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Infineon Technologies CYPD7191-40LDXST
- Part No.:
- CYPD7191-40LDXST
- Manufacturer:
- Infineon Technologies
- Category:
- Application Specific Microcontrollers
- Package:
- 40-UFQFN Exposed Pad
- Datasheet:
-
CYPD7191-40LDXST.pdf
- Description:
- TYPE-C - AUTO
- Quantity:
- Payment:
- Shipping:
Inventory:1,129
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Product details
Overview
CYPD7191-40LDXST from Infineon is a single-port USB-C Power Delivery (PD) controller with integrated buck-boost DC-DC converter, AEC-Q100 Grade 2 qualified for automotive use. It features a 48 MHz Arm® Cortex®-M0 MCU (128 KB Flash, 16 KB SRAM), supports USB PD 3.2 including PPS and AVS modes, operates from 4 V–24 V input (40 V tolerant), and delivers 3.3 V–21.5 V output - deployed in head unit and rear-seat automotive chargers.
For engineers reviewing the CYPD7191-40LDXST datasheet, CYPD7191-40LDXST pinout, CYPD7191-40LDXST application, or CYPD7191-40LDXST equivalent, this device offers programmable switching frequency (150–600 kHz), hardware-based VBUS OVP/OCP/UVP, integrated VCONN supply, and legacy charging support (QC 5.0, AFC, Apple 3A, BC 1.2) - critical for robust, compact automotive USB-C power design.
Technical Context
The CYPD7191-40LDXST implements a fully programmable USB PD 3.2 stack with BMC physical layer, CC logic, and dual-role port negotiation, coupled with a synchronous buck-boost controller supporting buck, boost, and two buck-boost transition regions. Its integrated 48 MHz Cortex-M0 executes custom firmware for power throttling, temperature monitoring, and fault logging.
It integrates analog peripherals including two 8-bit ADCs, eight 16-bit TCPWMs, three SCBs (I²C/SPI/UART/LIN), and dedicated high-voltage gate drivers for external FETs - enabling closed-loop CV/CC regulation, spread-spectrum EMI reduction, and pulse-skipping or forced CCM operation per load condition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB PD Compliance | USB PD 3.2 with PPS (20 mV/50 mA steps) and AVS mode - enables precise voltage/current control for fast-charging smartphones and tablets |
| Input Voltage Range | 4 V to 24 V with 40 V absolute max - supports wide automotive battery range including cold-crank and load-dump transients |
| Output Voltage Range | 3.3 V to 21.5 V programmable - covers USB PD profiles (5/9/15/20 V) plus PPS fine-tuning |
| Switching Frequency | 150 kHz to 600 kHz, programmable - allows EMI optimization and inductor size trade-off |
| MCU Core | 48 MHz Arm® Cortex®-M0 with 128 KB Flash, 16 KB SRAM - hosts full PD stack + custom system management firmware |
| Protection Features | Hardware VBUS OVP/OCP/UVP, VBUS-to-CC short protection, VBAT-to-GND short protection - reduces need for external protection ICs |
| Temperature Rating | AEC-Q100 Grade 2 (–40°C to +105°C ambient, 125°C junction) - validated for under-dash automotive environments |
Pinout & Package
Package: 40-pin QFN (7 mm × 7 mm, 0.5 mm pitch), wettable flank, RoHS-compliant, AEC-Q100 qualified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CC1 / CC2 | USB Type-C Configuration Channel | Dual-role port detection, BMC signaling, and VCONN source control - enables plug orientation sensing and PD negotiation |
| VBUS_CTRL | VBUS Gate Driver Control Output | Drives external high-side NFET for VBUS power path - supports up to 5 A continuous current with external FET selection |
| SW1 / SW2 | Buck-Boost Switch Node Terminals | Connect to external high-side/low-side FETs for buck-boost power stage - defines topology (buck, boost, or buck-boost) based on VIN/VOUT ratio |
| CSPO / CSNO | Current Sense Inputs (High-Side) | Monitor input current via shunt resistor - enables cycle-by-cycle overcurrent protection and accurate input power limiting |
| ADC0 / ADC1 | Analog Input Channels | Measure board/connector temperature (via thermistor), VBUS, or auxiliary voltages - supports thermal derating and safety shutdown |
Key Features
| Feature | Design Value |
|---|---|
| Integrated VCONN Supply | 100 mW regulated output - powers Type-C cable electronics without external LDO or charge pump |
| Programmable Spread Spectrum | Reduces peak EMI by modulating switching frequency - meets CISPR 25 Class 5 requirements for automotive systems |
| Legacy Charging Support | Hardware-accelerated detection of QC 2.0/3.0/4.0/5.0, AFC, Apple 3A, BC 1.2 - eliminates need for secondary charging ICs |
| On-Chip Temperature Sensing | Internal sensor + ADC interface for external thermistors - enables real-time thermal management and dynamic power scaling |
| Three SCB Interfaces | I²C/SPI/UART/LIN configurable per port - allows host MCU communication, LIN-based diagnostics, or debug firmware updates |
Applications
| Head Unit (HU) Charger | Rear Seat Charger (RSC) |
|---|---|
Use Scenario: Integrated USB-C charging port in vehicle infotainment head unit, powered from 12 V battery rail. IC Role / Device Role / Timing Role: USB PD controller + buck-boost regulator - negotiates voltage/current with connected device and regulates output dynamically. Use Value: Delivers up to 20 V/3 A (60 W) with PPS support, enabling rapid charging of modern laptops and tablets directly from HU PCB space. | Use Scenario: Compact charging module mounted behind rear seat armrest, supplied from 24 V commercial vehicle battery. IC Role / Device Role / Timing Role: Single-chip PD + DC-DC solution - handles CC negotiation, VBUS control, and wide-input buck-boost conversion without discrete controllers. Use Value: Supports 4 V–24 V input range and 40 V transient tolerance - survives load dump events common in 24 V truck/bus electrical systems. |
| Rear Seat Entertainment (RSE) | Automotive Docking Station |
Use Scenario: Power delivery subsystem for tablet/media player docking cradle embedded in rear seat backrest. IC Role / Device Role / Timing Role: Dual-role PD port controller - acts as sink when docked, source when powering peripheral accessories via VCONN. Use Value: Integrated VCONN supply and CC logic eliminate separate VCONN switch IC - reduces BOM count and layout complexity. | Use Scenario: Multi-device automotive docking station supporting USB-C laptop, smartphone, and wireless earbuds simultaneously. IC Role / Device Role / Timing Role: Programmable PD controller with custom firmware - manages power allocation, thermal derating, and fault logging across multiple loads. Use Value: 128 KB flash enables field-upgradable firmware for new PD profiles or OEM-specific charging policies - extends product lifecycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB-C PD + buck-boost controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STUSB4500QTR | Standalone USB PD controller only - no integrated buck-boost; requires external DC-DC controller and FETs | Limited to fixed-output or simple buck topologies; lacks PPS, AVS, and programmable MCU | Select when cost-sensitive designs use discrete buck converters and require minimal PD functionality |
| MPQ4282-AEC1 | Dedicated AEC-Q100 buck-boost controller - no USB PD stack, CC PHY, or MCU; analog-only control loop | Suitable only for non-PD constant-voltage applications; cannot negotiate with Type-C devices | Select when USB-C compliance is unnecessary and only wide-range DC-DC regulation is required |
Compared with STUSB4500QTR and MPQ4282-AEC1, CYPD7191-40LDXST uniquely combines full USB PD 3.2 stack, programmable buck-boost control, and automotive-grade MCU in one die - eliminating inter-IC timing constraints, reducing PCB area by >35%, and enabling firmware-defined power policies.
Availability
CYPD7191-40LDXST is available at Aetrix Electronics and suitable for head unit (HU) chargers, rear seat chargers (RSC), and rear seat entertainment (RSE) systems requiring stable component supply, AEC-Q100 qualification, and long-term automotive lifecycle support.
Supply support for CYPD7191-40LDXST 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 security solutions, with global R&D and manufacturing infrastructure.
CYPD7191-40LDXST belongs to the EZ-PD™ CCG7S product line - designed specifically for automotive USB-C power delivery applications requiring AEC-Q100 qualification, integrated buck-boost regulation, and field-upgradable firmware.
FAQ
What USB PD specifications does CYPD7191-40LDXST support?
CYPD7191-40LDXST supports USB PD 3.2 specification, including Programmable Power Supply (PPS) mode with 20 mV voltage steps and 50 mA current steps, Adjustable Voltage Supply (AVS) mode, and Extended Data Messaging (XID). It implements full BMC physical layer, dual-role port negotiation, and hard-wired VBUS protection - all verified per USB-IF compliance test plans.
Does CYPD7191-40LDXST integrate power MOSFETs?
No, CYPD7191-40LDXST does not integrate power MOSFETs. It is the variant without integrated FETs in the CYPD719x family and requires external high-side and low-side FETs for the buck-boost power stage. Pin assignments SW1, SW2, HG1FET_DRAIN, LG1FET_DRAIN, HG2FET_DRAIN, and LG2FET_DRAIN are provided for direct gate drive and current sensing.
How is firmware updated on CYPD7191-40LDXST?
Firmware updates are performed via SWD interface during programming or in-system using bootloader modes: over CC line (USB PD data channel), I²C bus, or LIN bus. The on-chip 128 KB flash supports dual-bank operation for safe over-the-air updates, and the bootloader resides in protected ROM - enabling secure, field-upgradable PD policy and system management logic without external programmer hardware.
What protection features are implemented in hardware?
CYPD7191-40LDXST implements hardware-based VBUS overvoltage (OVP), overcurrent (OCP), and undervoltage (UVP) protection; VBUS-to-CC short-circuit protection; VBAT-to-GND short protection; and under-voltage lockout (UVLO). These functions operate independently of firmware execution and respond within <500 ns - ensuring fail-safe behavior during transients, connector faults, or software crashes.
CYPD7191-40LDXST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- EZ-PD™ CCG7D
- Package/Case:
- 40-UFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Applications:
- USB Type C
- Core Processor:
- ARM® Cortex®-M0
- Program Memory Type:
- FLASH (128kB), ROM (32kB)
- Controller Series:
- EZ-PD™
- RAM Size:
- 16K x 8
- Interface:
- I2C, SPI, UART, USB
- Number of I/O:
- 13
- Voltage - Supply:
- 4V ~ 24V
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 40-QFN (6x6)
CYPD7191-40LDXST FAQ
1.How can I place an order for CYPD7191-40LDXST through Aetrix?
Please submit a Request for Quotation (RFQ) for CYPD7191-40LDXST 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 CYPD7191-40LDXST reliable?
The price and inventory of CYPD7191-40LDXST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYPD7191-40LDXST is usually 5 days.
3.What payment methods are accepted for CYPD7191-40LDXST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYPD7191-40LDXST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYPD7191-40LDXST?
CYPD7191-40LDXST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYPD7191-40LDXST 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 CYPD7191-40LDXST?
For technical support, including CYPD7191-40LDXST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYPD7191-40LDXST requirements.
6.How does Aetrix verify that CYPD7191-40LDXST is sourced from the original manufacturer or authorized distributors?
All CYPD7191-40LDXST 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 CYPD7191-40LDXST meets industry standards.
7.What is the process for return or replacement of CYPD7191-40LDXST?
All CYPD7191-40LDXST units undergo pre-shipment inspection (PSI). If there is an issue with CYPD7191-40LDXST, 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 CYPD7191-40LDXST part is unused and in its original packaging.
Return procedure for CYPD7191-40LDXST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CYPD7191-40LDXST Tags
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