ZUP/NC401 TDK Corporation, ZUP/NC401 Datasheet - Page 43

• Manufacturer Part Number: ZUP/NC401
• Description: CABLE COMMUNICATIONS RS232
• Manufacturer: TDK Corporation
• Series: ZUPr

Specifications of ZUP/NC401

• Connector Type: D-Sub 09 pos Male to RS232 8 pos Male
• Length: 3.28' (1.00m)
• Cable Type: Round
• Color: White
• Shielding: Shielded
• Usage: Communication
• Cable Length: 1m
• Connector Type B: RJ45
• Connector Type A: DB9 Female
• Cable Assembly Type: Serial
• For Use With: ZUP Series Power Supplies
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 285-1666

4.4.15 Output Good Signal
Output Good Signal is an open collector output, referenced to COM potential, indicating the status of
the power supply output. While the power supply operates normally, the Output Good is low (0~0.8V).
When the power supply output is disabled due to activated OVP, OTP or FOLD protection, or by OUT
set to off, or by ac ON/OFF set to off, then the output signal stops conducting. The maximum sink
current is 10mA and the maximum voltage is 40VDC.
Typical applications of Output Good Signal
1. In multiple power supply systems, it is possible to disable all the units when a critical unit fails. Refer
( )
Fig. 4-15: Disabling multiple supply systems.
2. Hierarchical structure in multiple supply systems:It is possible to define a hierarchy in multiple supply
*
Critical
ZUP
Unit # 1
to Fig 4-15 for typical connection diagram.
systems by enabling any N+1 unit by the Output Good signal of the N unit. In this structure, failure of
the N unit will cause all the following units to be disabled. Refer to Fig 4-16 for typical connections
diagram.
The Output Good Signal is referenced to the COM potential, therefore pay attention NOT to
For models with output voltage rating greater than 40V use
a Zener diode to limit the Output Good voltage below 40V.
The resistor and Zener power rating must be greater than the
maximum actual power dissipation.
OUT.GOOD
ZUP # 2
ZUP # 1
+V
- V
short it to another potential as it may damage the unit.
PCn
COM
- V
OUT.GOOD
OUT.GOOD
I = 5mA
ON/OFF
ON/OFF
COM
COM
- V
+V
+V
PC1
( )
*
CAUTION
( )
*
( )
PC1-A
PC2-A
PC1-B
*
ZUP #
ZUP #
ZUP #
Fig. 4-16: Hierarchical structure in
OUT.GOOD
n
ON/OFF
n
n
COM
ON/OFF
ON/OFF
+V
multiple supply systems.
COM
COM
+V
- V
+V
- V
PCn
PC( -1)-B
PC1
n