Power modules – QSQ150/350A-270
The QSQ150 / 350A-270 power module family is described by the configuration-specific ratings in the following tables. DC/DC isolated conversion. Maximum output power: 350W. Input undervoltage protection. Refer to the selection table, pin assignments and application guidance for the selected configuration.
Input voltage (V)
Output voltage (V)
Ratings apply to the selected configuration. See the datasheet for test conditions and model designation notes.
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Power modules - QSQ150/350A-270
The QSQ150 / 350A-270 power module family is described by the configuration-specific ratings in the following tables. DC/DC isolated conversion. Maximum output power: 350W. Input undervoltage protection. Refer to the selection table, pin assignments and application guidance for the selected configuration.
- DC/DC isolated conversion
- Maximum output power: 350W
- 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 | Package |
|---|---|---|---|---|---|---|---|
| QSQ150-270S05NNM | 200 to 400 | 5 | 30 | 90.5/90 | 4700 | 100 | A |
| QSQ150-270S12NNM | 200 to 400 | 12 | 12.5 | 91.5/91 | 1500 | 120 | A |
| QSQ150-270S28NNM | 200 to 400 | 28 | 5.4 | 89.5/89 | 1000 | 150 | A |
| QSQ250A-270S05NNM | 180 to 425 | 5 | 50 | 90.5/90 | 10000 | 100 | B |
| QSQ300A-270S12NNM | 180 to 425 | 12 | 25 | 92/92 | 10000 | 100 | B |
| QSQ350A-270S24NNM | 180 to 425 | 24 | 14.6 | 92.5 /93 | 10000 | 180 | B |
| QSQ350A-270S28NNM | 180 to 425 | 28 | 12.5 | 93.5/93.5 | 10000 | 180 | B |
| QSQ350A-270S48NNM | 180 to 425 | 48 | 7.3 | 94/94 | 8000 | 200 | B |
Technical Data — QSQ150 / 350A-270
| Characteristic | Test temperature | Min. | Typ. | Max. | Unit | Conditions |
|---|---|---|---|---|---|---|
| Input voltage range | Room, High, Low | 180 | 270 | 425 | V | QSQ350A series |
| Input voltage range | Room, High, Low | 200 | 270 | 400 | V | QSQ150 series |
| Input voltage transient | Room | — | — | 450 | V | QSQ350A series, t=100ms, full load |
| Input voltage transient | Room | — | — | 425 | V | QSQ150 series, t=100ms, full load |
| No-load input current a | Room, High, Low | — | 20 | — | mA | no load |
| Output voltage adjustment range | Room, High, Low | 80 | — | 110 | % | IO≤ maximum value and PO≤VO×IOmax |
| Line regulation | Room | -1 | — | +1 | % | full input-voltage range, full load |
| Load regulation | Room | -1 | — | +1 | % | rated input voltage, full load range |
| Turn-on delay a | Room | — | 50 | 100 | ms | time from power-on until output voltage reaches 10% time |
| Output voltage rise time a | Room | — | 75 | 140 | ms | output voltage from 10% rises to 90% time |
| ENA Turn-on delay a | Room | — | 40 | 100 | ms | time from enable assertion until output voltage reaches 10% time |
| Enable logic level (negative logic) | Room | 3.5 | — | 12 | V | no output when open or high, see the application guide for control methods |
| Enable logic level (negative logic) | Room | 0 | — | 0.7 | V | output enabled when grounded or low, see the application guide for control methods |
| Input undervoltage protection | Room | 150 | — | 178 | V | QSQ350A series, half load |
| Input undervoltage protection | Room | 170 | — | 198 | V | QSQ150 series, half load |
| Turn-on/turn-off overshoot | Room | -5 | — | +5 | % | full load |
| Output overvoltage protection | Room | 115 | 120 | 150 | %VO | hiccup mode, automatic recovery after overvoltage removal |
| Output overcurrent protection | Room | 115 | 120 | — | %IO | constant-current mode, automatic recovery after overcurrent removal |
| Output short-circuit protection | Room | — | — | — | — | constant-current mode, automatic recovery after removal of the short circuit |
| Isolation withstand voltage | Room | - | no breakdown, no flashover; input to output, 2250Vdc/60s/<3.5mA | |||
| Insulation resistance | Room | 100 | — | — | MΩ | 500Vdc, input, output, between each pair of terminals and case |
| Switching frequency | Room | — | 300 | — | kHz | |
| Weight | / | — | 88 | — | g |
Note: 1, for other 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, QSQ150 series case mounting holes are threaded (blind hole), QSQ*A series case mounting holes are threaded through-holes.
a: typical model CSQ350A-270S28NNM parameter values, values may differ for other models, contact technical support for details.
mechanical dimensions conform to GB/T 15138-94 requirements (Unit mm), for dimensions without a stated tolerance, the notation is X.X format, the dimensional tolerance is ±0.50mm; dimensions specified in X.XX format, the dimensional tolerance is ±0.25mm. marked in the drawing "*" dimensions are controlled by the manufacturing process.
Outline & Mechanical Dimensions
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