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NXP Semiconductors MC20XS4200BDFKR2
- Part No.:
- MC20XS4200BDFKR2
- Manufacturer:
- NXP Semiconductors
- Package:
- 23-PowerQFN
- Datasheet:
-
MC20XS4200BDFKR2.pdf
- Description:
- HIGH-SIDE SWITCH, 24V, DUAL 20MO
- Quantity:
- Payment:
- Shipping:
Inventory:1,403
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Product details
Overview
MC20XS4200BDFKR2 from NXP Semiconductors is a dual-channel 24 V high-side switch IC with integrated SMARTMOS technology, designed for truck, bus, and industrial load control. It delivers ≤20 mΩ RDS(on) at 25 °C, supports up to 4.4 A steady-state current per channel, and features SPI-based diagnostics, programmable slew rates, and dynamic overcurrent threshold profiling for bulb and DC motor loads.
For engineers reviewing the MC20XS4200BDFKR2 datasheet, MC20XS4200BDFKR2 pinout, MC20XS4200BDFKR2 application, or MC20XS4200BDFKR2 equivalent, this page provides verified technical context, validated pin functions, confirmed automotive-grade protection features (reverse battery to –32 V, extended VPWR range 6–58 V), and real-world use cases in lighting and actuation systems requiring fail-safe operation and accurate current sensing.
Technical Context
The MC20XS4200BDFKR2 implements two independent high-side power switches with fully autonomous operation enabled by an internal calibratable oscillator and configurable PWM clock inputs (IN0/IN1 or external CLOCK). Each channel integrates dedicated gate drivers, drain-to-source clamping, and separate overtemperature prewarning/shutdown circuitry.
Its functional architecture includes a dual-path current sense analog MUX feeding CSNS, programmable openload detection in both ON/OFF states (7.0 mA typ. for LED), and Fail-safe mode activation upon SPI communication loss-retaining controllability while enforcing protective latching. The device uses hardware + software-configurable overcurrent profiles and supports daisy-chained SPI for multi-device systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RDS(on) max @ 25 °C | 20 mΩ - Enables low conduction loss for 4.4 A continuous loads; reduces thermal stress in compact PCB layouts. |
| VPWR operating range | 6.0–58 V - Supports full automotive transients including load dump (58 V) and reverse battery (–32 V), eliminating need for external protection. |
| SPI interface | 3.3/5.0 V compatible, up to 8 MHz - Allows direct connection to common microcontrollers without level-shifting; enables real-time configuration and fault reporting. |
| Overcurrent detection | Bulb- and DC motor-specific profiles via CONF0/CONF1 pins - Prevents nuisance tripping during lamp inrush or motor stall while maintaining fast short-circuit response. |
| Current sensing accuracy | ±10% error after offset compensation (CSR0, 3.0 A) - Enables reliable closed-loop load monitoring for predictive maintenance and energy metering. |
| Thermal shutdown | 175 °C typical junction temperature - Protects MOSFETs under sustained overload; combined with RθJC = 0.32 °C/W for efficient heatsinking via VPWR flag. |
| Openload detection | 7.0 mA typical in ON state - Detects LED open-circuit faults without requiring additional sense resistors or external circuitry. |
Pinout & Package
MC20XS4200BDFKR2 is housed in a 23-pin PQFN package (12 × 12 mm) with exposed thermal pad (pin 15, VPWR). The package supports high-power dissipation and meets JEDEC J-STD-020 Pb-free reflow requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| HS0 / HS1 (pins 19, 20) | Power switch outputs | Direct connection points to loads; internally tied to VPWR via low-RDS(on) MOSFETs; require external flyback diodes for inductive loads. |
| CSNS (pin 1) | Current/temperature monitor output | Provides proportional current (1/1500 or 1/500 ratio) or GND-pin temperature voltage; requires external pull-down resistor for proper biasing. |
| IN0 / IN1 (pins 2, 3) | Direct control inputs | Enable manual override of SPI control; internal pull-down ensures safe OFF state on power-up or MCU reset. |
| CONF0 / CONF1 (pins 5, 6) | Overcurrent profile selection | Set bulb vs. DC motor detection thresholds; external pull-down resistors define logic state; no floating inputs allowed. |
| FSOB (pin 4) | Fail-safe status output | Active-low open-drain signal indicating entry into Fail-safe mode; requires external VPWR pull-up for system-level fault indication. |
| CSB / SCLK / SI / SO (pins 10–13, 16) | SPI interface | Standard 4-wire SPI with chip select, clock, data in/out; SO is push-pull; all logic pins tolerate 3.3/5.0 V and include internal biasing. |
| VPWR (pins 15, 18, 21) | Main power supply & thermal path | Internally connected high-current supply rails; pin 15 is primary thermal pad-must be soldered to large copper area for thermal management. |
| GND (pins 14, 17, 22) | Logic/analog ground reference | Three dedicated ground pins minimize noise coupling between digital, analog, and power domains; must be star-connected on PCB. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent high-side switches | Enables simultaneous or staggered control of two critical loads (e.g., headlight + wiper motor) with isolated fault handling and diagnostics. |
| Programmable slew rate per channel | Reduces EMI emissions during switching transitions; selectable via SPI to optimize EMC performance without sacrificing speed. |
| Dynamic overcurrent threshold profile | Tracks load current in real time to distinguish inrush (bulb/motor) from true short-circuit-prevents false shutdowns while ensuring safety. |
| Fail-safe mode on SPI loss | Maintains defined output states and protection functions even if MCU communication fails-critical for ASIL-B–compatible systems. |
| Openload detection in ON/OFF states | Identifies broken wiring or disconnected LEDs without extra components; supports both traditional bulbs and modern solid-state lighting. |
| Reverse battery protection to –32 V | Eliminates need for external series diodes or TVS arrays in harsh vehicle environments-reducing BOM cost and board space. |
Applications
| Truck Lighting Control | Industrial Solenoid Actuation |
|---|---|
|
Use Scenario: Controlling high-intensity LED headlights and fog lamps in heavy-duty commercial vehicles subject to wide voltage transients and vibration. IC Role / Device Role / Timing Role: Dual high-side switch providing precise ON/OFF timing, current monitoring, and open-circuit fault detection for each lamp string. Use Value: Eliminates relay wear-out and contact bounce; enables diagnostic logging of lamp failures via SPI; withstands –32 V reverse battery events. |
Use Scenario: Driving 24 V solenoid valves in automated manufacturing equipment where precise energization timing and coil health monitoring are required. IC Role / Device Role / Timing Role: High-side driver delivering controlled turn-on slew rate and accurate current sensing to detect partial coil shorts or degradations. Use Value: Prevents valve stiction or incomplete actuation by identifying marginal loads before failure; supports predictive maintenance via current trend analysis. |
| Bus HVAC Blower Control | Off-Highway Equipment Motor Control |
|
Use Scenario: Managing multi-speed DC blower motors in coach buses, where PWM-controlled speed regulation and thermal protection are essential. IC Role / Device Role / Timing Role: Dual-channel switch enabling independent control of main and auxiliary blowers, with programmable overcurrent profiles for motor stall detection. Use Value: Replaces discrete MOSFET + driver + protection IC solutions; reduces layout complexity and improves reliability in high-temperature cabin environments. |
Use Scenario: Controlling hydraulic pump motors and steering assist actuators in construction and agricultural machinery operating across extreme ambient temperatures. IC Role / Device Role / Timing Role: Robust high-side switch delivering 4.4 A per channel with extended VPWR range (6–58 V) and junction temperature rating up to 150 °C. Use Value: Ensures uninterrupted operation during cold-cranking (6 V) and load-dump events (58 V); thermal shutdown prevents damage during prolonged overload. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC20XS4200BFKR2 | Same package and pinout; lacks accelerated slew rate option (BD variant has faster SR for reduced switching losses). | Not recommended for new designs requiring lowest EMI or highest efficiency in high-frequency PWM operation. | Select MC20XS4200BDFKR2 when optimizing for EMC compliance or thermal performance in dense layouts. |
| MC20XS4200DFKR2 | Shares BD's –32 V reverse battery rating but uses hardware-only overcurrent profile selection (no SPI configurability). | Limited flexibility in dynamically adapting protection behavior to changing load conditions or firmware updates. | Choose MC20XS4200BDFKR2 when field-upgradable diagnostics and adaptive fault handling are required. |
Compared with MC20XS4200BFKR2 and MC20XS4200DFKR2, the MC20XS4200BDFKR2 uniquely combines –32 V reverse battery tolerance, software-configurable overcurrent profiles, and accelerated slew rate-making it the optimal choice for next-generation vehicle ECUs demanding both robustness and functional flexibility.
Availability
MC20XS4200BDFKR2 is available at Aetrix Electronics and suitable for truck lighting control, industrial solenoid actuation, and off-highway equipment motor control requiring stable component supply, long-term lifecycle support, and automotive-grade reliability.
Supply support for MC20XS4200BDFKR2 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
NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in power management and automotive-grade IC design.
The MC20XS4200BDFKR2 belongs to NXP's SMARTMOS high-side switch product line, engineered specifically for 24 V commercial vehicle and industrial systems requiring high integration, comprehensive diagnostics, and extended environmental resilience.
FAQ
What is the maximum continuous current rating per channel for the MC20XS4200BDFKR2?
The MC20XS4200BDFKR2 supports up to 4.4 A steady-state current per channel, provided the junction temperature remains within its rated limit of 150 °C. This rating assumes proper PCB thermal design using the VPWR thermal pad (RθJC = 0.32 °C/W) and accounts for RDS(on) drift at elevated temperatures (36 mΩ at 150 °C).
Does the MC20XS4200BDFKR2 support reverse battery protection, and to what voltage level?
Yes, the MC20XS4200BDFKR2 supports reverse battery protection down to –32 V, as specified for version B/D devices. This eliminates the need for external reverse-polarity protection diodes in truck and bus applications, reducing system cost and improving efficiency compared to legacy solutions.
How does the MC20XS4200BDFKR2 handle communication loss with the host microcontroller?
Upon loss of SPI communication, the MC20XS4200BDFKR2 automatically enters Fail-safe mode-asserting FSOB (active-low) while maintaining configured output states and full protection functionality (overcurrent, overtemperature, openload). This ensures continued safe operation without MCU supervision.
Can the MC20XS4200BDFKR2 detect open-circuit faults in LED loads?
Yes, the MC20XS4200BDFKR2 provides openload detection in both ON and OFF states, with a typical threshold of 7.0 mA in ON state-specifically optimized for LED applications. This capability is enabled via the CSNS pin and requires no external components beyond the mandatory pull-down resistor.
What are the key differences between the MC20XS4200BDFKR2 and the base MC20XS4200FKR2 variant?
The MC20XS4200BDFKR2 adds –32 V reverse battery tolerance (vs. –28 V), hardware + software-configurable overcurrent profiles (vs. hardware-only), and accelerated slew rate (vs. standard) compared to the MC20XS4200FKR2. These enhancements improve EMC performance, design flexibility, and ruggedness for new automotive and industrial platforms.
MC20XS4200BDFKR2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 23-PowerQFN
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Type:
- General Purpose
- Number of Outputs:
- 2
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- N-Channel
- Interface:
- SPI
- Voltage - Load:
- 8V ~ 36V
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 5.5V
- Current - Output (Max):
- 4.4A
- Rds On (Typ):
- 20mOhm (Max)
- Input Type:
- Non-Inverting
- Features:
- Internal PWM, Slew Rate Controlled, Watchdog Timer
- Fault Protection:
- Current Limiting (Adjustable), Over Temperature, Over Voltage, Short Circuit, UVLO
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 23-PQFN (12x12)
MC20XS4200BDFKR2 FAQ
1.How can I place an order for MC20XS4200BDFKR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC20XS4200BDFKR2 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 MC20XS4200BDFKR2 reliable?
The price and inventory of MC20XS4200BDFKR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC20XS4200BDFKR2 is usually 5 days.
3.What payment methods are accepted for MC20XS4200BDFKR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC20XS4200BDFKR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC20XS4200BDFKR2?
MC20XS4200BDFKR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC20XS4200BDFKR2 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 MC20XS4200BDFKR2?
For technical support, including MC20XS4200BDFKR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC20XS4200BDFKR2 requirements.
6.How does Aetrix verify that MC20XS4200BDFKR2 is sourced from the original manufacturer or authorized distributors?
All MC20XS4200BDFKR2 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 MC20XS4200BDFKR2 meets industry standards.
7.What is the process for return or replacement of MC20XS4200BDFKR2?
All MC20XS4200BDFKR2 units undergo pre-shipment inspection (PSI). If there is an issue with MC20XS4200BDFKR2, 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 MC20XS4200BDFKR2 part is unused and in its original packaging.
Return procedure for MC20XS4200BDFKR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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