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Diodes Incorporated DGD2181S8-13
- Part No.:
- DGD2181S8-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Gate Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DGD2181S8-13.pdf
- Description:
- IC GATE DRVR HALF-BRIDGE 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,902
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Product details
Overview
DGD2181S8-13 from Diodes Incorporated is a high-voltage, high-speed dual-channel gate driver IC for half-bridge N-channel MOSFET/IGBT control. It integrates independent high-side (600V bootstrap operation) and low-side drivers with 1.9A source / 2.3A sink peak output current, TTL/CMOS-compatible 3.3V logic inputs, and undervoltage lockout on both supplies. It is used in DC-DC converters, motor controls, and Class D amplifiers operating from –40°C to +125°C in SO-8 package.
For engineers reviewing the DGD2181S8-13 datasheet, DGD2181S8-13 pinout, DGD2181S8-13 application, or DGD2181S8-13 equivalent, key selection criteria include high-side floating voltage capability (600V), propagation delay matching (<35 ns), negative transient tolerance on outputs, and dual UVLO thresholds (8.2V typical) for robust half-bridge timing integrity.
Technical Context
The DGD2181S8-13 implements independent high-side and low-side driver channels with isolated floating high-side supply (VB/VS) referenced to switching node, enabling bootstrap-based high-side gate drive up to 600V. Its Schmitt-triggered HIN/LIN inputs provide noise immunity, while internal pull-downs ensure defined state at power-up.
It features separate undervoltage lockout circuits for VCC (10–20V range) and VB/VS (thresholds ~8.2V), preventing shoot-through during supply ramp-up. Output stage design minimizes cross-conduction via fast turn-on (180 ns typ.) and turn-off (220 ns typ.) delays with tight matching (≤35 ns).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| High-side max voltage | 600V bootstrap operation - enables direct drive of high-side N-MOSFET in 400V+ DC bus systems |
| Output current | 1.9A source / 2.3A sink - sufficient to charge/discharge 10nF gate capacitance in <50ns |
| Logic input compatibility | 3.3V–5V TTL/CMOS - interfaces directly with microcontrollers, PWM controllers, and FPGA I/O |
| Propagation delay match | ≤35 ns HO/LO - ensures <70 ns total skew between high/low outputs, critical for dead-time control |
| UVLO thresholds | VCCUV− = 8.2V, VBSUV− = 8.2V - prevents partial turn-on during brown-out, avoiding thermal runaway |
| Operating temperature | −40°C to +125°C - supports industrial and automotive under-hood environments without derating |
| Package | SO-8 (Type TH) - standard surface-mount footprint compatible with automated assembly and thermal relief pads |
Pinout & Package
Package: SO-8 (Type TH), molded plastic, matte tin-plated leads, moisture sensitivity level 3 per J-STD-020, weight ≈0.075 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 HIN | High-side logic input | In-phase control signal for HO; Schmitt-triggered, 3.3V-compatible, internal pull-down |
| 2 LIN | Low-side logic input | In-phase control signal for LO; identical electrical specs to HIN |
| 3 COM | Low-side return path | Common reference for VCC, LO, and logic ground; must be low-inductance connection to PCB ground plane |
| 4 LO | Low-side gate drive output | Active-low output driving N-MOSFET gate; tolerant to negative transients down to −0.3V |
| 5 VCC | Low-side & logic supply | Fixed 10–20V supply powering low-side driver and input logic; monitored by dedicated UVLO |
| 6 VS | High-side floating return | Switching node reference for high-side driver; tracks MOSFET source voltage during operation |
| 7 HO | High-side gate drive output | Active-high output referenced to VS; drives N-MOSFET gate in bootstrap configuration |
| 8 VB | High-side floating supply | Bootstrap capacitor voltage input (VS + 10–20V); enables high-side conduction when VS swings near HV rail |
Key Features
| Feature | Design Value |
|---|---|
| Floating high-side driver | Supports 600V bootstrap operation - eliminates need for isolated supply or level-shifter in half-bridge topologies |
| Output short-circuit current | 1.9A source / 2.3A sink - delivers >2× peak current vs. typical 1A drivers, reducing gate charge time by ≥30% |
| Negative transient tolerance | Outputs withstand −0.3V undershoot - protects against Miller-induced ringing and layout-induced ground bounce |
| Schmitt-triggered inputs | Hysteresis ≥1.7V (VIH=2.5V, VIL=0.8V) - rejects noise on PWM traces up to 100mVpp without external filtering |
| Dual independent UVLO | Separate VCC and VB/VS monitoring - prevents asymmetric enablement that could cause shoot-through during supply sequencing |
Applications
| DC-DC Converters | Motor Controls |
|---|---|
|
Use Scenario: 48V–400V isolated or non-isolated buck-boost converters in telecom and server PSUs. IC Role / Device Role / Timing Role: Half-bridge gate driver synchronizing complementary N-MOSFET switching with precise dead-time control. Use Value: 35 ns delay matching and 1.9A/2.3A drive strength reduce switching losses by ≥15% vs. legacy drivers in 100 kHz–500 kHz designs. |
Use Scenario: 3-phase BLDC or PMSM inverters in HVAC blowers, power tools, and e-bike controllers. IC Role / Device Role / Timing Role: High-reliability gate driver for inverter leg pairs, managing shoot-through risk across wide temperature and load ranges. Use Value: Dual UVLO and −40°C to +125°C operation ensure fault-free startup and sustained performance in thermally stressed motor enclosures. |
| AC-DC Power Supplies | Class D Power Amplifiers |
|
Use Scenario: PFC + LLC resonant combos in LED drivers and industrial AC-DC modules. IC Role / Device Role / Timing Role: High-side/low-side driver for bridge rectifier replacement or synchronous rectification control. Use Value: 600V high-side capability allows direct integration into 380V DC-link stages without auxiliary isolation components. |
Use Scenario: High-fidelity audio amplifiers delivering >100W into 4Ω loads with >90% efficiency. IC Role / Device Role / Timing Role: Low-jitter, matched-propagation driver minimizing THD+N through precise edge alignment. Use Value: ≤35 ns HO/LO delay mismatch reduces crossover distortion, enabling THD <0.05% at full power. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar half-bridge gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IRS2181STRPBF | Higher 650V high-side rating; integrated bootstrap diode; 2.5A/2.5A output; no 3.3V logic support (min 5V) | Preferred in 600V+ PFC stages; requires external level-shifter for 3.3V MCU interface | Select when higher voltage margin or integrated bootstrap diode simplifies layout; avoid if 3.3V logic interface is mandatory |
| DGD2181M | Direct replacement; same pinout, specs, and SO-8 package; updated manufacturing process; active status (non-obsolete) | Drop-in upgrade path; supports same applications with improved long-term availability and AEC-Q100 option | Strongly recommended for new designs; DGD2181S8-13 is obsolete and no longer manufactured |
Compared with IRS2181STRPBF and DGD2181M, the DGD2181S8-13 offers 3.3V logic compatibility and proven thermal stability but lacks long-term supply assurance; DGD2181M provides identical functionality with lifecycle support, while IRS2181STRPBF trades logic flexibility for higher voltage headroom and integrated diode.
Availability
DGD2181S8-13 is available at Aetrix Electronics and suitable for DC-DC converters, motor controls, and Class D power amplifiers requiring stable component supply despite its obsolete status - limited remaining stock is traceable and fully RoHS-compliant.
Supply support for DGD2181S8-13 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 power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.
The DGD2181 belongs to Diodes' high-voltage gate driver product line, engineered specifically for robust half-bridge control in high-efficiency power conversion systems where shoot-through prevention and thermal resilience are critical.
FAQ
Is DGD2181S8-13 still in production?
No - Diodes Incorporated has officially discontinued the DGD2181S8-13. The datasheet states "OBSOLETE – PART DISCONTINUED" and recommends DGD2181M as the active replacement. Aetrix Electronics holds final-sale inventory with full traceability, but no new production lots will be released.
Can DGD2181S8-13 drive IGBTs reliably?
Yes - the DGD2181S8-13 is explicitly rated for IGBT drive in its official description and features 2.3A sink current, which meets gate discharge requirements for up to 50A/600V IGBTs at 20kHz switching. Its negative transient tolerance and 600V high-side rating ensure safe operation during IGBT tail-current phase.
What is the minimum recommended bootstrap capacitor value?
For 100 kHz operation with 2.3A peak sink current and 20V VB–VS differential, Diodes recommends ≥0.1 µF ceramic (X7R) placed within 5 mm of pins 6 (VS) and 8 (VB). Lower values increase ripple-induced UVLO trips; larger values improve stability but slow startup.
Does DGD2181S8-13 require external level shifters for 3.3V microcontrollers?
No - the DGD2181S8-13 accepts 3.3V logic inputs directly: VIH(min) = 2.5V and VIL(max) = 0.8V at VCC = 10–20V, with Schmitt-triggered inputs ensuring clean edge detection. No external level shifter is needed for standard 3.3V GPIO or PWM outputs.
DGD2181S8-13 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
- Programmable:
- Not Verified
- Driven Configuration:
- Half-Bridge
- Channel Type:
- Independent
- Number of Drivers:
- 2
- Gate Type:
- IGBT, N-Channel MOSFET
- Voltage - Supply:
- 10V ~ 20V
- Logic Voltage - VIL, VIH:
- 0.8V, 2.5V
- Current - Peak Output (Source, Sink):
- 1.9A, 2.3A
- Input Type:
- Non-Inverting
- High Side Voltage - Max (Bootstrap):
- 600 V
- Rise / Fall Time (Typ):
- 40ns, 20ns
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
DGD2181S8-13 FAQ
1.How can I place an order for DGD2181S8-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DGD2181S8-13 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 DGD2181S8-13 reliable?
The price and inventory of DGD2181S8-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DGD2181S8-13 is usually 5 days.
3.What payment methods are accepted for DGD2181S8-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DGD2181S8-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DGD2181S8-13?
DGD2181S8-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DGD2181S8-13 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 DGD2181S8-13?
For technical support, including DGD2181S8-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DGD2181S8-13 requirements.
6.How does Aetrix verify that DGD2181S8-13 is sourced from the original manufacturer or authorized distributors?
All DGD2181S8-13 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 DGD2181S8-13 meets industry standards.
7.What is the process for return or replacement of DGD2181S8-13?
All DGD2181S8-13 units undergo pre-shipment inspection (PSI). If there is an issue with DGD2181S8-13, 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 DGD2181S8-13 part is unused and in its original packaging.
Return procedure for DGD2181S8-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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