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Diodes Incorporated DGD2108S8-13
- Part No.:
- DGD2108S8-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Gate Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DGD2108S8-13.pdf
- Description:
- IC GATE DRVR HALF-BRIDGE 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,136
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Product details
Overview
DGD2108S8-13 from Diodes Incorporated is a high-voltage half-bridge gate driver IC designed to control two N-channel MOSFETs or IGBTs in bootstrap-configured power stages. It supports 600V high-side floating operation, features 540ns internal deadtime, and operates across -40°C to +125°C. Used in DC-DC converters and motor controls where robust shoot-through protection and TTL/CMOS-compatible inputs (down to 3.3V) are required.
For engineers reviewing the DGD2108S8-13 datasheet, DGD2108S8-13 pinout, DGD2108S8-13 application, or DGD2108S8-13 equivalent, key selection criteria include bootstrap high-side voltage rating (600V), guaranteed deadtime (400–680ns), logic input compatibility (3.3V–5V), undervoltage lockout thresholds (7.4–9.8V), and SO-8 thermal resistance (200°C/W).
Technical Context
The DGD2108 integrates independent high-side and low-side drivers with matched propagation delays (tON typ 220ns, tOFF typ 200ns) and tight deadtime control (540ns typ). Its floating high-side section uses bootstrap biasing with dVS/dt tolerance up to 50V/ns and withstands VS transients from –5V to +600V.
Logic inputs HIN and LIN* feature Schmitt-triggered thresholds (VIH min 2.5V, VIL max 0.6V) with internal pull-downs, enabling noise-immune PWM control. Undervoltage lockout is implemented separately for VCC and VB/VS rails, with hysteresis (0.7V typ) preventing oscillation near threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| High-Side Voltage Rating | 600V max VS offset - enables use in 400V DC bus inverters and PFC stages |
| Internal Deadtime | 400–680ns - prevents cross-conduction in half-bridge switching without external timing circuitry |
| Logic Input Compatibility | 3.3V–5V TTL/CMOS - allows direct interface with microcontrollers and FPGA I/O without level-shifting |
| Supply Voltage Range | VCC = 10–20V, VB = VS +10 to VS +20V - supports wide gate drive voltage tuning for MOSFET/IGBT optimization |
| Propagation Delay Match | |tON − tOFF| ≤ 30ns - ensures symmetrical turn-on/turn-off timing critical for low EMI motor drives |
| Operating Temperature | −40°C to +125°C - qualified for industrial and automotive under-hood ambient conditions |
| Thermal Resistance | RθJA = 200°C/W - defines maximum power dissipation (0.625W) on standard 2-layer FR-4 PCB |
Pinout & Package
Package: SO-8 (Type TH), surface-mount, lead-free, RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VCC | Low-side and logic supply rail | Provides power to internal logic and low-side driver; must be decoupled locally |
| 2 HIN | High-side logic input | In-phase PWM signal controlling HO output; Schmitt-triggered, 2.5V VIH min |
| 3 LIN* | Low-side logic input (inverted) | Out-of-phase PWM signal controlling LO output; active-low polarity |
| 4 COM | Low-side return reference | Ground reference for VCC, LO, and logic; must connect to power ground plane |
| 5 LO | Low-side gate drive output | Drives N-MOSFET gate with 600mA pulsed sink current; referenced to COM |
| 6 VS | High-side floating supply return | Reference node for high-side driver; tracks switching node potential in bootstrap topology |
| 7 HO | High-side gate drive output | Drives N-MOSFET gate with 290mA pulsed source current; referenced to VS |
| 8 VB | High-side floating supply | Bootstrap capacitor connection point; supplies HO when VS swings high |
Key Features
| Feature | Design Value |
|---|---|
| Floating high-side driver | Operates with VS up to +600V relative to COM - eliminates need for isolated supplies in half-bridge designs |
| Integrated deadtime generation | Fixed 540ns typ delay between LO turn-off and HO turn-on - prevents shoot-through without external RC networks |
| Negative transient tolerance | Outputs withstand −5V undershoot on VS and COM - improves reliability in noisy motor-drive environments |
| Independent UVLO per supply | VCCUV− = 7.4V, VBSUV− = 7.4V - ensures both drivers disable before gate drive becomes insufficient |
| Schmitt-triggered inputs | Hysteresis ≥0.7V on HIN/LIN* - rejects noise on long PCB traces in industrial control cabinets |
Applications
| DC-DC Converters | Motor Controls |
|---|---|
Use Scenario: Isolated or non-isolated buck-boost and LLC resonant converters operating from 300–400V DC input. IC Role / Device Role / Timing Role: Half-bridge gate driver coordinating complementary N-MOSFET switching with precise deadtime to minimize conduction loss and prevent shoot-through. Use Value: 600V high-side rating and 540ns internal deadtime reduce component count and layout complexity versus discrete timing solutions. | Use Scenario: Three-phase BLDC or PMSM motor drives in HVAC blowers, power tools, and industrial pumps. IC Role / Device Role / Timing Role: Gate driver stage translating MCU PWM signals into high-current, phase-shifted gate pulses for upper/lower FET pairs. Use Value: Matched propagation delays (<30ns) and −40°C to +125°C operation ensure consistent torque response across temperature and load variations. |
| AC-DC Power Supplies | Class D Power Amplifiers |
Use Scenario: High-efficiency server PSUs and telecom rectifiers using active clamp forward or LLC topologies. IC Role / Device Role / Timing Role: Driving synchronous rectifiers and primary-side half-bridges with fast rise/fall times (tr ≤ 220ns, tf ≤ 80ns) to reduce switching losses. Use Value: 10–20V VCC range allows optimal gate voltage selection for SiC or GaN FETs, improving efficiency at high frequencies. | Use Scenario: Audio amplifiers delivering >100W into 4Ω loads with <0.1% THD+N, requiring low-jitter gate timing. IC Role / Device Role / Timing Role: Output stage driver ensuring minimal propagation skew between high- and low-side outputs to suppress crossover distortion. Use Value: Tight delay matching (≤30ns) and Schmitt-triggered inputs maintain clean PWM edges even with noisy digital audio controller outputs. |
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 |
|---|---|---|---|
| IRS21844SPbF | Higher peak output current (600mA source/600mA sink), but no 3.3V logic support; requires ≥5V input | Preferred in legacy 5V-control systems; less suitable for modern low-voltage MCUs | Select when higher drive strength is needed and system logic runs at 5V |
| LM5109BMMX/NOPB | Wider VDD range (5–14V), lower quiescent current (ICCQ = 0.35mA), but only 400V high-side rating | Better for cost-sensitive 200–400V applications; not rated for 600V bus designs | Select for compact 12V-input DC-DC converters where 600V capability is unnecessary |
Compared with IRS21844SPbF and LM5109BMMX/NOPB, the DGD2108S8-13 uniquely balances 600V high-side capability, 3.3V logic compatibility, and integrated deadtime-making it optimal for new designs using mixed-voltage controllers and 400V+ DC buses.
Availability
DGD2108S8-13 is available at Aetrix Electronics and suitable for DC-DC converters, motor controls, and AC-DC power supplies requiring stable component supply despite its obsolete status through controlled inventory and lifecycle management.
Supply support for DGD2108S8-13 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 high-reliability power management, signal integrity, and protection solutions.
The DGD2108 belongs to Diodes' high-voltage gate driver product line, engineered for efficient, robust switching in industrial power conversion and motor drive systems where bootstrap-based half-bridge control is essential.
FAQ
Is DGD2108S8-13 still in production?
No-Diodes Incorporated has discontinued the DGD2108S8-13 (marked "OBSOLETE" in DS38287 Rev. 6-4). However, Aetrix Electronics maintains limited legacy stock with full traceability and offers engineering support for last-time buys and design migration paths.
Can DGD2108S8-13 drive SiC or GaN FETs?
Yes-the DGD2108S8-13 supports VCC up to 20V and delivers 290mA source / 600mA sink peak current, sufficient for most 650V SiC MOSFETs and GaN HEMTs. Its 100ns rise time and 35ns fall time meet typical fast-switching requirements, though layout optimization remains critical.
What is the minimum bootstrap capacitor value recommended?
For 600V operation at 100kHz with 2A gate charge, Diodes recommends ≥0.1µF ceramic (X7R, 25V+ rating) placed within 5mm of VB and VS pins. The datasheet specifies ILK ≤ 50µA at VB = VS = 600V, confirming low leakage essential for stable bootstrap hold-up.
Does DGD2108S8-13 require external bootstrap diode?
Yes-a fast recovery or Schottky diode (e.g., 1N4148 or PMEG3010AE) must be used between VCC and VB to charge the bootstrap capacitor during low-side conduction. The IC does not integrate this diode; omission causes high-side drive failure after initial startup.
DGD2108S8-13 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:
- 0.6V, 2.5V
- Current - Peak Output (Source, Sink):
- 290mA, 600mA
- Input Type:
- Non-Inverting
- High Side Voltage - Max (Bootstrap):
- 600 V
- Rise / Fall Time (Typ):
- 100ns, 35ns
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
DGD2108S8-13 FAQ
1.How can I place an order for DGD2108S8-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DGD2108S8-13 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 DGD2108S8-13 reliable?
The price and inventory of DGD2108S8-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DGD2108S8-13 is usually 5 days.
3.What payment methods are accepted for DGD2108S8-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DGD2108S8-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DGD2108S8-13?
DGD2108S8-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DGD2108S8-13 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 DGD2108S8-13?
For technical support, including DGD2108S8-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DGD2108S8-13 requirements.
6.How does Aetrix verify that DGD2108S8-13 is sourced from the original manufacturer or authorized distributors?
All DGD2108S8-13 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 DGD2108S8-13 meets industry standards.
7.What is the process for return or replacement of DGD2108S8-13?
All DGD2108S8-13 units undergo pre-shipment inspection (PSI). If there is an issue with DGD2108S8-13, 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 DGD2108S8-13 part is unused and in its original packaging.
Return procedure for DGD2108S8-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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