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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 ..........................<500 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 Regulation1 ..........................................................................0.2% max. Load Regulation2 .......................................................................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) O0.08 (2.03) 2pl.
79 82 HB
1.90 (48.25) 2.28 (57.90)
O0.04 (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
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NOTE : 1. Nominal Input Voltage 12, 24 & 48 VDC
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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
Anderungen vorbehalten / subject to change without notice
All Specifications Typical At Nominal Line, Full Load and 25C 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 ............................................................ 107 ohm min. Switching Frequency .................(12/24)Vin......................... 400KHz ,Typ. 48Vin................................. 300KHz ,Typ. Operating case Temperature ....................................... -40C to 100C Storage Temperature ................................................... -55C to +105C Thermal Shutdown, Case Temp. .............................................100C 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 -40C to +100C. 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 trimpot 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 10F tantalum capacitor and 1.0F 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 1.0F +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 10F To Scope
Output Noise Test Circuit schematic
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All Specifications Typical At Nominal Line, Full Load and 25C Unless Otherwise Noted.
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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
VOut 5.0 2.5 5.0 3.3 VDC VDC VDC VDC IOut Min 1 0 1 0 IOut Max A 15000.0 mA A A 15000.0 mA A INo Load 30.0 mA 30.0 mA IFull Load 1.86 A 1.86 A Eff Case 84% HB 84% HB
VIn 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 Regulation1, Single/Dual Load Regulation2, Single/Dual Over Voltage Protection trip Range ,% Vo nom Current Limit3 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. 107 ohms min. 400KHz ,Typ. -40oC to +100oC -55oC to +105oC 100oC 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%/ oC 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.
All specifications typical at nominal line, full load, and 25oC unless otherwise noted.

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