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Diodes Incorporated DPS1133FIAQ-13
- Part No.:
- DPS1133FIAQ-13
- Manufacturer:
- Diodes Incorporated
- Package:
- 17-VFQFN Exposed Pad
- Datasheet:
-
DPS1133FIAQ-13.pdf
- Description:
- PD SWITCH V-QFN4040-17 T&R 4K
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
DPS1133FIAQ from Diodes Incorporated is a 24V/3A single-channel USB PD-compliant power switch with integrated MOSFET (RDS(ON) = 30 mΩ), fast role swap support per USB PD 3.0 v1.0a, and programmable current/voltage limits via external resistors. It provides reverse-voltage blocking, input overvoltage protection up to 24.5 V, and 2 µs short-circuit response for robust hot-swap operation in USB Type-C® docking stations.
For engineers reviewing the DPS1133FIAQ datasheet, DPS1133FIAQ pinout, DPS1133FIAQ application, or DPS1133FIAQ equivalent, key selection considerations include its adjustable dV/dt ramp control (via CDV/DT capacitor), dual port-discharge capability (DISC1/DISC2), fault blanking time (7 ms), and AEC-Q100 qualification for automotive-grade reliability.
Technical Context
The DPS1133FIAQ implements a high-side N-channel MOSFET power switch with integrated gate driver, UVLO (3.6 V typ), thermal shutdown (165 °C), and analog-based current monitoring (IMON output). Its Fast Role Swap (FRS) logic synchronizes IN/OUT port discharge and sequencing to meet USB PD 3.0 role-swapping timing requirements within 60 µs turn-on delay.
Protection architecture includes independent threshold-setting for overcurrent (ILIM pin, 1–3 A range), overvoltage (VLIM pin, 6–24.5 V range), and reverse voltage (VIN–VOUT < –30 mV triggers 2 µs cutoff). Fault reporting occurs via open-drain FAULTB with internal 25 Ω pull-down and 7 ms deglitching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | 4.5 V to 24 V input; supports full USB PD voltage range including 20 V PPS profiles. |
| RDS(ON) | 30 mΩ max at 24 V; enables ≤100 mV drop at 3.3 A, minimizing conduction loss and thermal rise. |
| Current Limit | Programmable 1–3 A via ILIM resistor (e.g., 33.3 kΩ sets 3 A); fast-trip threshold = 1.125×ILIM + 1.8 A. |
| Overvoltage Threshold | Set by VLIM resistor: 0.1×RVLIM + 0.5 V (e.g., 240 kΩ → 24.5 V rising threshold). |
| dV/dt Control | Capacitor on DV/DT pin sets output ramp rate: tDV/DT = 0.083 × VIN × CDV/DT (ms, C in nF). |
| Fault Response | FAULTB asserts low after 7 ms blanking; supports noise-immune system-level fault handling without external filtering. |
| Short-Circuit Response | 2 µs detection latency ensures immediate MOSFET shutdown before energy dissipation exceeds SOA limits. |
Pinout & Package
Housed in a thermally enhanced, lead-free V-QFN4040-17 package (4.0 mm × 4.0 mm × 0.85 mm) with exposed SRC pad for low-thermal-resistance PCB mounting (RθJA = 58.5 °C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 IN | Power Input | High-current input node; accepts 4.5–24 V; connects to upstream source (e.g., USB-C CC-controlled supply). |
| 4 EN | Enable Control | Active-high digital enable (1.4 V threshold); must be driven-no floating allowed. |
| 5 FRS | Fast Role Swap Trigger | Initiates coordinated IN/OUT discharge and reconfiguration sequence compliant with USB PD 3.0 v1.0a. |
| 6 GND | Ground Reference | Primary signal and power return; ties to PCB ground plane under exposed pad. |
| 7 VREG | Internal Regulator Output | 5.1 V ±0.2 V regulated supply for biasing external circuitry; requires 0.1 µF decoupling to GND. |
| 8 DISC1 | IN Port Discharge Enable | Active-high control for discharging IN port to GND via internal 105 Ω switch. |
| 9 DISC2 | OUT Port Discharge Enable | Active-high control for discharging OUT port to GND via internal 105 Ω switch. |
| 10 FAULTB | Fault Indicator | Open-drain active-low output; sinks 10 mA; requires external pull-up for system interrupt signaling. |
| 11 IMON | Current Monitor Output | Analog voltage proportional to load current (10 µA/A gain); used with RIMON to generate 0–4.5 V signal. |
| 12 DV/DT | Ramp Rate Control | Connects to capacitor setting slew rate; 1 µA sourcing current defines dV/dt slope with gain of 12 V/V. |
| 13 ILIM | Current Limit Set | Resistor-to-GND sets overcurrent threshold (e.g., 33.3 kΩ → 3 A); 27–200 kΩ range supported. |
| 14 VLIM | Voltage Limit Set | Resistor-to-GND sets input overvoltage threshold (51–270 kΩ → 6–24.5 V range). |
| 15, 16, 17 OUT | Power Output | High-current output nodes; paralleled for 3.5 A continuous rating; connect to downstream USB-C port or load. |
| 18 (EP) SRC | Common Source | Exposed thermal pad; must be soldered to PCB copper pour-no electrical connection required. |
Key Features
| Feature | Design Value |
|---|---|
| USB PD 3.0 Fast Role Swap | Hardware-accelerated role reversal with ≤60 µs VOUT turn-on delay and synchronized DISC1/DISC2 activation. |
| Programmable dV/dt Ramp | Adjustable output voltage slew rate via external capacitor eliminates inrush current spikes into large capacitive loads (e.g., 10 µF ports). |
| Dual Independent Port Discharge | Separate DISC1/DISC2 pins allow selective or simultaneous discharge of IN/OUT ports to meet USB PD spec discharge timing (<1 s). |
| Comprehensive Fault Protection | Five-layer protection: UVLO, OVP, OCP, RVP (2 µs response), OTP (165 °C shutdown with 20 °C hysteresis). |
| AEC-Q100 Qualified | Qualified to Grade 1 (–40 °C to +125 °C), PPAP-capable, manufactured in IATF 16949 facilities-enables automotive infotainment and ADAS power rail use. |
Applications
| USB-C Docking Station | Automotive Infotainment Hub |
|---|---|
|
Use Scenario: Power delivery to multiple peripherals (HDMI, USB-A, Ethernet) from a single USB-C host port. IC Role / Device Role / Timing Role: High-side power switch managing 20 V/3 A output with fast role swap during host-peripheral role negotiation. Use Value: Eliminates need for discrete OVP, discharge FETs, and current sense amplifiers-reducing BOM count by ≥4 components. |
Use Scenario: Providing isolated, protected 12 V power to USB-C ports in vehicle head units or rear-seat entertainment systems. IC Role / Device Role / Timing Role: AEC-Q100-compliant power switch enabling hot-plug USB-C accessories while meeting automotive transient immunity and thermal safety standards. Use Value: Integrated reverse-voltage blocking prevents battery drain during ignition-off; 125 °C junction rating ensures operation in under-dash environments. |
| Industrial USB-C Hub | Server Rack Power Management |
|
Use Scenario: Powering field-replaceable modules (e.g., sensors, comms cards) via ruggedized USB-C interfaces in factory automation equipment. IC Role / Device Role / Timing Role: Robust hot-swap controller with 2 µs short-circuit response and 7 ms fault blanking to withstand ESD and cable-connect transients. Use Value: Prevents system reset during hot insertion; programmable OVP protects against miswired 24 V industrial supplies. |
Use Scenario: Managing redundant 12 V power paths to server backplanes with automatic failover and fault isolation. IC Role / Device Role / Timing Role: Dual-port discharge and precise current limiting enable controlled power sequencing across multiple blade slots. Use Value: Reduces inrush-induced voltage droop on shared 12 V rails; IMON output feeds BMC for real-time load monitoring and predictive maintenance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB PD power switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS25750 (Texas Instruments) | Integrated USB PD controller + MCU; supports full PD 3.1 negotiation; no external VLIM/ILIM resistors needed. | Requires firmware development; targets full PD sink/source implementations-not simple high-side switch replacement. | Select when full PD policy engine and USB-C CC communication are required; not suitable for fixed-function hot-swap only. |
| RTQ2133GSP (Richtek) | 36 V/4 A rating; lower RDS(ON) (18 mΩ); lacks FRS pin and AEC-Q100 qualification. | Optimized for high-power computing docks but not certified for automotive temperature or reliability requirements. | Choose for higher current or lower conduction loss where automotive qualification and USB PD role swap are not mandatory. |
Compared with TPS25750 and RTQ2133GSP, the DPS1133FIAQ delivers optimal balance of USB PD 3.0 role-swap compliance, AEC-Q100 readiness, and analog-programmable protection-making it ideal for cost-sensitive, high-reliability USB-C power switching without embedded policy engine overhead.
Availability
DPS1133FIAQ is available at Aetrix Electronics and suitable for USB-C docking stations, automotive infotainment hubs, and industrial USB-C hubs requiring stable component supply, long-term lifecycle assurance, and automotive-grade traceability.
Supply support for DPS1133FIAQ 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
Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal ICs, with leadership in power management, protection, and interface solutions.
The DPS1133FIAQ belongs to Diodes' USB Power Delivery and Hot-Swap Power Switch product line, engineered specifically for robust, standards-compliant power control in USB Type-C® systems with demanding thermal and reliability requirements.
FAQ
What is the maximum continuous output current supported by the DPS1133FIAQ?
The DPS1133FIAQ supports 3.5 A continuous output current (IOUT) per the Recommended Operating Conditions table. This rating assumes proper PCB thermal design (2 oz copper, 1" × 1" pad) and ambient temperature ≤ +85 °C. At full 24 V input and 3.5 A load, power dissipation remains within the 1.7 W limit due to its 30 mΩ RDS(ON).
How does the Fast Role Swap (FRS) function interact with the DISC1 and DISC2 pins?
When FRS is asserted high, the DPS1133FIAQ automatically activates both DISC1 and DISC2 simultaneously to discharge IN and OUT ports in coordination-meeting USB PD 3.0 v1.0a role-swap timing. Manual control of DISC1/DISC2 remains available when FRS is inactive, enabling independent port discharge for non-role-swap scenarios like safe hot-unplug.
Can the DPS1133FIAQ be used without connecting the VREG pin?
No. The VREG pin supplies regulated 5.1 V to internal circuitry and must be decoupled with a 0.1 µF capacitor to GND. Leaving VREG unconnected or undecoupled risks unstable operation, especially during transient load events. External circuits may optionally use VREG as a clean bias supply, but it is not optional for device functionality.
What is the purpose of the SRC (exposed pad) connection, and how should it be handled on the PCB?
The SRC pad is the MOSFET source terminal and primary thermal path. It must be soldered directly to a solid PCB copper pour (minimum 1" × 1") with ≥6 thermal vias to inner ground planes. It is not an electrical signal-no trace routing or component connections are permitted. Improper SRC thermal management causes junction temperature exceedance and premature thermal shutdown.
DPS1133FIAQ-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 17-VFQFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Type:
- General Purpose
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- Low Side
- Output Type:
- N-Channel
- Interface:
- On/Off
- Voltage - Load:
- 0V ~ 24V
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 24V
- Current - Output (Max):
- 3.5A
- Rds On (Typ):
- 30mOhm
- Input Type:
- Non-Inverting
- Features:
- Load Discharge, Status Flag
- Fault Protection:
- Current Limiting (Adjustable), Over Temperature, Over Voltage, Reverse Current, UVLO
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- V-QFN4040-17
DPS1133FIAQ-13 FAQ
1.How can I place an order for DPS1133FIAQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DPS1133FIAQ-13 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 DPS1133FIAQ-13 reliable?
The price and inventory of DPS1133FIAQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DPS1133FIAQ-13 is usually 5 days.
3.What payment methods are accepted for DPS1133FIAQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DPS1133FIAQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DPS1133FIAQ-13?
DPS1133FIAQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DPS1133FIAQ-13 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 DPS1133FIAQ-13?
For technical support, including DPS1133FIAQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DPS1133FIAQ-13 requirements.
6.How does Aetrix verify that DPS1133FIAQ-13 is sourced from the original manufacturer or authorized distributors?
All DPS1133FIAQ-13 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 DPS1133FIAQ-13 meets industry standards.
7.What is the process for return or replacement of DPS1133FIAQ-13?
All DPS1133FIAQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with DPS1133FIAQ-13, 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 DPS1133FIAQ-13 part is unused and in its original packaging.
Return procedure for DPS1133FIAQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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