CHB50 RSG | Alldatasheet
Document overview
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Technical content
Features
- 25W/50W Isolated Output • Regulated Outputs
- Efficiency to 85% • Continuous Short Circuit Protection
- 300KHz Switching Frequency • Five-Sided Metal Case
- 2 : 1 Input Range • Industry Standard Half-Brick Package MODEL INPUT OUTPUT OUTPUT INPUT CURRENT %EFF CASE NUMBER VOLTAGE VOLTAGE CURRENT NO LOAD FULL LOAD
25 TO 50 WATT WIDE INPUT
-SENSE (6) TRIM UP TRIM (7) TRIM DOWN +SENSE (8) -SENSE (6) +SENSE (8) TRIM (7) 10K ohms TRIMPOT PIN CONNECTION Pin Function +Vin ON/OFF CASE -Vin -Vout -Sense Trim +Sense +Vout INPUT SPECIFICATIONS: Positive Logic Remote ON/OFF ( see note 3 & 4 ) OUTPUT SPECIFICATIONS: 75mV pk-pk, max. 100mV pk-pk, max. 240mV pk-pk, max. Line Regulation GENERAL SPECIFICATIONS: 7 ohm min. NOTE: 1. Measured From High Line to Low Line. 2. Measured From Full Load to Zero Load. 4. Suffix "N" to the Model Number with Negative Logic Remote ON/OFF. HIGH SIGNAL HERE DISABLE OUTPUT ON/OFF (2) -VIN (4) Pin NOTE : 1. Nominal Input Voltage 12, 24 & 48 VDC Remote ON/OFF Control Only for Nominal Input Voltage 24 & 48 VDC RSG ELECTRONIC COMPONENTS RSG Electr onic Components GmbH ■ Spr endlinger Landstr . 115 ■ D-63069 Of fenbach/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. External Output Trimming The CHB50 series allows the user to switch the module on and off electronically with remote on/off feature. The CHB50 series are available with "positive logic" or "negative logic" (option). Application Note Derating The operating case temperature range of the CHB50 series is -40˚C to +100˚C. When operating the CHB50 , proper derating or cooling is needed . Following is the derating curve of CHB50 without heat sink. Where: The power dissipation (Pd): Pd = Pi - Po = Po (1- ) / The thermal resistance are list below: Power Dissipated vs Ambient Temperature and Air Flow Natural Convection 20 ft./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) 0 10 20 30 40 50 60 70 80 90 100 Ambient Temperature, Ta(Deg. C) Power Disspated, Pd (Watts) Forced Convection Power Derating with No Heat Sink Chart of Thermal Resistance vs Air Flow: AIR FLOW RATE TYPICAL Rca Natural Convection 7.12 ˚C/W 100 ft./min. 6.21 ˚C/W 200 ft./min. 5.17 ˚C/W 300 ft./min. 4.29 ˚C/W 400 ft./min. 3.64 ˚C/W The temperature rise ( T ): T = Pd * Rca HIGH SIGNAL HERE DISABLE OUTPUT ON/OFF (2) -VIN (4) Logic Table Negative Logic Positive Logic Logic Low - Switch Closed Logic High - Switch Open Module on Module off Module off Module on +SENSE (8) -SENSE (6)-SENSE (6) +SENSE (8) TRIM (7) TRIM (7) TRIM UP TRIM DOWN 10K ohms TRIMPOT External Output Output may optionally be externally trimmed (±10%) with a fixed resistor or an external trimpot as shown. +Vout (9) -Vout (5) Ceramic 1.0µF Solid Tantalum 10µF To Scope Resistor Load Output Noise Test Circuit schematic The output noise is measured with 10µF tantalum capacitor and 1.0µF ceramic capacitor across output. Logic State (PIN 2)