Texas Instruments‘ UCC28C40-Q1 is a high-performance current-mode PWM controller. Supports implementation of fixed frequency, peak current mode flyback with UVLO and maximum duty cycle limiting. Configuration-wise, it can use an auxiliary winding for primary-side adjustment, or an optocoupler for secondary-side adjustment. This family of devices enables high frequency operation up to 1MHz with low start-up and operating currents, thereby minimizing start-up losses and operating power consumption, improving efficiency. They also feature fast current sensing (up to 35ns output delay time) and ±1A peak output current capability to directly drive external bulk MOSFETs.

The UCC28C40-Q1 is available in an 8-pin SOIC(D) package.

Features of Texas Instruments‘ UCC28C40-Q1:

1, with AEC-Q100 standard:

Device Temperature Grade 1: -40⁰C to 125⁰C

Device HBM Classification Level 2: ±2kV

Device CDM classification level C4B: 750V

2. 1MHz operation

3. 50µA standby current, maximum 100µA

4. Operating current as low as 2.3mA at 52kHz

5. 35ns fast cycle-by-cycle overcurrent limit

6. ±1A peak output current

7. Rail-to-rail output swing, rise and fall times of 25ns and 20ns, respectively

8. The initial trimmed 2.5V error amplifier reference is ±1%

9. Trimmed oscillator discharge current

10. New version of undervoltage lockout

11. Use the UCC28C4x-Q1 to create custom designs with WEBENCH® Power Designer

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