PUCC28780D Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The PUCC28780D is an active clamp flyback (ACF) switching controller IC from Texas Instruments designed for high-efficiency isolated power supplies. It integrates synchronous rectification control and supports valley switching to achieve over 90% efficiency in adapter and charger applications.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- PUCC28780D Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Active clamp flyback topology with integrated synchronous rectification control
- Valley switching for high efficiency exceeding 90% in typical adapter designs
- Small Outline package (SOP) for compact isolated power supply layouts
- Wide input voltage range support for universal AC-DC adapter designs
- Advanced protection features including over-current and over-voltage protection
Applications
PUCC28780D is primarily used in high-efficiency USB-C power delivery adapters, laptop chargers, and industrial SMPS where active clamp flyback topology is selected to meet DOE6 and CoC Tier 2 efficiency standards. It is also applied in 5 V to 20 V multi-output isolated supplies for telecom and industrial equipment requiring low no-load power consumption.
Specifications
| Date Of Intro | 2017-11-15 |
| YTEOL | 0 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for PUCC28780D:
Switching Controller, Current-mode, 1000kHz Switching Freq-Max, BICMOS, PDSO16
Frequently Asked Questions
What switching topology does PUCC28780D implement and how does it improve efficiency versus a standard flyback controller?
PUCC28780D implements an active clamp flyback (ACF) topology, which recycles the leakage inductance energy that a passive clamp wastes. This enables zero-voltage switching (ZVS) and reduces switching losses, pushing peak efficiency above 90% in 65 W USB-C adapter designs compared to roughly 85% for a conventional flyback.
What output power range and input voltage conditions is PUCC28780D typically designed to handle in adapter applications?
PUCC28780D is designed for AC-DC adapter applications with universal input from 85 VAC to 265 VAC (120 VDC to 375 VDC rectified), supporting output power levels typically from 18 W to 65 W, making it suitable for USB-PD chargers and laptop power supplies.
Which protection mechanisms are built into PUCC28780D to safeguard the power supply under fault conditions?
PUCC28780D includes integrated over-current protection (OCP), over-voltage protection (OVP), and thermal shutdown, reducing the external component count required to meet IEC 62368-1 safety standards for consumer adapters. These features activate within microseconds to clamp fault energy.
How does PUCC28780D fit into a USB Power Delivery 3.0 charger design requiring programmable voltage output?
PUCC28780D supports communication with a secondary-side controller via a feedback loop that allows output voltage to be adjusted from 5 V to 20 V in a PD 3.0 charger. The ACF stage delivers the low-loss switching needed to sustain 20 V at 3 A (60 W) within a compact 30 x 50 mm adapter board.
Related Guides
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
ADAQ7768-1 Design Guide for Precision Vibration and Dynamic Signal Measurement
Design ADAQ7768-1 precision data acquisition channels for vibration and dynamic sensing with the right bandwidth, reference, clock, and layout choices.
Jun 30, 2026
AD5204BRZ10 Design Guide for SPI-Controlled Gain and Offset Calibration
Design AD5204BRZ10 digital potentiometer calibration loops with bounded trim span, safe wiper current, clean SPI routing, and reliable startup codes.
Jun 30, 2026
Why Buy from FindMyChip
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.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“FindMyChip sourced our entire STM32 BOM in 48 hours when our usual distributor had 16-week lead times.”