Power supply frontend DPH5005-USB 50V/15A, charts

DSC_2615

This is all the charts without many comments, for the review see here.

Contents
    Load sweep
    Load Test
    Voltage sweep
    Voltage sweep, no load
    Voltage sweep, output shorted
    On/off charts
    Noise charts


Load sweep

The first voltage is input voltage, the second voltage is output voltage.

Load%20sweep%206V%20out%204V

Fan starts at 3.5A.

Load%20sweep%208V%20out%204V
Load%20sweep%2012V%20out%204V
Load%20sweep%2024V%20out%204V
Load%20sweep%2030V%20out%204V
Load%20sweep%2040V%20out%204V
Load%20sweep%2050V%20out%204V

Load%20sweep%206V%20out%209V

The fan is also temperature controlled, here it starts at 2.5V.

Load%20sweep%208V%20out%209V
Load%20sweep%2012V%20out%209V
Load%20sweep%2024V%20out%209V
Load%20sweep%2030V%20out%209V
Load%20sweep%2040V%20out%209V
Load%20sweep%2050V%20out%209V


Load%20sweep%206V%20out%2015V
Load%20sweep%208V%20out%2015V
Load%20sweep%2012V%20out%2015V
Load%20sweep%2024V%20out%2015V
Load%20sweep%2030V%20out%2015V
Load%20sweep%2040V%20out%2015V
Load%20sweep%2050V%20out%2015V


Load%20sweep%206V%20out%2025V
Load%20sweep%208V%20out%2025V
Load%20sweep%2012V%20out%2025V
Load%20sweep%2024V%20out%2025V
Load%20sweep%2030V%20out%2025V
Load%20sweep%2040V%20out%2025V
Load%20sweep%2050V%20out%2025V


Load%20sweep%206V%20out%2035V
Load%20sweep%208V%20out%2035V
Load%20sweep%2012V%20out%2035V
Load%20sweep%2024V%20out%2035V
Load%20sweep%2030V%20out%2035V
Load%20sweep%2040V%20out%2035V
Load%20sweep%2050V%20out%2035V



Load%20sweep%206V%20out%2050V
Load%20sweep%208V%20out%2050V
Load%20sweep%2012V%20out%2050V
Load%20sweep%2024V%20out%2050V
Load%20sweep%2030V%20out%2050V
Load%20sweep%2040V%20out%2050V
Load%20sweep%2050V%20out%2050V



Load Test

These test are done with fixed input voltage, fixed output voltage and constant current. The purpose is to see if the output stays stable when the power supply warms up and also to see if the supply can maintain the current.

Load%20test%205.0A%20out%2035V

The first load test is with the buck converting, input voltage is 50V.

Temp6034

M1: 51.9C, M2: 47.3C, HS1: 58.1C

Temp6035

M1: 52.3C, M2: 48.7C, HS1: 57.9C

Load%20test%205.0A%20out%2050V

Second test is with boost converting at full power, input voltage is 25V.

Temp6036

M1: 69.3C, HS1: 87.5C

Temp6037

M1: 64.7C, M2: 60.9C, HS1: 77.1C

Here the output is nearly 250W with a power loss of about 17W, this means a efficiency about 93%



Voltage sweep

These test are done with constant output voltage and output current. The input voltage is varied to see how the efficiency varies and how low input voltage it can handle.
Each test includes two charts: one with input current and one with output voltage and power loss/efficiency

Voltage%20sweep%200.1A%20out%204V%20input%20current
Voltage%20sweep%200.1A%20out%204V
Voltage%20sweep%200.1A%20out%209V%20input%20current
Voltage%20sweep%200.1A%20out%209V
Voltage%20sweep%200.1A%20out%2015V
Voltage%20sweep%200.1A%20out%2025V%20input%20current
Voltage%20sweep%200.1A%20out%2025V
Voltage%20sweep%200.1A%20out%2035V%20input%20current
Voltage%20sweep%200.1A%20out%2035V
Voltage%20sweep%200.1A%20out%2050V%20input%20current
Voltage%20sweep%200.1A%20out%2050V


Voltage%20sweep%200.3A%20out%204V%20input%20current
Voltage%20sweep%200.3A%20out%204V
Voltage%20sweep%200.3A%20out%209V%20input%20current
Voltage%20sweep%200.3A%20out%209V
Voltage%20sweep%200.3A%20out%2015V
Voltage%20sweep%200.3A%20out%2025V%20input%20current
Voltage%20sweep%200.3A%20out%2025V
Voltage%20sweep%200.3A%20out%2035V%20input%20current
Voltage%20sweep%200.3A%20out%2035V
Voltage%20sweep%200.3A%20out%2050V%20input%20current
Voltage%20sweep%200.3A%20out%2050V


Voltage%20sweep%201A%20out%204V%20input%20current
Voltage%20sweep%201A%20out%204V
Voltage%20sweep%201A%20out%209V%20input%20current
Voltage%20sweep%201A%20out%209V
Voltage%20sweep%201A%20out%2015V
Voltage%20sweep%201A%20out%2025V%20input%20current
Voltage%20sweep%201A%20out%2025V
Voltage%20sweep%201A%20out%2035V%20input%20current
Voltage%20sweep%201A%20out%2035V
Voltage%20sweep%201A%20out%2050V%20input%20current
Voltage%20sweep%201A%20out%2050V


Voltage%20sweep%203A%20out%204V%20input%20current
Voltage%20sweep%203A%20out%204V
Voltage%20sweep%203A%20out%209V%20input%20current
Voltage%20sweep%203A%20out%209V
Voltage%20sweep%203A%20out%2015V
Voltage%20sweep%203A%20out%2025V%20input%20current
Voltage%20sweep%203A%20out%2025V
Voltage%20sweep%203A%20out%2035V%20input%20current
Voltage%20sweep%203A%20out%2035V
Voltage%20sweep%203A%20out%2050V%20input%20current
Voltage%20sweep%203A%20out%2050V


Voltage%20sweep%205A%20out%204V%20input%20current
Voltage%20sweep%205A%20out%204V
Voltage%20sweep%205A%20out%209V%20input%20current
Voltage%20sweep%205A%20out%209V
Voltage%20sweep%205A%20out%2015V
Voltage%20sweep%205A%20out%2025V%20input%20current
Voltage%20sweep%205A%20out%2025V
Voltage%20sweep%205A%20out%2035V%20input%20current
Voltage%20sweep%205A%20out%2035V
Voltage%20sweep%205A%20out%2050V%20input%20current
Voltage%20sweep%205A%20out%2050V





Voltage sweep, no load

Same as above, just without any output current.

No%20load%20voltage%20sweep%20out%204V
No%20load%20voltage%20sweep%20out%2050V



Voltage sweep, output shorted

This power supply has a constant current mode, these charts show how it works at different input voltage. Output is nearly shorted.

Voltage%20sweep%20current%20out%200.1A
Voltage%20sweep%20current%20out%200.5A
Voltage%20sweep%20current%20out%201A
Voltage%20sweep%20current%20out%205.1A




On/off charts

How do the output behave during on/off transitions. I test 3 situations: Input power to supply on/off, using the on/off button on the supply, connecting/disconnecting the load. The load is a IT8512+.

PowerOn50V5V0A1

When power is connected a small transient occurs on the output.

PowerOn50V5V0A2

Later on the load turn on normally (If auto on is enabled).

PowerOn25V50V0A1

The transient varies very little with output voltage.

PowerOff50V50V0A

Output voltage drops very slowly when power is removed from the supply.

OutputOn25V50V0A

OutputOn25V50A5A

OutputOff25V50V5A

OutputOn50V35V0A

OutputOn50V35V5A

LoadOn25V50V5A

The ouptut voltage drops significantly and then recovers when turning full load on.

LoadOff25V50V5A

LoadOn50V35V5A

LoadOff50V35V5A




Noise charts

Noise is measured with a oscilloscope connected to the output, I use an electronic load for drawing current.

Noise25V50V0A
Noise25V50V5A

Noise25V5V0A
Noise25V5V1A
Noise25V5V5A

Noise50V35V0A
Noise50V35V5A

Spectrum50V35V5A