SBAA705 August   2025 ISOTMP35-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2ISOTMP35-Q1 Key Information for Design
    1. 2.1 Simplified Design Schematic to Sense Temperature
    2. 2.2 Temperature Transfer Table
  6. 3PWM Controller UCC28C43-Q1 Key Information for Design
    1. 3.1 UCC28C43-Q1 Internal Block Diagram
    2. 3.2 UCC28C43-Q1 Voltage Mode Setting
    3. 3.3 UCC28C43-Q1 Heating Frequency Setting
  7. 4OPA333-Q1 Key Information
  8. 5Air Heater Circuitry Design Sample
    1. 5.1 Working Mechanism Explanation
    2. 5.2 Air Heater Schematic Design
      1. 5.2.1 Working Condition
      2. 5.2.2 Design Procedure
  9. 6Typical Heater Schematic
  10. 7References

3.1 UCC28C43-Q1 Internal Block Diagram

Figure 3-1 shows there are PWM, error amplifier, current sense units, if provides analog signal to FB, UCC28C43-Q1 can generate a square waveform on output, and duty cycle can change when FB analog signal change accordingly.

Internal Block Diagram Figure 3-1 Internal Block Diagram