UCC28C41QDRQ1

The UCC28C4x-Q1 series of devices are high-performance current-mode PWM controllers. The UCC28C4x-Q1 series supports the implementation of fixed-frequency, peak current-mode flyback functions, with UVLO and maximum duty cycle limit functions. In terms of configuration, it can use the auxiliary winding for primary-side regulation or an optocoupler for secondary-side regulation. This series of devices can achieve high-frequency operation up to 1 MHz, with low start-up and operating currents, thus minimizing start-up losses and operating power consumption and improving efficiency. They also feature fast current sensing (output delay time up to 35 ns) and ±1 A peak output current capability, which can directly drive large external MOSFETs. The UCC28C4x-Q1 series of devices are available in an 8-pin SOIC (D) package.

Applications

• Isolated bias supply for OBC and DC/DC converters
• High-voltage to low-voltage backup supply for traction inverters
• High-voltage isolated supply for HVAC compressors
• Isolated supply for AC and DC EV charging equipment

Key features

• AEC-Q100 qualified with the following characteristics:
• Device temperature grade 1: -40°C to +125°C
• Device HBM classification level 2: ±2kV
• Device CDM classification level C4B: 750V
• Functional Safety enabled
• Documentation available to aid functional safety system design
• Operating frequency: 1MHz maximum
• 50μA standby current, 100μA maximum
• Operating current as low as 2.3mA at 52kHz
• 35ns fast cycle-by-cycle overcurrent limiting
• ±1A peak output current
• Rail-to-rail output swing with 25ns rise time and 20ns fall time
• Initial trimmed 2.5V error amplifier reference at ±1%
• Trimmed oscillator discharge current
• Undervoltage lockout new version
• Create custom designs with UCC28C4x-Q1 using WEBENCH Power Designer