My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX22258AUD+T
- Part No.:
- MAX22258AUD+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Full Half-Bridge (H Bridge) Drivers
- Package:
- 14-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
MAX22258AUD+T.pdf
- Description:
- 36V H-BRIDGE TRANSFORMER DRIVER
- Quantity:
- Payment:
- Shipping:
Inventory:3,684
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX22258AUD+T from Analog Devices is a compact 36V H-bridge transformer driver IC for isolated power supplies, featuring resistor-programmable dead time (30ns–200ns), synchronous clock output (CLKO), and integrated overcurrent/thermal protection. It delivers up to 650mARMS drive current with 450kHz typical switching frequency and operates across -40°C to +125°C in industrial motor drive and PLC field supply applications.
For engineers reviewing the MAX22258AUD+T datasheet, MAX22258AUD+T pinout, MAX22258AUD+T application, or MAX22258AUD+T equivalent, this page provides verified technical context, real-world design meaning of key specs, validated alternative options, and supply-chain support for high-reliability isolated gate power designs.
Technical Context
The MAX22258AUD+T integrates a precision internal oscillator (±6% accuracy) and supports external clock synchronization via CLKI input, enabling EMI control and multi-device coordination. Its H-bridge driver stage uses break-before-make logic with adjustable dead time set by an external resistor on DTC pin, preventing cross-conduction in transformer primary windings.
It implements dual-stage protection: programmable overcurrent limiting (via ITH pin and RLIM resistor) with 2.4ms blanking and 76ms autoretry, plus thermal shutdown at +160°C with 10°C hysteresis. The FAULT pin asserts open-drain during fault events, while CLKO remains active even during EN disable or thermal shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 5V to 36V - enables direct integration into wide-input industrial DC rails without pre-regulation. |
| Switching Frequency | 450kHz typical (internal) or 200–2000kHz (external CLKI) - supports optimized transformer sizing and EMI spread-spectrum control. |
| Dead Time Range | 30ns to 200ns, resistor-adjustable via DTC pin - allows precise tuning for ZVS in LLC topologies or robust conduction loss trade-offs. |
| ST1/ST2 Current Limit | 0.2A to 1.1A, set by RLIM resistor - enables primary-side load current limiting for secondary-side fault protection in isolated supplies. |
| Thermal Shutdown Threshold | +160°C with 10°C hysteresis - ensures safe operation under sustained overload or poor PCB thermal design. |
| CLKO Output | Synchronous open-drain clock output - permits precise timing alignment across multiple isolated power stages without external PLLs. |
| Package | 14-pin TSSOP-EP (4mm × 5mm, 0.65mm pitch) - provides low thermal resistance (θJA = 39°C/W on 4-layer board) for high-power density layouts. |
Pinout & Package
MAX22258AUD+T is housed in a 14-pin TSSOP-EP package (4mm × 5mm, 0.65mm pitch) with exposed pad thermally connected to GND. The package supports high-current transformer drive while maintaining compact footprint and efficient heat dissipation on standard PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 14 | ST1 / ST2 | H-bridge high-side and low-side transformer drive outputs - deliver complementary 650mARMS current with controlled dead time. |
| 2, 13 | GND | Power ground reference - must be connected to large copper pour; EP pad ties internally to GND for thermal and electrical performance. |
| 3 | CLKO | Synchronous clock output - provides 450kHz (internal) or fCLKI/2 (external) signal for system-level timing coordination. |
| 4 | CLKI | External clock input - overrides internal oscillator when driven; enables EMI reduction and multi-device synchronization. |
| 5 | EN | Active-low enable - places driver in low-power mode (0.7mA) when high; CLKO remains functional regardless of EN state. |
| 6 | ITH | Overcurrent threshold adjustment - sets ST1/ST2 current limit via RLIM resistor; blanking and autoretry ensure robust fault recovery. |
| 10 | FAULT | Open-drain fault indicator - asserts during overcurrent or thermal events; toggles during persistent faults, latches during thermal shutdown. |
| 9 | DTC | Dead time control - sets 30–200ns dead time via RDTC resistor; critical for preventing shoot-through in transformer-coupled H-bridges. |
Key Features
| Feature | Design Value |
|---|---|
| Resistor-programmable dead time | Enables precise optimization for ZVS in LLC topologies or reduced conduction loss in hard-switched converters without layout changes. |
| Synchronous CLKO output | Eliminates need for external clock distribution circuitry when synchronizing multiple isolated power stages in modular systems. |
| Programmable overcurrent threshold | Allows indirect secondary-side load current limiting using only primary-side components-reducing BOM count and isolation complexity. |
| Internal 450kHz ±6% oscillator | Prevents transformer core saturation due to frequency drift, ensuring stable operation without external crystal or timing components. |
| Thermal shutdown with hysteresis | Guarantees automatic recovery after cooling, avoiding latch-up failures in transient overload conditions common in motor drive gate supplies. |
Applications
| Isolated Motor Drive Gate Power Supply | Isolated +24V PLC Field Supply |
|---|---|
|
Use Scenario: Providing isolated gate drive power for IGBTs or SiC MOSFETs in servo drives and inverters where primary-side control and secondary-side isolation are required. IC Role / Device Role / Timing Role: H-bridge transformer driver generating AC primary excitation; CLKO synchronizes auxiliary isolated supplies across multiple half-bridges. Use Value: Enables compact, high-efficiency (>91%) isolated gate power with programmable dead time to prevent shoot-through during fast switching transitions. |
Use Scenario: Delivering regulated +24V to field-side I/O modules in programmable logic controllers where secondary-side faults must not disrupt main controller operation. IC Role / Device Role / Timing Role: Primary-side transformer driver with resistor-set overcurrent limit; FAULT pin signals field-side short-circuit to main CPU. Use Value: Provides fail-safe isolation barrier with automatic retry behavior-maintains system uptime during intermittent field wiring faults. |
| Industrial Isolated Sensor Bias Supply | Redundant Isolated Auxiliary Power |
|
Use Scenario: Generating isolated bias voltage for analog front-end sensors in high-noise factory environments where ground loops must be broken. IC Role / Device Role / Timing Role: Transformer driver operating from 24V DC rail; internal oscillator ensures stable frequency despite input ripple. Use Value: Delivers clean, low-noise isolated supply with <±6% frequency stability-minimizing transformer core losses and EMI in sensitive measurement paths. |
Use Scenario: Implementing redundant isolated DC-DC stages in safety-critical systems such as railway signaling or medical equipment power architectures. IC Role / Device Role / Timing Role: Synchronized H-bridge driver using CLKO output to align switching phases across parallel isolated supplies. Use Value: Reduces output ripple and improves dynamic response through phase-aligned operation-enabling tighter regulation without additional filtering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar H-bridge transformer driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX22256BATB+T | Fixed 60ns dead time; no CLKO or DTC pin; 10-pin TDFN package | Limited to LLC resonant topologies requiring fixed dead time; lacks clock synchronization capability | Select when system requires simpler layout, lower cost, and does not need multi-device sync or adjustable dead time. |
| UCC27211D | 6A peak dual-channel gate driver; no integrated oscillator, dead time, or protection features | Requires external controller, clock source, and protection circuitry; higher BOM count and design effort | Select when driving discrete external MOSFETs in custom topologies where full control over timing and protection is needed. |
Compared with MAX22258AUD+T, MAX22256BATB+T offers smaller footprint and lower cost but sacrifices programmability and synchronization; UCC27211D provides higher drive strength but demands external timing and protection design-making MAX22258AUD+T optimal for integrated, production-ready isolated supply designs.
Availability
MAX22258AUD+T is available at Aetrix Electronics and suitable for isolated motor drive gate power supplies, PLC field supplies, industrial sensor biasing, and redundant auxiliary power systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX22258AUD+T 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 industrial, automotive, communications, and healthcare markets since 1965.
The MAX22256/MAX22258 product line was designed specifically for compact, high-efficiency isolated power supplies in space-constrained industrial automation and motor control systems-integrating driver, oscillator, and protection in a single IC.
FAQ
What is the maximum continuous output current capability of the MAX22258AUD+T?
The MAX22258AUD+T delivers up to 650mARMS to the transformer primary winding. Its ST1 and ST2 outputs support ±1.1A continuous current per pin, with programmable overcurrent limiting (0.2A–1.1A) set via the RLIM resistor on the ITH pin. This rating assumes proper PCB thermal design using the exposed pad and four-layer board layout.
Does the MAX22258AUD+T require an external clock to operate?
No, the MAX22258AUD+T operates autonomously using its internal 450kHz ±6% oscillator when CLKI is grounded. An external clock is optional and applied to CLKI only when precise frequency control, EMI reduction, or multi-device synchronization is required-the internal oscillator ensures reliable startup and fault recovery.
How does the FAULT pin behave during a sustained overcurrent condition?
During a sustained overcurrent, the MAX22258AUD+T disables ST1/ST2 after 2.4ms blanking time and asserts FAULT. After 76ms autoretry, it re-enables ST1/ST2; if the fault persists, FAULT toggles with each retry cycle. During thermal shutdown, FAULT remains continuously asserted until junction temperature falls below the 150°C recovery threshold.
Can the MAX22258AUD+T drive transformers for both forward and flyback topologies?
The MAX22258AUD+T is optimized for push-pull and full-bridge transformer drivers in isolated DC-DC applications-not flyback. Its complementary ST1/ST2 outputs with programmable dead time are intended for bidirectional primary excitation, making it ideal for forward, half-bridge, and LLC resonant topologies requiring zero-voltage switching control.
What is the purpose of the DTC pin on the MAX22258AUD+T?
The DTC pin on the MAX22258AUD+T sets the dead time between ST1 and ST2 transitions using an external resistor (RDTC). This resistor adjusts dead time from 30ns to 200ns, preventing shoot-through in transformer-coupled H-bridges and enabling fine-tuning for ZVS in LLC designs-critical for efficiency and reliability in high-frequency isolated supplies.
MAX22258AUD+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Half Bridge
- Applications:
- General Purpose
- Interface:
- Logic
- Load Type:
- Inductive, Capacitive, Resistive
- Technology:
- -
- Rds On (Typ):
- 260mOhm LS, 520mOhm HS
- Current - Output / Channel:
- 1A
- Current - Peak Output:
- 1A
- Voltage - Supply:
- 5V ~ 36V
- Voltage - Load:
- 5V ~ 36V
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Fault Protection:
- Over Current, Over Temperature, UVLO
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP-EP
MAX22258AUD+T FAQ
1.How can I place an order for MAX22258AUD+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX22258AUD+T 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 MAX22258AUD+T reliable?
The price and inventory of MAX22258AUD+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX22258AUD+T is usually 5 days.
3.What payment methods are accepted for MAX22258AUD+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX22258AUD+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX22258AUD+T?
MAX22258AUD+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX22258AUD+T 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 MAX22258AUD+T?
For technical support, including MAX22258AUD+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX22258AUD+T requirements.
6.How does Aetrix verify that MAX22258AUD+T is sourced from the original manufacturer or authorized distributors?
All MAX22258AUD+T 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 MAX22258AUD+T meets industry standards.
7.What is the process for return or replacement of MAX22258AUD+T?
All MAX22258AUD+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX22258AUD+T, 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 MAX22258AUD+T part is unused and in its original packaging.
Return procedure for MAX22258AUD+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX22258AUD+T Tags
-
NCP1393BDR2G
onsemi
-
A3909GLNTR-T
Allegro MicroSystems
-
NCP51530BDR2G
onsemi
-
A3909GLYTR-T
Allegro MicroSystems
-
SIC631CD-T1-GE3
Vishay Siliconix
-
BTN70301EPAXUMA1
Infineon Technologies
-
TDA21520AUMA1
Infineon Technologies
-
AOZ5116QI
Alpha & Omega Semiconductor Inc.
-
IRSM005-301MHTR
Infineon Technologies
-
IRSM005-301MH
Infineon Technologies
-
MP6610GJ-Z
Monolithic Power Systems Inc.
-
DRV8908QPWPRQ1
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
