48V 400A Embedded Telecom Power System

1.Input characteristics

ON.

Project

Technical requirement

Remarks

1.1

Module input

120 ~ 425Vdc (starting voltage over 160Vdc)

1.2

Rated input voltage

340Vdc

1.3

MPPT voltage range

120Vdc to 340Vdc

1.4

Maximum input current

17A

1.5

Anti-polar protection

Wrong input polarity, no damage

1.6

Input insurance

Positive and negative insurance

1.7

Maximum input voltage

450Vdc

The power supply cannot be damaged

2. Output characteristics

ON.

Project

Technical requirement

Remarks

2.1

Output voltage range

-42Vdc ~ -58Vdc (typical value-54.5Vdc)

2.2

Module output rated current

55A

@-48VDC

2.3

Module output peak current

62.5A

2.4

Voltage stabilization accuracy

≤±1%

2.5

Output ripple & noise

≤200mVp-p

Rated input voltage and load and bandwidth limit of 20 MHz

2.6

Efficiency

≥95%

@340/40%～70% Load -54.5Vdc

2.7

Startup time

3～10S

The rated input voltage starts to the output voltage establishes to the setting value, the starting output needs to use the pre-flow limit function

2.8

On/off overshoot amplitude

≤±5%

When either module is hot plugged (the load current should not be greater than the total output current in the working module), the system output voltage fluctuates

2.9

Dynamic response

Overshoot

range

≤±5%

25%~50%~25% or 50%~75%~50% load variation

Recovery time

≤200µS

2.10

Temperature coefficient

≤±0.02%/℃

2.11

Psophometrically weighted noise voltage

≤2mV

2.12

Wide-band noise voltage

3.4～150KHz

≤50mV

0.15～30M Hz

≤20

2.11

Discrete noise voltage

3.4～150KHz

≤5mV

150～200KHz

≤3mV

200～500KHz

≤2mV

0.5～30M Hz

≤1mV

2.12

Voltage drop

≤500mV

3. Protection characteristics

ON.

Project

Technical requirement

                                                                              Remarks

3.1

Photovoltaic input overvoltage protection

430Vdc

Can self-recovery, the difference of not less than 15 Vac

3.2

Photovoltaic input undervoltage protection

110Vdc

Can self-recovery, the difference of not less than 40 Vac

3.3

Photovoltaic output overvoltage protection

Internal-58.5Vdc to-60.5Vdc, external: 63Vdc

Lock, can not recover, need to restart

3.4

Output undervoltage protection

Battery disconnect protection

Through monitoring, the battery can be powered down, and the protection point can be set

3.5

Output limit protection

Have

3.6

Output short circuit protection

Have

Long-term short circuit, can recover from itself

3.7

Overtemperature protection

It can recover automatically at the ambient temperature of 75℃

3.8

Battery polarity is connected to reverse protection

Not have

According to the user needs can have the battery polarity reverse connection protection function

3.9

PV underpower protection

 Input power <50W and shutdown for 5 minutes

The module starts when the input voltage is greater than 160 Vdc for 5 minutes.