S
E
R
I
E
S
Specifications
INPUT SPECIFICATIONS:
Input Voltage Range........................................................ 12V............9-18V
24V............18-36V
48V............ 36-75V
Undervoltage lockout .............................. 12Vin power up ...............8.8V
power down .................8V
24Vin power up ............... 17V
power down ............. 16V
48Vin power up ............... 34V
power down ............. 32.5V
Positive Logic Remote ON/OFF ( see note 3 & 4 )
Input Filter ......................................................................................... PI Type
37.5 TO 75 WATT WIDE INPUT
DC-DC CONVERTERS
SINGLE OUTPUT
OUTPUT SPECIFICATIONS:
Voltage Accuracy : ..................................................................... ±1% max.
Transient Response :25% Step Load Change ..........................<500µ sec.
External Trim Adj. Range ......................................................................±10%
Ripple & Noise, 20MHz BW, 2.5V & 3.3V & 5V .............. 20mV RMS., max.
75mV pk-pk, max.
12V & 15V .......................... 30mV RMS., max.
100mV pk-pk, max.
24V .......................... 100mV RMS., max.
240mV pk-pk, max.
Temperature Coefficient............................................................ ±0.03%/˚C
Short Circuit Protection..............................................................Continuous
Line Regulation
1
..........................................................................±0.2% max.
Load Regulation
2
.......................................................................±0.2% max.
Over Voltage Protect trip Range, % Vo nom.............................115-140%
Current Limit .................................................110% ~150% Nominal Output
NOTE:
1. Measured From High Line to Low Line.
2. Measured From Full Load to Zero Load.
3. Logic Compatibility ............... Open Collector ref to -Input
Module ON ............. Open Circuit
Module OFF ............... < 0.8Vdc
4. Suffix "N" to the Model Number with Negative Logic Remote
ON/OFF.
Only for Nominal Input Voltage 24 & 48 VDC
Features
•
•
•
•
37.5W-75W Isolated Output
Efficiency to 85%
300KHz Switching Frequency
2 : 1 Input Range
•
•
•
•
Regulated Outputs
Continuous Short Circuit Protection
Five-Sided Metal Case
Industry Standard Half-Brick Package
CASE HB
MODEL
NUMBER
CHB75-12S25
CHB75-12S33
CHB75-12S05
9-18 VDC
CHB75-12S12
CHB75-12S15
CHB75-12S24
CHB75-24S25
CHB75-24S33
CHB75-24S05
18-36 VDC
CHB75-24S12
CHB75-24S15
CHB75-24S24
CHB75-48S25
CHB75-48S33
CHB75-48S05
36-75 VDC
CHB75-48S12
CHB75-48S15
CHB75-48S24
12 VDC
15 VDC
24 VDC
6.25A
5A
3.13A
12 VDC
15 VDC
24 VDC
2.5 VDC
3.3 VDC
5 VDC
6.25A
5A
3.13A
15A
15A
15A
50 mA
12 VDC
15 VDC
24 VDC
2.5 VDC
3.3 VDC
5 VDC
6.25A
5A
3.13A
15A
15A
15A
50 mA
3675 mA
3675 mA
3640 mA
1015 mA
1305 mA
1883 mA
1838 mA
1838 mA
1820 mA
85
85
86
77
79
83
85
85
86
HB
HIGH SIGNAL HERE
DISABLE OUTPUT
-VIN (4)
INPUT
VOLTAGE
OUTPUT
VOLTAGE
2.5 VDC
3.3 VDC
5 VDC
OUTPUT
CURRENT
15A
15A
15A
INPUT CURRENT
NO LOAD
FULL LOAD
4110 mA
5290 mA
7715 mA
50 mA
7440 mA
7440 mA
7440 mA
2029 mA
2610 mA
3810 mA
%EFF
CASE
All Dimensions In Inches(mm)
Tolerances
Inches
Millimeters
.XX±.02
.X±.5
.XXX±.010
.XX±.25
Pin
±0.02
±0.5
76
78
81
HB
84
84
84
77
Mounting Inserts
M3*0.5 Through 4pl.
BOTTOM VIEW
0.18 min.
(4.60)
2*R1.50
PIN CONNECTION
Pin
1.
2.
3.
4.
5.
6.
7.
8.
9.
Function
+Vin
ON/OFF
CASE
-Vin
-Vout
-Sense
Trim
+Sense
+Vout
4
1.40
(35.56)
2.00
(50.8)
3
0.60
(15.24)
2
1
5
6
7
8
9
2.40
(61.00)
Ø0.08
(2.03)
2pl.
79
82
HB
1.90
(48.25)
2.28
(57.90)
Ø0.04
(1.02)
7pl.
0.50
(12.70)
SIDE VIEW
+SENSE (8)
External Output Trim
+SENSE (8)
Remote ON/OFF Control
TRIM DOWN
ON/OFF (2)
TRIM (7)
TRIM UP
-SENSE (6)
-SENSE (6)
TRIM (7)
10K ohms
TRIMPOT
73
NOTE : 1. Nominal Input Voltage 12, 24 & 48 VDC
74
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ELECTRONIC COMPONENTS
RSG
■
RSG Electronic Components GmbH Sprendlinger Landstr. 115 D-63069 Offenbach/Germany
Tel. +49 69 984047-0 Fax +49 69 984047-77 info@rsg-electronic.de
www.rsg-electronic.de
Änderungen vorbehalten / subject to change without notice
All Specifications Typical At Nominal Line, Full Load and 25˚C Unless Otherwise Noted.
CHB75
CHB75
GENERAL SPECIFICATIONS:
Efficiency....................................................................................See Table
Isolation Voltage ...........................Input/Output............. 1500VDC min.
Input/Case................ 1500VDC min.
Output/Case............. 1500VDC min.
Isolation Resistance ............................................................ 10
7
ohm min.
Switching Frequency .................(12/24)Vin......................... 400KHz ,Typ.
48Vin................................. 300KHz ,Typ.
Operating case Temperature ....................................... -40˚C to 100˚C
Storage Temperature ................................................... -55˚C to +105˚C
Thermal Shutdown, Case Temp. .............................................100˚C Typ.
Dimensions ............................................................2.28x2.40x0.50 inches
(57.9x61.0x12.7 mm)
Case Material ......................................................................... Aluminum
Application Note
Derating
The operating case temperature range of the CHB75 series is -40˚C to +100˚C. When operating the CHB75 , proper derating
or cooling is needed .
Following is the derating curve of CHB75 without heat sink
Remote ON/OFF Control
The CHB75 series allows the user to switch the module on and off electronically with remote on/off feature. The CHB75 series
are available with "positive logic" or "negative logic" (option).
Logic Table
ON/OFF (2)
Logic State
(PIN 2)
Negative Logic
Positive Logic
Power Dissipated vs Ambient Temperature and Air Flow
25
Power Disspated, Pd (Watts)
Natural Convection
20 ft./min. (0.1 m/s)
100 ft./min. (0.5 m/s)
HIGH SIGNAL HERE
DISABLE OUTPUT
-VIN (4)
Logic Low -
Switch Closed
Logic High -
Switch Open
Module on
Module off
20
Module off
Module on
15
200 ft./min. (1.0 m/s)
10
300 ft./min. (1.5 m/s)
5
External Output Trimming
Output may optionally be externally trimmed
400 ft./min. (2.0 m/s)
0
0
10
20
30
40
50
60
70
80
90
100
(±10%) with a fixed resistor or an external trim-
pot as shown.
+SENSE (8)
TRIM DOWN
+SENSE (8)
Ambient Temperature, Ta(Deg. C)
TRIM (7)
TRIM (7)
10K ohms
TRIMPOT
Forced Convection Power Derating with No Heat Sink
TRIM UP
-SENSE (6)
-SENSE (6)
Where:
The power dissipation (Pd):
Pd = Pi - Po = Po (1-
)/
The thermal resistance are list below:
Output Noise
The output noise is measured with 10µF tantalum capacitor and 1.0µF ceramic capacitor across output.
TYPICAL Rca
7.12
˚C
/W
6.21
˚C
/W
5.17
˚C
/W
4.29
˚C
/W
3.64
˚C
/W
Resistor
Load
Ceramic
1.0µF
+Vout (9)
Chart of Thermal Resistance vs Air Flow:
AIR FLOW RATE
Natural Convection
100 ft./min.
200 ft./min.
300 ft./min.
400 ft./min.
The temperature rise (
T ):
T = Pd * Rca
-Vout (5)
Solid tantalum
10µF
To
Scope
Output Noise Test Circuit schematic
75
All Specifications Typical At Nominal Line, Full Load and 25˚C Unless Otherwise Noted.
76
CHB75
75 WATT WIDE INPUT DC-DC
CONVERTERS DUAL OUTPUT
q
q
q
q
q
q
q
q
75W Isolated Output
Efficiency to 84%
400KHz Switching Frequency
2 : 1 Input Range
Regulated Outputs
Continuous Short Circuit Protection
Industrial Standard Half-Brick Package
Total power 75W with 15A Maximum Per
Channel
V
Out
5.0
2.5
5.0
3.3
VDC
VDC
VDC
VDC
I
Out Min
1
0
1
0
I
Out Max
A 15000.0 mA
A
A 15000.0 mA
A
I
No Load
30.0 mA
30.0 mA
I
Full Load
1.86 A
1.86 A
Eff Case
84% HB
84%
HB
V
In
Model Num
CHB75-48D05- 36-75 VDC
2V5
CHB75-48D05- 36-75 VDC
3V3
Note:
1. Nominal Input Voltage : 48 VDC
2. Measured with 15A load on VO1
SPECIFICATIONS
Input Specifications
Input Voltage Range
Under voltage lockout
Positive Logic Remote ON/OFF ( see note 3 & 4 )
Input Filter
Output Specifications
Voltage Accuracy
Transient Response:25% Step Load Change
External Trim Adj. Range
Ripple & Noise, 20MHz BW
2.5V & 3.3V & 5V
Temperature Coefficient
Short Circuit Protection
Line Regulation
1
, Single/Dual
Load Regulation
2
, Single/Dual
Over Voltage Protection trip Range ,% Vo nom
Current Limit
3
General Specifications
Efficiency
Isolation Voltage Input/Output
Input/Case
Output/Case
Isolation Resistance
Switching Frequency
Operating Case Temperature
Storage Tempterature
Thermal Shutdown, Case Temp
Dimensions
See Table
1500VDC min.
1500VDC min.
1500VDC min.
10
7
ohms min.
400KHz ,Typ.
-40
o
C to +100
o
C
-55
o
C to +105
o
C
100
o
C Typ
2.28X2.40X0.50 inches
(57.9X61.0X12.7mm)
+/-2.0% max.
<500us
+/- 5.0%
40mV RMS, max.
100mV pk-pk, max.
+/- 0.03%/
o
C
Continuous
+/-0.2% max.
+/-0.5% max.
115-140%
110% ~140% Nominal Output
48V----------36-75V
48Vin power up----------34V
48Vin power down----------32.5V
PI Type
Case Material
Notes
1.
2.
3.
4.
Aluminum baseplate with plastic
case
5.
6.
Measured From High Line to Low
Line
Measured From Full Load to Min.
Load
Measured with Output Current on
Output1 (VO1)
Logic Compatibility ---------- Open
Collector ref to -Input
Module ON ---------- Open Circuit
Module OFF --------- < 0.8Vdc
Suffix "N" to the Model Number
with Negative Logic Remote
ON/OFF
The output noise is measured with
10uf tantalum and
1uf ceramic capacitor across
output.
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