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The HP1800 is a PWM phase-doubler: it turns one tri-state PWM input into four complementary outputs for two phases, interleaved by 180 degrees. Hynetek presents it as a way to reuse a conventional multiphase controller in a single-stage 48 V-to-ultra-low-voltage power topology. It is not a complete converter, a multiphase controller, or a guarantee of the efficiency figures Hynetek reports.
What the HP1800 does in a 48 V power system
A conventional processor power path can step a 48 V bus down to 12 V with an intermediate bus converter (IBC), then use a multiphase buck point-of-load converter to produce the processor’s core voltage. Hynetek describes an alternative: a single-stage half-bridge current-doubler rectifier (HBCD) that converts 48 V directly to an ultra-low output.
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In that arrangement, the HP1800 handles PWM signal logic. It expands a controller’s single tri-state PWM signal into four complementary signals that form two phases interleaved at 180 degrees. Hynetek says this can allow a controller used in the conventional second-stage design to drive the new topology without adding PWM channels.
The distinction matters: the HP1800 does not perform the voltage conversion itself. The external multiphase controller, gate drivers, switching devices, magnetic components, and a complete circuit implementation are still required. Hynetek’s example identifies the HP3010, a 120 V/3 A half-bridge driver, and the HP3000, a 30 V/5 A dual-channel low-side driver, as devices driven by the HP1800 outputs; the controller remains external.
#1 Best Overall
- The power module adopts double-sided PCB design, and the performance is more stable and more reliable. It is suitable for power supply of civil or industrial control systems.
- The power supply is small in size, high power, and output power up to 240W / Peak 5A .Long-time work recommended output 4A/200W
- Input voltage: AC 120V 100 - 240V 50/60HZ (wide voltage input, suitable for various use environments).
- Output voltage: DC48V ( ± 0.5V). Output current: 4A / Peak 5A. Ripple noise: ≤200MV.
- Product size: 11.5x6.5x3.5cm (LxWxH). Compact and with indicator light.
What voltage range and application does Hynetek describe?
Hynetek describes ultra-low outputs from 0.6 V to 3.3 V and illustrates conversion from 48 V to 1.0 V. These are application descriptions, not a guarantee that every output voltage, load current, or system design is supported by the HP1800 alone. Output capability depends on the surrounding controller and power-stage design.
HP1800 specifications and signal behavior
| Item | Hynetek-reported detail |
|---|---|
| Package | DFN2x2-8L, also described as DFN-8L |
| Maximum VCC | 7 V |
| Switching frequency range | 200 kHz–2 MHz |
| PWM input | Tri-state; a high-impedance input state is used to stop PWM outputs |
| Initial dead time | Configurable independently for the complementary pairs using pull-down resistors at PWM1 and PWM4 |
| Operating temperature | −40°C to 125°C |
Hynetek also describes input-transition and interference handling intended to reduce abnormal complementary timing and the risk of shoot-through. That is a stated protection feature, not a guarantee against every fault and not a substitute for validating dead time, switching behavior, thermal performance, and fault handling in the actual design.
Rank #2
- Voltage input: AC 100-240V, Output voltage: DC 48V, Output power: 200W
- Overall size: 11.4*6.5*3.5 cm
- Made of double-sided PCB, good more stability and reliability; more suitable for power supply in industrial control systems
- Multi-protections: the power supply has overcurrent protection, overload and short circuit protection
- Perfectly designed and well constructed, small and compact Size with an indicator
What efficiency and size benefits are claimed?
In its 2026 comparison, Hynetek reports 90–92% peak operating-point efficiency for single-stage conversion, approximately 86% typical end-to-end efficiency for the conventional two-stage path after distribution and parasitic losses, up to roughly 75% less active conversion area, and around 40% fewer components. These are company-published architecture comparison figures, not guaranteed HP1800 performance or independently verified results for a particular design.
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1Scan for outdated or missing drivers - takes under a minute2Clear out junk files and repair common Windows errors3Fix the driver behind crashes, sound loss and screen glitchesHynetek’s 2025 article gives different rounded comparison estimates: approximately 87% for two-stage system efficiency and typically more than 90% for single-stage efficiency. Those figures come from a separate company article and should not be combined with the 2026 estimates into a more precise number.
Rank #3
- Input voltage range is AC110-220V, output voltage range is DC 0-48V adjustable, output current can't be adjusted and it is up to your load, maximum output current is 10A, so this item will not fit for your device with over 10A current.
- Equipped with temperature control cooling fan: it will automatically operate when this power converter need to be cooled without any noise.
- LED display shows you real-time voltage, which makes it more convenient for you to adjust voltage. Case Material: Metal; Main Color: Silver Tone. Widely used in Industrial automation, Radio, Broadcasting, LED display, communications, Security cameras, Lighting, Computer.
- Adjustable DC Power Voltage Converter, ACEIRMC AC 110V-220V to DC 0-48V Module Switching Power Supply Digital Display 480W Voltage Regulator Transformer Built in Cooling Fan
- Note: the default input voltage is 220V, before using, please switching the input voltage to 110V/220V according to your city voltage.
The reviewed Hynetek material does not provide a reproducible test setup, measured curves, specified load conditions, or independent verification adequate to apply those figures to a specific implementation. EE Times published the 2026 article as Hynetek partner content, so it is not independent confirmation. Treat the numbers as the manufacturer’s claims to investigate against your own design requirements.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How to decide whether this topology fits a design
A single-stage path may remove an intermediate conversion stage, but the right choice depends on system-level performance rather than stage count alone. Compare the two architectures under matched operating conditions and load profiles, and resolve these design questions:
Rank #4
![JoyNano DC 48V 5A Switching Power Supply 240W AC-DC Converter Transformer for Brake Machine Industrial Automation CNC Stepper Motor and More [Upgraded Version]](https://m.media-amazon.com/images/I/41oS2ZK82YL._SL160_.jpg)
- Converts AC voltage to 48V DC with more sufficient power. LED Indicator.
- Output Current 0-5 Amp, Power 240 Watt Max. Efficiency more than 80%.
- Smart device surge protection for Shortage Protection, Overload Protection, Over Voltage Protection.
- Widely used in Industrial automation, LED module, communications, CNC Stepper, etc
- Perfectly designed and well constructed, more stability and reliability.
- Efficiency: What is measured 48 V-to-load efficiency across the expected load range, rather than at one peak operating point?
- Output and current: Does the complete power stage meet the target core voltage, load current, and transient-response requirements?
- Distribution: How do distribution losses and parasitics affect the existing two-stage path and the proposed single-stage layout?
- Area and components: What are the actual magnetic-component count, total board area, and active conversion area in the intended implementation?
- Control and switching: Can the existing controller provide the necessary signal behavior, and are switching frequency, thermal limits, and EMI manageable?
- Protection and validation: What faults must the design handle, and are there validated reference designs and test data for the intended operating conditions?
The published comparison material does not provide matched, independent measurements that settle these questions. The HP1800’s stated role is narrower and clearer: it generates the two-phase complementary PWM signals needed by the described HBCD topology, potentially avoiding a requirement for additional controller PWM channels.
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Best Value
- 【Volt Adjustment】 Input Voltage can be 110V or 220V. Wide adjustable output Voltage range: DC 0-48V. This supply is suitable for 5V 9V 12V 24V 30V 36V 48V devices. The voltage precision is 0.1V. Note——The maximum current is 10A. But the actual current is depended on the load. No matter how many voltage is adjusted, the current is 10A and can not be regulated. It can be used to device of 2A 3A 5A 10A. Make sure to use the devices which is below 10A.
- 【Hareware】 This Buck Converter is equipped with LED screen, heat sink and cooling fan. The LED screen can clearly display the output voltage. Heat sink and cooling fan can control the temperature in a safe range. During the running power is high, the cooling fan will automatically activate with little noise.
- 【Easy Operation】 This supply is no need to install, after connecting wire, it can be used to adjust output, which is convenient. The potentiometer is inset into the supply. Only to rotate the potentiometer can adjust output parameter.
- 【Protection】 Over Load Protection, Over Voltage Protection, Short Circuit Protection, which can protect your device from damage. Note: the default input voltage is 220V, before using, please switching the input voltage to 110V/220V according to your city voltage.
- 【Wide Application】 This power supply has variable application. It can be used as a 5V 12V 24V 30V 36V 48V power supply for RV, Car, Labtop, Computer, Lab, CCTV, etc. All of our item has 1 year long time warranty guarantee.
Sources
- Hynetek, “HP1800: The Magic of Single-Stage 48V to Ultra-Low Voltage,” published August 31, 2026.
- Hynetek, “New Solution for Computing Power Supply Challenges,” published November 10, 2025.
- EE Times, “HP1800: The Magic of Single-Stage 48V to Ultra-Low Voltage,” published August 24, 2026 as Hynetek partner content.
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