Buck Converter Stability Demoboard

The Buck Converter Stability Demoboard (DGN1DEMO-2) is a compact, easy-to-use platform designed to demonstrate and analyze the stability of a dual-buck converter. It generates 1.8 V and 3.3 V from a 3.5 - 5.5 V input, making it ideal for labs, training environments, and anyone who wants to visualize real converter behavior.

Instant setup: Power via USB-C and star measuring-status LEDs confirm proper regulation.

Fully configurable: Switchable input damping, compensation networks, output filters, and load settings.

Perfect for education: Compare "good" vs. "bad" stability configurations and instantly see the impact on gain, phase, or transient response.

Deep insight: Comprehensive test points give you access to every critical node for loop gain, impedance, PSRR, and step-load analysis.

Built for Bode 100/500: Optimized for use with OMICRON Lab's frequency response analyzers.

Delivery: Includes 2 pieces of Buck Converter Stability Demoboard - DGN1DEMO-2

Key Measurements You Can Perform:

• Open-Loop Gain
• NISM (Non-Invasive Stability Measurement)
• Output Impedance
• Input Impedance
• Input-filter Impedance
• PSRR (Power Supply Rejection Ratio)
• Step-load response

Key Features

• Input Voltage: 3.5 V - 5.5 V (USB‑C or lab power supply)
• Dual outputs: 1.8 V and 3.3 V
• Switchable input filter damping
• Selectable compensation networks
• Optional ferrite output filter stages
• Static and dynamic loads (100 mA - 300 mA + 50 mA step)
• Injection-ready feedback path
• Comprehensive test point access
• Notable Frequencies:
  ~10 kHz input filter resonance
  ~20 kHz loop crossover region
  ~170 kHz 1.8 V ferrite filter resonance
  ~730 kHz 3.3 V ferrite filter resonance
  ~1 MHz converter switching frequency