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UCC25600-DESIGN-CALC — UCC25600-DESIGN-CALC
Excel-based Calculator Tool for LLC design with UCC25600
Data sheet
UCC25600
- Variable switching frequency control
- Programmable minimum switching frequency with 4% accuracy (3% accuracy at temperature range: –20°C to 105°C)
- Programmable maximum switching frequency
- Programmable dead time for best efficiency
- Programmable soft-start time
- Easy ON and OFF control
- Overcurrent Pprotection
- Overtemperature protection
- Bias voltage UVLO and overvoltage protection
- Integrated gate driver with 0.4-A source and 0.8-A sink capability
- Operating temperature range: –40°C to 125°C
- SOIC 8-Pin package
The UCC25600 high performance, resonant mode controller is designed for dc-to-dc applications using resonant topologies, especially the LLC half-bridge resonant converter. This highly integrated controller implements frequency modulation control and complete system functions in only an 8-pin package. Switching to the UCC25600 will greatly simplify the system design and layout, and improve time to market, all at a price point lower than competitive 16-pin device offerings.
The internal oscillator supports the switching frequencies from 40 kHz to 350 kHz. This high-accuracy oscillator realizes the minimum switching frequency limiting with 4% tolerance, allowing the designer to avoid over-design of the power stage and, thus, further reducing overall system cost. The programmable dead time enables zero-voltage switching with minimum magnetizing current. This maximizes system efficiency across a variety of applications. The programmable soft-start timer maximizes design flexibility demanded by the varied requirements of end equipment using a half-bridge topology. By incorporating a 0.4-A source and 0.8-A sink driving capability, a low cost, reliable gate driver transformer is a real option.
The UCC25600 delivers complete system protection functions including overcurrent, UVLO, bias supply OVP, and overtemperature protection.
Technical documentation
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Evaluation board
UCC25600EVM — LLC Resonant Half-Bridge Converter 300-W Evaluation Module
The UCC25600 evaluation module, EVM (HPA341), is a 300 W LLC resonant half-bridge converter, providing a regulated output voltage nominally at 12 V at maximum 300 W of load power with reinforced isolation of AC-DC off-line application between the primary and the secondary, operating (...)
User guide: PDF
Reference designs
PMP9640 — 310W PSU Using Transition Mode Bridgeless PFC and LLC-SRC - Reference Design
High efficiency, high power factor and reliable power supply are the main focus of the PMP9640 design for motor driver applications. Low cost analog transition mode (TM) PFC controller UCC28051 has been used for bridgeless PFC as the first conversion stage of the PMP9640. LLC series (...)
Reference designs
PMP11282 — High Efficiency 410W AC/DC Power Supply Reference Design
PMP11282 is a high-efficiency AC/DC power supply reference design with universal AC input and 24V/17A output. Interleaved transition mode PFC and LLC series resonant converter is applied for 24V/17A main power. A PSR Flyback with MOSFET integrated controller is applied as the auxiliary supply. (...)
Reference designs
PMP20694 — High Efficiency 180W AC/DC Power Supply Reference Design
PMP20694 is high-efficiency AC/DC power supply reference design with 85VAC-300VAC input and 36V/5A output. Transition mode PFC is applied with UCC28051 to prove high power factor and boost input voltage to 450VDC. LLC resonant converter with UCC25600 is applied to step down the 450V to 36V (...)
Reference designs
PMP9750 — 400VDC Input to 28V/9A Output Compact, High Efficiency CLL Resonant Converter Reference Design
PMP9750 is a CLL resonant converter reference design with 400VDC input and 28V/9A ouput. Unlike LLC series resonant converter, CLL resonant converter used in PMP9750 utilizes its output inductor to minimize the size of the resonant tank. With resonant controller UCC25600 and bridge driver UCC27714, (...)
Reference designs
PMP8920 — High-Eff 2Stage Univ Input Pwr Supply Using Trans Mode PFC/LLC Resonant Conv Reference Design
Low EMI, high efficiency, high power factor and reliable power supply are main focus of the PMP8920 design for telecom applications. Transient mode (TM) power factor correction (PFC) with UCC28051 and LLC series resonant converter (SRC) with UCC25600 are applied in PMP8911. In addition, (...)
Test report: PDF
Reference designs
PMP10375 — 335W Single Stage LLC-SRC Converter Reference Design
The PMP10375 reference design is a single stage LLC series resonant converter (SRC), producing up to a 335W output using UCC25600 resonant controller. With the use of single stage LLC-SRC, the converter efficiency goes up to 90% at 335W full output power with 120VAC input.
Reference designs
PMP9739 — 250W Single Stage LLC-SRC Converter Reference Design
The PMP9739 is a single stage LLC series resonant converter (SRC), producing up to a 250W output using UCC25600 resonant controller. With the use of single stage LLC-SRC, the converter efficiency goes up to 89% at 250W full output power.
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
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