gs-r12fp STMicroelectronics, gs-r12fp Datasheet - Page 8

• Manufacturer Part Number: gs-r12fp
• Description: 1.9 A Dc-dc Converter Modules
• Manufacturer: STMicroelectronics

Application information
4.6
4.7
4.8
8/14
Thermal shutdown
The shutdown block generates a signal that turns OFF the power stage if the temperature of
the internal chip goes higher than a fixed internal threshold (150 °C min).
The sensing element of the chip is very close to the PDMOS area, so ensuring an accurate
and fast temperature detection.
An hysteresis of approximately 20 °C avoids that the devices turns ON and OFF
continuously.
Output voltage programming (GS-R12FP0001.9 only)
The GS-R12FP0001.9 output voltage is 5.54 V ±4 %, to reduce this value connect a resistor
between pin 10 (FB) and pin 9 (V
The resistor must be located very close to the proper pins, to minimize the injected noise
(see
The resistor value is calculated using the following formula:
Rv = [(V
V
Loop compensation (GS-R12FP0001.9 only)
If required by particular load conditions, it is possible to change the feedback loop
compensation, adding an external capacitor between pin 10 (FB) and pin 9 (V
act as speed up (see
out
can be adjusted between 1.235 V (Rv = 0 Ω) and 5.54 V (Rv = open)
Figure
out
- 1.235) * 11.3] / 5.54 - V
4).
Figure
5).
out
).
out
) --[kΩ]
out
), which will
GS-R12FP