5 Electrical Parameters
This section shows the electrical parameters of the SA50-120 Single Series device under the following conditions unless otherwise specified:
Parameter | Output | Conditions | Min | Nom | Max | Units |
|---|---|---|---|---|---|---|
Input voltage | ||||||
(Vin) | — | Note 2 | 86 | 120 | 158 | V |
Output voltage set point | ||||||
(VOUT) | 28V | IOUT = 100% rated load | 27.73 | 28.00 | 28.27 | V |
15V | 14.85 | 15.00 | 15.15 | |||
12V | 11.88 | 12.00 | 12.12 | |||
5V | 5.05 | 5.10 | 5.15 | |||
3.3V | 3.27 | 3.30 | 3.33 | |||
Output voltage adjust | ||||||
(VADJ) | — | — | 5 | — | — | % |
|
Output power | ||||||
(POUT) | 28V | Note 13 In all cases Output power must be kept within Pout rating. | 0.5 | — | 50 | W |
15V | 50 | |||||
12V | 50 | |||||
5V | 50 | |||||
3.3V | 33 | |||||
Output current | ||||||
(IOUT) | 28V | — |
0.18 | — | 1.8 | A |
15V | 0.33 | 3.3 | ||||
12V | 0.42 | 4.2 | ||||
5V | 0.1 | 10 | ||||
3.3V | 0.1 | 10 | ||||
Line regulation | ||||||
(VRLINE) | 28V | VIN = 86 V, 120 V, 158 V IOUT = 10%, 50%, 100% rated Note 12 | –56 | — | 56 | mV |
15V | –30 | 30 | ||||
12V | –24 | 24 | ||||
5V | ̶ 10 | 10 | ||||
3.3V | –10 | 10 | ||||
Load regulation | ||||||
(VRLOAD) | 28V | VIN = 86 V, 120 V, 158 V IOUT = 10%, 50%, 100% rated Note 11 | –280 | — | 280 | mV |
15V | –150 | 150 | ||||
12V | –120 | 120 | ||||
5V | ̶ 50 | 50 | ||||
3.3V | –50 | 50 | ||||
Input current | ||||||
(IIN) | — | IOUT=0, pin3 open | — | 10 | 35 | mA |
Pin 3 shorted to pin 2 | 3 | 5 | ||||
Output ripple | ||||||
(VRIP) | 28V | VIN = 86 V, 120 V, 158 V IOUT = 100% rated, Note 4 | — | 100 | 280 | mV p-p |
15V | 75 | 150 | ||||
12V | 60 | 120 | ||||
5V | 25 | 50 | ||||
3.3V | 25 | 50 | ||||
Switching frequency | ||||||
(FS) | — | Sync input (pin 4) open | 200 | 220 | 240 | kHz |
Efficiency | ||||||
(EFF) | 28V | IOUT = 100% rated load | 79 | 85 | — | % |
15V | 79 | 85 | — | |||
12V | 77 | 83 | — | |||
5V | 75 | 81 | — | |||
3.3V | 73 | 79 | — | |||
Inhibit input | ||||||
Inhibit input: ON Threshold | — | Note 1 | 4.5 | — | — | V |
Inhibit input: OFF (sink) | — | Note 1 | 1000 | — | — | µA |
Inhibit input: OFF Threshold | — | Note 1 | — | — | 2 | V |
Current limit point | ||||||
(% rated output) | — | When VOUT = 90% of nominal set point | 105 | — | 145 | % |
Synchronization | ||||||
|
frequency range | — | The external clock on sync input (pin 4) | 500 | — | 600 | kHz |
|
Synchronization pulse-high level | — | Note 1 | 4.0 | — | 10.0 | V |
|
Synchronization pulse-low level | — | Note 1 | –0.5 | — | 0.5 | V |
|
Synchronization pulse-transition rate | — | Note 1 | 200 | — | V/µs | |
Synchronization pulse-duty cycle | — | Note 1 | 10 | — | 80 | % |
Power dissipation, load fault | ||||||
(PD) | — | Short circuit, overload Note 6 | — | — | 24 | W |
Output response to step load changes | ||||||
(VTLD) | 28V | (50% to/from 100%) rated load Note 7 | –2200 | — | 2200 | mV peak |
15V | –1200 | 1200 | ||||
12V | –900 | 900 | ||||
5V | –300 | 300 | ||||
3.3V | –300 | 300 | ||||
Recovery time, step load changes | ||||||
(TTLD) | — | (50% to/from 100%) rated load Notes 7, 8 | — | 200 | 2000 | µs |
Output response to step line changes | ||||||
(VTLN) | 28V | 86V to/from 158V IOUT = 100% rated load Note 9 | –1000 | — | 1000 | mV peak |
15V | –600 | 600 | ||||
12V | –480 | 480 | ||||
5V | –300 | 300 | ||||
3.3V | –300 | 300 | ||||
Recovery time, step line changes | ||||||
(TTLN) | — | 86V to/from 158V IOUT = 100% rated load Notes 8, 9 | — | 200 | 2000 | µs |
Turn-on response: overshoot | ||||||
(VOS) (main) | 28V | (0% to 100%) rated load Notes 3, 4, 10 | — | — | 2800 | mV |
15V | — | — | 1500 | |||
12V | — | — | 1200 | |||
5V | — | — | 500 | |||
3.3V | — | — | 500 | |||
Turn-on response: turn-on delay | ||||||
(TDLY) | — | Note 10 | 0.1 | — | 10 | ms |
Capacitive load | ||||||
(CL) | 28V | Note 5 | — | — | 200 | µF |
15V | — | — | 350 | |||
12V | — | — | 450 | |||
5V | — | — | 1000 | |||
3.3V | — | — | 1000 | |||
Line rejection | ||||||
| — | — | DC to 50 kHz, IOUT = 100% rated load | 30 | 60 | — | dB |
Isolation | ||||||
| — | — | @25°C and 200V
| 100 | — | — | MΩ |
Mass | ||||||
| — | — | Standard case style A, B | — | 120 | — | g |
MTBF | ||||||
| — | — | MIL-HDBK-217F2, SF, 35°C | — | 8.22x106 | — | hrs |