Diodes Incorporated DGD2103AS8-13

Overview

DGD2103AS8-13 from Diodes Incorporated is a high-voltage, high-speed half-bridge gate driver IC designed to drive N-channel MOSFETs and IGBTs in switching power stages. It features 600V high-side bootstrap operation, 210mA source / 360mA sink output current, and a fixed 520ns internal deadtime. It operates across –40°C to +125°C and interfaces with 3.3V–5V logic in DC-DC converters and motor control inverters.

For engineers reviewing the DGD2103AS8-13 datasheet, DGD2103AS8-13 pinout, DGD2103AS8-13 application, or DGD2103AS8-13 equivalent, key selection criteria include high-side floating voltage capability (VS up to 600V), logic-level compatibility down to 3.3V, output current asymmetry (210mA/360mA), deadtime tolerance (400–650ns), and SO-8 (Type TH) thermal derating (200°C/W).

Technical Context

The DGD2103AS8-13 integrates independent high-side and low-side drivers with Schmitt-triggered TTL/CMOS-compatible inputs (HIN/LIN*), enabling robust noise immunity in noisy power-conversion environments. Its bootstrap architecture supports high-side operation up to 600V with dVS/dt tolerance of 50V/ns, and internal undervoltage lockout protects both VCC (8.2V threshold) and high-side supply paths.

It implements fixed deadtime (520ns typ.) between HO and LO transitions to prevent shoot-through, while maintaining fast propagation delays (680ns tON at VS = 0V; 220ns tOFF at VS = 600V) and tight delay matching (≤60ns). Output rise/fall times are optimized for 1000pF loads (100–170ns tR; 50–60ns tF), supporting high-frequency switching up to several hundred kHz.

Key Specifications

Pinout & Package

Package: SO-8 (Type TH), surface-mount, lead-free, RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar half-bridge gate driver applications.

Compared with IRS21844STRPBF and LM5109BMAX/NOPB, the DGD2103AS8-13 offers balanced 600V capability and integrated deadtime at lower cost and smaller footprint, making it optimal for mid-voltage industrial and consumer power stages where simplicity and thermal robustness are prioritized over ultra-high drive current or extreme voltage margin.

Availability

DGD2103AS8-13 is available at Aetrix Electronics and suitable for DC-DC converters, motor controls, and AC-DC power supplies requiring stable component supply and extended temperature operation.

Supply support for DGD2103AS8-13 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 for industrial, computing, and consumer markets.

The DGD2103AS8-13 belongs to Diodes' high-voltage gate driver product line, engineered for cost-effective, thermally robust half-bridge control in non-automotive power conversion applications where design simplicity and extended temperature range are critical.

FAQ

What does "NOT RECOMMENDED FOR NEW DESIGN" mean for DGD2103AS8-13?

This designation indicates Diodes Incorporated has introduced newer-generation alternatives (e.g., DGD2103M) with improved specs or packaging, but the DGD2103AS8-13 remains fully manufactured, stocked, and supported. It is appropriate for legacy designs, cost-sensitive projects, and applications where its 600V rating and 520ns deadtime meet requirements without needing enhanced features.

Can DGD2103AS8-13 drive IGBTs directly without external components?

Yes - its 360mA sink and 210mA source capability, combined with negative transient tolerance and 600V VS rating, allow direct gate driving of medium-power IGBTs (e.g., up to 50A/600V) in half-bridge configurations. No external gate resistors are mandatory, though layout-optimized gate resistors are recommended for EMI control and switching speed tuning.

How is the 520ns deadtime implemented, and is it adjustable?

The 520ns deadtime is fixed and internally generated using matched delay elements within the driver's logic path - it cannot be adjusted externally. This eliminates timing uncertainty from external RC networks and ensures consistent shoot-through prevention across temperature and voltage variations, at the trade-off of flexibility in deadtime optimization.

What PCB layout considerations are critical for reliable high-side bootstrap operation?

Key layout practices include placing the bootstrap capacitor (typically 0.1µF–1µF ceramic) as close as possible to VB and VS pins, using short low-inductance traces for the high-side return path, separating high-dV/dt VS routing from sensitive logic traces, and ensuring adequate creepage/clearance (>3mm) between VB/VS and low-side nets per IEC 60950-1 for 600V operation.