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Analog Devices Inc./Maxim Integrated MAX22700DASA+
- Part No.:
- MAX22700DASA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Isolators - Gate Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX22700DASA+.pdf
- Description:
- DGTL ISO 3KV 1CH GATE DVR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:352
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Product details
Overview
MAX22700DASA+ from Analog Devices is a single-channel, differential-input, isolated gate driver optimized for SiC and GaN power transistors in high-frequency motor drives and PV inverters. It delivers 300kV/μs typical common-mode transient immunity (CMTI), 35ns propagation delay at +25°C, 2ns part-to-part delay matching at room temperature, and supports 20ns minimum pulse width with ≤2ns pulse-width distortion. Its GNDB output configuration enables precise B-side UVLO referencing to the transistor source.
For engineers reviewing the MAX22700DASA+ datasheet, MAX22700DASA+ pinout, MAX22700DASA+ application, or MAX22700DASA+ equivalent, this page provides verified technical context on ultra-high CMTI isolation performance, GNDB-referenced gate drive architecture, narrow SOIC package constraints, and design-critical timing parameters for SiC/GaN half-bridge control.
Technical Context
The MAX22700DASA+ implements unidirectional digital galvanic isolation using Maxim's proprietary process, supporting 3kVRMS withstand voltage (60s) and 600VRMS working voltage in its 8-pin narrow SOIC package. Its differential input stage (INP/INN) rejects common-mode noise, while the GNDB pin serves as the reference ground for VDDB and VSSB, enabling direct connection to the power transistor source.
Propagation delay matching (≤2ns at +25°C, ≤5ns over –40°C to +125°C) and 20ns minimum pulse width capability reduce dead-time requirements in high-switching-frequency topologies. The output driver features parallel pMOS/nMOS pull-up (RDSON_H ≤ 4.5Ω) and nMOS pulldown (RDSON_L ≤ 1.25Ω), with active pulldown ensuring safe turn-off during UVLO or thermal shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CMTI | 300kV/μs typical - maintains signal integrity under fast dv/dt transients in SiC/GaN inverter legs |
| Propagation Delay (tPLH/tPHL) | 34–39ns at –40°C to +125°C - enables precise timing control in >100kHz switching applications |
| Part-to-Part Delay Matching | ≤2ns at +25°C - reduces inter-device timing skew in multi-phase motor drives |
| Minimum Pulse Width | 20ns - supports PWM frequencies up to 1MHz without pulse dropout |
| Isolation Withstand Voltage (VISO) | 3kVRMS for 60s (narrow SOIC) - meets reinforced insulation requirements per UL1577 |
| Output Driver RDSON (Low-Side) | 1.25Ω max - limits conduction loss and self-heating during high-current gate charging |
| UVLO Threshold (A-side) | VUVLOAP = 2.69–2.95V - ensures reliable startup and brownout protection for 3.3V/5V logic domains |
Pinout & Package
The MAX22700DASA+ is housed in an 8-pin narrow-body SOIC package (S8MS+23 outline, 4mm creepage/clearance, CTI > 600, Group I material) with RoHS-compliant lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VDDA | A-side positive supply | 3–5.5V logic domain input; bypassed with 1nF || 0.1μF || 1μF ceramics to GNDA |
| 2 - INP | Differential non-inverting input | Weak internal pulldown; paired with INN for noise-immune PWM reception |
| 3 - INN | Differential inverting input | Weak internal pullup to VDDA; rejects common-mode glitches per Figure 3 |
| 4 - GNDA | A-side ground reference | Return path for VDDA and logic inputs; galvanically isolated from B-side grounds |
| 5 - VDDB | B-side positive supply | 13–28V gate drive rail; bypassed with 1nF || 0.1μF || 1μF + 22μF to VSSB |
| 6 - OUT | Gate driver output | Push-pull output referenced to GNDB; drives SiC/GaN gate capacitance directly |
| 7 - GNDB | B-side gate reference | Source-referenced ground for VDDB/VSSB; sets B-side UVLO threshold point |
| 8 - VSSB | B-side negative supply | –16V to 0V relative to GNDB; enables negative gate bias for enhanced SiC turn-off |
Key Features
| Feature | Design Value |
|---|---|
| Differential input with glitch filtering | INP/INN pair holds previous output state during input transients, preventing false gate turn-on |
| GNDB-referenced output architecture | Direct source connection eliminates floating ground errors and enables accurate B-side UVLO |
| Ultra-tight propagation delay matching | ≤2ns matching at +25°C reduces dead-time uncertainty in multi-driver systems |
| Active pulldown safety function | Forces OUT low during A/B-side UVLO or thermal shutdown, ensuring fail-safe transistor turn-off |
| High CMTI with robust isolation barrier | 300kV/μs immunity and 3kVRMS/60s rating support operation in noisy high-dv/dt environments |
Applications
| Industrial Motor Drives | Photovoltaic Inverters |
|---|---|
Use Scenario: High-efficiency 20–100kHz SiC-based three-phase motor drives for HVAC and industrial automation. IC Role / Device Role / Timing Role: Isolated gate driver providing differential PWM interface and GNDB-referenced output to control upper/lower IGBT/SiC switches in half-bridge modules. Use Value: 20ns minimum pulse width and ≤2ns delay matching enable <100ns dead-time optimization, reducing conduction losses by up to 8% versus legacy drivers. |
Use Scenario: String-level MPPT converters with bidirectional SiC MOSFETs operating at 80–120kHz. IC Role / Device Role / Timing Role: Single-channel isolated driver delivering precise timing and high CMTI for DC-link switching in transformerless grid-tied inverters. Use Value: 300kV/μs CMTI prevents mis-triggering during lightning-induced transients, improving system uptime in outdoor solar installations. |
| Uninterruptible Power Supplies | Electric Vehicle Onboard Chargers |
Use Scenario: High-density 10–25kW UPS inverters using GaN HEMTs in LLC resonant topologies. IC Role / Device Role / Timing Role: Differential-input isolated driver managing fast-switching GaN gates with tight timing control and source-referenced UVLO. Use Value: GNDB pin allows direct source tie, eliminating level-shifter components and reducing PCB layout complexity in compact UPS designs. |
Use Scenario: Bidirectional OBCs with dual-active-bridge (DAB) topology requiring synchronized SiC gate control across primary/secondary sides. IC Role / Device Role / Timing Role: Isolated gate driver providing matched propagation delay and 3kVRMS isolation between HV DC-link and LV control domain. Use Value: 5ns max delay matching over –40°C to +125°C ensures consistent phase alignment across temperature, maintaining ZVS efficiency in DAB converters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si8271BD-IS | Differential input, 5kVRMS wide SOIC, 200kV/μs CMTI, no GNDB pin - uses VSSB-referenced UVLO | Lacks source-referenced GNDB; requires external level-shifting for source-synchronous UVLO in SiC designs | Choose when wider isolation rating is prioritized over source-referenced B-side control |
| ADUM4135BRWZ | Single-ended input, 5kVRMS wide SOIC, 150kV/μs CMTI, integrated Miller clamp - no adjustable UVLO option | Offers Miller clamp but no GNDB or differential input; UVLO fixed at 12V/13.3V thresholds | Prefer for designs needing active Miller clamping over differential noise immunity or GNDB flexibility |
Compared with Si8271BD-IS and ADUM4135BRWZ, the MAX22700DASA+ uniquely combines differential input noise rejection, GNDB-referenced gate drive, and 300kV/μs CMTI in a narrow SOIC footprint-enabling compact, high-reliability SiC/GaN control where source-synchronous UVLO and minimal dead time are critical.
Availability
MAX22700DASA+ is available at Aetrix Electronics and suitable for industrial motor drives, photovoltaic inverters, and uninterruptible power supplies requiring stable component supply, long-term lifecycle support, and traceable sourcing for high-reliability power electronics.
Supply support for MAX22700DASA+ 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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, and power conversion markets.
The MAX22700DASA+ belongs to the MAX22700–MAX22702 family of ultra-high CMTI isolated gate drivers, engineered specifically for next-generation SiC and GaN power systems demanding sub-ns timing accuracy, robust noise immunity, and source-referenced gate control.
FAQ
What is the isolation rating and certification status of the MAX22700DASA+?
The MAX22700DASA+ is certified to UL1577 and CSA Bulletin 5A with a 3kVRMS withstand voltage rating for 60 seconds in its narrow SOIC package. It achieves 600VRMS maximum working isolation voltage (VIOWM) and has passed surge testing to ±5kV (1.2/50μs waveform) between GNDA and VSSB. VDE 0884-11 certification is pending for wide-body variants only; the MAX22700DASA+ is not VDE-certified.
How does the GNDB pin function in the MAX22700DASA+ and why is it important for SiC/GaN designs?
The GNDB pin in the MAX22700DASA+ serves as the reference ground for both VDDB and VSSB, enabling direct connection to the source terminal of the driven SiC or GaN transistor. This eliminates floating ground errors and allows B-side UVLO to be precisely referenced to the transistor source-critical for reliable turn-off under negative gate bias and for avoiding false triggering during high-dv/dt transitions.
What are the key timing specifications of the MAX22700DASA+ and how do they impact high-frequency inverter design?
The MAX22700DASA+ delivers 34–39ns propagation delay (tPLH/tPHL), ≤2ns part-to-part delay matching at +25°C, ≤5ns over –40°C to +125°C, and 20ns minimum pulse width. These specs allow dead-time reduction to <100ns in 100kHz+ SiC inverters, minimizing conduction losses while maintaining shoot-through immunity-directly improving system efficiency and thermal performance.
Does the MAX22700DASA+ support both single-ended and differential input configurations?
No-the MAX22700DASA+ is a "D" variant and supports differential input only via INP and INN pins. It does not include the EN or IN pins found in "E" versions like MAX22700EASA+. The differential architecture provides inherent common-mode noise rejection, making it ideal for electrically noisy motor drive and inverter environments where signal integrity is critical.
What is the recommended power supply decoupling for the MAX22700DASA+ and why is it structured that way?
For the MAX22700DASA+, VDDA requires parallel 1nF, 0.1μF, and 1μF ceramic capacitors placed close to pins 1 and 4 (VDDA/GNDA); VDDB requires the same ceramic stack plus a bulk 22μF capacitor between pins 5 and 8 (VDDB/VSSB). This multi-tier decoupling suppresses high-frequency switching noise (ceramics) and sustains gate drive current during fast transitions (bulk cap), preventing UVLO faults and output instability.
MAX22700DASA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Number of Channels:
- 1
- Voltage - Isolation:
- 3000Vrms
- Common Mode Transient Immunity (Min):
- 300kV/µs (Typ)
- Propagation Delay tpLH / tpHL (Max):
- 36ns, 36ns
- Pulse Width Distortion (Max):
- 2ns
- Rise / Fall Time (Typ):
- 3.6ns, 1.8ns (Max)
- Current - Output High, Low:
- 2.35A, 3.7A
- Current - Peak Output:
- 2.35A, 3.7A
- Voltage - Forward (Vf) (Typ):
- -
- Current - DC Forward (If) (Max):
- -
- Voltage - Output Supply:
- 13V ~ 36V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
- Approval Agency:
- CSA, cUL, UL
MAX22700DASA+ FAQ
1.How can I place an order for MAX22700DASA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX22700DASA+ 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 MAX22700DASA+ reliable?
The price and inventory of MAX22700DASA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX22700DASA+ is usually 5 days.
3.What payment methods are accepted for MAX22700DASA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX22700DASA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX22700DASA+?
MAX22700DASA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX22700DASA+ 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 MAX22700DASA+?
For technical support, including MAX22700DASA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX22700DASA+ requirements.
6.How does Aetrix verify that MAX22700DASA+ is sourced from the original manufacturer or authorized distributors?
All MAX22700DASA+ 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 MAX22700DASA+ meets industry standards.
7.What is the process for return or replacement of MAX22700DASA+?
All MAX22700DASA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX22700DASA+, 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 MAX22700DASA+ part is unused and in its original packaging.
Return procedure for MAX22700DASA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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