VHB150W

rev. page page date date 1 of 9 08/2009 PART NUMBER: VHB150W DESCRIPTION: half-brick dc-dc converter description The VHB150W series of DC-DC converters are designed for high reliability applications, featuring over-temperature protection, and over-current protection. The wide 4:1 input range (9-36V or 1875V) is very useful to stabilize an input source like batteries in various discharging and charging conditions. Additionally, high efficiency, fast response, tight regulations, remote sense and remote On/Off control make these converters very useful in many applications. features ·99-150W isolated output ·Efficiency to 90% ·RoHS Compliant ·4:1 input range ·Regulated output ·Continuous short circuit protection ·remote on/off ·over-voltage/current protection ·over-temperature shutdown ·industry standard ½ brick size M ODEL VHB150W-Q24-S3R3 VHB150W-Q24-S5 VHB150W-Q24-S12 VHB150W-Q24-S15 VHB150W-Q24-S24 VHB150W-Q48-S3R3 VHB150W-Q48-S5 VHB150W-Q48-S12 VHB150W-Q48-S15 VHB150W-Q48-S24 notes: input voltage nominal range (V dc) (V dc) output voltage (V dc) output current 1 (A) input current no load 2 full load 2 (mA) (mA) efficiency typ. 3 (%) 24 24 24 24 24 48 48 48 48 48 9.0~36.0 9.0~36.0 9.0~36.0 9.0~36.0 9.0~36.0 18.0~75.0 18.0~75.0 18.0~75.0 18.0~75.0 18.0~75.0 3.3 5 12 15 24 3.3 5 12 15 24 30 30 12.5 10 6.5 30 30 12.5 10 6.5 200 200 100 100 100 100 100 50 50 50 4741 7022 6944 6944 7022 2371 3511 3472 3472 3511 85 87 88 88 88 87 89 90 90 89 1. see output derating (page 4) 2. input currents are measured at nominal input voltage 3. efficiency is measured at nominal line, full load I NPUT parameter input voltage range under voltage lockout conditions/description min 9 18 nom 24 48 8.8 8 17 16 max 36 75 units V dc V dc V dc V dc V dc V dc remote on/off control 4 input filter notes: 24 Vin power up 24 Vin power down 48 Vin power up 48 Vin power down section 15 in the application notes PI type 4. add suffix “N” to the model number for negative logic on/off control *V-Infinity reserves the right to make changes to its products or to discontinue any product or service without notice, and to advise customers to verify the most up-todate product information before placing orders. V-Infinity assumes no liability or responsibility for customer’s applications using V-Infinity products other than repair or replacing (at V-I’s option) V-Infinity products not meeting V-I’s published specifications. Nothing will be covered outside of standard product warranty. 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fa x 503.612.2383 phone fax www.v-infinity.com page date 2 of 9 08/2009 PART NUMBER: VHB150W DESCRIPTION: half-brick dc-dc converter OUTPUT parameter voltage accuracy transient response external trim adj. range ripple & noise (20MHz BW) conditions/description 25% step load change 3.3V, 5V 12V& 15V 24V temperature coefficient short circuit protection continuous line regulation 5 load regulation 6 over voltage protection trip range, % Vo nom. over current protection % nominal output current ±0.03 ±0.2 ±1 140 140 min nom max ±1.5 500 ±10 40 100 60 150 100 240 units % μ s ec % mV RMS mV pk-pk mV RMS mV pk-pk mV RMS mV pk-pk %/°C % % % % 115 110 GENERAL SPECIFICATIONS parameter switching frequency operating ambient temp. 7 storage temperature thermal shutdown case temp. case material conditions/description min -40 -55 90 aluminum nom 250 max 100 105 units KHz °C °C °C ISOLATION SPECIFICATIONS parameter isolation voltage conditions/description input/output input/case output/case min 1500 1500 1500 100 nom max units V dc V dc V dc MΩ isolation resistance notes: 5. 6. 7. measured from high line to low line at full load measured from full load to zero load at nominal input see output derating curve (page 4) *V-Infinity reserves the right to make changes to its products or to discontinue any product or service without notice, and to advise customers to verify the most up-todate product information before placing orders. V-Infinity assumes no liability or responsibility for customer’s applications using V-Infinity products other than repair or replacing (at V-I’s option) V-Infinity products not meeting V-I’s published specifications. Nothing will be covered outside of standard product warranty. 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fa x 503.612.2383 phone fax www.v-infinity.com PART NUMBER: VHB150W MECHANICAL DRAWING All Dimensions In Inches(mm) Tolerances Inches: X.XX= ±0.02 , X.XXX= ±0.010 Millimeters: X.X= ±0.5 , X.XX= ± 0 . 2 5 Mounting Inserts BOTTOM VIEW M3*0.5 Through 4pl. Pin 1 2 3 4 5 6 7 8 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fa x 503.612.2383 phone fax DESCRIPTION: half-brick dc-dc converter date 9 Function +Vin ON/OFF CASE -Vin -Vout -Sense Trim +Sense +Vout page 3 of 9 08/2009 www.v-infinity.com page date 4 of 9 08/2009 PART NUMBER: VHB150W DESCRIPTION: half-brick dc-dc converter APPLICATION NOTES 1. OUTPUT DE-RATING The operating case temperature range for VHB150W is -40 ~ +100°C. When operating the VHB150W series, proper derating or cooling is needed. The maximum case temperature under any operating condition should not exceed 100°C. Power Dissipated vs Ambient Temperature and Air Flo w Natural Convection 20 ft./min. (0.1 m/s) 100 ft./min. (0.5 m/s) Power Disspated ,Pd(Watts) 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) Ambient Temperature ,Ta(Deg. C) FIGURE 1. OUTPUT DERATING (FORCED CONVECTION WITH NO HEAT SINK) Example: What is the minimum airflow necessary for a VHB150W-Q48-S12 operating at nominal line, an output current of 12.5 A, and a maximum ambient temperature of 50°C? Solution: Given: Vin=48 V dc, Vo=12 V dc, Io=12.5 A Determine Power dissipation (Pd): Pd=Pi-Po=Po(1- η )/ η Pd=12×12.5×(1-0.9)/0.9=16.67 W Determine airflow: Given: Pd=16.67 W and Ta=50°C Check above Power de-rating curve: minimum airflow= 500 ft./min. Verifying: AIR FLOW RATE Natural Convection 20ft./min. (0.1m/s) 100 ft./min. (0.5m/s) 200 ft./min. (1.0m/s) 300 ft./min. (1.5m/s) 400 ft./min. (2.0m/s) 500 ft./min. (2.5m/s) 600 ft./min. (3.0m/s) 700 ft./min. (3.5m/s) 800 ft./min. (4.0m/s) TYPICAL Rca 7.12 6.21 5.17 4.29 3.64 2.96 2.53 2.37 2.19 /W /W /W /W /W /W /W /W /W Chart of Thermal Resistance vs Air Flow The maximum temp. rise Δ T = Pd × Rca=16.67×2.96=49.34°C. The maximum case temperature Tc=Ta+ Δ T=99.34°C