UCC28C43QDRQ1

The UCC28C4x-Q1 family devices are high performance current-mode PWM controllers.

The UCC28C4x-Q1 family supports a fixed-frequency, peak current-mode flyback implementation with UVLO and maximum duty-cycle limit options. UCC28C4X-Q1 can be configured with either primary-side regulation using an auxiliary winding or secondary-side regulation with the use of an opto-coupler. This family of devices features high frequency operation up to 1 MHz with low start up and operating currents, thus minimizing start up loss and operating power consumption for improved efficiency. The devices also feature a fast current sense to output delay time of 35 ns, and a ±1-A peak output current capability for driving large external MOSFETs directly.

The UCC28C4x-Q1 family is offered in the 8-pin SOIC (D) package.

Key Features

• AEC-Q100 qualified with the following results:
  • Device temperature grade 1: -40⁰C to 125⁰C
  • Device HBM classification level 2: ±2 kV
  • Device CDM classification level C4B: 750 V
• Functional Safety-Capable
  • Documentation available to aid functional safety system design
• Operating frequency: 1 MHz Maximum
• 50-µA standby current, 100-µA maximum
• Low operating current of 2.3 mA at 52 kHz
• Fast 35-ns cycle-by-cycle over-current limiting
• ±1-A peak output current
• Rail-to-rail output swings with 25-ns rise and 20-ns fall times
• ±1% initial trimmed 2.5-V error amplifier reference
• Trimmed oscillator discharge current
• New undervoltage lockout versions
• Create a custom design using the UCC28C4x-Q1 with the WEBENCH Power Designer