SGS Thomson Microelectronics GS-R1012 Datasheet

GS-R1012

120W STEP-DOWN SWITCHING REGULATOR

Type V

GS-R1012 18 to 36 V 12 V 10 A

i

V

o

I

o

FEATURES

Wide inputvoltage range (18 to 36V)
High efficiency(90%min.)
Paralleloperation with current sharing
Synchronization
Remote inhibit/enable
Remote load voltage sense
Output short-circuitprotection
Soft-start
PCB or chassismountable

DESCRIPTION

The GS-R1012 is a step-down switching voltage
regulator suitable to provide 12V/10A output volt­age from a wide input voltage range (18 to 36V).

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

DC Input Voltage
High Inhibit voltage
Storage Temperature Range
Operating Case Temperature Range

40 V
28 V

– 20 to +105 °C

0 to +75 °C

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T

T

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stg

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GS-R1012

ELECTRICALCHARACTERISTICS (T

Symbol

Input Voltage Vo= 12V Io= 1.5 to 10A

V

i

Input Current Vi= 24V Io= 10A

l

i

Reflected Input Current Vi= 24V Io= 10A

l

ir

V

V

l

iinh

V

V

δV

δV

∆V

I

I

osc

δI

t

tr1

tr2

R

* Note: when output current isless than1.5A, output ripple voltage increases due to discontinuous operation.

Enable Input Voltage Vi= 18 to 36V Io= 1.5 to 10A

ien

Inhibit Input Voltage Vi= 18 to 36V Io= 1.5 to 10A

iinh

Inhibit Input Current Vi= 18 to 36V Io=1.5 to 10A

Output Voltage Vi= 18 to 36V Io= 1.5 to 10A

o

Output Ripple

or

Voltage
Line Regulation Vi= 18 to 36V Io= 10A

OL

Load Regulation Vi= 24V Io= 1.5 to 10A

OO

Remote Sense

o

Compensation
Output Current* Vi= 18 to 36V Vo= 12V

I

o

Output Current

ol

Limiting
Short-circuit Output

Current
Current Sharing

o

Deviation

Soft-start Time Vi= 24V Io= 10A

ss

Line Transient
Recovery Time

Load Transient
Recovery Time

Switching Frequency Vi= 24V Io= 1.5 to 10A

f

s

η Efficiency Vi

Thermal Resistance

thc

Case-to-ambient

Parameter Test Conditions Min Typ Max Unit

=25°C unless otherwise specified)

amb

with external filter (C = 1000µF)

V

=5V

iinh

Vi= 24V
Io= 10A

Vi= 24V
Io= 10A

Vi= 18 to 36V

Vi= 24V

Vi= 24V
Io= 2 to 10A two modules in
parallel

Vi= 15 to 36V
Io=5A

Vi= 24V Io= 1.5 to 10A

= 18 to 36V Io= 10A

18 24 36 V

0 1.2 V
224V

11.4 12 12.6 V

010A

10.5 11.5 A

90 92 %

5,6 A

400 500 mApp

0.3 0.5 mA

150 mVpp

0.5 %
1%

0.5 V

16 A

10 %

15 ms
60 µs

100 µs

100 kHz

7.5 °C/W

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CONNECTION DIAGRAM AND MECHANICAL DATA

GS-R1012

Dimensionsin mm (inches).

PIN DESCRIPTION

Pin Function Description

1 GND Input
2 Inhibit

3 + Vin

4,5 + Vout

6 + Sense

7 Sync
8 Parallel
9 -Sense

10,11 GND Output

Return for input voltage source. Internally connected topin 10,11.
The converter is ON (Enable) when this pin is unconnected or the voltageapplied is lower

than 1.2V.The converter is OFF (Inhibit) for a control voltage in the range of 2 to24V.
DC Input voltage; recommended maximum voltage is 36V.

External capacitor between pin 3and pin 1 is mandatory; recommended value is
1000µF/50V for switching application.

+12V output voltage.
Senses the remote load high side. To be connectedto pin4,5 when remote sense is not

used.
Synchronization output. See figures 1,2,3,4. Take care to leave the pin open when is not

used.
Parallel output. See figures 1,2,3,4. Takecare to leave the pin open when is not used.
Senses the remote load return. To be connected to pin 10,11 when remote sense is not

used.In parallel configuration, take care to connect all -S pins together (see figures 1,2,3,4).
Return for output current path. Internally connected to pin 1.

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