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NXP Semiconductors MC20XS4200DFKR2
- Part No.:
- MC20XS4200DFKR2
- Manufacturer:
- NXP Semiconductors
- Package:
- 23-PowerQFN
- Datasheet:
-
MC20XS4200DFKR2.pdf
- Description:
- HIGH-SIDE SWITCH, 24V, DUAL 20MO
- Quantity:
- Payment:
- Shipping:
Inventory:1,478
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Product details
Overview
MC20XS4200DFKR2 from NXP Semiconductors is a dual 24 V, 20 mΩ high-side switch IC designed for robust load control in truck, bus, and industrial systems. It integrates two independently controllable SMARTMOS power switches, 16-bit SPI interface (up to 8 MHz), programmable slew rates, dynamic overcurrent threshold profiling, and fail-safe operation mode - enabling precise, protected driving of bulbs, solenoids, and DC motors.
For engineers reviewing the MC20XS4200DFKR2 datasheet, MC20XS4200DFKR2 pinout, MC20XS4200DFKR2 application, or MC20XS4200DFKR2 equivalent, key selection considerations include its 4.4 A per-channel steady-state current rating, -32 V reverse battery tolerance (Version D), openload detection in both ON/OFF states (7.0 mA typ.), and autonomous operation via internal PWM clock - critical for automotive ECU and industrial PLC designs requiring functional safety and EMC resilience.
Technical Context
The MC20XS4200DFKR2 implements dual independent high-side power stages with integrated gate drivers, thermal shutdown (160–190 °C), and overvoltage/undervoltage protection (VPWR UV = 5.0–6.0 V, OV = 39–45.5 V). Its SMARTMOS process enables low RDS(on) (20 mΩ @ 25 °C, 36 mΩ @ 150 °C) and built-in current sensing (CSR0 = 1/1500, CSR1 = 1/500) with ±10% compensated error at 3.0 A.
Control is executed via 16-bit SPI (3.3 V/5.0 V compatible) supporting configuration, diagnostics, and real-time fault reporting. Fail-safe mode activates on SPI communication loss while preserving channel controllability, and programmable slew rates (fast/medium/slow) reduce EMI during switching transitions - essential for meeting ISO 11452-2/ISO 7637-2 compliance in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RDS(on) per channel | 20 mΩ @ 25 °C, 36 mΩ @ 150 °C - ensures low conduction loss and thermal stability under full-load industrial conditions |
| Max continuous current | 4.4 A per channel - supports high-power solenoids and small DC motors without external heatsinking |
| Supply voltage range | 8.0–36 V (full spec), extended 6.0–58 V - accommodates wide automotive battery transients and industrial 24 V rail variations |
| SPI interface speed | Up to 8.0 MHz - enables fast register access and real-time diagnostics in time-critical control loops |
| Reverse battery tolerance | -32 V - protects against jump-start faults and negative transients in commercial vehicle applications |
| Openload detection | 7.0 mA typical in OFF state - reliably detects LED and high-impedance loads without false triggers |
| Fail-safe mode | Autonomous operation on SPI loss - maintains controlled output states and protection functions without MCU intervention |
Pinout & Package
MC20XS4200DFKR2 uses a 23-pin PQFN package (12 × 12 mm, Pb-free), with exposed thermal pad (pin 15) for enhanced heat dissipation. The package supports reflow soldering per JEDEC J-STD-020 and has RθJC = 0.32 °C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| HS0 / HS1 | Power Switch Outputs | High-side drain outputs connected directly to load; rated for -32 V to +58 V, support parallel operation |
| VPWR (pins 15, 18, 21) | Positive Power Supply | Main power input for MOSFETs and analog circuitry; internally tied, primary thermal path via pin 15 |
| CSNS | Current/Temperature Sense Output | Programmable analog output: current-proportional (CSR0/CSR1) or temperature-proportional (GND pin) |
| IN0 / IN1 | Direct Control Inputs | Hardware override inputs with internal pull-down; enable immediate channel ON/OFF without SPI |
| CSB / SCLK / SI / SO | SPI Interface Signals | Standard 4-wire SPI (active-low CSB, 8 MHz max); SO is push-pull, others use internal pull-down/up as specified |
| CONF0 / CONF1 | Overcurrent Profile Select | Hardware-selectable bulb vs. DC motor latched overcurrent handling; requires external pull-down resistors |
| FSB / FSOB | Fault Status Outputs | Open-drain active-low signals: FSB indicates fault mode, FSOB asserts in fail-safe mode |
| SYNC | Current Sense Sync Output | Active-low pulse synchronized to CSNS sampling - enables precise timing of external ADC capture |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent high-side switches | Each channel fully protected with overcurrent, short-circuit, overtemperature, and openload detection - eliminates need for discrete protection components |
| Programmable slew rate per channel | Three selectable rates (fast/medium/slow) reduce EMI emissions and prevent voltage overshoot on long harnesses |
| Dynamic overcurrent threshold profile | Adapts trip threshold during inrush to avoid nuisance shutdown while maintaining accurate load current tracking |
| Accurate current sensing | ±10% error after offset compensation at 3.0 A (CSR0), down to 50 mA minimum measurable load current |
| Fail-safe autonomous operation | Maintains configured output states and protection functions even during SPI communication failure - critical for ASIL-B systems |
Applications
| Truck Lighting Control | Industrial Solenoid Driver |
|---|---|
|
Use Scenario: Controlling headlamps, fog lamps, and turn signals in heavy-duty trucks with wide battery voltage swings and harsh EMI environments. IC Role / Device Role / Timing Role: Dual high-side switch providing isolated, protected 24 V power delivery with openload detection for LED arrays and filament bulbs. Use Value: Eliminates relay wear-out and contact bounce; -32 V reverse battery tolerance prevents field failures during jump starts. |
Use Scenario: Driving hydraulic or pneumatic solenoid valves in factory automation systems requiring precise ON/OFF timing and fault logging. IC Role / Device Role / Timing Role: High-current, diagnostic-enabled switch with programmable slew rate to suppress inductive kickback and meet IEC 61000-4-4 immunity. Use Value: Integrated current sensing enables real-time coil health monitoring; SPI diagnostics reduce PLC scan time versus discrete sense-resistor solutions. |
| Bus HVAC Blower Control | Off-Highway Equipment Motor Starter |
|
Use Scenario: Regulating multi-speed DC blower motors in coach/bus HVAC systems subject to vibration, temperature extremes, and ground loss. IC Role / Device Role / Timing Role: Dual-channel switch with independent PWM control and temperature-compensated current sensing for closed-loop speed regulation. Use Value: Bulb/DC motor overcurrent profiles prevent false trips during motor stall; fail-safe mode keeps fan running at last commanded speed if MCU fails. |
Use Scenario: Starting starter motors or auxiliary hydraulic pumps in construction/mining equipment where battery voltage drops below 6 V during cranking. IC Role / Device Role / Timing Role: High-reliability 24 V switch operating in extended 6.0–58 V range with undervoltage hysteresis (0.2–1.5 V) to avoid oscillation near brownout. Use Value: Extended mode guarantees thermal protection even at 6 V, preventing MOSFET destruction during cold-crank events. |
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 RDS(on), -32 V reverse battery, but fixed hardware/software overcurrent profile selection - no SPI-configurable profile | Preferred for cost-sensitive designs where bulb/motor profile is static and SPI bandwidth is constrained | Select when overcurrent behavior must be set at boot and not dynamically updated during runtime |
| MC24XS4200DFKR2 | Four-channel variant with identical per-channel specs, same -32 V rating, and extended 24 V system compatibility | Used in centralized body control modules requiring >2 switched loads in single-package footprint | Choose when board space is limited and ≥3 independent 24 V loads require coordinated diagnostics |
Compared with MC20XS4200BFKR2, MC20XS4200DFKR2 offers SPI-configurable overcurrent profiles for adaptive load handling; compared with MC24XS4200DFKR2, it provides lower channel count and reduced SPI register complexity - optimizing BOM cost and firmware overhead for dual-load applications.
Availability
MC20XS4200DFKR2 is available at Aetrix Electronics and suitable for truck lighting control, industrial solenoid actuation, and bus HVAC blower systems requiring stable component supply, automotive-grade reliability, and long-term lifecycle support.
Supply support for MC20XS4200DFKR2 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 functional safety.
The MC20XS4200DFKR2 belongs to NXP's SMARTMOS high-side switch product line, engineered specifically for 24 V commercial vehicle and industrial control systems demanding high integration, diagnostic richness, and ASIL-ready fault handling.
FAQ
What is the maximum continuous current rating per channel for the MC20XS4200DFKR2?
The MC20XS4200DFKR2 supports up to 4.4 A steady-state current per channel, validated across the full operating temperature range (-40 °C to +125 °C ambient) and VPWR supply (8.0–36 V), provided junction temperature remains ≤150 °C. Thermal design must account for RθJC = 0.32 °C/W and PCB copper area to sustain this rating continuously.
Does the MC20XS4200DFKR2 support openload detection for LED loads?
Yes, the MC20XS4200DFKR2 supports openload detection in both ON and OFF states, with a typical OFF-state threshold of 7.0 mA - specifically validated for LED applications. The device uses CSNS feedback and internal comparators to detect high-impedance faults without requiring external circuitry, even with low-current LED strings.
How does the fail-safe mode operate in the MC20XS4200DFKR2 when SPI communication is lost?
When SPI communication is lost, the MC20XS4200DFKR2 enters fail-safe mode: FSOB asserts low, but both HS0 and HS1 retain their last commanded state (ON/OFF), remain controllable via IN0/IN1 pins, and continue full protection (overcurrent, overtemperature, openload). This behavior ensures uninterrupted operation in safety-critical vehicle subsystems.
What is the reverse battery voltage rating for the MC20XS4200DFKR2?
The MC20XS4200DFKR2 (Version D) is rated for -32 V reverse battery voltage, exceeding standard automotive requirements. This protection is implemented via internal clamp structures on VPWR, HS0, and HS1 pins, allowing safe operation during jump-start faults or incorrect battery connection in truck and bus applications.
Can the slew rate be programmed independently for each channel in the MC20XS4200DFKR2?
Yes, the MC20XS4200DFKR2 supports individual slew rate programming per channel via SPI registers. Three settings (fast/medium/slow) are available for each HS0 and HS1 output, enabling optimized EMI performance and inductive load compatibility - for example, fast slew for bulbs, slow slew for solenoids to limit dI/dt-induced voltage spikes.
MC20XS4200DFKR2 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)
MC20XS4200DFKR2 FAQ
1.How can I place an order for MC20XS4200DFKR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC20XS4200DFKR2 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 MC20XS4200DFKR2 reliable?
The price and inventory of MC20XS4200DFKR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC20XS4200DFKR2 is usually 5 days.
3.What payment methods are accepted for MC20XS4200DFKR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC20XS4200DFKR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC20XS4200DFKR2?
MC20XS4200DFKR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC20XS4200DFKR2 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 MC20XS4200DFKR2?
For technical support, including MC20XS4200DFKR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC20XS4200DFKR2 requirements.
6.How does Aetrix verify that MC20XS4200DFKR2 is sourced from the original manufacturer or authorized distributors?
All MC20XS4200DFKR2 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 MC20XS4200DFKR2 meets industry standards.
7.What is the process for return or replacement of MC20XS4200DFKR2?
All MC20XS4200DFKR2 units undergo pre-shipment inspection (PSI). If there is an issue with MC20XS4200DFKR2, 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 MC20XS4200DFKR2 part is unused and in its original packaging.
Return procedure for MC20XS4200DFKR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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