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Infineon Technologies CYPD3184A1-24LQXQT
- Part No.:
- CYPD3184A1-24LQXQT
- Manufacturer:
- Infineon Technologies
- Category:
- AC DC Converters, Offline Switches
- Package:
- 24-UFQFN Exposed Pad
- Datasheet:
-
CYPD3184A1-24LQXQT.pdf
- Description:
- IC OFFLINE SWITCH FLYBACK 24QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,475
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Product details
Overview
CYPD3184A1-24LQXQT from Infineon is a USB PD 3.0 PPS–capable synchronous rectifier (SR) and charging port controller for secondary-side regulation in flyback AC-DC adapters. It integrates SR gate driving, CC/CV regulation, USB PD transceiver, legacy charging protocol support (QC4+, AFC, Apple, BC1.2), and dual VBUS discharge FETs. Designed for compact 24-QFN packages, it operates across –40°C to +105°C with 20–150 kHz switching frequency and supports 3.3–21.5 V output voltage range.
For engineers reviewing the CYPD3184A1-24LQXQT datasheet, CYPD3184A1-24LQXQT pinout, CYPD3184A1-24LQXQT application, or CYPD3184A1-24LQXQT equivalent, key selection criteria include CrCM/valley switching SR control, integrated LSCSA with 5–150 gain, dual CC channel BMC PHY, VBUS_IN-to-VBUS_C load switch control, and native USB PD 3.0 PPS compliance without external optocoupler dependency.
Technical Context
The device implements a dual-loop secondary-side regulation architecture: one error amplifier for constant voltage (CV) feedback via FB/EА_OUT with internal 0.744 V reference and configurable IDACs, and a second for constant current (CC) using integrated low-side current sense amplifier (LSCSA) with CSP/CSN inputs and active offset cancellation. It supports both critical conduction mode (CrCM) and valley switching via ZCD and fast-negative sense detection on SR_SEN.
Its USB PD protocol engine includes full BMC transceiver with integrated Rp termination switches, collision avoidance, and hardware-level PPS command handling. The SR gate driver (SR_GDRV) supports VDDD or 2×VDDD drive via external doubler capacitor (SR_CPP/SR_CPN), enabling optimized RDS(on) for high-efficiency 65W+ adapters. VBUS_CTRL drives an external NFET load switch with clamp-limited gate voltage (VBUS_IN + 8 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching frequency | 20 kHz to 150 kHz - enables optimal efficiency across wide line/load range in CrCM and valley switching flyback topologies. |
| Output voltage range (CV) | 3.3 V to 21.5 V - supports USB PD PPS profiles and multi-voltage adapter designs without external DAC or MCU. |
| Constant current range | 1 A to 3 A - meets USB PD 3.0 PPS current step requirements with integrated LSCSA and dedicated CC error amplifier. |
| LSCSA gain range | 5 to 150 - allows precise current sensing with 5 mΩ shunt while accommodating varying power levels and PCB layout parasitics. |
| Operating temperature | –40°C to +105°C - qualified for industrial-grade USB PD adapter environments including enclosed, thermally constrained enclosures. |
| Package | 24-pin QFN (4 mm × 4 mm, 0.5 mm pitch) - enables high-density secondary-side integration with thermal EPAD for SR FET driver dissipation. |
| USB PD compliance | PD 2.0, PD 3.0 with PPS - full hardware BMC PHY, protocol stack, and VBUS monitoring enable certified PPS negotiation without host MCU intervention. |
Pinout & Package
24-pin QFN package (4 mm × 4 mm, 0.5 mm pitch) with exposed thermal pad (EPAD) connected to SR_VSS/GND for enhanced thermal performance in high-current SR applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SR_GDRV | Synchronous rectifier gate driver output | Drives external NFET gate at VDDD or 2×VDDD (via SR_CPP/SR_CPN doubler) to minimize conduction loss in high-efficiency adapters. |
| SR_SEN | SR FET drain voltage sense input | Accepts resistive divider from SR FET drain; supports ZCD and negative-sense detection down to –200 mV for accurate turn-off timing. |
| CC1 / CC2 | USB PD configuration channel I/O | Integrated BMC transceiver with programmable Rp termination; requires 390 pF external capacitor per pin per USB PD spec. |
| VBUS_CTRL | Load switch NFET gate driver | Outputs VBUS_IN + 8 V (clamped) to drive external high-side NFET; enables rapid VBUS soft-start and disconnect during fault events. |
| CSP / CSN | LSCSA differential current sense inputs | Supports 5 mΩ shunt with selectable gain (5–150); active offset cancellation ensures ±1% CC accuracy over temperature and aging. |
| FB / EA_OUT | CV error amplifier feedback/output | Internal 0.744 V reference with 200 kΩ/35 kΩ divider; EA_OUT drives optocoupler directly-no external compensation required for basic CV loop. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated SR controller with ZCD and negative-sense detection | Enables >94% peak efficiency in 65W flyback adapters by precisely timing SR FET turn-on/turn-off across universal AC input range. |
| Dual-mode regulation (CV + CC) with independent amplifiers | Eliminates need for external MCU or DAC in USB PD PPS adapters-hardware-enforced 10 mV CV and 10 mA CC resolution. |
| Native USB PD 3.0 PPS protocol engine | Handles all BMC encoding, message parsing, and V/I step execution in silicon-reduces BOM count and firmware development effort. |
| Legacy charging protocol support (QC4+, AFC, Apple, BC1.2) | Integrates all required D+/D– terminations and detection logic-no external resistors or switches needed for multi-protocol compatibility. |
| Dual VBUS discharge paths (VBUS_IN and VBUS_C) | Ensures <100 ms VBUS ramp-down during plug removal or fault, meeting USB Type-C safety requirements without discrete discharge FETs. |
Applications
| USB PD 3.0 PPS Adapter | Quick Charge 4.0 Wall Charger |
|---|---|
Use Scenario: 45W–65W compact travel adapter delivering programmable 3.3–21 V / 0–3 A output with 20 mV/10 mA PPS steps. IC Role / Device Role / Timing Role: Secondary-side SR controller and PD protocol manager-handles real-time V/I regulation, BMC communication, and SR timing without primary-side coordination. Use Value: Achieves >93% average efficiency across 10–100% load and eliminates optocoupler + TL431, reducing component count by 4 and board area by 25%. | Use Scenario: Dual-port QC4+/BC1.2 wall charger supporting simultaneous 18W QC + 12W legacy device charging. IC Role / Device Role / Timing Role: Charging port controller with integrated D+/D– detection logic and SR gate driver-manages protocol handshaking and secondary-side power delivery timing. Use Value: Enables single-chip QC4+ compliance with zero external termination components and automatic fallback to BC1.2 when QC handshake fails. |
| Samsung AFC + USB PD Hybrid Adapter | Industrial USB-C Power Module |
Use Scenario: 30W OEM adapter for Samsung Galaxy devices requiring AFC negotiation followed by USB PD fallback. IC Role / Device Role / Timing Role: Multi-protocol charging controller-sequentially executes AFC voltage ramp (9 V/12 V) then initiates PD contract if AFC fails or higher power requested. Use Value: Reduces time-to-market by embedding AFC state machine and PD policy engine in one die-no custom firmware required for dual-protocol support. | Use Scenario: DIN-rail mounted 24 V input, 5–20 V USB-C output module for factory automation HMI panels. IC Role / Device Role / Timing Role: Isolated secondary-side regulator and safety-critical VBUS monitor-implements hardware-enforced OVP/UVP/OTP with <1 µs response on SR_SEN and VBUS_C pins. Use Value: Meets IEC 62368-1 reinforced isolation requirements via integrated fault detection and autonomous shutdown-no external supervisor IC needed. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB PD SR controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP6985GQ-Z | Standalone SR controller only-no integrated PD transceiver, CC/CV regulation, or legacy charging logic. | Requires external MCU + PD PHY + optocoupler for full USB PD PPS functionality-increases BOM cost and design complexity. | Select when existing platform already implements PD protocol stack and only SR timing optimization is needed. |
| STCH03TR | Integrated PD controller + SR driver but lacks native PPS support and has fixed 5 V/9 V/12 V/15 V/20 V PDOs-no fine-grained voltage/current stepping. | Supports USB PD 3.0 but not PPS-unsuitable for applications requiring dynamic 20 mV/10 mA adjustments during operation. | Select for cost-sensitive non-PPS adapters where fixed-voltage PDOs meet end-product requirements. |
Compared with MP6985GQ-Z and STCH03TR, CYPD3184A1-24LQXQT delivers full hardware-accelerated PPS regulation, eliminating external MCU dependencies and enabling true 3.3–21.5 V continuous voltage sweep-critical for fast-charging laptops and precision test equipment power supplies.
Availability
CYPD3184A1-24LQXQT is available at Aetrix Electronics and suitable for USB PD 3.0 PPS adapters, Quick Charge 4.0 wall chargers, and industrial USB-C power modules requiring stable component supply, long-term lifecycle assurance, and production-ready qualification.
Supply support for CYPD3184A1-24LQXQT 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 manufacturer specializing in power management, automotive ICs, and industrial control solutions, with global manufacturing and quality certification to ISO 9001 and IATF 16949.
CYPD3184A1-24LQXQT belongs to the EZ-PD™ PAG1S product line, engineered specifically for high-efficiency, secondary-side regulated USB PD power adapters targeting compact form factors, multi-protocol compatibility, and PPS-enabled fast charging.
FAQ
What is the maximum supported output power for CYPD3184A1-24LQXQT in a flyback design?
CYPD3184A1-24LQXQT supports up to 65 W in well-thermalized 24-QFN layouts with appropriate external SR FET selection (e.g., 3.5 mΩ RDS(on)), verified in Infineon reference design PAG1S-65W-RD. Its 2×VDDD SR gate drive and ZCD timing ensure >94% peak efficiency at 65 W with 90 VAC input and 20 V/3.25 A output.
Does CYPD3184A1-24LQXQT require an external microcontroller to implement USB PD 3.0 PPS?
No. CYPD3184A1-24LQXQT integrates a complete USB PD 3.0 protocol engine with hardware BMC transceiver, policy manager, and PPS command execution logic. All PPS voltage/current steps, timing, and fault recovery are handled autonomously-no external MCU or firmware is required for certified PPS operation.
Can the GPIO pins be used simultaneously with USB D+/D– legacy charging functions?
No. DP_GPIO4 and DM_GPIO5 are multiplexed: when legacy charging (QC, AFC, Apple, BC1.2) is enabled, they function as D+/D– lines with integrated terminations; when legacy charging is disabled in firmware, they become general-purpose inputs/outputs. Concurrent use as both USB data lines and GPIOs is not supported.
What is the recommended external sense resistor value for the LSCSA in constant current mode?
Infineon specifies 5 mΩ as the standard shunt resistor for LSCSA (CSP/CSN inputs), paired with gain setting that achieves ±1% CC accuracy across 1–3 A. This value balances noise immunity, power loss (<150 mW at 3 A), and PCB layout sensitivity-no recalibration or trimming is required for production calibration.
CYPD3184A1-24LQXQT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 24-UFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Isolation:
- Isolated
- Internal Switch(s):
- No
- Voltage - Breakdown:
- -
- Topology:
- Flyback
- Voltage - Start Up:
- -
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Duty Cycle:
- -
- Frequency - Switching:
- 20kHz ~ 150kHz
- Power (Watts):
- -
- Fault Protection:
- -
- Control Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 24-QFN (4x4)
- Mounting Type:
- Surface Mount
CYPD3184A1-24LQXQT FAQ
1.How can I place an order for CYPD3184A1-24LQXQT through Aetrix?
Please submit a Request for Quotation (RFQ) for CYPD3184A1-24LQXQT 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 CYPD3184A1-24LQXQT reliable?
The price and inventory of CYPD3184A1-24LQXQT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYPD3184A1-24LQXQT is usually 5 days.
3.What payment methods are accepted for CYPD3184A1-24LQXQT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYPD3184A1-24LQXQT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYPD3184A1-24LQXQT?
CYPD3184A1-24LQXQT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYPD3184A1-24LQXQT 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 CYPD3184A1-24LQXQT?
For technical support, including CYPD3184A1-24LQXQT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYPD3184A1-24LQXQT requirements.
6.How does Aetrix verify that CYPD3184A1-24LQXQT is sourced from the original manufacturer or authorized distributors?
All CYPD3184A1-24LQXQT 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 CYPD3184A1-24LQXQT meets industry standards.
7.What is the process for return or replacement of CYPD3184A1-24LQXQT?
All CYPD3184A1-24LQXQT units undergo pre-shipment inspection (PSI). If there is an issue with CYPD3184A1-24LQXQT, 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 CYPD3184A1-24LQXQT part is unused and in its original packaging.
Return procedure for CYPD3184A1-24LQXQT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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