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Compact Efficient PQ50 High Frequency LLC Transformer Low Loss Stable For UPS

China Compact Efficient PQ50 High Frequency LLC Transformer Low Loss Stable For UPS

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Compact Efficient PQ50 High Frequency LLC Transformer Low Loss Stable For UPS

MOQ： 1K
Price：＄1.35-2.68/pieces
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Topology	LLC Resonant Converter
Switching device	MOSFET or GaN transistors
Delivery Time	7-14 work days (Negotiable)
Operating frequency	above 100 kHz
Payment Terms	T/T
Power range	300 W to 3 kW
Supply Ability	10000pcs
Efficiency	>90%
Input voltage range	85-265 VAC
Certification	UL/cUL Class B/F/H, VDE, CQC
Model Number	PQ50
Brand Name	CHIPSEN
Place of Origin	China

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Product Details
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Product Specification


Topology	LLC Resonant Converter	Switching device	MOSFET or GaN transistors
Delivery Time	7-14 work days (Negotiable)	Operating frequency	above 100 kHz
Payment Terms	T/T	Power range	300 W to 3 kW
Supply Ability	10000pcs	Efficiency	>90%
Input voltage range	85-265 VAC	Certification	UL/cUL Class B/F/H, VDE, CQC
Model Number	PQ50	Brand Name	CHIPSEN
Place of Origin	China
High Light	UPS High Frequency LLC ，PQ50 High Frequency LLC ，Low Loss hf transformer

Compact Efficient PQ50 High Frequency Transformer Low Loss Stable for UPS

The PQ50 is a high frequency ferrite transformer platform developed for compact isolated power conversion. Its PQ core geometry provides a relatively large magnetic cross section and winding area within a compact installation envelope, making it suitable for applications requiring power density, efficiency, controlled leakage inductance, and stable thermal performance.

The image shows two magnetic assemblies installed on a shared base. This may represent a customer-specific transformer assembly rather than one standard PQ50 configuration. The quantity of magnetic components, wiring arrangement, mounting base, and electrical relationship must be confirmed through the approved drawing.

All numerical values below are typical engineering inquiry references rather than guaranteed ratings. Final performance depends on converter topology, input voltage, output requirements, switching frequency, duty cycle, waveform, cooling method, insulation system, and allowable temperature rise.

Industry Applications & Specifications

Industry and Application	Typical Operating Conditions	Parameters Prioritized by Buyers	Typical Inquiry Reference	Chippsen Customization Support
UPS Equipment	Battery supplied full bridge, push pull, half bridge or LLC conversion	Turns ratio, power rating, inductance, leakage, efficiency and overload capability	Approximately 20 kHz to 200 kHz depending on topology	Turns ratio, windings, inductance, terminals, mounting and thermal design
Industrial Power Supplies	Isolated AC/DC and DC/DC switching stages	Power density, DCR, temperature rise, regulation, insulation and dimensions	Approximately 300 W to 3 kW depending on construction and cooling	Core material, conductor type, pinout, shielding and mounting
Energy Storage Systems	Battery converter, PCS and auxiliary power supply	Bidirectional current, RMS current, peak current, efficiency and insulation	Project specific battery voltage and converter power	Custom turns ratio, conductors, inductance, mechanical assembly and protection
Solar Inverters	Isolated DC/DC stage and auxiliary switching supply	High voltage isolation, core loss, leakage inductance and operating life	DC bus and switching conditions defined by the inverter design	Reinforced insulation, shielding, low loss winding and thermal optimization
Industrial Battery Chargers	Isolated charging converter	Charging voltage, current, efficiency, insulation and temperature rise	Application specific battery voltage and charging profile	Multiple outputs, high current conductors, terminals and thermal sensing
EV Charging Equipment	Auxiliary power or isolated DC/DC conversion	Isolation, interwinding capacitance, efficiency, thermal cycling and power density	LLC and phase shifted full bridge converters commonly requested	Low capacitance winding, reinforced insulation and custom pinout
Telecom Power Systems	Rectifier and isolated 48 V DC conversion	Compact size, efficiency, DCR, EMI and continuous reliability	High frequency bridge or resonant conversion	Low loss conductor, shielding and footprint customization
Server Power Supplies	High density isolated converter	Efficiency, leakage inductance, capacitance, thermal performance and height	Frequency and power defined by server power architecture	Low profile winding, pinout, conductors and cooling optimization
Industrial Welding Equipment	High current switching conversion	Peak current, copper loss, leakage inductance and mechanical strength	Pulsed or continuous load according to welding cycle	Parallel wire, litz wire, foil and heavy terminal construction
Medical Power Equipment	Isolated high frequency supply	Leakage current, dielectric strength, capacitance and temperature rise	Parameters defined by equipment safety classification	Reinforced insulation, shielding, testing and documentation
Motor Drives	Isolated auxiliary supply or main DC/DC stage	Multiple outputs, isolation, regulation, EMI and reliability	Input and output conditions defined by drive architecture	Multiple isolated windings, shields and custom connection layout
Automation Equipment	Controller power and isolated industrial converter	Compact footprint, stable output, efficiency and PCB compatibility	Application specific voltage, power and frequency	Pinout, dimensions, output windings, marking and mounting

Customization Parameters

Parameter	Typical Inquiry Reference	Customization Status
Core Platform	PQ50 ferrite core assembly	Customizable
Magnetic Material	MnZn power ferrite selected according to frequency, loss and temperature	Customizable
Converter Topology	Flyback, forward, push pull, half bridge, full bridge, LLC or phase shifted full bridge	Customer Specified
Switching Frequency	Approximately 20 kHz to 300 kHz commonly evaluated	Customer Specified
Power Range	Approximately 300 W to 3 kW depending on topology, cooling and temperature rise	To Be Confirmed
Input Voltage	Minimum, nominal and maximum converter input voltage	Customer Specified
Output Voltage	No load, nominal and full load output voltage	Customer Specified
Turns Ratio	Developed according to voltage waveform, duty cycle and rectification method	Customizable
Primary Inductance	Defined at the agreed frequency, voltage and test connection	Customer Specified
Leakage Inductance	Minimized or intentionally controlled according to converter requirements	Customizable
RMS Current	Continuous RMS current required for each winding	Customer Specified
Peak Current	Maximum repetitive and transient winding current	Customer Specified
DC Resistance	Maximum DCR for each winding at the specified temperature	Customizable
Winding Conductor	Round wire, parallel wire, litz wire, copper foil or combined construction	Customizable
Interwinding Capacitance	Controlled according to EMI and common mode current requirements	Customizable
Insulation System	Basic, supplementary, reinforced or project specific insulation	Customizable
Dielectric Strength	Common inquiries may require approximately 1.5 kV AC to 5 kV AC	Customer Specified
Creepage and Clearance	Defined by working voltage, applicable standard and insulation material	Customer Specified
Insulation Class	Class B, Class F, Class H or project specific system	Customizable
Temperature Rise	Defined according to load, ambient temperature, cooling and enclosure	Customer Specified
Cooling Method	Natural air, forced air, conduction or customer system cooling	Customer Specified
Electrostatic Shield	Single or multiple shielding layers	Optional
Thermal Protection	Thermal fuse, thermostat or temperature sensor	Optional
Pin Configuration	PCB pin quantity, spacing, dimensions and electrical assignment	Customizable
Lead Connections	Lead wires, connectors, terminals or busbar interfaces	Customizable
Mounting	PCB mounting, base plate, bracket or customer specified assembly	Customizable
Impregnation	Varnish impregnation, partial encapsulation or full encapsulation	Customizable
Multiple Component Assembly	Two or more magnetic components installed on a shared base	Optional
Certification	Applicability evaluated for the exact construction and part number	Project Dependent
Marking	Logo, part number, electrical data, batch and traceability code	Customizable
Packaging	Tray, carton or customer specified protective packaging	Customizable

Engineering Information Required for Custom Design

Required Information	Engineering Purpose
Converter Topology	Determines magnetic operation, winding structure and voltage waveform
Minimum and Maximum Input Voltage	Establishes primary turns and operating flux range
Output Voltage and Current	Determines turns ratio, conductor size and output configuration
Continuous and Peak Power	Determines core utilization, winding capacity and thermal requirements
Switching Frequency	Supports core material and conductor selection
Duty Cycle	Required for volt-second and flux density calculations
Primary Current Waveform	Supports RMS loss, saturation and peak current evaluation
Secondary Current Waveform	Supports conductor sizing and thermal calculations
Target Primary Inductance	Controls magnetizing current and converter behavior
Leakage Inductance Limit	Influences resonance, switching stress and power transfer
Maximum DCR	Defines winding conduction loss targets
Interwinding Capacitance Limit	Supports common mode EMI control
Isolation Requirement	Determines insulation barriers, materials, creepage and clearance
Maximum Dimensions	Defines the available footprint, height and winding envelope
Pinout or Wiring Drawing	Ensures compatibility with the customer PCB or harness
Cooling Conditions	Required for realistic power and temperature evaluation
Ambient Temperature	Supports insulation class and thermal margin selection
Applicable Standards	Defines safety, construction, testing and documentation
Annual Demand	Supports material, tooling and production planning

Product Description

The PQ50 high frequency transformer is designed for compact, medium to high power conversion in UPS systems, industrial power supplies, inverters, battery chargers, telecommunications equipment, and renewable energy applications.

Its PQ ferrite core geometry provides efficient utilization of the magnetic cross section and winding window. The structure can accommodate multiple primary and secondary windings, insulation barriers, electrostatic shields, and higher current conductors while maintaining a relatively compact footprint.

Depending on the application, the transformer can use round wire, parallel wire, litz wire, copper foil, or a combined winding structure. Winding sequence can be optimized for leakage inductance, interwinding capacitance, copper loss, insulation, and temperature rise.

The pictured product contains two magnetic assemblies on a common mounting base. Chipsen can provide a single transformer or a customized integrated magnetic assembly according to the customer circuit, mechanical drawing, and wiring requirements.

Product Construction

Construction Element	Description
Magnetic Core	PQ50 MnZn ferrite core selected according to frequency, flux density and loss
Bobbin	High temperature insulating coil former supporting windings and terminals
Primary Winding	Copper wire, foil, litz wire or parallel conductor construction
Secondary Windings	Single or multiple outputs designed according to voltage and current
Insulation Barriers	Tape margins, sleeving, spacers and reinforced barriers where required
Electrostatic Shield	Optional copper or foil shield for common mode noise control
PCB Pins	Solder terminals configured according to the customer PCB
Lead Wires	Optional flexible leads, connectors or heavy current terminals
Core Retention	Tape, adhesive, clamp or customized mechanical fixation
Mounting Base	Optional shared base for multiple magnetic components
Impregnation	Varnish or encapsulation for winding stability and environmental protection
Thermal Device	Optional thermal fuse, thermostat or temperature sensor
Identification	Customized polarity marking, part number, batch and traceability code

Product Characteristics

Compact PQ50 ferrite core geometry
High power density design potential
Suitable for high frequency switching conversion
Low core loss magnetic material options
Low copper resistance winding configurations
Custom primary and secondary voltage ratios
Controlled magnetizing and leakage inductance
High current conductor options
Single or multiple secondary outputs
Reinforced insulation options
Low interwinding capacitance design available
Optional electrostatic shielding
Custom PCB pinout and mounting structure
Optional multi-transformer integrated assembly
Optional thermal sensing and protection
Drawing-based and sample-based replacement development

Applications

Uninterruptible power supplies
Industrial switching power supplies
Industrial power inverters
Solar inverters
Energy storage converters
Battery PCS equipment
Industrial battery chargers
EV charging equipment
High power DC/DC converters
Telecom rectifiers
Server power supplies
Industrial welding equipment
Motor drive power supplies
Automation equipment
Medical power supplies
Full bridge converters
Phase shifted full bridge converters
LLC resonant converters

Quality Control

Chipsen establishes the manufacturing and inspection plan according to the approved electrical specification, mechanical drawing, converter conditions, and customer quality requirements.

Incoming ferrite cores, copper conductors, bobbins, insulation materials, pins, lead wires, adhesives, and protection devices are inspected before production. Winding, insulation, assembly, impregnation, termination, testing, marking, and packaging are controlled through documented procedures.

Inspection Item	Inspection Purpose
Turns Ratio Test	Confirms the required primary and secondary voltage relationship
Primary Inductance Test	Verifies magnetizing inductance at the specified test condition
Leakage Inductance Test	Confirms coupling and converter compatibility
Winding Resistance Test	Evaluates conductor consistency and copper loss
Polarity and Phase Test	Confirms winding orientation and multiple output relationships
Insulation Resistance Test	Evaluates insulation between windings, core, pins and leads
Dielectric Strength Test	Verifies the specified isolation withstand capability
Interwinding Capacitance Test	Available for EMI sensitive applications
Temperature Rise Test	Confirms thermal performance under agreed operating conditions
Load Performance Test	Evaluates voltage, current, loss and efficiency
Core Loss Evaluation	Confirms magnetic performance under the defined waveform
Pin Strength Test	Evaluates the mechanical reliability of PCB terminals
Solderability Test	Confirms compatibility with the agreed soldering process
Lead Pull Test	Evaluates the mechanical strength of lead connections
Dimension Inspection	Verifies footprint, height and mounting dimensions
Impregnation Inspection	Checks material coverage, cleanliness and assembly
Thermal Device Test	Confirms sensor or protector operation where installed
Appearance Inspection	Checks polarity marks, insulation, pins, leads and workmanship
Packaging Inspection	Confirms protection, quantity, orientation and labels

Special medical, automotive, railway, charging and energy storage applications require separate validation plans. Test conditions, limits and sampling requirements must be defined in the approved specification or quality agreement.

Company Profile

Chipsen specializes in the development and manufacturing of custom magnetic components for industrial equipment, power electronics, automation systems, and electrical control applications.

The product range includes high-frequency transformers, low-frequency transformers, planar transformers, power inductors, high-current inductors, toroidal inductors, common-mode chokes, EMI filter magnetics, wireless charging coils, custom coils, and non-standard magnetic components.

Chipsen supports drawing-based development, sample-based replacement development, and application-requirement design. Engineering discussions can cover low DCR, leakage inductance, EMI, insulation, temperature rise, winding structure, footprint, pinout, terminals, protection devices, and production-testing requirements.

The objective is to provide evaluation-ready samples and a clearly defined specification before production approval.

Why Choose Chipsen

PQ50 high frequency transformer customization
Compact high power density magnetic design
Engineering evaluation based on actual converter conditions
Drawing based and sample based replacement development
Custom turns ratio, inductance, leakage and DCR
Round wire, litz wire, copper foil and parallel winding options
Reinforced insulation and controlled creepage design
Low capacitance and electrostatic shielding options
Customized PCB pinout, leads and mounting base
Single transformer and multiple component assembly options
Temperature rise and magnetic loss optimization
Optional thermal sensing and protection
OEM and ODM customization
MOQ from one piece for eligible sample projects
Quotation target within three working days after complete requirements are received
Sample production target within seven days for eligible designs after technical confirmation
Five year warranty with extended warranty evaluation for special industries
Extended warranty is subject to application validation and written agreement
Electrical and mechanical testing based on approved specifications
Clear drawing and specification approval before mass production

Frequently Asked Questions

What information is required to customize a PQ50 transformer?

Please provide the converter topology, input voltage range, output voltage and current, continuous and peak power, switching frequency, duty cycle, current waveform, target inductance, leakage limit, insulation requirement, dimensions, cooling conditions, pinout, and annual demand.

What power can a PQ50 transformer handle?

Approximately 300 W to 3 kW is a broad inquiry reference rather than a guaranteed rating. Actual capacity depends on topology, switching frequency, flux density, winding design, cooling, ambient temperature, efficiency target, and allowable temperature rise.

What is the advantage of a PQ core?

A PQ core provides a relatively large magnetic cross section and winding window within a compact geometry. This can support high power density, efficient winding arrangements, and reduced overall converter size.

Can the PQ50 be used in an LLC converter?

Yes. A PQ50 transformer can be developed for LLC resonant conversion. The resonant frequency range, turns ratio, magnetizing inductance, leakage inductance, gain requirement, and load range must be provided.

Can leakage inductance be customized?

Yes. Leakage inductance can be minimized for efficient coupling or intentionally controlled for resonant operation. The required value, tolerance, frequency, and test connection must be specified.

Can the transformer use litz wire or copper foil?

Yes. Round wire, parallel wire, litz wire, copper foil, and combined winding structures can be evaluated according to frequency, current, loss, winding space, and termination requirements.

Can multiple secondary outputs be provided?

Yes. Multiple isolated or connected secondary windings can be developed when winding space, power distribution, insulation, and thermal requirements permit.

Can Chipsen produce the two transformer assembly shown in the image?

Yes. A customized assembly using multiple magnetic components on a shared mounting base can be evaluated. The electrical relationship, wiring diagram, dimensions, mounting points, and mechanical requirements must be provided.

Can interwinding capacitance be reduced?

Yes. Winding sequence, insulation spacing, sectional construction, and electrostatic shielding can be optimized. Reducing capacitance may affect leakage inductance, dimensions, and thermal performance.

Can the PCB pin arrangement be customized?

Yes. Pin quantity, spacing, diameter, position, polarity, and electrical assignment can be developed according to the customer PCB drawing.

Can high voltage isolation be provided?

Yes. Reinforced insulation, suitable barriers, creepage, clearance, and dielectric testing can be incorporated according to working voltage and the applicable safety standard.

Can Chipsen develop a replacement from a physical sample?

Yes. The sample can be evaluated for dimensions, turns ratio, inductance, DCR, winding arrangement, pinout, and assembly. Actual converter operating conditions are still required.

Can samples be produced within seven days?

Seven day sample production is a target for eligible designs after the drawing, electrical requirements, materials, and test conditions are confirmed. Special tooling or materials may require additional time.

Are the specifications on this page guaranteed?

No. They are typical engineering and purchasing references. Only values confirmed in the approved drawing, product specification, and validation documentation are guaranteed for the final product.

Company Details

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Business Type:

Manufacturer 
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Year Established:

2007 
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Total Annual:

28820000-29820000
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Employee Number:

400~450 
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Ecer Certification：

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Chipsen Electronics - Supplier to Fortune Global 500 Companies Magnetic Components Engineered for Performance & Reliability Founded in 2007, Dongguan Chipsen Electronics Technology Co., Ltd. is a professional manufacturer specializing in magnetic components and micro switches. ... Chipsen Electronics - Supplier to Fortune Global 500 Companies Magnetic Components Engineered for Performance & Reliability Founded in 2007, Dongguan Chipsen Electronics Technology Co., Ltd. is a professional manufacturer specializing in magnetic components and micro switches. ...

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Dongguan Chipsen Electronics Technology Co., Ltd.
No. 234, Changhuang Road, Changping Town, 523586, Dongguan, Guangdong, China
https://www.chipsen.net/

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