to deliver 5 V to a secondary power rail when the primary PD contract fails. This allows partial system operation (e.g., MCU boot, status LED) even if the requested voltage (e.g., 12 V) is unavailable-provided CHARGING_MODE is asserted high to enable the fallback path.

Can it be used in a USB-C source application?

No. CYPD3178-24LQXQT is strictly a sink-only controller. It lacks source-side CC logic, Rp termination, VCONN generation, and source power path control. For source or DRP applications, Infineon's CYPD3125 or CYPD3171 families are required.

CYPD3178-24LQXQT Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Package/Case:: 24-UFQFN Exposed Pad

Programmable:: Not Verified

Protocol:: USB

Function:: Controller

Interface:: I2C

Standards:: -

Voltage - Supply:: 3V ~ 24.5V

Current - Supply:: 10mA

Operating Temperature:: -40°C ~ 105°C (TA)

Supplier Device Package:: 24-QFN (4x4)

Grade:: -

Qualification:: -

CYPD3178-24LQXQT FAQ

1.How can I place an order for CYPD3178-24LQXQT through Aetrix?

Please submit a Request for Quotation (RFQ) for CYPD3178-24LQXQT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for CYPD3178-24LQXQT reliable?

The price and inventory of CYPD3178-24LQXQT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYPD3178-24LQXQT is usually 5 days.

3.What payment methods are accepted for CYPD3178-24LQXQT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYPD3178-24LQXQT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CYPD3178-24LQXQT?

CYPD3178-24LQXQT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CYPD3178-24LQXQT order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for CYPD3178-24LQXQT?

For technical support, including CYPD3178-24LQXQT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYPD3178-24LQXQT requirements.

6.How does Aetrix verify that CYPD3178-24LQXQT is sourced from the original manufacturer or authorized distributors?

All CYPD3178-24LQXQT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CYPD3178-24LQXQT meets industry standards.

7.What is the process for return or replacement of CYPD3178-24LQXQT?

All CYPD3178-24LQXQT units undergo pre-shipment inspection (PSI). If there is an issue with CYPD3178-24LQXQT, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The CYPD3178-24LQXQT part is unused and in its original packaging.

Return procedure for CYPD3178-24LQXQT:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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