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Technical Centre
Digital Power FAQ
Select question from the list below or return to faq categories.
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What’s all this stuff about 'Digital Power'?
Digital Power covers digital control (internal regulation) and digital power management (external control/communication). Learn the key distinctions, benefits, and why the industry is adopting these approaches—click below for full article.
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What is Digital Control?
Digital control replaces analogue regulator ICs with programmable digital ICs, offering advanced diagnostics, efficiency gains and flexible control—while considering current cost and potential noise tradeoffs. Click below for full explanation.
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What is Digital Power Management?
Digital Power Management enables external control and communication between power supplies and a master controller (e.g., PMBus, Z‑One), offering diagnostics and remote programming—note compatibility and legal risks.
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What is Digital Power In Summary?
Digital Power offers advanced features, but most applications still favor proven analogue solutions. Learn the cost–benefit, performance tradeoffs, and when digital adoption becomes worthwhile.
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What is Fold-Back Current Limiting?
Fold‑back current limiting protects supplies during overloads by reducing output current and voltage after a peak “knee.” Common in linear supplies but may latch with heavy capacitive loads.
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What is Fold-Forward Current Limiting?
Fold‑forward current limiting lowers output voltage during overloads while permitting higher current to start motors or charge capacitive loads; recovery is typically automatic—click below for full explanation.
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What is Constant Current Limiting?
Constant‑current limiting holds output current at its limit during overloads while voltage drops, protecting the supply; normal operation resumes automatically once the overload clears. Click to view examples and recovery behaviors.
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What is Current Limit Shutdown?
Current‑limit shutdown trips the supply if overload drives output below a preset voltage—protecting equipment but potentially needing manual reset. Learn typical behaviors, recovery methods and design implications.
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What is Hiccup Mode Current Limiting?
Hiccup‑mode limits protect supplies by cycling the output off then retrying during overloads, preventing damage; normal operation resumes when the fault clears. Click below for typical behaviors and recovery details.
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What are Peak-Current Power Supplies?
Peak-current power supplies deliver short-duration surges (200–300% of rated current) to start motors, drives and actuators—read about their advantages, average‑power limits, and selection guidance by following the link below.
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