Power modules – QSF4000D-270
The QSF4000D-270 power module family is described by the configuration-specific ratings in the following tables. DC/DC isolated conversion. Maximum output power: 4000W. Input undervoltage protection. Refer to the selection table, pin assignments and application guidance for the selected configuration.
Ratings apply to the selected configuration. See the datasheet for test conditions and model designation notes.
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Power modules - QSF4000D-270
The QSF4000D-270 power module family is described by the configuration-specific ratings in the following tables. DC/DC isolated conversion. Maximum output power: 4000W. Input undervoltage protection. Refer to the selection table, pin assignments and application guidance for the selected configuration.
- DC/DC isolated conversion
- Maximum output power: 4000W
- Input undervoltage protection
- Output overvoltage, overcurrent, short circuit, Overtemperature protection
- Operating temperature (Tc): -55°C to 105°C
- Storage temperature: -55°C to 125°C
Product Selection
| Model | Input voltage (V) | Output voltage (V) | Output current (A) | Efficiency (%) half load / full load | Capacitive load (µF) max. | Ripple (mV) Typical |
|---|---|---|---|---|---|---|
| QSF4000D-540S36NNM | 350 to 700 | 36 | 111 | 95/95 | 10000 | 350 |
Technical Data — QSF4000D-270
| Characteristic | Test temperature | Min. | Typ. | Max. | Unit | Conditions |
|---|---|---|---|---|---|---|
| Input voltage range | Room, High, Low | 350 | 540 | 700 | V | full load range, input 350V to 400V output voltage is 32.5V to 36V |
| No-load power consumption | Room | — | 35 | — | W | no output load |
| Output voltage adjustment range | Room | 80 | — | 110 | %VO | full input-voltage range, IO≤ maximum value and PO≤VO×IOmax |
| Line regulation | Room | -1 | — | +1 | %VO | Input voltage 400V to 700V, full load |
| Load regulation | Room, High, Low | -2 | — | +2 | %VO | rated input voltage, full load range |
| Turn-on delay | Room | — | 150 | — | ms | time from power-on until output voltage reaches 10% time |
| Output voltage rise time | Room | — | 110 | — | ms | output voltage from 10% rises to 90% time |
| Enable turn-on delay | Room | — | 140 | — | ms | time from enable assertion until output voltage reaches 10% time |
| Enable logic level (negative logic) | Room | 0 | — | 0.7 | V | output enabled when grounded or low, see the application guide for control methods |
| Enable logic level (negative logic) | Room | 3.5 | — | 12.0 | V | no output when high or open, see the application guide for control methods |
| Input undervoltage protection | Room | 330 | — | 345 | V | half load |
| Output overcurrent protection | Room | 115 | — | — | A | constant-current limiting followed by hiccup mode, automatic recovery |
| Output short-circuit protection | Room | — | — | — | — | hiccup mode, automatic recovery |
| Switching frequency | Room | — | 120 | — | kHz | |
| Isolation withstand voltage | Room | - | — | no breakdown, no flashover; input to output, 3000Vdc/60s/<3.5mA | ||
| Insulation resistance | Room | 100 | — | — | MΩ | 500Vdc, input, output, between each pair of terminals and case |
| Weight | / | — | 390 | — | g |
Note: 1, for other package types or temperature-screening grades, use the corresponding model designation rules when ordering, contact technical support for details; 2, electrical data and mechanical dimensions in this manual are for product selection reference, the detailed product specification governs the final requirements; 3, see the typical application circuit for the ripple measurement method.
a: typical model QSF2000D-540S28NNM parameter values, values may differ for other models, contact technical support for details.
Module dimensions are shown below, for dimensions without an explicit tolerance, for dimensions specified in X.X format, the dimensional tolerance is ±0.5mm; dimensions specified in X.XX format, the dimensional tolerance is ±0.25mm.
Outline & Mechanical Dimensions
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