UCC28C50
UCC28C50 is Low-Power Current-Mode High-Performance PWM Controller manufactured by Texas Instruments.
UCC28C50, UCC28C51, UCC28C52, UCC28C53, UCC28C54, UCC28C55, UCC28C56H, UCC28C56L, UCC28C57H, UCC28C57L, UCC28C58, UCC28C59, UCC38C50, UCC38C51, UCC38C52, UCC38C53,
UCC38C54, UCC38C55
SLUSER8C
- JUNE 2022
- REVISED MARCH 2023
UCCx8C5x Low-Power Current-Mode High-Performance PWM Controller for Si and Si C MOSFETs
1 Features
- Undervoltage lockout options to support both Si and Si C MOSFET applications
- 30-V VDD absolute maximum voltage
- 1-MHz maximum fixed frequency operation
- 50-μA startup current, 75-μA maximum
- Low operating current: 1.3 m A (at f OSC = 52 k Hz)
- Fast 35-ns, cycle-by-cycle overcurrent limiting
- ±1-A peak driving current
- Rail-to-rail output
- 25-ns rise time
- 20-ns fall time
- ±1% accurate 2.5-V error amplifier reference
- Pin-to-pin patible and drop-in replacement for UCCx8C4x
- Functional Safety-Capable
- Documentation available to aid functional safety system design
2 Applications
- General purpose single-ended DC-DC or off-line isolated power converters
- Auxiliary power supply for solar power inverters, motor drives, energy storage systems
- Isolated power supply for EV charging stations
3 Description
The UCCx8C5x family of devices are highperformance current-mode PWM controllers that can drive both Si and Si C MOSFETs in various applications. The UCCx8C5x family is a more efficient and robust version of the UCCx8C4x.
The UCCx8C5x family has new UVLO thresholds that allow for reliable Si C MOSFET operation (UCC28C56-59), in addition to existing UVLO thresholds for continued Si MOSFET support (UCCx8C50-55).
VDD absolute maximum voltage rating is extended from 20 V to 30 V for optimally driving the gate of 20-Vgs, 18-Vgs, or 15-Vgs Si C MOSFETs, while also allowing for the exclusion of an external LDO.
Device Performance...
