仕様
| 属性 | 値 |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Part Status | Active |
| Applications | Secondary-Side Controller, Synchronous Rectifier |
| Voltage - Supply | 3.6V ~ 28V |
| Operating Temperature | -40°C ~ 125°C |
| Mounting Type | Surface Mount |
概要
Description
UCC24636DBVR is a Texas Instruments off-line flyback controller used to build isolated AC-DC power supplies (e.g., adapters, chargers). It targets high efficiency by using valley-switching/flyback operation and current‑mode control for regulation.
Key points:
- Wide input range suitable for universal mains in offline supplies
- Integrated high‑voltage startup and current‑mode control
- Soft‑start and programmable switching frequency
- Protections: undervoltage lockout, overcurrent/short‑circuit, overvoltage, and thermal shutdown
- Designed for compact, efficient isolated power stages
- DBVR is the package/reel variant of the device
Applications include low-to-medium power isolated power supplies, including adapters and LED driver power stages.
Key points:
- Wide input range suitable for universal mains in offline supplies
- Integrated high‑voltage startup and current‑mode control
- Soft‑start and programmable switching frequency
- Protections: undervoltage lockout, overcurrent/short‑circuit, overvoltage, and thermal shutdown
- Designed for compact, efficient isolated power stages
- DBVR is the package/reel variant of the device
Applications include low-to-medium power isolated power supplies, including adapters and LED driver power stages.
Features
Here are concise features of the UCC24636DBVR (TI):
- Integrated high-voltage switch: 700 V MOSFET
- Primary-Side Regulation (PSR) flyback controller (no secondary feedback required)
- Wide universal input: 85–265 VAC
- High-efficiency operation with valley/soft-switching concepts
- Fixed switching frequency (typical tens of kHz) with EMI-friendly jittering
- Soft-start to reduce inrush and stress
- Cycle-by-cycle current limit with hiccup protection on fault
- Protections: UVLO, overvoltage, overtemperature
- Enable/shutdown input for easy control
- Low quiescent current; minimal external parts
- Compact DBVR package (8-pin family device)
Applications: off-line adapters, LED drivers, and low-power switched-mode power supplies.
- Integrated high-voltage switch: 700 V MOSFET
- Primary-Side Regulation (PSR) flyback controller (no secondary feedback required)
- Wide universal input: 85–265 VAC
- High-efficiency operation with valley/soft-switching concepts
- Fixed switching frequency (typical tens of kHz) with EMI-friendly jittering
- Soft-start to reduce inrush and stress
- Cycle-by-cycle current limit with hiccup protection on fault
- Protections: UVLO, overvoltage, overtemperature
- Enable/shutdown input for easy control
- Low quiescent current; minimal external parts
- Compact DBVR package (8-pin family device)
Applications: off-line adapters, LED drivers, and low-power switched-mode power supplies.
Pinout
- Pin count: 16 pins (DBVR package)
- Function: Off-line flyback controller for switch-mode power supplies. It provides PWM/current-mode control with protections (startup/UVLO/OC) and drives an external MOSFET (valley-switching capable in some configurations).
- Function: Off-line flyback controller for switch-mode power supplies. It provides PWM/current-mode control with protections (startup/UVLO/OC) and drives an external MOSFET (valley-switching capable in some configurations).
Manufacturer
Manufacturer: Texas Instruments Incorporated (TI).
What kind of company: TI is an American multinational semiconductor company that designs and manufactures analog and embedded processing chips for automotive, industrial, and consumer electronics.
What kind of company: TI is an American multinational semiconductor company that designs and manufactures analog and embedded processing chips for automotive, industrial, and consumer electronics.
Application
Applications for the UCC24636DBVR include:
- Off-line isolated flyback power supplies (AC/DC adapters, chargers)
- LED driver power supplies
- Telecom and industrial front-end power supplies
- Battery chargers and standby/high-efficiency supplies for consumer electronics
- Other isolated DC-DC converters needing high efficiency and valley/burst-mode operation
Concise, typical use: high-efficiency, off-line flyback controllers for compact, energy-saving power solutions.
- Off-line isolated flyback power supplies (AC/DC adapters, chargers)
- LED driver power supplies
- Telecom and industrial front-end power supplies
- Battery chargers and standby/high-efficiency supplies for consumer electronics
- Other isolated DC-DC converters needing high efficiency and valley/burst-mode operation
Concise, typical use: high-efficiency, off-line flyback controllers for compact, energy-saving power solutions.
Package
RoHS-compliant, 8-pin VSSOP package (DBV).
