Power modules (1/32 brick) – QSM
The QSM power module family is described by the configuration-specific ratings in the following tables. DC/DC isolated conversion. Maximum output power: 40W. 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 (1/32 brick) - QSM
The QSM power module family is described by the configuration-specific ratings in the following tables. DC/DC isolated conversion. Maximum output power: 40W. Input undervoltage protection. Refer to the selection table, pin assignments and application guidance for the selected configuration.
- DC/DC isolated conversion
- Maximum output power: 40W
- Input undervoltage protection
- Output 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 (%) Typical | Capacitive load (µF) max. | Ripple (mV) Typical |
|---|---|---|---|---|---|---|
| QSM40-18S12SNM | 9 to 36 | 12 | 3.33 | 86 | 2000 | 30 |
| QSM40-18S15SNM | 9 to 36 | 15 | 2.67 | 87 | 2200 | 100 |
| QSM40-18S24SNM | 9 to 36 | 24 | 1.67 | 85 | 1000 | 70 |
| QSM40-18S28SNM | 9 to 36 | 28 | 1.43 | 86 | 800 | 100 |
| QSM40-28S05SNM | 16 to 40 | 5 | 8.00 | 85 | 4500 | 100 |
| QSM40-28S12SNM | 16 to 40 | 12 | 3.33 | 86 | 3000 | 80 |
| QSM40-28S15SNM | 16 to 40 | 15 | 2.67 | 87 | 3000 | 100 |
| QSM40-28S24SNM | 16 to 40 | 24 | 1.67 | 85 | 1200 | 70 |
| QSM40-28S28SNM | 16 to 40 | 28 | 1.43 | 86 | 1000 | 100 |
| QSM40-28S36SNM | 16 to 40 | 36 | 1.12 | 89 | 470 | 85 |
Technical Data — QSM
| Characteristic | Test temperature | Min. | Typ. | Max. | Unit | Conditions |
|---|---|---|---|---|---|---|
| Input voltage range | Room, High, Low | 9 | 28 | 36 | V | 18 series, see the product selection table |
| Input voltage range | Room, High, Low | 16 | 28 | 40 | V | 28 series, see the product selection table |
| Input surge voltage | Room | — | — | 50 | V | 18/28 series, Vt=100ms, full load |
| No-load power consumption a | Room | — | 0.6 | — | W | nominal input voltage, no output load |
| Output voltage adjustment range | Room, High, Low | 80 | — | 110 | %VO | Io≤ maximum value and Po≤Vo×Iomax, 5V minimum output trim-down value 4.5V |
| 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 |
| Turn-on delay a | Room | — | 15.2 | — | ms | time from power-on until output voltage reaches 10% time |
| Output voltage rise time a | Room | — | 9 | — | ms | output voltage from 10% rises to 90% time |
| ENA Turn-on delay a | Room | — | 14.8 | — | 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 | 6 | — | 8.8 | V | half load, 9V to 36V input-voltage series |
| Input undervoltage protection | Room | 11 | — | 15.8 | V | half load, 16V to 40V input-voltage series |
| Output overcurrent protection | Room | 110 | — | — | %IO | hiccup mode, automatic recovery after overcurrent removal |
| Output short-circuit protection | Room | — | — | — | — | hiccup mode, automatic recovery after removal of the short circuit |
| 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 a | Room | — | 270 | — | kHz | |
| MTBF | Room | — | 1.8 | — | 106h | ensure a good ground plane (GB), 25°C |
| Weight | / | — | 21 | — | g | S case type |
| Weight | / | — | 23 | — | g | F 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, for example, an input-voltage range of 9Vdc to 12Vdc, continuous output loading, derate to 30W use; 3, electrical data and mechanical dimensions in this manual are for product selection reference, the detailed product specification governs the final requirements; 4, see the typical application circuit for the ripple measurement method.
a: typical model QSM40-28S12SNM time, values may differ for other models, contact technical support for details.
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