SGS Thomson Microelectronics GS-R424, GS-R415, GS-R412, GS-R405S, GS-R405 Datasheet
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GS-R400 Family
20W TO 140W STEP-DOWN SWITCHING REGULATOR FAMILY
FEATURES
MTBF in excess of 200,000 hours
4A max output current
46V max input voltage
4V max drop-out voltage
Soft start
Remote logic inhibit/enable
Remote output voltage sense
Non-latching overload and short circuit protection
Crow-bar output overvoltage protection
DESCRIPTION
The GS-R400 series is a versatile family of high current, high voltage step-down switching voltage regulators.
The integral heatsink allows a large power handling capability and it provides also an effective shielding to minimize EMI.
SELECTION CHART
Type |
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Output |
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Input |
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Output |
Regulation |
Efficiency |
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Ordering |
Voltage |
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Voltage |
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Ripple |
Line |
Load |
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Notes |
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Number |
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(V) |
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(V) |
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(mVpp) |
(%) |
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(mV/V) |
(mV/A) |
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GS-R405 |
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5.1 ± 2% |
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9 to 46 |
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25 |
2 |
20 |
70 |
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Fixed output voltage |
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GS-R412 |
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12.0 ± 4% |
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16 to 46 |
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50 |
5 |
40 |
80 |
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" |
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GS-R415 |
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15.0 ± 4% |
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19 to 46 |
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65 |
5 |
60 |
85 |
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" |
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GS-R424 |
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24.0 ± 4% |
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28 to 46 |
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100 |
6 |
90 |
90 |
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GS-R405S |
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5.1 ± 2% |
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9 to 46 |
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25 |
2 |
20 |
70 |
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Reset output |
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GS-R400V |
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5.1 to 40 |
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Vo+4 to 46 |
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25 to 100 |
6 |
20 to 90 |
70 to 90 |
Progr. output voltage |
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GS-R400VB |
5.1 to 40 |
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Vo+4 to 46 |
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25 to 100 |
6 |
20 to 90 |
70 to 90 |
Progr. output voltage and |
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current. Frequency synchr. |
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Note: The line regulation is measured at Iout=1A |
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The load regulation is measured at Vin=Vo+8V and Iout=1 to 3A |
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For VO ³ 36V and Io = 4A an external heatsink or forced ventilation are required. |
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ABSOLUTE MAXIMUM RATINGS |
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Symbol |
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Parameter |
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Value |
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Unit |
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Vi |
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DC Input Voltage |
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48 |
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V |
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Irt* |
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Reset Output Sink Current |
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20 |
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mA |
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Tstg |
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Storage Temperature Range |
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– 40 to +105 |
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°C |
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Tcop |
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Operating Case Temperature Range |
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– 20 to +85 |
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°C |
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* GS-R405S only |
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June 1994 |
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1/5 |
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GS-R400 FAMILY
CONNECTION DIAGRAM AND MECHANICAL DATA
Pin 2 GS-R405S only
Pin 5,6,7 GS-R400VB only
Pin 12 GS-R400V/VB only
Dimensions in mm Bottom view
PIN DESCRIPTION
Pin |
Function |
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Description |
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1 |
Inhibit |
The module is disabled by a high logic level applied to this pin. |
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2 |
Reset |
Reset output (GS-R405S only). |
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3 |
+ Input |
DC input voltage. Recommended maximum voltage is 46V. |
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4 |
Input GND |
Return for input voltage source. |
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5 |
Oscillator |
100kHz oscillator output. To be connected to Sync (pin 6) input if the unit is a master and |
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left open if it is a slave (GS-R400VB only). See fig. 5. |
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6 |
Sync |
Synchronization input. To be connected to the Oscillator output (pin 5) of the master (GS- |
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R400VB only). See fig. 5. |
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7 |
Current limiting |
A resistor (³ 2.2kW) connected from this pin to pin 9 sets the current limiting level |
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(GS-R400VB only). |
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8 |
Output GND |
Return for output current path. |
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Internally connected to pin 4. |
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9 |
– Sense |
Senses the remote load return. Must be tied to pin 8 when the remote sensing feature is |
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not used. See fig. 1. |
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10 |
+ Sense |
Senses the remote load high side. Must be tied to pin 11 when the remote load sensing |
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feature is not used. See fig. 1. |
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11 |
+ Output |
Regulated DC output voltage. |
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12 |
Program |
A resistor (£ 18kW) connected between this pin and pin 10 sets the output voltage |
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(GS-R400V and GS-R400VB only). |
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2/5 |
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