SMPS400A180 Switched-Mode Power Supply The SMPS400 is a high-efficiency Safety Class 2 switch mode power supply developed for use with UcD™ amplifier modules. It is intended for audio applications where compact size, low weight, and stable power delivery across a wide load range are important.
The power supply features overcurrent protection that lowers the output voltage during temporary overload conditions. If the overload continues, the unit switches into hiccup mode and stays there until the fault is cleared. This behavior, along with the use of large electrolytic buffer capacitors, helps support short-term peak power delivery to the connected amplifier module.
The SMPS400 also includes an auxiliary isolated supply and a control interface designed to work with UcD amplifier modules. Built-in actuators allow the power supply to be enabled during normal use or shut down if a fault condition occurs.
Its design places strong emphasis on low radiated and conducted electromagnetic interference. The topology and layout have been optimized to satisfy EMI requirements commonly associated with professional audio applications.
The SMPS400 supports a selectable input voltage range, allowing it to operate with different mains supply specifications. This makes it suitable for international use across a variety of power grid standards.
As a 2-quadrant full bridge rectifier, the SMPS400 can supply single-ended Class D amplifiers.
The SMPS400 meets applicable safety and performance standards and is certified for use in professional audio equipment.
Highlights
High efficiencySmall form factorLow EMI Designed to fit in a 1HE rack spaceFeatures
2-quadrant full bridge rectifierSelectable input voltage rangeExternal controlled operation3 variants available: / / Protections
This product is sold brand new. A manufacturer warranty applies only when the manufacturer provides one for this item.
Return requests must be submitted within 14 days of delivery and approved by our RMA department before the item is shipped back. Non-defective returns may be subject to a minimum 25% restocking fee and return shipping charges. Unauthorized returns are not eligible for credit or refund. Read the full return policy.
Advanced Overcurrent protectionOver temperature protectionDC detection input
Possible ApplicationsActive Loudspeakers, for home and professional usePower Amplifiers, for home and professional useLine Array and Immersive SystemsHome Theatre SystemsMultichannel Power AmplifiersSpecificationsOutput Power: 400W - 20Hz into amplifier load Output Voltage Main: 2 x 35 (Min), 2 x 46 (Typ), 2 x 53 (Max) Vdc - Proportional to AC Mains Output Voltage Vaux: 2 x 16 (Min), 2 x 21 (Typ), 2 x 24 (Max) Vdc - Proportional to AC Mains Output Current Vaux: 500 mA Automatic input voltage selection: No, Selectable with jumperMains voltage input: 230V / 115VFamily: SMPS Family
Product ApplicationsHypex Direct products can be used in a wide range of DIY applications. Explore the different examples within each application category to help find the right solution for your project.
PreamplifiersA preamplifier boosts low-level signals up to line level, which is the standard operating level required by your power amplifier. That means a preamp is needed for nearly any audio source. In addition to raising low-level signals, a preamplifier also manages source switching and volume control for line-level inputs.
Examples of available preamplifier solutions:
Available solutions
Switch Mode Power Supply Notes
Included Fully analogue, modular design, discrete op-amps
＋ Included Analogue and digital, modular design, discrete op-amps Mono Power AmplifierA mono power amplifier is a self-contained single-channel amplifier unit with its own dedicated power supply and matched amplifier section. Mono power amps are often regarded as one of the best ways to build a high-quality amplifier system. They are commonly used in Hi-Fi and high-end audio systems, but they can also serve in musical instrument amplifier applications.
Examples of available mono power amplifier solutions:
Output Power (4Ω) Available solutions Switch Mode Power Supply Notes 525WIncluded
180W ＋
400W ＋
525W ＋
800W ＋ No DC error protection 1150W ＋
Stereo / Dual Power AmplifierA dual power amplifier contains two power supplies and two amplifier channels, with each channel running from its own dedicated power supply. Both the power supplies and amplifier sections are housed within a single enclosure. A stereo power amplifier uses one power supply to run two amplifier channels within the same enclosure.
Examples of available stereo / dual power amplifier solutions:
Output Power (4Ω) Available solutions Switch Mode Power Supply Notes 300 + 300WIncluded 1 pcs for a stereo setup 2 x 525W Included 2 pcs for a stereo setup 180 + 180W ＋ for a stereo setup 300 + 300W ＋ for a stereo setup 400 + 400W
＋ No DC error protection 1150W + 1150W
＋ 2 pcs for a stereo setup Multi Channel Amplifier & Immersive AudioA multichannel amplifier houses multiple amplifier channels within a single enclosure. Common multichannel designs include 4, 8, 16, or even 24 channels. Most use a single power supply, though some models may include two or more power supplies depending on the number of channels and the power demands.
Examples of available multichannel amplifier solutions:
Output Power (4Ω) Channels Available solutions Switch Mode Power Supply Notes 150W 8＋ No DC error protection180W2 ＋
180W4＋ No DC error protection 180W 6 ＋ No DC error protection 300W2 ＋
300W4 ＋
400W 2 ＋ No DC error protection 400W4 ＋ No DC error protection 400W 6 ＋ No DC error protection, reversing phase for half of the UcD400 modules 400W 8 ＋ No DC error protection, reversing phase for half of the UcD400 modules
This product is sold brand new. A manufacturer warranty applies only when the manufacturer provides one for this item.
Return requests must be submitted within 14 days of delivery and approved by our RMA department before the item is shipped back. Non-defective returns may be subject to a minimum 25% restocking fee and return shipping charges. Unauthorized returns are not eligible for credit or refund. Read the full return policy.