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Monolithic Power Systems Inc. MID02W0303AGY-3R-Z
- Part No.:
- MID02W0303AGY-3R-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- DC DC Converters
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MID02W0303AGY-3R-Z.pdf
- Description:
- 0.25W, 3KVDC, REGULATED, ISOLATE
- Quantity:
- Payment:
- Shipping:
Inventory:2,968
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Product details
Overview
MID02W0303AGY-3R-Z from Monolithic Power Systems is a regulated, isolated 3.3V-output DC/DC converter supporting 3V–3.6V input, delivering up to 0.25W with ±0.2% load regulation and 3kVDC isolation. It integrates power MOSFET, transformer, and feedback circuit in a single SOICW-16 package, targeting isolated bias supply for industrial RS-485/CAN interfaces and digital isolators.
For engineers reviewing the MID02W0303AGY-3R-Z datasheet, MID02W0303AGY-3R-Z pinout, MID02W0303AGY-3R-Z application, or MID02W0303AGY-3R-Z equivalent, key selection criteria include certified 3kVDC isolation, -40°C to +125°C operation, integrated protection (SCP, OTP), CISPR32 Class B compliance, and minimal external component count (2×10μF + 2×0.1μF).
Technical Context
This monolithic isolated DC/DC converter uses an internal transformer-coupled topology with primary-side regulation via integrated feedback circuitry-no optocoupler or secondary-side sensing required. It employs fixed-frequency switching with internal soft-start (15ms) and hiccup-mode short-circuit protection.
The device separates primary (PGND1/SGND1/VIN) and secondary (PGND2/SGND2/VOUT) ground domains with 8mm creepage/clearance and 7pF input-to-output capacitance. Thermal shutdown activates at 160°C with 20°C hysteresis, and under-voltage lockout triggers at 2.61V rising threshold with 190mV hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3V to 3.6V - supports Li-ion battery and low-voltage industrial rails without pre-regulation |
| Output Voltage | 3.3V ±0.2% - tightly regulated for powering precision analog front-ends and logic interfaces |
| Isolation Voltage | 3kVDC - certified per UL1577 and IEC62368-1 for reinforced insulation in safety-critical systems |
| Output Power | 0.25W max - sufficient for biasing dual-channel digital isolators or RS-485 transceivers |
| Load Regulation | ±0.2% - ensures stable VOUT across 0–75mA load variation, critical for noise-sensitive receivers |
| Efficiency | 50% at full load - optimized for ultra-low-power isolated domains where thermal footprint dominates efficiency trade-offs |
| Operating Temp | -40°C to +125°C - qualified for under-hood automotive modules and industrial control cabinets |
Pinout & Package
Delivered in a low-profile, wide-body SOICW-16 package (10.3mm × 7.5mm × 2.3mm) with enhanced creepage and thermal pad compatibility. Pin layout enforces strict primary/secondary domain separation to maintain isolation integrity and EMI performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | PGND1 | Primary-side power ground - requires large copper area and multiple vias for thermal dissipation and low-impedance return path |
| 3, 4 | VIN | Input power terminal - connects to 3V–3.6V rail with local 10μF + 0.1μF decoupling to suppress switching noise |
| 5–8 | SGND1 | Primary-side signal ground - tied to PGND1 with wide trace to minimize ground bounce during switching |
| 9–12 | SGND2 | Secondary-side signal ground - connected to PGND2 via thin trace to limit EMI coupling across isolation barrier |
| 13, 14 | VOUT | Regulated 3.3V output - requires local 10μF + 0.1μF capacitors to meet ripple spec (<80mV) and transient response |
| 15, 16 | PGND2 | Secondary-side power ground - kept isolated from SGND2 plane to preserve isolation barrier integrity |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Transformer & MOSFET | Eliminates discrete magnetics and gate drivers - reduces BOM count by ≥7 components and PCB area by >40% |
| Hiccup-Mode SCP | Auto-recovery short-circuit protection with 150ms off-time - prevents thermal runaway while enabling self-clearing faults |
| CISPR32 Class B Compliance | Verified radiated emissions <40dBμV/m at 3m - enables direct use in EMC-sensitive telecom and industrial gateways without added filtering |
| Thermal Shutdown with Hysteresis | 160°C trip / 140°C recovery - protects silicon during sustained overload while avoiding oscillation near thermal limit |
| Low Input-to-Output Capacitance | 7pF - minimizes common-mode noise injection into secondary-side circuits, critical for high-speed digital isolators |
Applications
| Industrial RS-485 Transceivers | Isolated CAN Bus Nodes |
|---|---|
Use Scenario: Powering isolated RS-485 transceivers in factory-floor PLC I/O modules exposed to ground potential differences up to 2kV. IC Role / Device Role / Timing Role: Provides galvanically isolated 3.3V bias supply referenced to the transceiver's secondary-side ground, enabling common-mode voltage rejection. Use Value: Eliminates need for external isolated flyback controller + transformer, reducing solution size by 65% and qualifying for IEC61000-4-5 surge immunity up to 4kV. | Use Scenario: Supplying isolated power to CAN FD transceivers in electric vehicle battery management systems (BMS) requiring functional safety. IC Role / Device Role / Timing Role: Delivers clean, regulated 3.3V to the CAN PHY side while maintaining 3kVDC isolation between microcontroller and bus domains. Use Value: Meets ASIL-B requirements via UL1577 certification and supports CAN FD data rates up to 5Mbps without ground-loop induced jitter. |
| Digital Isolator Bias Rails | 5G Remote Radio Units (RRUs) |
Use Scenario: Generating isolated 3.3V supplies for dual-channel digital isolators used in motor drive current-sense feedback loops. IC Role / Device Role / Timing Role: Powers the secondary-side logic of SiO₂-based isolators, ensuring timing skew <1ns between channels under load transients. Use Value: Achieves ±0.2% load regulation and <80mV ripple - preserves ADC sampling accuracy and prevents false fault triggering in servo drives. | Use Scenario: Providing isolated auxiliary power to FPGA configuration memory and clock buffers in outdoor 5G RRUs operating at -40°C ambient. IC Role / Device Role / Timing Role: Supplies regulated 3.3V to low-noise LDOs feeding FPGA I/O banks, with thermal stability across full industrial temperature range. Use Value: Maintains output accuracy within ±0.15% from -40°C to +125°C - avoids FPGA configuration corruption and PLL unlock events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated DC/DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RECOM RxxP2xx Series | Through-hole DIP-24, 1.5kVDC isolation, 0.25W, no integrated feedback - requires external compensation | Higher board space, lower thermal density, but wider input range (4.5–5.5V) | Select when legacy through-hole assembly or higher input voltage is mandatory |
| Analog Devices ADuM6000 | SOIC-16, 2.5kVDC, 0.2W, integrated transformer but no OTP or hiccup SCP | Limited thermal robustness in continuous overload; fails open instead of recovering | Select only for lab-grade prototypes where thermal derating and manual fault clearing are acceptable |
Compared with RECOM RxxP2xx and ADuM6000, MID02W0303AGY-3R-Z delivers superior thermal resilience (OTP + hiccup SCP), tighter regulation (±0.2% vs ±1.5%), and verified CISPR32 Class B compliance - making it optimal for volume production in space-constrained, high-reliability industrial and telecom systems.
Availability
MID02W0303AGY-3R-Z is available at Aetrix Electronics and suitable for industrial automation systems, isolated sensor power supplies, and telecom network gateways requiring stable component supply with guaranteed long-term manufacturability.
Supply support for MID02W0303AGY-3R-Z 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
Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance power management ICs, with over two decades of leadership in integrated DC/DC conversion and motor control solutions.
The MID series targets compact, fully integrated isolated power solutions for industrial and communications infrastructure - designed to replace discrete flyback designs with certified safety, reduced design cycle time, and minimized EMI risk.
FAQ
What is the maximum allowable capacitive load on the VOUT pin?
The MID02W0303AGY-3R-Z supports up to 330μF capacitive load when paired with a 45Ω resistance load, as validated in electrical characterization. Exceeding this value may trigger hiccup mode during startup due to excessive inrush current, especially with low-ESR ceramic capacitors.
Does this part require external feedback resistors or compensation components?
No. The MID02W0303AGY-3R-Z integrates all regulation circuitry-including error amplifier, reference, and transformer feedback winding-within the SOICW-16 package. Only input/output bulk and high-frequency decoupling capacitors (10μF + 0.1μF each side) are required for stable operation.
How is isolation voltage tested and certified for this part?
Each MID02W0303AGY-3R-Z unit undergoes 100% production testing at 1.2×3kVDC (3.6kVDC) for 1 second. Qualification testing applies 3kVDC for 60 seconds per UL1577 and IEC62368-1 standards. Certification includes CB Scheme recognition and full test reports available upon request.
Can this converter operate with input voltage below 3V?
No. The under-voltage lockout (UVLO) rising threshold is 2.61V minimum, but guaranteed operation begins only at VIN ≥3V. Operation below 3V risks unstable regulation, increased ripple, and potential failure to sustain output under load - per recommended operating conditions in the datasheet.
What PCB layout practices are mandatory to achieve CISPR32 Class B compliance?
To meet CISPR32 Class B, the design must implement: (1) a 4-layer stackup with overlapping mid-layers forming a low-ESL Y-capacitor between PGND1 and GND2; (2) stitching vias around both ground planes; (3) CLC filter (two ferrite beads + ≥4.7μF capacitor) placed adjacent to VOUT/PGND2; and (4) thin-trace connection between SGND2 and PGND2 - all specified in Figure 2 and Figure 3 of the datasheet.
Is there a recommended evaluation board for this part?
Yes - the EV02W0303A-3-Y-00A evaluation board is specifically designed for MID02W0303AGY-3R-Z. It implements the certified CISPR32 Class B layout, includes thermal vias and optimized grounding, and supports full-load testing at 75mA with thermal resistance θJA = 47°C/W on a 51mm×51mm 2-layer PCB.
MID02W0303AGY-3R-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- MID02W0303A
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Isolated Module
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 3.6V
- Voltage - Output 1:
- 3.3V
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 75mA
- Power (Watts):
- 250 mW
- Voltage - Isolation:
- 3 kV
- Applications:
- ITE (Commercial)
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Efficiency:
- 50%
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
- Control Features:
- -
- Approval Agency:
- CB
- Standard Number:
- 62368-1
MID02W0303AGY-3R-Z FAQ
1.How can I place an order for MID02W0303AGY-3R-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MID02W0303AGY-3R-Z 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 MID02W0303AGY-3R-Z reliable?
The price and inventory of MID02W0303AGY-3R-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MID02W0303AGY-3R-Z is usually 5 days.
3.What payment methods are accepted for MID02W0303AGY-3R-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MID02W0303AGY-3R-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MID02W0303AGY-3R-Z?
MID02W0303AGY-3R-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MID02W0303AGY-3R-Z 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 MID02W0303AGY-3R-Z?
For technical support, including MID02W0303AGY-3R-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MID02W0303AGY-3R-Z requirements.
6.How does Aetrix verify that MID02W0303AGY-3R-Z is sourced from the original manufacturer or authorized distributors?
All MID02W0303AGY-3R-Z 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 MID02W0303AGY-3R-Z meets industry standards.
7.What is the process for return or replacement of MID02W0303AGY-3R-Z?
All MID02W0303AGY-3R-Z units undergo pre-shipment inspection (PSI). If there is an issue with MID02W0303AGY-3R-Z, 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 MID02W0303AGY-3R-Z part is unused and in its original packaging.
Return procedure for MID02W0303AGY-3R-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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