The GCS Series has been designed to minimise the no load power consumption and
maximise efficiency in order to facilitate equipment design to the latest environmental
legislation.
Approved for Class I and Class II applications, this range of single output AC-DC power
supplies are packaged in an industry standard 3.0" x 5.0" x 1.42" package and achieves
EN55011/22 Level B emissions compliance whilst maintaining very low earth leakage
currents, making them suitable for a wide range of 1U and other industrial, IT and medical
applications.
The series has single output versions from 12 V to 48 VDC, dual-fusing for compliance
with IEC60601-1 and feature minimal excess heat generation as efficiencies reach 94%.
They will deliver up to 250 W of power over an operating range of -40 °C and up to +70
°C and are available with a number of cover options.
Dimensions:
GCS150/GCS180/GCS250:
5.00 x 3.00 x 1.42” (127.0 x 76.2 x 36.3 mm)
(C): 5.50 x 3.48 x 1.70” (139.7 x 88.5 x 43.2 mm)
(TF): 5.50 x 3.48 x 2.20” (139.7 x 88.5 x 57.8 mm)
(EF): 6.35 x 3.48 x 1.70” (161.3 x 88.5 x 43.2 mm)
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1
Models & Ratings
Notes
1. Add suffix -C for convection cooled cover, e.g. GCS150PS12-C.
2. Add suffix -EF for fan cooled cover with end fan e.g. GCS150PS12-EF. Note Vfan output no longer available.
3. Add suffix -TF for fan cooled cover with top fan, e.g. GCS150PS12-TF. Note Vfan output no longer available.
4. Add suffix -R for remote on/off, e.g. GCS150PS12-R, GCS150PS12-RC with convection cover or GCS150PS12-REF/GCS150PS12-RTF with fan covers.
5. GCS250PS12-C & GCS250PS15-C models derate 20% when convection cooled.
6. GCS250 with 5 V Standby available Q3 2014.
Output Voltage V1 Output Current V1 Output Voltage (Vfan)
& Current Max Output Power Model Number (1,2,3,4,5)
Convection-cooled Forced-cooled (7 CFM)
12.0 VDC 9.2 A 12.5 A 12.0 VDC/0.6 A 157 W GCS150PS12
15.0 VDC 7.3 A 10.0 A 12.0 VDC/0.6 A 157 W GCS150PS15
24.0 VDC 4.6 A 6.3 A 12.0 VDC/0.6 A 157 W GCS150PS24
28.0 VDC 3.9 A 5.4 A 12.0 VDC/0.6 A 157 W GCS150PS28
48.0 VDC 2.3 A 3.2 A 12.0 VDC/0.6 A 157 W GCS150PS48
12.0 VDC 12.5 A 15.0 A 12.0 VDC/0.6 A 187 W GCS180PS12
15.0 VDC 10.0 A 12.0 A 12.0 VDC/0.6 A 187 W GCS180PS15
24.0 VDC 6.3 A 7.5 A 12.0 VDC/0.6 A 187 W GCS180PS24
28.0 VDC 5.4 A 6.4 A 12.0 VDC/0.6 A 187 W GCS180PS28
48.0 VDC 3.1 A 3.7 A 12.0 VDC/0.6 A 187 W GCS180PS48
12.0 VDC 15.0 A 18.8 A 12.0 VDC/0.6 A 232 W GCS250PS12
15.0 VDC 12.0 A 15.0 A 12.0 VDC/0.6 A 232 W GCS250PS15
24.0 VDC 7.5 A 10.4 A 12.0 VDC/0.6 A 257 W GCS250PS24
28.0 VDC 6.4 A 8.9 A 12.0 VDC/0.6 A 257 W GCS250PS28
48.0 VDC 3.7 A 5.2 A 12.0 VDC/0.6 A 257 W GCS250PS48
56.0 VDC 3.2 A 4.5 A 12.0 VDC/0.6 A 257 W GCS250PS56
GCS Series AC-DC Power Supplies
• Convection/Forcedcooled Ratings
• Universal 85 264 VAC Input
• IT & Medical Safey Approvals (Class I & II)
• < 0.5 W Standby Power (150 & 180 Models)
• 40° C to +70° C Operation
• Remote On/Off (R Models)
• Class B Emissions
• 3 Year Warranty
150/180/250 Watts
60
120
140
160
180
200
220
240
260
80
Output Power (W)
Input Voltage (VAC)
GCS150PSxx forced-cooled (All models)
GCS180PSxx convection-cooled (All models)
GCS180PSxx forced-cooled (All models)
GCS250PSxx convection-cooled (All models)
GCS150PSxx convection-cooled (All models)
100
85 90 264220 230 240 250 260 270100 110 120
GCS250PSxx forced-cooled (12 & 15 V)
GCS250PSxx forced-cooled (24, 28 & 48 V)
Input
Output
GCS Series
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AC-DC Power Supplies
Input Voltage Derating Curve
Figure 1
Output Overload Characteristic
Characteristic Minimum Typical Maximum Units Notes & Conditions
Input Voltage - Operating 85 115/230 264 VAC Derate output power <90 VAC. See fig 1.
Input Frequency 47 50/60 63 Hz
Power Factor >0.9 230 VAC, 100% load
Input Current - Full Load
1.5/0.7
A
GCS150: 115/230 VAC
1.8/0.8 GCS180: 115/230 VAC
2.2/1.1 GCS250 12-15 V models: 115/230 VAC
2.4/1.2 GCS250 ≥24 V models: 115/230 VAC
Inrush Current 80 A 230 VAC cold start 25 °C
No Load Input Power
0.5
W
All GCS150 & GCS180 (including -R Models)
2.3 GCS150 & GCS180 -R Models with inhibit activated
5 All GCS250 (including -R Models) 115V AC
3 All GCS250 (including -R Models) 230V AC
1 GCS250 -R Models with inhibit activated 115V AC
3 GCS250 -R Models with inhibit activated 230V AC
0.5 Available for GCS250 models, contact sales
Earth Leakage Current
60/120 200
µA
GCS150: 115/230 VAC/50 Hz Typ., 264 VAC/60 Hz Max.
95/185 250 GCS180: 115/230 VAC/50 Hz Typ., 264 VAC/60 Hz Max.
95/185 250 GCS250: 115/230 VAC/50 Hz Typ., 264 VAC/60 Hz Max.
Input Protection GCS150/180: F3.15 A/250 V internal fuse in both lines. GCS250: F5.0 A/250 V internal fuse in both lines.
Characteristic Minimum Typical Maximum Units Notes & Conditions
Output Voltage - V1 12 48 VDC See Models and Ratings table
Initial Set Accuracy ±1 (V1) & ±5(Vfan) % 50% load, 115/230 VAC
Output Voltage Adjustment -V1 ±2 % Via potentiometer. See mech. details, Vfan will track
Minimum Load 0A
Start Up Delay 0.5 s 115/230 VAC full load
Hold Up Time
20
ms
GCS150 Models
16/18 GCS180 Models
25 GCS250PS12 (225W)
17 GCS250 Other Models (250W)
Drift ±0.2 % After 20 min warm up
Line Regulation ±0.5 % 90-264 VAC
Load Regulation ±0.5 (V1) , ±5(Vfan) % 0-100% load
Transient Response - V1 4%
Recovery within 1% in less than 500 µs
for a 50-75% and 75-50% load step
Over/Undershoot - V1 0%All models except GCS150PS48
Ripple & Noise - V1 1 % pk-pk 20 MHz bandwidth, 12V Models 1.5% max
Overvoltage Protection - V1 110 140 % Vnom DC. Output 1, recycle input to reset
Overload Protection - V1 110 150 % I nom See fig. 2. Trip and Restart
Short Circuit Protection - V1 Continuous
Temperature Coefficient 0.05 %/˚C
Overtemperature Protection °C Not fitted
Trip & Restart
0
12
10
8
6
4
2
Output Voltage (V)
Output Load (A)
0246810 12 14 16 18 20 22 24
Figure 2
GCS180PS12 example (other similar).
GCS Series
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AC-DC Power Supplies
3
General
Efficiency Vs Load
Figure 3
12 V Models
Figure 4
24 V Models
Figure 5
48 V Models
Characteristic Minimum Typical Maximum Units Notes & Conditions
Efficiency
93 % 230 VAC Full load (see fig.3-5)
80 Plus Silver All models except 12 V models
80 Plus Bronze 12 V models
Isolation: Input to Output
Input to Ground
Output to Ground
4000 VAC
1500 VAC
1500 VAC
Switching Frequency 60 200 kHz PFC Converter
90 150 Main Converter
Power Density
7.4
W/in3
GCS150
8.8 GCS180
12.1 GCS250
Mean Time Between Failure 569 kHrs MIL-HDBK-217F, Notice 2 +25 °C GB
Weight: Open Frame
End Fan Unit
Top Fan Unit
Covered Unit
0.65 (0.29) lb (kg)
1.30 (0.59) lb (kg)
1.15 (0.52) lb (kg)
1.05 (0.48) lb (kg)
0.00%
10.00%
20.00%
30.00%
40.00%
50.00%
60.00%
70.00%
80.00%
90.00%
100.00%
20% 25% 50% 67% 75% 100%
Load %
Efficiency (%)Efficiency (%)Efficiency (%)
115V
230V
0.00%
10.00%
20.00%
30.00%
40.00%
50.00%
60.00%
70.00%
80.00%
90.00%
100.00%
20% 25% 50% 67% 75% 100%
Load %
115V
230V
0.00%
10.00%
20.00%
30.00%
40.00%
50.00%
60.00%
70.00%
80.00%
90.00%
100.00%
20% 25% 50% 67% 75% 100%
Load %
115V
230V
GCS Series AC-DC Power Supplies
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Signals & Controls
Figure 6
Remote On/Off (Inhibit)
Figure 8
Thermal Derating Curve
Figure 7
Remote On/Off (Enable)
Characteristic Notes & Conditions
Remote Sense Compensates for 0.5 V total voltage drop
Remote On/Off (-R models)
Inhibit The inhibit lo (pin 4), should be pulled below 0.4 V to switch V1 & Vfan off. Open circuit or >4 V to
switch on (see fig. 6)
Enable With the inhibit lo (pin 4) pulled low as detailed above, connecting inhibit hi (pin 5) to inhibit lo (pin 4)
will enable V1 & V fan output. (see fig. 7)
0 V
Inhibit Lo
Pin 4
POWER SUPPLY
Signals Connector
0 V
Inhibit Lo
Pin 4
Inhibit Hi
Pin 5
POWER SUPPLY
Signals Connector
Environmental
Characteristic Minimum Typical Maximum Units Notes & Conditions
Operating Temperature -40 +70 °C See derating curve, fig. 8
Storage Temperature -40 +85 °C
Cooling 7 CFM
Forced Cooled >110 W GCS150
Forced Cooled >150 W GCS180
Forced Cooled >180 W GCS250
Humidity 5 95 %RH Non-condensing
Operating Altitude 5000 m
Shock
±3 x 30g shocks in each plane, total 18 shocks. 30g =
11ms (+/-0.5msec), half sine. Conforms to EN60068-2-27
& EN60068-2-47
Vibration Single axis 10 - 500 Hz at 2g sweep and endurance at
resonance in all 3 planes. Conforms to EN60068-2-6
-40 -20 0 +70+50
50
100
Ambient Temperature (ºC)
Some specification
parameters may not be met
Output Load (%)
0
GCS Series AC-DC Power Supplies
55www.xppower.com
Safety Approvals
EMC: Immunity
EMC: Emissions
Phenomenon Standard Test Level Criteria Notes & Conditions
Conducted EN55011/22 Class B
Radiated EN55011/22
Class B GCS150
Class A GCS180 & GCS250
Class B
GCS180 & GCS250 with 3 turns of output cable
through added ferrite core. (Manufacturer:
Fair - Rite Products Corp, Part No: 2643800502)
Harmonic Fluctuations EN61000-3-3
Safety Agency Safety Standard Notes & Conditions
CB Report IEC60950-1:2005 Ed 2 Information Technology
IEC60601-1 Ed 3 Including Risk Management Medical
UL UL60950-1 (2007), CSA 22.2 No.60950-1-1:08 Information Technology
ANSI/AAMI ES60601-1:2005 & CSA C22.2, No.60601-1:08 Medical
TUV EN60950-1:2006 Information Technology
EN60601-1/A12:2006 Medical
CE LVD & RoHS
Equipment Protection Class Class I & Class II See safety agency conditions of acceptibility for details
Means of Protection Category
Primary to Secondary 2 x MOPP (Means of Patient Protection)
IEC60601-1 Ed 3Primary to Earth 1 x MOPP (Means of Patient Protection)
Secondary to Earth 1 x MOPP (Means of Patient Protection)
Phenomenon Standard Test Level Criteria Notes & Conditions
Low Voltage PSU EMC EN61204-3 High severity level as below
Harmonic Current EN61000-3-3
Class A All models
Class C
> 50 W GCS150
> 50 W GCS180
> 80 W GCS250
Radiated EN61000-4-3 3A
EFT EN61000-4-4 3A
Surges EN61000-4-5 Installation class 3 A
Conducted EN61000-4-6 3A
Dips and Interruptions
EN55024
(100 VAC)
Dip >95% (0 VAC), 8.3ms A
Dip 30% (70 VAC), 416ms B
Dip >95% (0 VAC), 4160ms B
EN55024
(240 VAC)
Dip >95% (0 VAC), 10.0ms A
Dip 30% (168 VAC), 500ms B
Dip >95% (0 VAC), 5000ms B
EN60601-1-2
(100 VAC)
Dip >95% (0 VAC), 10.0ms A
Dip 60% (40 VAC), 100ms A
Derate Output Power to 85 W (GCS150)
Derate Output Power to 90 W (GCS180)
Derate Output Power to 120 W (GCS250)
Dip 30% (70 VAC), 500ms A
Dip >95% (0 VAC), 5000ms B
EN60601-1-2
(240 VAC)
Dip >95% (0 VAC), 10.0ms A
Dip 60% (96 VAC), 100ms A
Dip 30% (168 VAC), 500ms A
Dip >95% (0 VAC), 5000ms B
GCS Series AC-DC Power Supplies
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Mechanical Details
Notes
1. All dimensions in inches (mm).
2. Tolerance .xx = ±0.02 (0.50); .xxx = ±0.01 (0.25)
3. Weight: 0.65 lbs (0.29 kg)
4. J1 mates with Molex Housing Pn. 09-50-1031. J2 mates with Molex
Housing Pn. 09-50-1061 and both with Molex series 5194 crimp
terminals. J4 mates with JST Housing Pn. PHDR-10VS and with JST
SPHD-001T-P0.5 crimp terminals. J3 mates with Molex Housing Pn.
51191-0200 and with Molex series 50802 crimp terminals.
5.0 (127.0)
4.5 (115.57)0.225 (5.72)
0.20 (5.1)
Note: Mounting points A should be connected
together for optimum EMI performance
1.42
(36.3)
2.40
(61.0)
3.00
(76.2)
2.15
(54.6)
L3
A
C6
Q3
T1
C23
C45
A
A
C28
Q1
2.55
(64.7) 1.18
(29.8)
0.61
(15.6)
0.14 (3.5)
0.20 (5.1)
0.225 (5.72)
0.25 Faston Ground Tab
4 x 0.156 (3.96) mounting holes
ø.312 (7.92) clearance top and bottom
0.18 (4.6)
0.15 (3.8)
SMD Component Height
AIRFLOW
5.0 (127.0)
4.5 (115.57)0.225 (5.72)
0.20 (5.1)
Note: Mounting points A should be connected
together for optimum EMI performance
1.42
(36.3)
2.40
(61.0)
3.00
(76.2)
2.15
(54.6)
L3
A
C6
Q3
T1
C23
C45
A
C28
Q1
2.55
(64.7) 1.18
(29.8)
0.61
(15.6)
0.14 (3.5)
0.20 (5.1)
0.225 (5.72)
0.25 Faston Ground Tab
4 x 0.156 (3.96) mounting holes
ø.312 (7.92) clearance top and bottom
0.18 (4.6)
0.15 (3.8)
SMD Component Height
AIRFLOW
Output Connector J2
Molex pn. 09-65-2068
Pin Single Output
1 +V1
2 +V1
3 +V1
4 RTN
5 RTN
6 RTN
Input Connector J1
Molex pn. 09-65-2038
Pin Function
1 Line
2 Neutral
Signal Connector J4
JST PN B10B-PHDSS
Pin Single Output
1 +Sense
2 -Sense
3 XP Internal Use
4 Inhibit LO
5 Inhibit HI
6 N/C
7 N/C
8 N/C
9 N/C
10 N/C
Fan Connector J3
Molex pn. 22-04-1021
Pin Function
1 Fan +(12 V)
2 Fan -
GCS150
GCS180
GCS Series AC-DC Power Supplies
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Mechanical Details
Notes
1. All dimensions in inches (mm).
2. Tolerance .xx = ±0.02 (0.50); .xxx = ±0.01 (0.25)
3. Weight: 0.65 lbs (0.29 kg)
4. J1 mates with Molex Housing Pn. 09-50-1031.
J2 mates with Molex Housing Pn. 09-50-1061
and both with Molex series 5194 crimp
terminals. J4 mates with JST Housing Pn. PHDR-10VS and with JST SPHD-
001T-P0.5 crimp terminals. J3 mates with Molex Housing Pn. 51191-0200
and with Molex series 50802 crimp terminals.
Output Connector J2
Molex pn. 09-65-2068
Pin Single Output
1 +V1
2 +V1
3 +V1
4 RTN
5 RTN
6 RTN
Input Connector J1
Molex pn. 09-65-2038
Pin Function
1 Line
2 Neutral
Signal Connector J4
JST PN B10B-PHDSS
Pin Single Output
1 +Sense
2 -Sense
3 XP Internal Use
4 Inhibit LO
5 Inhibit HI
6 N/C
7 N/C
8 N/C
9 N/C
10 N/C
Fan Connector J3
Molex pn. 22-04-1021
Pin Function
1 Fan +(12 V)
2 Fan -
5.0 (127.0)
4.5 (115.57)0.225 (5.72)
0.20 (5.1)
Note: Mounting points A should be connected
together for optimum EMI performance
1.42
(36.3)
2.40
(61.0)
3.00
(76.2)
2.15
(54.6)
L3
A
C6
Q3
T1
C23
C45
A
C28
Q1
2.55
(64.7) 1.18
(29.8)
0.61
(15.6)
0.14 (3.5)
0.20 (5.1)
0.225 (5.72)
0.25 Faston Ground Tab
4 x 0.156 (3.96) mounting holes
ø.312 (7.92) clearance top and bottom
0.18 (4.6)
0.15 (3.8)
SMD Component Height
AIRFLOW
5.0 (127.0)
4.5 (115.57)0.225 (5.72)
0.20 (5.1)
Note: Mounting points A should be connected
together for optimum EMI performance
1.42
(36.3)
2.40
(61.0)
3.00
(76.2)
2.15
(54.6)
L3
A
C6
Q3
T1
C23
C45
A
C28
Q1
2.55
(64.7) 1.18
(29.8)
0.61
(15.6)
0.14 (3.5)
0.20 (5.1)
0.225 (5.72)
0.25 Faston Ground Tab
4 x 0.156 (3.96) mounting holes
ø.312 (7.92) clearance top and bottom
0.18 (4.6)
0.15 (3.8)
SMD Component Height
AIRFLOW
GCS250 1215 V models
GCS250 Other models
GCS Series AC-DC Power Supplies
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Covered (C)
J1
J2
1
6
J4
1
210
J3
12
1
2
0.39
(10.0)
0.93
(23.7)
2.39
(60.7)
0.45
(11.4)
1.70
(43.2)
4.72 (120.0)
5.50 (139.7)
4 x M3 x 0.5 THD
0.16 (4.0) max
screw penetration
3.48
(88,5)
2.64
(67.0)
0.85
(21.6)
0.25 Faston
Ground Tab
0.43
(10.8) 0.45
(11.4)
0.39
(10.0)
1.96
(50.0)
0.76
(19.3)
4.72 (120.0)
4 x M3 x 0.5 THD
0.16 (4.0) max
screw penetration
Mechanical Details
Notes
1. All dimensions in inches (mm).
2. Tolerance .xx = ±0.02 (0.50); .xxx = ±0.01 (0.25)
3. J1 mates with Molex Housing Pn. 09-50-1031.
J2 mates with Molex Housing Pn. 09-50-1061
and both with Molex series 5194 crimp
terminals. J4 mates with JST Housing Pn.
PHDR-10VS and with JST SPHD-001T-P0.5 crimp terminals. J3 mates with
Molex Housing Pn. 51191-0200 and with Molex series 50802 crimp terminals.
4. In class II installations the cover is floating and provides 1 x MOPP (2 x MOOP).
5. Weight: 1.05 lbs (0.48 kg)
Output Connector J2
Molex pn. 09-65-2068
Pin Single Output
1 +V1
2 +V1
3 +V1
4 RTN
5 RTN
6 RTN
Input Connector J1
Molex pn. 09-65-2038
Pin Function
1 Line
2 Neutral
Signal Connector J4
JST PN B10B-PHDSS
Pin Single Output
1 +Sense
2 -Sense
3 XP Internal Use
4 Inhibit LO
5 Inhibit HI
6 N/C
7 N/C
8 N/C
9 N/C
10 N/C
Fan Connector J3
Molex pn. 22-04-1021
Pin Function
1 Fan +(12 V)
2 Fan -
GCS Series AC-DC Power Supplies
99www.xppower.com
Top Fan (TF)
Mechanical Details
Notes
1. All dimensions in inches (mm).
2. Tolerance .xx = ±0.02 (0.50); .xxx = ±0.01 (0.25)
3. J1 mates with Molex Housing Pn. 09-50-1031.
J2 mates with Molex Housing Pn. 09-50-1061
and both with Molex series 5194 crimp
terminals. J4 mates with JST Housing Pn.
PHDR-10VS and with JST SPHD-001T-P0.5 crimp terminals. J3 mates with
Molex Housing Pn. 51191-0200 and with Molex series 50802 crimp terminals.
4. In class II installations the cover is floating and provides 1 x MOPP (2 x MOOP).
5. Weight: 1.15 lbs (0.52 kg)
Output Connector J2
Molex pn. 09-65-2068
Pin Single Output
1 +V1
2 +V1
3 +V1
4 RTN
5 RTN
6 RTN
Input Connector J1
Molex pn. 09-65-2038
Pin Function
1 Line
2 Neutral
Signal Connector J4
JST PN B10B-PHDSS
Pin Single Output
1 +Sense
2 -Sense
3 XP Internal Use
4 Inhibit LO
5 Inhibit HI
6 N/C
7 N/C
8 N/C
9 N/C
10 N/C
Fan Connector J3
Molex pn. 22-04-1021
Pin Function
1 Fan +(12 V)
2 Fan -
End Fan (EF)
6.35 (161.3)
1.90
(48.2)
J1
1
2
1.10
[27.8]
J2
1
6
J4
1
210
J3
12
0.43
(10.8)
2.63
(66.9)
0.84
(21.5)
0.45 (11.4) 0.45 (11.4)
0.25 Faston (Right Angle) Ground Tab
3.48
(88.5)
1.70
(43.2)
0.93
(23.7)
0.76
(19.3)
1.96
(50.0)
0.39
(10.0)
0.39 (10.0) 4.72 (120.0)
4.72 (120.0)
2 x M3 x 0.5 THD
0.16 (4.0) max
screw penetration
4 x M3 x 0.5 THD
0.16 (4.0) max
screw penetration
5.50 (139.7)
Mechanical Details
GCS Series AC-DC Power Supplies
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Notes
1. All dimensions in inches (mm).
2. Tolerance .xx = ±0.02 (0.50); .xxx = ±0.01 (0.25)
3. J1 mates with Molex Housing Pn. 09-50-1031.
J2 mates with Molex Housing Pn. 09-50-1061
and both with Molex series 5194 crimp
terminals. J4 mates with JST Housing Pn.
PHDR-10VS and with JST SPHD-001T-P0.5 crimp terminals. J3 mates with
Molex Housing Pn. 51191-0200 and with Molex series 50802 crimp terminals.
4. In class II installations the cover is floating and provides 1 x MOPP (2 x MOOP).
5. Weight: 1.30 lbs (0.59 kg)
Output Connector J2
Molex pn. 09-65-2068
Pin Single Output
1 +V1
2 +V1
3 +V1
4 RTN
5 RTN
6 RTN
Input Connector J1
Molex pn. 09-65-2038
Pin Function
1 Line
2 Neutral
Signal Connector J4
JST PN B10B-PHDSS
Pin Single Output
1 +Sense
2 -Sense
3 XP Internal Use
4 Inhibit LO
5 Inhibit HI
6 N/C
7 N/C
8 N/C
9 N/C
10 N/C
Fan Connector J3
Molex pn. 22-04-1021
Pin Function
1 Fan +(12 V)
2 Fan -
GCS Series AC-DC Power Supplies
www.xppower.com 13March14
Estimated Service Life vs Component Temperature
In order to ensure safe operation of the PSU in the end-use equipment, the temperature of the components listed in the table below must
not be exceeded. Temperature should be monitored using K type thermocouples placed on the hottest part of the component
(out of direct air flow). See Mechanical Details for component locations.
--
The estimated service life of the GCS Series is determined by the cooling arrangements and load conditions experienced in the end
application. Due to the uncertain nature of the end application this estimated service life is based on the actual measured temperature of a
key capacitors with in the product when installed by the end application. The worst case of the two figures should be taken as the indicative
service life in 24/7 operation.
The graph below expresses the estimated lifetime of a given component temperature and assumes continuous operation at this
temperature.
Temperature Measurements (At Ambient 50 °C)
Component Max Temperature °C
T1 Coil 120 °C
L3 Coil 120 °C
Q1 Body 120 °C
Q3 Body 120 °C
C6 105 °C
C23 105 °C
0
20000
40000
60000
80000
100000
120000
105
95
85
75
65
55
Lifetime (Hrs)
C6 Temperature (°C)
0
10000
20000
30000
40000
50000
60000
70000
105 95 85 75 65 55
Lifetime (Hrs)
C6 Temperature (°C)
Thermal Considerations
Service Life
GCS150/180 GCS250
0
20000
40000
60000
80000
100000
120000
105
95
85
75
65
55
Lifetime (Hrs)
C6 Temperature (°C)
0
10000
20000
30000
40000
50000
60000
70000
105 95 85 75 65 55
Lifetime (Hrs)
C6 Temperature (°C)
5000
25000
45000
65000
85000
105000
125000
145000
165000
185000
105 95 85 75 65
C23 Temperature (°C)
Lifetime (Hrs)
55
5000
25000
45000
65000
85000
105000
125000
145000
165000
185000
105 95 85 75 65
C23 Temperature (°C)
Lifetime (Hrs)
55
GCS150/180 GCS250
GCS150/180 GCS250