TIDT323 june   2023

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5. 1System Specification
    1. 1.1 Input Characteristic
    2. 1.2 Output Characteristics
  6. 2Results
    1. 2.1  Efficiency Graph, Voltage Mode
    2. 2.2  Efficiency Data, Voltage Mode
    3. 2.3  Efficiency Graph, Current Mode
    4. 2.4  Efficiency Data, Current Mode
    5. 2.5  Load Regulation, Voltage Mode
    6. 2.6  Load Regulation, Current Mode
    7. 2.7  Line Regulation, Voltage Mode
    8. 2.8  Line Regulation, Current Mode
    9. 2.9  Thermal Images, Voltage Mode
    10. 2.10 Thermal Image, Current Mode
  7. 3Waveforms
    1. 3.1  Prebias Start-Up, Voltage Mode
    2. 3.2  Prebias Start-up, Current Mode
    3. 3.3  Output Voltage Ripple, Voltage Mode
    4. 3.4  Output Voltage Ripple, Current Mode
    5. 3.5  Load Transient, Voltage Mode
    6. 3.6  Load Transient, Current Mode
    7. 3.7  Line Transient, Voltage Mode
    8. 3.8  Line Transient, Current Mode
    9. 3.9  Phase Current Balancing, Voltage Mode
    10. 3.10 Phase Current Balancing, Current Mode
    11. 3.11 Loop Response, Voltage Mode
    12. 3.12 Loop Response, Current Mode

1.2 Output Characteristics

Table 1-2 lists the output characteristics data.

Table 1-2 Output Characteristics
Parameter Symbols Conditions MIN TYPE MAX Unit
Output Voltage Setpoint VOUT 19 A on output 28 48 52 V
Line Regulation Regline VOUT = 48 V; IO = IOmax;
36 ≤ VIN ≤ 62		 0.5 %
Load Regulation Regload VOUT = 48 V; VIN = 48 V;
0 ≤ IO ≤ IOmax		 0.5 %
Ripple and Noise Vn VOUT = 48 V; VIN = 48 V;
0 ≤ IO ≤ IOmax, Voltage mode		 21 mVpp
VOUT = 48 V; VIN = 48 V;
0 ≤ IO ≤ IOmax, Current mode		 54
Output Current IO VOUT = 48 V; VIN = 48 V;
0 ≤ IO ≤ IOmax, Voltage mode		 0 21 A
VOUT = 48 V; VIN = 48 V;
0 ≤ IO ≤ IOmax, Current mode		 0 14 A
Efficiency η VOUT = 48 V; VIN = 48 V;
IO = 21 A, Voltage mode		 97.13 %
VOUT = 48 V; VIN = 48 V;
IO = 14 A, Current mode		 91.12 %
Load Transient Overshoot and Undershoot Vtr VOUT = 48 V; VIN = 48 V;
IOUT = 0 A to 21 A to 0 A, 2.5 A/μs,
Voltage mode		 ±1.3 %
VOUT = 48 V; VIN = 48 V; IOUT = 0 A to 14 A to 0 A, 2.5 A/μs, Current mode ±0.65 %
Output Rise Time tstart 10% to 90% of VOUT 160 ms
Overshoot at Start-up At start-up 0.5 %
Switching Frequency fS Over VIN and IO ranges 200 kHz
Phase Current Sharing Accuracy Ishare 10% to full load –5 5 %
Loop Bandwidth BW 50% to full load,
Voltage mode		 7.2 kHz
50% to full load,
Current mode		 7.8 kHz
Loop Phase Margin φ 50% to full load,
Voltage mode		 45 °
50% to full load,
Current mode		 60 °
Loop Gain Margin G 50% to full load 10 dB
Output Overvoltage Vo_ov Restart when Fault is gone VO + 3 V
Output Over Current Io_oc Shutdown without delay, Voltage mode 24 A
Shutdown without delay, Voltage mode 17 A