TIDT240 October   2021

 

  1. 1Description
  2. 2Test Prerequisites
    1. 2.1 Voltage and Current Requirements
    2. 2.2 Required Equipment
    3. 2.3 Considerations
    4. 2.4 Dimensions
    5. 2.5 Signal Descriptions
  3. 3Testing and Results
    1. 3.1 Efficiency Graphs
    2. 3.2 Efficiency Data
    3. 3.3 Voltage Regulation Graphs
    4. 3.4 Cross-Loading Performance
    5. 3.5 Cross-Loading Performance Data
  4. 4Waveforms
    1. 4.1 Switching
    2. 4.2 Output Voltage Ripple
    3. 4.3 Load Transients
    4. 4.4 Start-up Sequence

2.1 Voltage and Current Requirements

Table 2-1 Voltage and Current Requirements
Parameter Specifications
Input voltage range 12 V to 15 V (fully tested)
6 V to 36 V (operational)
Output voltage and current Two isolated outputs, each +15 V, 120 mA
Switching frequency 2.1 MHz (buck),
450 kHz (push-pull)
Topology Buck pre-regulator + open-loop push-pull
Transformer dielectric strength
(WE 750316853)		 3125 VAC at 2 seconds,
2500 VAC at 1 minute
Secondary-to-primary capacitance(1) 11.5 pF at 100 kHz
Secondary-to-secondary capacitance(1) Approximately 7.5 pF at 100 kHz
(1) Terminals VOUT1, VOUT2, VOUT-BCK are shorted with a jumper for the measurement. The value is taken with an accurate RCL meter. Naturally, the system is disabled.