PS10NG-G-M905 Supertex, PS10NG-G-M905 Datasheet - Page 7

• Manufacturer Part Number: PS10NG-G-M905
• Description: Quad Power Sequencing Controller
• Manufacturer: Supertex

Increasing the Under and Over Voltage Hysteresis
If the internal UV hysteresis is insufficient for a particular system application, then it may be increased by using separate
resis-tor dividers for UV and OV and providing a resistor feedback from UV pin to the PWRGD pin.
GND
-48V
R
R
UVHYS
UVHYS
16.5kΩ
can be calculated based on higher UV On voltage (say 42V):
= (V
= (1.22-0.65-0.4)/((42-1.22)/487kΩ - 1.22/16.5kΩ)
= 17.35kΩ
487kΩ
UVON
- V
DIODE
499kΩ
9.76kΩ
- V
PWRGDLOW
R
UVHYS
●
)/((V
1235 Bordeaux Drive, Sunnyvale, CA 94089
IN
-V
UVON
)/487kΩ - V
OV
VEE
UV
RTB
VIN
TB
UVON
RTC
PS10
/16.5kΩ)
TC
RTD
TD
7
RAMP
PWRGD-D
PWRGD-C
PWRGD-B
PWRGD-A
10nF
Note:
1. Other power good outputs will have the same configuration as
PWGRGD-A for Active High Enabled Converters.
2. Over voltage shut down set to 63.6V
●
Tel: [phone]
V+
EN
V-
●
www.supertex.com
DC/DC
Converter
+3.3V
COM
PS10