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Diodes Incorporated DGD21814S14-13
- Part No.:
- DGD21814S14-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Gate Drivers
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DGD21814S14-13.pdf
- Description:
- IC GATE DRVR HALF-BRIDGE 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,255
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Product details
Overview
DGD21814S14-13 from Diodes Incorporated is a high-voltage half-bridge gate driver IC for N-channel MOSFETs and IGBTs, featuring 600V high-side bootstrap operation, 1.9A source / 2.3A sink output current, TTL/CMOS-compatible 3.3V logic inputs, and operation from –40°C to +125°C in SO-14 (Type TH) package. It enables robust motor control and DC-AC inverter designs with integrated UVLO and negative transient-tolerant outputs.
For engineers reviewing the DGD21814S14-13 datasheet, DGD21814S14-13 pinout, DGD21814S14-13 application in half-bridge power stages, or DGD21814S14-13 equivalent for high-side/low-side drive replacement, this page delivers verified specifications, validated pin functions, real-world use cases, and confirmed alternatives aligned with Diodes' official documentation.
Technical Context
The DGD21814S14-13 integrates independent high-side and low-side drivers with floating high-side architecture supporting up to 600V offset (VS), dVS/dt immunity of 50 V/ns, and matched propagation delays (≤35 ns skew). Its Schmitt-triggered HIN/LIN inputs ensure noise-immune switching at 3.3V logic levels.
It implements dual undervoltage lockout (VBSUV± and VCCUV± thresholds at ~8.2–9.8V), supports bootstrap gate supply (VB) and fixed logic supply (VCC) independently rated 10–20V, and tolerates –0.3V to VCC+0.3V on LO and VS–0.3V to VB+0.3V on HO - critical for shoot-through prevention in hard-switching topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| High-Side Voltage Rating | 600V max offset (VS) - enables direct integration in 400V DC bus inverters without level-shifting circuitry |
| Output Drive Strength | 1.9A source / 2.3A sink - sufficient to rapidly charge/discharge >10nF gate capacitance with <60ns rise/fall times |
| Logic Input Compatibility | 3.3V–20V CMOS/TTL - allows direct interface with microcontrollers, DSPs, and PWM controllers without level shifters |
| Propagation Delay Match | ≤35 ns HO/LO delay skew - minimizes dead-time uncertainty and reduces risk of cross-conduction in half-bridge |
| Operating Temperature | –40°C to +125°C ambient - qualified for industrial motor drives and automotive under-hood auxiliary power modules |
| Supply Voltage Range | VCC = 10–20V; VB = VS +10V to VS +20V - supports flexible bootstrap design across wide input voltage ranges |
| UVLO Thresholds | VCCUV± = 7.4–9.8V; VBSUV± = 7.4–9.8V - ensures reliable turn-off before gate threshold collapse during brown-out conditions |
Pinout & Package
Package: SO-14 (Type TH), surface-mount, lead-free, RoHS-compliant molded plastic with matte tin-plated leads and moisture sensitivity level 3 per J-STD-020.
| 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 (VSS) | Logic ground reference | Reference for HIN/LIN inputs and VCC supply; isolated from COM and VS |
| 5 (COM) | Low-side return path | Common node for LO output, VCC return, and low-side source connection |
| 6 (LO) | Low-side gate drive output | Push-pull driver referenced to COM; tolerant to –0.3V undershoot |
| 7 (VCC) | Fixed low-side/logic supply | 10–20V input powering LIN, VSS circuitry, and LO driver stage |
| 11 (VS) | High-side floating supply return | Reference for HO output and bootstrap capacitor bottom; tracks high-side source potential |
| 12 (HO) | High-side gate drive output | Level-shifted push-pull driver referenced to VS; operates up to VB = VS + 20V |
| 13 (VB) | High-side floating supply | Bootstrap-supplied rail for HO driver; must be ≥VS + 10V for full enhancement |
| 4, 8, 9, 10, 14 | No connection | Internally unconnected; must remain unconnected on PCB to avoid parasitic coupling |
Key Features
| Feature | Design Value |
|---|---|
| Floating high-side driver | Supports 600V bootstrap operation (VB–VS ≤ 600V), eliminating need for isolated supplies or pulse transformers |
| Matched HO/LO timing | ≤35 ns propagation delay mismatch ensures precise dead-time control and prevents shoot-through in half-bridge |
| Negative transient tolerance | HO and LO outputs withstand –0.3V undershoot relative to their respective references (VS and COM), improving noise resilience |
| Integrated UVLO protection | Independent high-side (VBSUV) and low-side (VCCUV) lockout with hysteresis prevents erratic switching during supply sag |
| 3.3V logic compatibility | HIN/LIN accept 3.3V signals directly - simplifies interface with modern MCUs and avoids external level-shifting components |
Applications
| DC-DC Converters | Motor Controls |
|---|---|
|
Use Scenario: Isolated or non-isolated synchronous buck/boost converters operating from 300–400V DC input. IC Role / Device Role / Timing Role: Half-bridge gate driver controlling high-side and low-side N-MOSFETs with precise timing and 600V blocking capability. Use Value: Enables high-efficiency, high-frequency (>100 kHz) conversion with minimal external components due to integrated UVLO and bootstrap support. |
Use Scenario: Brushless DC (BLDC) motor inverters in HVAC blowers, power tools, and industrial pumps. IC Role / Device Role / Timing Role: Dual-channel gate driver delivering matched HO/LO timing to three-phase inverter half-bridges. Use Value: Reduces gate drive loop inductance and timing skew, improving torque ripple performance and thermal margin in 125°C ambient environments. |
| DC-AC Inverters | Class D Power Amplifiers |
|
Use Scenario: Grid-tied solar microinverters and UPS systems converting 350–450V DC to 230V AC. IC Role / Device Role / Timing Role: High-reliability gate driver managing high-side switching under fast dVS/dt transients (up to 50 V/ns). Use Value: Maintains clean switching waveforms and prevents false triggering during high dv/dt events common in transformerless inverter topologies. |
Use Scenario: High-fidelity audio amplifiers requiring low-distortion, high-slew-rate output stage control. IC Role / Device Role / Timing Role: Fast-turning gate driver minimizing crossover distortion via sub-300ns propagation delays and tight HO/LO matching. Use Value: Achieves THD+N <0.05% at 1 kHz by reducing dead-time uncertainty and enabling optimized gate resistor selection. |
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 |
|---|---|---|---|
| IRS21844STRPBF | Higher 600V rating same; 2.5A sink/2.0A source; no 3.3V logic support (min 5V VIH); slower tON/tOFF (~250/300ns) | Limited to 5V-control systems; less suitable for low-voltage MCU interfaces | Select when legacy 5V PWM controllers are used and higher sink current is prioritized over logic-level flexibility |
| DGD21814M | Direct replacement per Diodes; identical pinout, specs, and SO-14 package; marked "M" for updated wafer/process | No functional change; designed for continuity in new designs where DGD21814S14-13 is obsolete | Preferred for all new designs - maintains full compatibility while ensuring long-term supply availability |
Compared with IRS21844STRPBF, DGD21814S14-13 offers superior 3.3V logic compatibility and tighter timing matching, while DGD21814M provides identical functionality with assured production continuity - making it the recommended upgrade path for obsolescence mitigation.
Availability
DGD21814S14-13 is available at Aetrix Electronics and suitable for DC-AC inverters, motor controls, and Class D power amplifiers requiring stable component supply despite its obsolete status - inventory is managed for legacy system support and repair programs.
Supply support for DGD21814S14-13 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 connectivity solutions for industrial, computing, and consumer markets.
The DGD21814 belongs to Diodes' high-voltage gate driver product line, engineered specifically for robust half-bridge control in high-efficiency power conversion systems operating up to 600V and 125°C ambient.
FAQ
Is DGD21814S14-13 still in production?
No - Diodes Incorporated officially discontinued DGD21814S14-13 and designated it obsolete. The recommended replacement is DGD21814M, which shares identical electrical specifications, pinout, and SO-14 packaging. Aetrix Electronics maintains limited legacy stock for repair and maintenance, but new designs should migrate to the M-suffix variant.
Can DGD21814S14-13 drive IGBTs reliably?
Yes - the DGD21814S14-13 is explicitly characterized for driving both N-channel MOSFETs and IGBTs in half-bridge configurations. Its 2.3A sink current and 1.9A source current meet typical IGBT gate drive requirements, and its negative transient tolerance on HO/LO helps suppress Miller-induced turn-on during high dV/dt switching.
What is the minimum bootstrap capacitor value required?
While not specified in the datasheet as a fixed value, Diodes recommends using ≥0.1 µF ceramic capacitors with low ESR for the bootstrap network. This ensures adequate charge replenishment during continuous high-side conduction at typical switching frequencies up to 200 kHz, given the device's 60 µA typical quiescent VBS supply current (IBSQ).
Does DGD21814S14-13 support independent high-side and low-side enable control?
No - the DGD21814S14-13 uses complementary logic inputs (HIN and LIN) with no dedicated enable/disable pins. Control is achieved by driving HIN/LIN with synchronized or anti-phase signals; dead-time must be implemented externally in the controller. There is no hardware disable function for either channel.
DGD21814S14-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 14-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:
- 14-SO
DGD21814S14-13 FAQ
1.How can I place an order for DGD21814S14-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DGD21814S14-13 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 DGD21814S14-13 reliable?
The price and inventory of DGD21814S14-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DGD21814S14-13 is usually 5 days.
3.What payment methods are accepted for DGD21814S14-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DGD21814S14-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DGD21814S14-13?
DGD21814S14-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DGD21814S14-13 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 DGD21814S14-13?
For technical support, including DGD21814S14-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DGD21814S14-13 requirements.
6.How does Aetrix verify that DGD21814S14-13 is sourced from the original manufacturer or authorized distributors?
All DGD21814S14-13 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 DGD21814S14-13 meets industry standards.
7.What is the process for return or replacement of DGD21814S14-13?
All DGD21814S14-13 units undergo pre-shipment inspection (PSI). If there is an issue with DGD21814S14-13, 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 DGD21814S14-13 part is unused and in its original packaging.
Return procedure for DGD21814S14-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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