DC-DC
Specification
50-200 Watts
•2:1 & 4:1 Input Ranges
•Efficiency up to 90%
•Single Output
•-40 °C to +100 °C Operating Temperature
•Continuous Short Circuit Protection
•Five-sided Metal Case
•3 Year Warranty
ICH/IFH Series
Input
Input Voltage Range • See tables
Input Current (no load) • See tables
Input Reverse Voltage • None
Protection
Input Filter • Pi network
Undervoltage Lockout • 2:1 Input Models:
12 Vin, power up 8.8 V, down 8.0 V
24 Vin, power up 17.0 V, down 16.0 V
48 Vin, power up 34.0 V, down 32.5 V
4:1 Input Models:
24 Vin, power up 8.8 V, down 8.0 V
48 Vin, power up 17.0 V, down 16.0 V
Output
Output Voltage Trim • ±10%
Initial Set Accuracy • ±1% max (ICH100: ±1.5%)
Line Regulation • ±0.2% max measured from high line
to low line
Load Regulation • ±0.2% max measured from 0-100% load
Transient Response • 5% max deviation, recovery to within
1% in 500 µs, 25% step load change
Ripple & Noise • 3.3 & 5 V models: 100 mV pk-pk
12 & 15 V models: 150 mV pk-pk
24, 28 & 48 V models: 1% max pk-pk
ICH50/75 - 3.3 V, 5 V models: 75 mV
12 V, 15 V models: 100 mV
20 MHz bandwidth (see note 3)
Overvoltage Protection • 115-140%
Short Circuit Protection • ICH50/75/100W/IFH200-: Trip & restart
(hiccup mode) with auto recovery
ICH50W/75W/100/150 & IFH200: Current
limit, auto recovery
Temperature • ±0.03%/°C
Coefficient
Current Limit • IFH200: 110-150% nominal output, all
other models: 110-160% nominal output
Remote On/Off • See note 1 & 2
Thermal Shutdown • ICH50/50W/75/75W/100/150:
Thermal shutdown when case temperature
reaches 100 °C, auto recovery when case
temperature < +60 °C
ICH100W/IFH200:
Thermal shutdown when case temperature
reaches 105 °C, auto recovery when case
temperature <+90 °C
xppower.com
General
Efficiency • See tables
Isolation Voltage • 1500 VDC Input to Output
1500 VDC Input to Case
1500 VDC Output to Case
Isolation Resistance • 107 ohms min
Switching Frequency • ICH50/75 12-24V models: 400 kHz typical
ICH50/75 48 V models: 300 kHz typical
ICH50W/75W: 300 kHz typical
ICH100/ICH150: 500 kHz typical
ICH100W: 250 kHz typical
IFH200: 350 kHz typical
Power Density • ICH50: 18.3 W/in3
ICH75: 27.4 W/in3
ICH100: 36.6 W/in3
ICH150: 54.8 W/in3
IFH200: 34.8 W/in3
MTBF • ≥790 kHrs to MIL-HDBK-217F
at 25 °C, GB
Environmental
Operating Case • -40 °C to +100 °C, see derating curve
Temperature
Storage Temperature • ICH50/75: -55 °C to +105 °C
ICH100/150 & IFH200: -40 °C to +105 °C
Shock • 30 g pk, half sine wave for 18 ms, 3 pulses
per face, all 6 faces tested on all 3 axes
Vibration • 5-500 Hz at 3 g, 10 mins per axis
EMC & Safety
Emissions • EN55032, level A conducted with external
components
ESD Immunity • EN61000-4-2, level 2 Perf Criteria A
EFT/Burst • EN61000-4-4, level 1, Perf Criteria A
Surge • EN61000-4-5, installation class 1,
Perf Criteria A
Conducted Immunity • EN61000-4-6, 3 V rms Perf Criteria A
Magnetic Field • EN61000-4-8, 1 A/m, Perf Criteria A
Safety Approvals • UL60950-1
DC-DC
ICH/IFH Series
Models and Ratings
Input Voltage Output Voltage Output Current Input Current(4)
Efficiency Model Number(2)
No Load Full Load
9-36 VDC
(24 V nominal)
3.3 V 15.00 A 50 mA 2611 mA 79% ICH7524WS3V3
5.0 V 15.00 A 50 mA 3811 mA 82% ICH7524WS05
12.0 V 6.25 A 50 mA 3765 mA 83% ICH7524WS12
15.0 V 5.00 A 50 mA 3720 mA 84% ICH7524WS15
24.0 V 3.12 A 50 mA 3720 mA 84% ICH7524WS24
18-75 VDC
(24 V nominal)
3.3 V 15.00 A 50 mA 1289 mA 80% ICH7548WS3V3
5.0 V 15.00 A 50 mA 1883 mA 83% ICH7548WS05
12.0 V 6.25 A 50 mA 1860 mA 84% ICH7548WS12
15.0 V 5.00 A 50 mA 1838 mA 85% ICH7548WS15
24.0 V 3.12 A 50 mA 1835 mA 85% ICH7548WS24
48.0 V 1.56 A 50 mA 1860 mA 84% ICH7548WS48
Input Voltage Output Voltage Output Current Input Current(4)
Efficiency Model Number(2,5)
No Load Full Load
9-18 VDC
(12 V nominal)
3.3 V 10.00 A 50 mA 3525 mA 78% ICH5012S3V3
5.0 V 10.00 A 50 mA 5145 mA 81% ICH5012S05
12.0 V 4.16 A 50 mA 4950 mA 84% ICH5012S12
15.0 V 3.33 A 50 mA 4950 mA 84% ICH5012S15
24.0 V 2.08 A 50 mA 4950 mA 84% ICH5012S24
18-36 VDC
(24 V nominal)
3.3 V 10.00 A 50 mA 1740 mA 79% ICH5024S3V3
5.0 V 10.00 A 50 mA 2540 mA 82% ICH5024S05
12.0 V 4.16 A 50 mA 2450 mA 85% ICH5024S12
15.0 V 3.33 A 50 mA 2450 mA 85% ICH5024S15
24.0 V 2.08 A 50 mA 2419 mA 86% ICH5024S24
36-75 VDC
(48 V nominal)
3.3 V 10.00 A 50 mA 870 mA 79% ICH5048S3V3
5.0 V 10.00 A 50 mA 1250 mA 83% ICH5048S05
12.0 V 4.16 A 50 mA 1220 mA 85% ICH5048S12
15.0 V 3.33 A 50 mA 1220 mA 85% ICH5048S15
24.0 V 2.08 A 50 mA 1209 mA 86% ICH5048S24
Input Voltage Output Voltage Output Current Input Current(4)
Efficiency Model Number(2,5)
No Load Full Load
9-18 VDC
(12 V nominal)
3.3 V 15.00 A 50 mA 5290 mA 78% ICH7512S3V3
5.0 V 15.00 A 50 mA 7715 mA 81% ICH7512S05
12.0 V 6.25 A 50 mA 7440 mA 84% ICH7512S12
15.0 V 5.00 A 50 mA 7440 mA 84% ICH7512S15
24.0 V 3.13 A 50 mA 7440 mA 84% ICH7512S24
18-36 VDC
(24 V nominal)
3.3 V 15.00 A 50 mA 2610 mA 79% ICH7524S3V3
5.0 V 15.00 A 50 mA 3810 mA 82% ICH7524S05
12.0 V 6.25 A 50 mA 3675 mA 85% ICH7524S12
15.0 V 5.00 A 50 mA 3675 mA 85% ICH7524S15
24.0 V 3.13 A 50 mA 3640 mA 86% ICH7524S24
36-75 VDC
(48 V nominal)
3.3 V 15.00 A 50 mA 1305 mA 79% ICH7548S3V3
5.0 V 15.00 A 50 mA 1883 mA 83% ICH7548S05
12.0 V 6.25 A 50 mA 1838 mA 85% ICH7548S12
15.0 V 5.00 A 50 mA 1838 mA 85% ICH7548S15
24.0 V 3.13 A 50 mA 1820 mA 86% ICH7548S24
Input Voltage Output Voltage Output Current Input Current(4)
Efficiency Model Number(2)
No Load Full Load
9-36 VDC
(24 V nominal)
3.3 V 10.00 A 50 mA 1785 mA 77% ICH5024WS3V3
5.0 V 10.00 A 50 mA 2570 mA 81% ICH5024WS05
12.0 V 4.16 A 50 mA 2510 mA 83% ICH5024WS12
15.0 V 3.33 A 50 mA 2510 mA 83% ICH5024WS15
24.0 V 2.08 A 50 mA 2510 mA 83% ICH5024WS24
18-75 VDC
(48 V nominal)
3.3 V 10.00 A 50 mA 880 mA 78% ICH5048WS3V3
5.0 V 10.00 A 50 mA 1270 mA 82% ICH5048WS05
12.0 V 4.16 A 50 mA 1240 mA 84% ICH5048WS12
15.0 V 3.33 A 50 mA 1240 mA 84% ICH5048WS15
24.0 V 2.08 A 50 mA 1240 mA 84% ICH5048WS24
48.0 V 1.04 A 50 mA 1238 mA 84% ICH5048WS48
Models & Ratings
DC-DC
Notes
Notes
1. Logic compatibility: Module On = Open circuit (or >3.5 VDC for ICH100 W models). Module Off = <0.8 VDC (<1.8 VDC for ICH100 W models).
2. Add suffix ‘N’ to the model number to receive the unit with negative logic Remote On/Off.
3. Ripple & noise is measured with a 10 µF tantalum capacitor and 0.1 µF ceramic capacitor across output.
4. Input current specified at 24 V for 18-36 & 9-36 VDC and 48 V for 36-75 & 18-75 VDC models.
5. For dual output models available, contact sales.
BOTTOM VIEW
(106.7)
4.20
4.60
(116.8)
0.70
2.00
1
0.30
(17.8)
(50.8)
(7.6)
0.30
(7.6)
3
2
4
M3*0.5 Through 4pl. 0.28
2.40
SIDE VIEW
(13.2)
0.52
9
6
7
8
5
(61.0)
(7.2)
ø0.04
(1.02)
Pins 1-4, 6-8
ø0.08
(2.03)
Pins 5 & 9
ICH/IFH Series
BOTTOM VIEW
(48.3)
1.90
2.28
(57.9)
1.40
2.00
1
0.60
(35.6)
(50.8)
(15.2)
3
2
4
M3*0.5 Through 4pl.
Mounting Inserts 0.18 min.
2.40
SIDE VIEW
(12.7)
0.50
9
6
7
8
5
(61.0)
(4.6)
ø0.04
(1.02)
ø0.08
(2.03)
ICH50 to ICH150 IFH200 PIN CONNECTIONS
Pin Function
1 +Vin
2 On/Off
3 Case*
4 -Vin
5 -Vout
6 -Sense
7 Trim
8 +Sense
9 +Vout
* IFH200: N.C.
Input Voltage Output Voltage Output Current Input Current(4)
Efficiency Model Number(2)
No Load Full Load
18-36 VDC
(24 V nominal)
3.3 V 20.00 A 50 mA 3480 mA 79% ICH10024S3V3
5.0 V 20.00 A 50 mA 5020 mA 83% ICH10024S05
12.0 V 8.30 A 50 mA 4880 mA 85% ICH10024S12
15.0 V 6.70 A 50 mA 4925 mA 85% ICH10024S15
24.0 V 4.17 A 50 mA 4905 mA 85% ICH10024S24
36-75 VDC
(48 V nominal)
3.3 V 20.00 A 50 mA 1720 mA 80% ICH10048S3V3
5.0 V 20.00 A 50 mA 2480 mA 84% ICH10048S05
12.0 V 8.30 A 50 mA 2442 mA 85% ICH10048S12
15.0 V 6.70 A 50 mA 2463 mA 85% ICH10048S15
24.0 V 4.17 A 50 mA 2463 mA 85% ICH10048S24
Input Voltage Output Voltage Output Current Input Current(4)
Efficiency Model Number(2)
No Load Full Load
9-36 VDC
(24 V nominal)
3.3 V 20.00 A 35 mA 3374 mA 81% ICH10024WS3V3
5.0 V 20.00 A 35 mA 4990 mA 83% ICH10024WS05
12.0 V 8.30 A 35 mA 4902 mA 85% ICH10024WS12
15.0 V 6.70 A 35 mA 4817 mA 86% ICH10024WS15
24.0 V 4.17 A 35 mA 4849 mA 86% ICH10024WS24
18-75 VDC
(48 V nominal)
3.3 V 20.00 A 30 mA 1708 mA 80% ICH10048WS3V3
5.0 V 20.00 A 30 mA 2422 mA 86% ICH10048WS05
12.0 V 8.30 A 30 mA 2408 mA 86% ICH10048WS12
15.0 V 6.70 A 30 mA 2381 mA 87% ICH10048WS15
24.0 V 4.17 A 30 mA 2367 mA 88% ICH10048WS24
Input Voltage Output Voltage Output Current Input Current(4)
Efficiency Model Number(2)
No Load Full Load
36-75 VDC
(48 V nominal)
3.3 V 30.00 A 25 mA 2.60 A 79% ICH15048S3V3
5.0 V 30.00 A 25 mA 3.70 A 83% ICH15048S05
12.0 V 12.50 A 25 mA 3.60 A 85% ICH15048S12
15.0 V 10.00 A 25 mA 3.60 A 85% ICH15048S15
24.0 V 6.25 A 25 mA 3.60 A 85% ICH15048S24
Input Voltage Output Voltage Output Current Input Current(4)
Efficiency Model Number(2)
No Load Full Load
36-75 VDC
(48 V nominal)
3.3 V 40.00 A 25 mA 3.5 A 79% IFH20048S3V3
5.0 V 40.00 A 25 mA 5.0 A 83% IFH20048S05
12.0 V 17.00 A 25 mA 5.0 A 85% IFH20048S12
15.0 V 13.30 A 25 mA 5.0 A 85% IFH20048S15
24.0 V 8.33 A 25 mA 5.0 A 85% IFH20048S24
28.0 V 7.14 A 25 mA 4.7 A 89% IFH20048S28
48.0 V 4.20 A 25 mA 4.7 A 90% IFH20048S48
Mechanical Details
1. All dimensions are in inches (mm)
2. Weight: ICH50: 0.194 lbs (88 g)
ICH50W: 0.207 lbs (94 g)
ICH75: 0.202 lbs (92 g)
ICH75W: 0.207 lbs (94 g)
ICH100 : 0.209 lbs (95 g)
ICH150 : 0.220 lbs (100 g)
IFH200: 0.425 lbs (193 g)
3. Case tolerance: ±0.02 (±0.50)
4. Pin diameter tolerance: ICH series ±0.002 (±0.05), ±0.004 (±0.1),
IFH series ±0.006 (±0.15)
5. Case Material: ICH50/75/100/150 - Aluminium
IFH200 - Aluminium baseplate with plastic case
6. Pin pitch tolerance: ±0.01 (±0.25)
24 Oct 17
DC-DC
Derating Curves ICH/IFH Series
010 20 30 40 50 60 70 80 90 100
0
5
10
15
20
25
30
35
40
45
Ambient Temperature (˚C)
Power Dissipated Pd (W)
Natural Convection
20ft./min. (0.1 m/s)
100 ft./min. (0.5 m/s)
200 ft./min. (1.0 m/s)
300 ft./min. (1.5 m/s)
400 ft./min. (2.0 m/s)
500 ft./min. (2.5 m/s)
600 ft./min. (3.0 m/s)
700 ft./min. (3.5 m/s)
800 ft./min. (4.0 m/s)
010 20 30 40 50 60 70 80 90 100
0
5
10
15
20
25
30
35
40
45
Ambient Temperature (C)
Power Dissipated Pd (W)
Natural Convection
20ft./min. (0.1 m/s)
100 ft./min. (0.5 m/s)
200 ft./min. (1.0 m/s)
300 ft./min. (1.5 m/s)
400 ft./min. (2.0 m/s)
500 ft./min. (2.5 m/s)
600 ft./min. (3.0 m/s)
700 ft./min. (3.5 m/s)
800 ft./min. (4.0 m/s)
THERMAL RESISTANCE vs AIR FLOW
Air Flow Rate ICH Typical Rca IFH Typical Rca
Natural Convection 20 ft./min (0.1 m/s) 7.12 ˚C/W 3.82 ˚C/W
100 ft./min (0.5 m/s) 6.21 ˚C/W 3.23 ˚C/W
200 ft./min (1.0 m/s) 5.17 ˚C/W 2.71 ˚C/W
300 ft./min (1.5 m/s) 4.29 ˚C/W 2.28 ˚C/W
400 ft./min (2.0 m/s) 3.64 ˚C/W 1.92 ˚C/W
500 ft./min (2.5 m/s) 2.96 ˚C/W 1.68 ˚C/W
600 ft./min (3.0 m/s) 2.53 ˚C/W 1.50 ˚C/W
700 ft./min (3.5 m/s) 2.37 ˚C/W 1.35 ˚C/W
800 ft./min (4.0 m/s) 2.19 ˚C/W 1.23 ˚C/W
Temperature Rise = Pd x Rca, Where Pd = Pin - Pout or Pout (1-η) / η, Where η= efficiency
Output may be trimmed by ±10% (±5% for dual output models) with a fixed
resistor or an external trimpot as shown.
Contact sales for details.
+SENSE
-SENSE
TRIM DOWN
TRIM UP
TRIM
+SENSE
TRIM
-SENSE
10K ohms
TRIMPOT
+Vo
-Vo
0.1 µF
Ceramic
10 µF
Solid tantalum
To
Oscilloscope
Resistive
Load
Output noise is measured with a 10 µF tantalum capacitor
and 0.1 µF ceramic capacitor across output.
Oscilloscope limited to 20 MHz bandwidth
Application Notes
External Output Trimming
Maximum Power Dissipation vs Ambient Temperature and Air Flow (without Heatsink)
ICH50-150S IFH200S
Output Noise
LOGIC TABLE
Logic State (Pin 2) Positive Logic Negative Logic (-N)
Logic Low Switch Closed Module Off Module On
Logic High Switch Open Module On Module Off
