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Alpha & Omega Semiconductor Inc. AOD4454
- Part No.:
- AOD4454
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- FETs, MOSFETs
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
AOD4454.pdf
- Description:
- MOSFET N-CH 150V 3A/20A TO252
- Quantity:
- Payment:
- Shipping:
Inventory:5,783
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Product details
Overview
AOD4454 from Alpha & Omega Semiconductor is a 150V N-Channel enhancement-mode trench MOSFET optimized for high-efficiency switching in DC-DC converters and synchronous rectification. It delivers RDS(ON) < 94 mΩ at VGS = 10 V, supports 20 A continuous drain current at TC = 25°C, and features 100% UIS-tested ruggedness - making it suitable for boost converters in telecom power supplies and LED backlighting systems.
For engineers reviewing the AOD4454 datasheet, pinout, applications, or equivalent options, key selection criteria include its TO-252 (DPAK) package thermal performance (RθJC = 1.5°C/W), low gate charge (Qg = 15 nC typ), and avalanche-rated operation under unclamped inductive switching conditions.
Technical Context
The AOD4454 employs advanced trench-gate silicon technology to minimize conduction losses while maintaining fast switching transitions. Its gate threshold voltage (3.4–4.6 V) ensures reliable turn-on with standard logic-level drivers, and its low output capacitance (Coss = 70 pF max) reduces switching energy loss in high-frequency topologies.
Thermally, the device is rated for junction temperatures up to 175°C and uses a copper-leadframe DPAK construction enabling 100 W steady-state power dissipation at TC = 25°C. The 100% Rg test ensures gate resistance consistency (0.7–2.1 Ω), critical for predictable drive timing and EMI control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 150 V - Withstands DC bus voltages up to 150 V in boost and flyback primary-side switches. |
| RDS(ON) @ VGS=10 V | < 94 mΩ - Enables <1.9 W conduction loss at 20 A, reducing heatsink requirements in compact power stages. |
| ID (continuous) | 20 A @ TC = 25°C - Supports high-current synchronous rectifiers without derating in thermally managed PCB layouts. |
| Qg | 15 nC (typ) - Allows efficient gate driving with low-power controllers and minimizes switching transition time. |
| EAS | 50 mJ - Confirmed single-pulse avalanche energy rating enables robust operation during transient overloads. |
| RθJC | 1.5 °C/W - Enables direct mounting to heatsinks for high-power applications where case temperature must be tightly controlled. |
| tr/tf | 5.5 ns / 3 ns - Fast edge rates support >500 kHz switching frequencies while limiting overlap loss. |
Pinout & Package
Package: TO-252 (DPAK), surface-mount, copper-leadframe construction with exposed drain pad for thermal and electrical connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| G (Gate) | Control terminal | Receives gate drive signal; low input capacitance (Ciss = 820 pF typ) eases driver selection. |
| D (Drain) | High-side switch node | Connected to exposed copper pad on bottom side; carries full load current and serves as primary thermal path. |
| S (Source) | Reference node / return path | Provides common reference for gate drive and current sensing; tied to power ground in most buck/boost configurations. |
Key Features
| Feature | Design Value |
|---|---|
| 100% UIS tested | Guarantees minimum 50 mJ single-pulse avalanche energy, eliminating need for external snubbers in inductive switching circuits. |
| Low RDS(ON) × Qg figure-of-merit | ~1.41 Ω·nC - Optimized trade-off between conduction and switching loss for high-frequency DC-DC stages. |
| Enhanced body diode recovery | Qrr = 230 nC (typ), trr = 32.5 ns - Reduces reverse-recovery loss and EMI in synchronous rectifier mode. |
| 100% Rg tested | Gate resistance 0.7–2.1 Ω - Ensures consistent gate drive timing across production lots for stable PWM loop behavior. |
Applications
| Telecom Power Supplies | LED Backlighting Drivers |
|---|---|
Use Scenario: High-density 48 V input boost converters delivering regulated 12–24 V for base station RF modules. IC Role / Device Role: Primary-side high-side switch in non-isolated boost topology. Use Value: Low RDS(ON) and fast switching reduce conduction and transition losses, improving efficiency above 94% at full load. |
Use Scenario: Synchronous rectifier in boost-based LED current sources for large-panel LCD backlighting. IC Role / Device Role: Low-side synchronous rectifier replacing Schottky diode in continuous conduction mode. Use Value: Body diode soft recovery and low forward drop (VSD = 0.72 V) cut rectifier losses by >35% versus 40 V Schottky alternatives. |
| Industrial DC-DC Modules | Consumer AC-DC Adapters |
Use Scenario: 24–48 V input, 5–12 V output isolated flyback secondary-side synchronous rectifier. IC Role / Device Role: Secondary-side N-channel MOSFET controlled by self-driven or controller-synchronized gate signal. Use Value: 150 V VDS rating accommodates reflected voltage spikes and leakage inductance ringing without clamping. |
Use Scenario: High-efficiency 100–240 VAC input, 12 V/3 A adapter using active clamp flyback with synchronous rectification. IC Role / Device Role: Main switch in active clamp circuit operating at 100–130 kHz. Use Value: Rugged UIS rating and low Qg enable reliable clamp capacitor charging and minimal gate drive loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-Channel MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STP16NF15 | 150 V, 16 A, RDS(ON) = 120 mΩ @ 10 V, TO-220 package, no UIS rating | Larger footprint, higher conduction loss, unsuitable for high-frequency or avalanche-prone designs | Consider only for cost-sensitive, low-frequency linear-regulated supplies where thermal margin is ample. |
| IRF6644 | 150 V, 20 A, RDS(ON) = 85 mΩ @ 10 V, PQFN 5×6 mm, Qg = 22 nC, no 100% Rg test | Lower RDS(ON) but higher gate charge increases driver loss; smaller package limits thermal mass | Prefer for space-constrained, high-density boards where board-level thermal management compensates for lower RθJC. |
Compared with STP16NF15 and IRF6644, the AOD4454 uniquely balances low RDS(ON), low Qg, verified avalanche capability, and DPAK thermal performance - making it optimal for industrial and telecom power stages requiring both efficiency and ruggedness.
Availability
AOD4454 is available at Aetrix Electronics and suitable for telecom power supplies, LED backlighting drivers, and industrial DC-DC modules requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for AOD4454 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
Alpha & Omega Semiconductor (AOS) is a fabless power semiconductor company specializing in high-performance MOSFETs, IGBTs, and power ICs for computing, consumer, and industrial markets.
The AOD4454 belongs to AOS's advanced trench MOSFET product line, engineered specifically for high-efficiency, high-reliability switching in mid-voltage DC-DC conversion and synchronous rectification applications.
FAQ
What is the maximum continuous drain current rating for the AOD4454?
The AOD4454 supports 20 A continuous drain current at case temperature TC = 25°C. At TC = 100°C, the rating drops to 14 A due to thermal derating. This value is package-limited and assumes proper PCB copper area and airflow per AOS' thermal test conditions (1 in² FR-4, 2 oz copper).
Does the AOD4454 have avalanche capability, and is it tested?
Yes, the AOD4454 is 100% unclamped inductive switching (UIS) tested with a guaranteed single-pulse avalanche energy (EAS) of 50 mJ. This rating is confirmed per JEDEC JESD24-1 and applies under specified test conditions (L = 0.1 mH, IAS = 5 A, TJ = 25°C).
What is the gate threshold voltage range for the AOD4454?
The AOD4454 has a gate threshold voltage (VGS(th)) range of 3.4 V to 4.6 V at TJ = 25°C and ID = 250 µA. This ensures reliable turn-on with standard 5 V or 3.3 V logic-level gate drivers while avoiding false triggering near system noise margins.
Can the AOD4454 be used as a synchronous rectifier in a 12 V output boost converter?
Yes, the AOD4454 is explicitly recommended for synchronous rectification in boost converters. Its low RDS(ON) (<94 mΩ), fast body diode recovery (trr = 32.5 ns), and low VSD (0.72 V) significantly reduce conduction and reverse-recovery losses compared to discrete Schottky diodes in 12 V output stages.
What thermal resistance values apply to the AOD4454 in standard PCB mounting?
For the AOD4454 mounted on 1 in² FR-4 board with 2 oz copper (still air, TA = 25°C), RθJA = 50°C/W. When heatsinked, RθJC = 1.5°C/W enables up to 100 W power dissipation at TC = 25°C - critical for high-current synchronous rectifier designs.
AOD4454 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 150 V
- Current - Continuous Drain (Id) @ 25°C:
- 3A (Ta), 20A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 7V, 10V
- Rds On (Max) @ Id, Vgs:
- 94mOhm @ 10A, 10V
- Vgs(th) (Max) @ Id:
- 4.6V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 20 nC @ 10 V
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 985 pF @ 75 V
- FET Feature:
- -
- Power Dissipation (Max):
- 2.5W (Ta), 100W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-252 (DPAK)
AOD4454 FAQ
1.How can I place an order for AOD4454 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOD4454 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 AOD4454 reliable?
The price and inventory of AOD4454 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOD4454 is usually 5 days.
3.What payment methods are accepted for AOD4454?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOD4454 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOD4454?
AOD4454 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOD4454 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 AOD4454?
For technical support, including AOD4454 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOD4454 requirements.
6.How does Aetrix verify that AOD4454 is sourced from the original manufacturer or authorized distributors?
All AOD4454 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 AOD4454 meets industry standards.
7.What is the process for return or replacement of AOD4454?
All AOD4454 units undergo pre-shipment inspection (PSI). If there is an issue with AOD4454, 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 AOD4454 part is unused and in its original packaging.
Return procedure for AOD4454:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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