Test Data For PMP7899 4/17/2015 - TIJ.co.jp12Vin, 1A load bode plot, 51.6 degrees phase margin, and 29.33dB gain margin. 18Vin, 1A load bode plot, 46.6 degrees phase margin, and 59dB

Test Report PMP7899

1 April 17, 2015

Test Data

For PMP7899

4/17/2015

Test Report PMP7899

2 April 17, 2015

Table of Contents 1. Design Specifications ............................................................................................................................ 3

2. Circuit Description ................................................................................................................................. 3

3. PMP7899 Board Photos ........................................................................................................................ 3

4. Efficiency ............................................................................................................................................... 4

4.1 Efficiency Chart ................................................................................................................................... 4

4.2 Efficiency Data............................................................................................................................... 5

5 Thermal Images .......................................................................................................................................... 6

6 Waveform .................................................................................................................................................. 8

6.1 Switching Waveform ........................................................................................................................... 8

6.2 Output Ripple ...................................................................................................................................... 9

6.3 Load Transient ................................................................................................................................... 11

6.4 Start Up ............................................................................................................................................. 12

6.5 Short Circuit ...................................................................................................................................... 14

6.7 Bode Plot ........................................................................................................................................... 15

Test Report PMP7899

3 April 17, 2015

1. Design Specifications Vin Minimum 8VDC

Vin Maximum 18VDC

Vout +48VDC @ 1A

Nominal Switching Frequency ≈ 340KHz

2. Circuit Description PMP7899 is an isolated flyback converter utilizing the LM5022 for industrial applications. This design

has a minimum operating input voltage of 8V and a maximum input voltage of 18V. The test report

here is for 8V, 12V and 18Vin/~48V out @ 1A of load current. Switching frequency is set to

340kHz. A custom flyback transformer from Coilcraft is used in this design.

3. PMP7899 Board Photos Board Dimensions: 101.6mm x 35.56mm

Board Photo (Top)

Test Report PMP7899

4 April 17, 2015

Board Photo (Bottom)

4. Efficiency

4.1 Efficiency Chart

60.00

65.00

70.00

75.00

80.00

85.00

90.00

0.00 0.20 0.40 0.60 0.80 1.00

Effi

cie

ncy

(%

)

Iout(A)

PPMP7899 Efficiency

8Vin

12Vin

18Vin

Test Report PMP7899

5 April 17, 2015

4.2 Efficiency Data

Vin(V) Iin(A) Pin (W) Vout(V) Iout(A) Pout(W) Losses(W) Efficiency(%)

8.00 0.09 0.74 48.18 0.00 0.00 0.74 0.00

8.00 0.31 2.48 48.17 0.03 1.59 0.89 64.09

8.00 0.88 7.07 48.17 0.13 6.02 1.04 85.22

8.00 1.54 12.28 48.17 0.22 10.50 1.78 85.49

8.00 2.19 17.52 48.17 0.32 15.22 2.30 86.85

8.00 2.84 22.72 48.16 0.41 19.84 2.88 87.34

8.00 3.49 27.89 48.16 0.51 24.42 3.47 87.55

8.00 4.19 33.50 48.15 0.61 29.18 4.32 87.11

8.00 4.88 39.03 48.15 0.70 33.89 5.13 86.84

8.00 5.59 44.76 48.14 0.80 38.61 6.15 86.26

8.00 6.33 50.67 48.13 0.90 43.42 7.25 85.68

8.00 7.12 56.95 48.12 1.01 48.41 8.54 85.01


12.00 0.06 0.72 48.12 0.00 0.00 0.72 0.00

12.00 0.19 2.24 48.13 0.03 1.44 0.80 64.34

12.00 0.59 7.02 48.13 0.12 5.78 1.24 82.28

12.00 1.05 12.60 48.13 0.23 10.88 1.72 86.34

12.00 1.50 17.94 48.13 0.32 15.60 2.34 86.94

12.00 1.93 23.19 48.13 0.42 20.31 2.88 87.58

12.00 2.37 28.45 48.13 0.52 24.98 3.47 87.81

12.00 2.82 33.78 48.12 0.62 29.69 4.09 87.89

12.00 3.27 39.18 48.12 0.71 34.36 4.82 87.69

12.00 3.72 44.62 48.12 0.81 39.07 5.55 87.55

12.00 4.18 50.13 48.11 0.91 43.88 6.25 87.52

12.00 4.66 55.95 48.11 1.01 48.68 7.27 87.01


18.01 0.05 0.83 48.11 0.00 0.00 0.83 0.00

18.01 0.08 1.40 48.11 0.01 0.43 0.97 30.83

18.01 0.37 6.72 48.12 0.11 5.34 1.38 79.51

18.01 0.60 10.71 48.12 0.19 8.90 1.81 83.08

18.01 0.91 16.44 48.12 0.30 14.34 2.10 87.22

18.01 1.20 21.64 48.12 0.39 18.77 2.88 86.71

18.01 1.48 26.68 48.12 0.48 23.24 3.44 87.09

18.00 1.77 31.85 48.11 0.58 27.81 4.04 87.31

18.00 2.06 37.03 48.11 0.68 32.47 4.56 87.69

Test Report PMP7899

6 April 17, 2015

18.00 2.34 42.19 48.11 0.77 36.99 5.20 87.67

18.00 2.64 47.54 48.10 0.87 41.70 5.83 87.73

18.00 2.94 52.95 48.10 0.96 46.37 6.58 87.57

5 Thermal Images

Thermal image was taken at 12Vin, 1A load when the board reaches equilibrium.

Test Report PMP7899

7 April 17, 2015

Thermal image was taken at 18Vin, 1A load when the board reaches equilibrium.

Thermal image was taken at 8Vin, 0.9A load when the board reaches equilibrium. Heat sink or air flow

is required if intended to run continuous at 8Vin/0.9A full load.

Test Report PMP7899

8 April 17, 2015

6 Waveform

6.1 Switching Waveform

8Vin, 1A load. Ch1 measures primary switching waveform, Ch2 measures secondary switching

waveform.


waveform.

Test Report PMP7899

9 April 17, 2015


waveform.

6.2 Output Ripple

8Vin, 1A load. Ch1 measures output ripple.

Test Report PMP7899

10 April 17, 2015



Test Report PMP7899

11 April 17, 2015

6.3 Load Transient

8Vin, 0.5A-1A load step. Ch1 measures output voltage, Ch4 measures output load current.


Test Report PMP7899

12 April 17, 2015


6.4 Start Up

8Vin, 1A load. Ch1 measures input voltage, Ch2 measures output voltage.

Test Report PMP7899

13 April 17, 2015



Test Report PMP7899

14 April 17, 2015

6.5 Short Circuit

8Vin, 0A load. Ch2 measures output voltage, Ch4 measures output current.


Test Report PMP7899

15 April 17, 2015


6.7 Bode Plot

8Vin, 1A load bode plot, 60.6 degrees phase margin, and 28.6dB gain margin.

Test Report PMP7899

16 April 17, 2015

12Vin, 1A load bode plot, 51.6 degrees phase margin, and 29.33dB gain margin.

18Vin, 1A load bode plot, 46.6 degrees phase margin, and 59dB gain margin.

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Documents

Test Data For PMP7899 4/17/2015 - TIJ.co.jp12Vin, 1A load bode plot, 51.6 degrees phase margin, and 29.33dB gain margin. 18Vin, 1A load bode plot, 46.6 degrees phase margin, and 59dB