power components for battery applications webinar presentation
TRANSCRIPT
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Power Components for Battery Applications
Presented by: Travis WilliamsSenior Manager, Product Management and Marketing
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Agenda
1. Battery Powered Systems
– Applications and trends
2. Regulating Batteries
– Battery specific challenges
– Universal challenges
3. Choosing a DC-DC Regulator
– What to look for
4. Vicor Solutions and Benefits
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Battery Powered Systems
› Automotive Hybrid Battery Voltages and Technologies
– Start/stop enabled mild/micro hybrids
– 48V rails the future of automotive electronics?
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Battery Powered Automotive Accessories
› Automotive Hybrid Battery Voltages and Technologies
– Increased power demands from additional electronics
› Video surveillance, portable wireless, infotainment, active chassis systems
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Grid Independent Homes and Distributed Generation
› Alternative ‘Green’ Power Generation
– Solar and wind powered homes
– Distributed generation
Source: www.microgrids.et.aau.dk
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Industrial & Portable Equipment Battery Back-Up
› Solar Powered Road Signs
› Portable Medical Equipment
› Industrial Battery Chargers
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Regulating Battery Supplies – Power Out
› Wide Operating Voltage Ranges
– Example: traditional 12V lead acid battery
› Typically applications 8V<= Vbat <= 16.5V
http://www.scubaengineer.com/documents/lead_acid_battery_charging_graphs.pdf
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Charging Batteries – Power In
› Constant-Current / Constant-Voltage Curve
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Battery Specific Challenges
› Load Regulation and Charging
– Switching between Voltage Priority & Current Priority
– Many systems use dedicated battery charging components and DC-DC regulators
› Harsh Environments
– Indoors, outdoors, wide temperature ranges -40C to +125C
› Thermal Management
– High ambient temps, little to no cooling mechanisms
– No room for a heat sink & no active cooling
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Regulating Automotive Batteries – Special Case
› Automotive Alternators Bring an Extra Challenge
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Universal Challenges
Make it Smaller, Lighter, and with More Power!
http://www.edn.com/electronics-blogs/scope-guru-on-signal-integrity/4403881/Automotive-electronics-systems--trends-and-impact-for-test-and-measurement-companies-
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What to Look for in a Solution
› Wide Input/Output Operating Range
– One solution that supports 12V, 24V, 36V, 48V batteries
– Maintain regulation over entire input range
60V48V36V24V12V
12V
24V
36V Li Ion
48V Li Ion
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What to Look for in a Solution
› Support for Both Voltage Priority & Current Priority Operation
– Charging mode = constant-current priority
– Regulation mode = DC-DC Buck-Boost voltage priority
– Dual mode solution to replace a separate DC-DC regulator and battery charger
CC Mode CV ModeDual Mode
DC-DC
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What to Look for in a Solution
› High Efficiency
– Higher efficiency less heat = more power/ PCB area
– Uniform efficiency performance over a wide VIN range
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What to Look for in a Solution
› Small Size, Lightweight, Power Dense & Modular
– High switching frequency smaller power components
– Lightweight solutions
– System-in-Package solution facilitate a modular design approach
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What to Look for in a Solution
› Scalability
– Modular solutions which are easily paralleled
– Automatic current sharing
DC-DC
DC-DC
DC-DCLoad
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Vicor’s Solution and Benefits
› PI374x Family of Buck-Boost Regulators
– PI3740, PI3741, PI3749
› Lower Cost of Ownership
– System-in-package modular design
› Reuse and scalability
– Thermal and power design margin
– Simplified BOM
– Faster design time
– Pre-compensated and optimized
› First pass design success!
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Products and Tools
› Vicor provides AC-DC, High Voltage DC-DC, and DC to PoL Solutions
–Select BCM and VTMs support bi-directional operation
–http://www.vicorpower.com/powerbench
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Thank you
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IEEE PDH Information
› Webinar title: Power Components for Battery Applications
› Code: 2017IEEE04S14
› Link for form: https://fs25.formsite.com/ieeevcep/form112/index.html