VHB150W CUI | Alldatasheet
Document overview
- Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 9
Technical content
rev. page date page date DESCRIPTION: half-brick dc-dc converter 1 of 9 PART NUMBER: VHB150W
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
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 18- 75V) 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. MODEL input voltage output output input current efficiency nominal range voltage current 1 no load 2 full load 2 typ. 3 (V dc) (V dc) (V dc) (A) (mA) (mA) (%) VHB150W-Q24-S3R3 24 9.0~36.0 3.3 30 200 4741 85 VHB150W-Q24-S5 24 9.0~36.0 5 30 200 7022 87 VHB150W-Q24-S12 24 9.0~36.0 12 12.5 100 6944 88 VHB150W-Q24-S15 24 9.0~36.0 15 10 100 6944 88 VHB150W-Q24-S24 24 9.0~36.0 24 6.5 100 7022 88 VHB150W-Q48-S3R3 48 18.0~75.0 3.3 30 100 2371 87 VHB150W-Q48-S5 48 18.0~75.0 5 30 100 3511 89 VHB150W-Q48-S12 48 18.0~75.0 12 12.5 50 3472 90 VHB150W-Q48-S15 48 18.0~75.0 15 10 50 3472 90 VHB150W-Q48-S24 48 18.0~75.0 24 6.5 50 3511 89 notes: 1. see output derating (page 4) 2. input currents are measured at nominal input voltage 3. efficiency is measured at nominal line, full load *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-to- date product information before placing orders. V-Infinity assumes no liability or responsibility for customer’s applications u sing 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. INPUT parameter conditions/description min nom max units input voltage range 9 24 36 V dc 18 48 75 V dc under voltage lockout 24 Vin power up 8.8 V dc
24 Vin power down 8 V dc
48 Vin power up 17 V dc
48 Vin power down 16 V dc
remote on/off control 4 section 15 in the application notes input filter PI type notes: 4. add suffix “N” to the model number for negative logic on/off control
DESCRIPTION: half-brick dc-dc converter 2 of 9 PART NUMBER: VHB150W OUTPUT parameter conditions/description min nom max units voltage accuracy ±1.5 % transient response 25% step load change 500 μ sec external trim adj. range ±10 % ripple & noise (20MHz BW) 3.3V, 5V 40 mV RMS 100 mV pk-pk 12V& 15V 60 mV RMS 150 mV pk-pk 24V 100 mV RMS 240 mV pk-pk temperature coefficient ±0.03 %/°C short circuit protection continuous line regulation 5 ±0.2 % load regulation 6 ±1 % over voltage protection trip range, % Vo nom. 115 140 % over current protection % nominal output current 110 140 % GENERAL SPECIFICATIONS parameter conditions/description min nom max units switching frequency 250 KHz operating ambient temp. 7 -40 100 °C storage temperature -55 105 °C thermal shutdown case temp. 90 °C case material aluminum ISOLATION SPECIFICATIONS parameter conditions/description min nom max units isolation voltage input/output 1500 V dc input/case 1500 V dc output/case 1500 V dc isolation resistance 100 M Ω notes: 5. measured from high line to low line at full load 6. measured from full load to zero load at nominal input 7. 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-to- date product information before placing orders. V-Infinity assumes no liability or responsibility for customer’s applications u sing 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.
DESCRIPTION: half-brick dc-dc converter 3 of 9 PART NUMBER: VHB150W Tolerances Inches: X.XX= ±0.02 , X.XXX= ±0.010 Millimeters: X.X= ±0.5 , X.XX= ± 0 . 2 5 BOTTOM VIEW All Dimensions In Inches(mm) Mounting Inserts M3*0.5 Through 4pl. -Sense -Vout -Vin CASE ON/OFF +Vout +Sense Trim +Vin FunctionPin MECHANICAL DRAWING
cooling is needed. The maximum case temperature under any operating condition should not exceed 100°C. FIGURE 1. OUTPUT DERATING (FORCED CONVECTION WITH NO HEAT SINK) minimum airflow= 500 ft./min. The Rca is thermal resistance from case to ambience.The Ta is ambient temperature and the Tc is case temperature.
losses and voltage ripples are accounted for. One possible problem is driving the converter with a linear unregulated power su pply. sure the actual input voltage does not exceed the highest voltage of 36V or75V. for the input pair and the output pair, so as to minimize noise pickup. source current is recommended to be: Ipeak = 150% * 150 / (87% * 9) = 28.74 A . age, as shown in this equation: Ipeak = 150%*Pout/( ηη*Vmin) . for this application. Make sure the fuse voltage rating is higher than the maximum input voltage. FIGURE 2. REMOTE SENSE
- OUTPUT OCP AND SHORT-CIRCUIT PROTECTION
the output voltage may not shut down, but the converter may build up heat over time, causing over-temperature shutdown.
- OVER-TEMPERATURE PROTECTION
perature is reduced enough to a safe operating level, the converter will recover to normal operations automatically. In case the output voltage exceeds the OVP threshold, the converter shuts down.
- OUTPUT PARALLEL CONNECTIONS
one converter as a backup in case of a failure. Make sure the OR-ing diodes can handle the voltage and full load current. FIGURE 6. OUTPUT
- OUTPUT SERIES CONNECTIONS
rent; 3) the diodes do not overheat before the short is removed.
- REMOTE OUTPUT ON/OFF CONTROL
circuit is shown below. The standard version defaults to positive logic. For negative logic, indicate the selection when orderi ng. resulting in the converter non-isolated. FIGURE 8. REMOTE ON/OFF CONTROL FIGURE 9. REMOTE ON/OFF CONTROL
- OUTPUT NOISE MEASUREMENT SCHEMATIC
scope bandwidth to 20MHz. Probe directly off of one of the capacitors, using a small ground clip to minimize measurement error . FIGURE 10. OUTPUT NOISE MEASUREMENT CIRCUIT