UCC3895PWG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The UCC3895PWG4 is a quad PWM soft-switching controller from Texas Instruments, supporting phase-shift full-bridge topologies with voltage-mode and current-mode control up to 1000 kHz switching frequency. It operates from a 10V to 16.5V supply and features zero-voltage switching (ZVS) to reduce switching losses in high-efficiency power converters. Available in a 20-pin TSSOP package, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- UCC3895PWG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Phase-shift PWM controller with zero-voltage switching (ZVS) support reducing switching losses in full-bridge power converters
- Dual control mode operation supporting both voltage-mode and current-mode PWM for flexible converter design
- High switching frequency capability up to 1000 kHz enabling compact magnetics and reduced filter component size
- Wide input voltage range of 10V to 16.5V making it suitable for telecom and server power supply applications
Applications
The UCC3895PWG4 is designed for use in phase-shift full-bridge DC-DC converters targeting high-efficiency server power supplies, telecom rectifiers, and industrial power systems where minimizing switching losses is critical. It is widely used in isolated DC-DC converters operating at hundreds of watts to kilowatt power levels, where its ZVS capability significantly improves overall conversion efficiency. The device is also suited for uninterruptible power supplies (UPS) and renewable energy inverters requiring precise PWM control with low electromagnetic interference.
Specifications
| YTEOL | 0 |
| Additional Feature | ALSO OPERATES IN CURRENT MODE |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | VOLTAGE-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 16.5V |
| Input Voltage-Min | 10V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Current-Max | 0.1A |
| Output Voltage-Max | 5.06V |
| Output Voltage-Min | 4.94V |
| Output Voltage-Nom | 5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP20,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 6mA |
| Supply Voltage-Nom (Vsup) | 12V |
| Surface Mount | YES |
| Switcher Configuration | PHASE-SHIFT |
| Switching Frequency-Max | 1000kHz |
| Technology | BICMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for UCC3895PWG4:
Switching Controller, Voltage-mode, 0.1A, 1000kHz Switching Freq-Max, BICMOS, PDSO20
Frequently Asked Questions
What switching topology is the UCC3895PWG4 designed for?
The UCC3895PWG4 is optimized for phase-shift full-bridge (PSFB) switching topology, which achieves zero-voltage switching (ZVS) across all four switches. This topology is widely used in high-power isolated DC-DC converters for server power supplies, telecom equipment, and industrial motor drives.
What is the maximum switching frequency of the UCC3895PWG4?
The UCC3895PWG4 supports switching frequencies up to 1000 kHz (1 MHz), enabling designers to use smaller transformer cores, inductors, and filter capacitors. Higher switching frequency reduces the physical size and weight of the power converter while maintaining tight voltage regulation.
Does the UCC3895PWG4 support current-mode control?
Yes, the UCC3895PWG4 supports both voltage-mode and current-mode PWM control, giving designers flexibility in their converter design approach. Current-mode control offers inherent cycle-by-cycle current limiting and improved transient response, while voltage-mode control simplifies compensation design.
What package is the UCC3895PWG4 available in?
The UCC3895PWG4 comes in a 20-pin TSSOP (Thin Shrink Small Outline Package) surface-mount package. The TSSOP-20 form factor offers a compact footprint suitable for high-density power supply PCB designs while providing adequate thermal dissipation for controller-level power dissipation.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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