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SEGGER Microcontroller GmbH

SEGGER Target Supply Adapter - Adjustable Power Supply for J-Link Debug Probes

SEGGER Target Supply Adapter - Adjustable Power Supply for J-Link Debug Probes

Provides adjustable 0.8V-3.6V power supply for target boards whilst maintaining full debug signal integrity.

SKU: 8.06.18

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Key Features

Adjustable Voltage Output
High Current Capability
Transparent Signal Path
MCP1826T LDO Regulator
Visual Power Indication
Universal J-Link Compatibility
No External Power Required

Overview

The SEGGER Target Supply Adapter (8.06.18) eliminates the need for separate power supplies during embedded system debugging by providing clean, regulated power directly from your J-Link debug probe. With its default 3.3V output at 400mA, this adapter suits the majority of modern microcontroller applications whilst offering flexibility for custom voltage requirements through simple resistor modification.

Engineered for reliability, the adapter features the MCP1826T LDO voltage regulator and maintains complete electrical isolation between power and debug signal paths. The integrated power LED provides immediate visual confirmation of output status, whilst the robust 20-pin connector system ensures reliable connections in demanding development environments.

Perfect for engineers developing battery-powered IoT devices, sensor networks, and embedded systems requiring precise power control during debugging and programming operations.

Compatible with all SEGGER J-Link debug probes and Flasher programming tools, this adapter integrates seamlessly into existing development workflows whilst providing the power supply flexibility essential for modern embedded development.

Downloads

Eliminates External Power Supplies

Single adapter provides both debug connectivity and target power in compact form factor

Flexible Voltage Requirements

Adjustable output accommodates diverse microcontroller voltage specifications from legacy 5V to modern 0.8V designs

Professional Debugging Reliability

SEGGER's proven hardware design ensures stable power delivery without compromising debug signal integrity

Adjustable Power Supply Solution for J-Link Debug Systems

The SEGGER Target Supply Adapter (8.06.18) provides engineers with a reliable, adjustable power supply solution for embedded debugging applications. This compact adapter seamlessly integrates between your J-Link debug probe and target hardware, delivering precisely regulated voltage whilst maintaining full signal integrity across all debug connections.

Technical Specifications

Parameter Specification
Input Connector 20-pin 0.1" (2.54mm) socket for J-Link
Output Connector 20-pin 0.1" (2.54mm) header to target
Default Output 3.3V @ 400mA
Voltage Range 0.8V to 3.6V (adjustable via resistor)
Voltage Regulator MCP1826T LDO
Power LED Visual indication of output status

Current Output Capabilities

Output Voltage Maximum Current
3.6V 400mA
3.3V (default) 400mA
2.5V 300mA
1.8V 200mA
1.0V 150mA
Note: Voltage adjustment requires changing a single SMD 0805 resistor. Exceeding specified current values may damage the adapter.

Compatible Debug Probes

The adapter maintains full compatibility with the complete SEGGER debug probe family:

  • J-Link Pro PoE and J-Link Pro
  • J-Link ULTRA+ and J-Link WiFi
  • J-Link PLUS (Classic and Compact variants)
  • J-Link BASE (Classic and Compact variants)
  • Flasher Portable and Flasher ARM

Pin Configuration

The adapter provides transparent pass-through of all debug signals with power delivered via pin 19 of the debug cable. All JTAG, SWD, and auxiliary signals maintain 1:1 connectivity ensuring complete debugging functionality.

[Product connection diagram showing J-Link to Target Supply Adapter to target board]

Installation and Setup

The Target Supply Adapter requires no external power source or configuration software. Simply insert the adapter between your J-Link debug probe and the debug cable connection to your target hardware. The adapter draws power directly from the J-Link probe, making it ideal for portable debugging solutions.

Frequently Asked Questions

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  • Can this adapter power multiple target boards simultaneously?

    The adapter is designed for single target applications. For multiple targets, consider individual adapters or higher-current solutions like the 5V Target Supply Adapter.

  • What connector type does the adapter use?

    The adapter uses standard 20-pin 0.1" (2.54mm) IDC connectors - socket for J-Link connection, header for target connection.

  • How does the power LED indicate adapter status?

    The integrated LED illuminates when the adapter is providing power to the target, offering immediate visual confirmation of operational status.

  • Is any configuration software required for the adapter?

    No software configuration is needed. The adapter operates immediately upon connection between your J-Link probe and target hardware.

  • Can I use this adapter with battery-powered J-Link probes?

    Yes, though some battery-powered probes like Flasher Portable may require additional resistor adjustment (SMD 1206) for optimal operation.

  • What is the maximum current capability at lower voltages?

    Current capability decreases with voltage: 1.8V provides 200mA maximum, 1.0V provides 150mA maximum. Exceeding these limits may damage the adapter.

  • Does the adapter affect debug signal quality or timing?

    No, the adapter maintains 1:1 connectivity for all debug signals with transparent pass-through, ensuring no impact on JTAG, SWD, or SWO functionality.

  • Which J-Link debug probes are compatible with this adapter?

    The adapter works with all SEGGER J-Link models including Pro, ULTRA+, PLUS, BASE variants, and Flasher programming tools.

  • How do I adjust the output voltage for different target requirements?

    Voltage adjustment requires replacing a single SMD 0805 resistor on the adapter. The range extends from 0.8V to 3.6V with corresponding current limitations.

  • What voltage does the Target Supply Adapter provide by default?

    The adapter provides 3.3V at up to 400mA by default, suitable for most ARM Cortex-M and similar microcontroller applications.

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