QSH-24/W24 Parallel Current-Sharing Power Modules (1/2 brick)
The QSH-24 / W24 / Current / Sharing power module family is described by the configuration-specific ratings in the following tables. DC/DC isolated conversion. Maximum output power: 800W. Input undervoltage protection. Refer to the selection table, pin assignments and application guidance for the selected configuration.
Input voltage (V)
Output voltage (V)
Output current (A)
Efficiency (%) half load / full load
Ratings apply to the selected configuration. See the datasheet for test conditions and model designation notes.
Source markers *, a and b are footnotes, not part of the part number. See Technical Data for the corresponding notes.
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QSH-24/W24 Parallel Current-Sharing Power Modules (1/2 brick)
The QSH-24 / W24 / Current / Sharing power module family is described by the configuration-specific ratings in the following tables. DC/DC isolated conversion. Maximum output power: 800W. Input undervoltage protection. Refer to the selection table, pin assignments and application guidance for the selected configuration.
- DC/DC isolated conversion
- Maximum output power: 800W
- Input undervoltage protection
- Output overvoltage, overcurrent, short circuit, Overtemperature protection
- QSH-24 series and QSH*B-W24 series integrates reverse-current blocking
- QSH*S-W24 series does not provide internal reverse-current blocking, parallel connection allows
- 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 |
|---|---|---|---|---|---|---|
| QSH400-24S05NNMa | 18 to 36 | 5 | 80.0 | 92/91 | 10000 | 100 |
| QSH600-24S12NNMa | 18 to 36 | 12 | 50.0 | 92/91 | 8000 | 100 |
| QSH600-24S24NNMa | 18 to 36 | 24 | 25 | 92/91 | 5000 | 150 |
| QSH600-24S28NNMa | 18 to 36 | 28 | 21.5 | 92/91 | 5000 | 150 |
| QSH400S-W24S05NNMb | 9 to 40 | 5 | 80.0 | 92/91 | 30000 | 50 |
| QSH800S-W24S12NNMb | 9 to 40 | 12 | 66.6 | 95/94 | 20000 | 50 |
| QSH800S-W24S28NNMb | 9 to 40 | 28 | 28.5 | 95/94.5 | 7500 | 120 |
| QSH800S-W24S48NNMb | 9 to 40 | 48 | 16.7 | 94.5/93.5 | 4000 | 150 |
| QSH800B-W24S28NNMa | 9 to 40 | 28 | 28.5 | 95/94 | 7500 | 200 |
Technical Data — QSH-24 / W24 / Current / Sharing
| Characteristic | Test temperature | Min. | Typ. | Max. | Unit | Conditions |
|---|---|---|---|---|---|---|
| Input voltage range | Room, High, Low | 18 | 28 | 36 | V | 24 series, full load range |
| Input voltage range | Room, High, Low | 9 | 28 | 40 | V | W24 series, full load range |
| Input surge voltage | Room | — | — | 50 | V | Vt=100ms, full load |
| No-load power consumption a | Room | — | 12 | — | W | nominal input voltage, no output load |
| Output voltage adjustment range | Room, High, Low | 80 | — | 110 | %VO | Io≤ maximum value and Po≤Vo×Iomax; QSH-24 series 5V output module, Input voltage ≥22V trim-up is available when |
| Line regulation | Room, High, Low | -1 | — | +1 | %VO | full input-voltage range, full load |
| Load regulation | Room, High, Low | -1 | — | +1 | %VO | full load range |
| Output current-sharing accuracy | Room, High, Low | — | — | 10 | % | tested at the following percentage of the rated current of two modules 50%, 75%, 100% Current-sharing accuracy under load, supports up to 6 number of modules operated in parallel, Vin<16Vdc start-up load power in parallel operation must not exceed the derated power of one module. QSH*S-W24 series, QSH*B-W24 series |
| Output current-sharing accuracy | Room, High, Low | — | — | 10 | % | tested at the following percentage of the rated current of two modules 50%, 75%, 100% Current-sharing accuracy under load, supports up to 6 number of modules operated in parallel. QSH-24 series |
| Turn-on delay a | Room | — | 50 | — | ms | time from power-on until output voltage reaches 10% time |
| Output voltage rise time a | Room | — | 22 | — | ms | output voltage from 10% rises to 90% time |
| ENA Turn-on delay a | Room | — | 35 | — | ms | ENA time from power-on until output voltage reaches 10% time |
| Enable logic level (negative logic) | Room | 0 | — | 0.7 | V | output enabled, see the application guide for control methods |
| Enable logic level (negative logic) | Room | 3.5 | — | 12 | V | no output when open or high, see the application guide for control methods |
| Input undervoltage protection | Room | 10 | — | 17 | V | QSH-24 series, no load |
| Input undervoltage protection | Room | 7.5 | — | 8.8 | V | QSH*S-W24 series, QSH*B-W24 series, no load |
| Output overcurrent protection | Room | 105 | — | — | %Io | hiccup mode, automatic recovery after overcurrent removal |
| Output short-circuit protection | Room | — | hiccup mode, automatic recovery after removal of the short circuit | |||
| Output overvoltage protection | Room | 115 | — | 150 | %VO | hiccup mode, automatic recovery |
| Isolation withstand voltage | Room | - | no breakdown, no flashover; input to output, 1500Vdc/60s/<3.5mA | |||
| Insulation resistance | Room | 100 | — | — | MΩ | 500Vdc, input, output, between each pair of terminals and case |
| Switching frequency | Room | — | 300 | — | kHz | |
| Weight | / | — | 160 | — | g | N case type |
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; 4, "a"QSH-24 series and QSH*B-W24 series integrates an ideal diode for reverse-current blocking; 5, "b"QSH*S-W24 series does not provide reverse-current blocking, for a single module, the interval between repeated power cycles must exceed 3s, parallel operation requires external ideal diodes.
a: typical model QSH600-24S12NNM time, 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.
Mechanical Dimensions (pins facing upward) QSH-24 series QSH*S-W24 series, QSH*B-W24 series
1 VIN+ Positive input terminal 6 SNS- Negative remote-sense terminal
3 SHARE Current-sharing terminal 8 SNS+ Positive remote-sense terminal
Outline & Mechanical Dimensions
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