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Diodes Incorporated ZXGD3111N8TC
- Part No.:
- ZXGD3111N8TC
- Manufacturer:
- Diodes Incorporated
- Category:
- OR Controllers, Ideal Diodes
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ZXGD3111N8TC.pdf
- Description:
- IC MOSFET CTLR SYNCH 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,801
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Product details
Overview
ZXGD3111N8TC from Diodes Incorporated is a 200V active OR-ing MOSFET controller in SO-8 package, designed to drive low-RDS(ON) N-channel MOSFETs as ideal diodes in redundant power systems. It features a -3mV turn-off threshold (±2mV tolerance), <600ns reverse-current blocking time, and supports ±200V rail operation in both high-side and low-side configurations - enabling >99% efficiency in 48V telecom power distribution.
For engineers reviewing the ZXGD3111N8TC datasheet, ZXGD3111N8TC pinout, ZXGD3111N8TC application, or ZXGD3111N8TC equivalent, key selection criteria include drain voltage rating, gate drive sink/source capability, quiescent current (<1mA), thermal derating behavior, and compatibility with N+1 redundant PSU architectures requiring sub-millivolt sensing precision.
Technical Context
The ZXGD3111N8TC integrates a precision differential amplifier with a high-current gate driver to monitor VDS across an external MOSFET. Its comparator detects voltage polarity reversal with -3mV threshold, triggering rapid gate discharge via 5A peak sink current to block reverse current within 600ns.
It operates over VCC = 4–20V and supports ±200V drain-to-ground voltage, enabling use on both +48V and -48V telecom rails. The device clamps gate output at 12V when VCC > 12V and delivers <50mW standby power at 48V input due to 200µA typical quiescent current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Drain Voltage Rating | 200V - supports full-range telecom DC bus operation including ±48V, ±12V, and up to ±200V fault transients |
| Turn-Off Threshold | -3mV (±2mV) - enables ultra-low forward-drop ideal diode behavior with minimal conduction loss in high-current paths |
| Gate Sink Current | 5A peak - ensures sub-600ns MOSFET turn-off under heavy capacitive load, critical for bus voltage hold-up during PSU failure |
| Quiescent Current | 200µA typ - yields <50mW standby consumption in 48V systems, reducing thermal load and improving system efficiency |
| Supply Voltage Range | 4–20V - allows direct biasing from auxiliary rails or local LDOs without external regulation overhead |
| Thermal Resistance | 159°C/W (15mm×15mm heatsink) - defines PCB copper area requirements for continuous 1A gate drive at 75°C ambient |
Pinout & Package
SO-8 surface-mount package with exposed thermal pad (pins 5 & 6 PGND and pin 3 VCC as primary thermal paths); molded green compound, RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 GND | Signal Ground Reference | Connects to MOSFET source and system ground reference; forms return path for differential sense amplifier |
| 3 VCC | Power Supply Input | Bias supply for internal circuitry; requires local X7R decoupling capacitor; primary thermal path to PCB |
| 4 GATE | High-Current Gate Driver Output | Sources 0.66A / sinks 5A to control MOSFET; clamped at 12V when VCC > 12V; sensitive to trace inductance |
| 5, 6 PGND | Power Ground Return | Low-impedance return for gate sink current and thermal dissipation; must be tied to MOSFET source and large copper pour |
| 7 DRAIN | Drain-Sense Input | Differential input measuring VDS; detects reverse conduction onset with ±2mV offset stability over temperature |
| 8 NC | No Connection | Not internally bonded; left floating or grounded per layout best practice to reduce noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| Active OR-ing Control Logic | Real-time VDS monitoring with sub-millivolt threshold enables true ideal diode behavior in N+1 redundant PSUs |
| High-Speed Reverse-Current Blocking | <600ns turn-off propagation prevents common-bus collapse during single-PSU failure in telecom/data center racks |
| Wide Rail Compatibility | Operates on ±200V rails - supports both high-side (+48V) and low-side (-48V) configurations without external level-shifting |
| Low-Power Standby Operation | <1mA IQ reduces idle losses in always-on infrastructure equipment while maintaining fast fault response |
| Robust Thermal Design | Multiple thermal paths via pins 3, 5, and 6 allow scalable copper area implementation for 0.5W–0.8W continuous dissipation |
Applications
| Telecom Redundant Power | Data Center Server Rails |
|---|---|
|
Use Scenario: Dual -48V PSUs feeding shared backplane in carrier-grade switching equipment. IC Role / Device Role / Timing Role: OR-ing controller detecting reverse current flow during hot-swap or PSU failure. Use Value: Prevents bus voltage droop below -42V by blocking reverse current within 600ns, ensuring uninterrupted packet forwarding. |
Use Scenario: Parallel +12V VRM outputs feeding CPU/GPU power domains in high-density rack servers. IC Role / Device Role / Timing Role: Ideal diode supervisor enforcing unidirectional current flow between redundant VRMs. Use Value: Eliminates 0.4V diode drop, saving >12W per 30A rail and reducing thermal load on server motherboard layers. |
| Industrial PLC Power Modules | Network Equipment Hot-Swap Slots |
|
Use Scenario: Dual-input 24VDC power modules in programmable logic controllers with failover capability. IC Role / Device Role / Timing Role: Fault-isolation controller that disables failed input path while maintaining output regulation. Use Value: Enables seamless switchover without brownout detection delay, preserving real-time I/O timing integrity. |
Use Scenario: Line-card slots in modular switches supporting live insertion/removal of powered modules. IC Role / Device Role / Timing Role: Reverse-current blocker isolating discharged module capacitance from backplane bus during insertion. Use Value: Avoids bus sag during hot-swap events, preventing reset of adjacent line cards and control plane disruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar active OR-ing controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5050-1 | Fixed 50mV turn-on threshold; no negative threshold support; 20V max VIN | Limited to low-voltage (≤20V) high-side OR-ing only; unsuitable for -48V or ±200V rails | Select only for ≤20V, high-side-only designs where millivolt-level sensing is not required. |
| TPS2410 | Adjustable threshold (10–100mV); 80V max VDS; 1.2A gate sink | Cannot support telecom -48V or data center +48V rails beyond 80V absolute rating | Use only in industrial 24V/48V systems with moderate reverse-current blocking speed requirements. |
Compared with LM5050-1 and TPS2410, ZXGD3111N8TC uniquely supports ±200V operation and -3mV threshold, making it the sole option for telecom-grade -48V OR-ing with sub-millisecond fault isolation and zero forward-drop conduction.
Availability
ZXGD3111N8TC is available at Aetrix Electronics and suitable for telecom power redundancy, data center server rails, and industrial PLC power modules requiring stable component supply despite its obsolete status - inventory is actively managed with verified legacy stock and traceable sourcing.
Supply support for ZXGD3111N8TC 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions for industrial and communications markets.
The ZXGD3111 product line targets high-efficiency OR-ing in mission-critical power systems, specifically engineered for telecom and data center infrastructure where millivolt-level sensing and nanosecond fault response are mandatory.
FAQ
What is the functional difference between ZXGD3111N8TC and the newer ZXGD3111N7?
The ZXGD3111N7 replaces the ZXGD3111N8TC with identical electrical specifications and pinout but improved ESD robustness (HBM increased to 6kV) and updated process control. Both share the same -3mV turn-off threshold, 200V drain rating, and SO-8 package; the N7 is recommended for new designs due to enhanced manufacturing consistency and long-term supply assurance.
Can ZXGD3111N8TC be used with P-channel MOSFETs?
No - the ZXGD3111N8TC is designed exclusively for N-channel MOSFETs in high-side or low-side configurations. Its gate driver architecture sources and sinks current to turn on/off N-channel devices; it lacks the charge pump or level-shifting circuitry required to drive P-channel gates referenced to high-voltage rails.
How does the -3mV turn-off threshold impact MOSFET selection?
The -3mV threshold demands MOSFETs with RDS(ON) low enough that ILOAD × RDS(ON) remains below 3mV at full current - e.g., ≤100µΩ for 30A loads. This necessitates paralleled or trench-gate devices with specified milliohm-level RDS(ON) at VGS = 10V, verified across temperature and lifetime.
Is ZXGD3111N8TC compatible with 12V-only systems?
Yes - it operates down to VCC = 4V and delivers full performance at 12V, including 5A gate sink current and <600ns turn-off. At 12V, gate output clamping does not activate, allowing full 12V gate drive for optimal RDS(ON) reduction in mid-voltage systems like industrial 12V/24V PSUs.
ZXGD3111N8TC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- N+1 ORing Controller
- FET Type:
- N-Channel
- Ratio - Input:Output:
- N:1
- Internal Switch(s):
- No
- Delay Time - ON:
- 400 ns
- Delay Time - OFF:
- 400 ns
- Current - Output (Max):
- -
- Current - Supply:
- 200 µA
- Voltage - Supply:
- 4V ~ 20V
- Applications:
- General Purpose
- Operating Temperature:
- -50°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
ZXGD3111N8TC FAQ
1.How can I place an order for ZXGD3111N8TC through Aetrix?
Please submit a Request for Quotation (RFQ) for ZXGD3111N8TC 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 ZXGD3111N8TC reliable?
The price and inventory of ZXGD3111N8TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXGD3111N8TC is usually 5 days.
3.What payment methods are accepted for ZXGD3111N8TC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXGD3111N8TC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZXGD3111N8TC?
ZXGD3111N8TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZXGD3111N8TC 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 ZXGD3111N8TC?
For technical support, including ZXGD3111N8TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXGD3111N8TC requirements.
6.How does Aetrix verify that ZXGD3111N8TC is sourced from the original manufacturer or authorized distributors?
All ZXGD3111N8TC 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 ZXGD3111N8TC meets industry standards.
7.What is the process for return or replacement of ZXGD3111N8TC?
All ZXGD3111N8TC units undergo pre-shipment inspection (PSI). If there is an issue with ZXGD3111N8TC, 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 ZXGD3111N8TC part is unused and in its original packaging.
Return procedure for ZXGD3111N8TC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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