L6615 High/low side load share controller
This controller IC is specifically designed to achieve load sharing of paralleled and independent power supply modules in distributed power systems, by adding only few external components. Current sharing is achieved through a single wire connection (share bus) common to all of the paralleled modules. Load sharing is a technique used in all the systems in which the load requires low voltage, high current and/or redundancy; for this reason a modular power system is necessary in which two or more power supplies or DC-DC converters are paralleled.
The device is able to perform both high side and low side current sensing, that is the sense current resistor can be placed either in series to the power supplies output or on the ground return.
The L6615 then drives the share bus to a voltage proportional to the output current of the master that is to the highest amongst the output currents delivered by the paralleled power supplies.
The share bus dynamics is independent of the power supply output voltage and is clamped only by the device supply voltage (VCC).
The output voltage of the other paralleled power supplies (slaves) is then trimmed by the ADJ pin so that they can support their amount of load current. The slave power supplies work as current-controlled current sources.
Sharing the output currents is useful for equalizing also the thermal stress of the different modules and providing an advantage in term of reliability.
Moreover the paralleled supplies architecture allows achieving redundancy; the failure of one of the modules can be tolerated until the capability of the remaining power supplies is enough to provide the required load current
技术特性
- SSI SPECS COMPLIANT
- HIGH/LOW SIDE CURRENT SENSING
- FULLY COMPATIBLE WITH REMOTE OUTPUT VOLTAGE SENSING
- FULL DIFFERENTIAL LOW OFFSET CURRENT SENSE
- 2.7V TO 22V VCC OPERATING RANGE
- 32k Ω SHARE SENSE AMPLIFIER INPUT IMPEDANCE
- HYSTERETIC UVLO
- DISTRIBUTED POWER SYSTEMS
- HIGH DENSITY DC-DC CONVERTERS
- (N+1) REDUNDANT SYSTEMS, N UP TO 20
- SMPS FOR (WEB) SERVERS
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功能框图
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L6615 订购信息
| 订购型号 |
产品状态 |
美金价格 |
数量 |
封装 |
包装形式 |
温度范围 |
材料声明 |
| L6615DTR |
NRND |
|
1000 |
SO-8 |
Tape And Reel |
|
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| L6615N |
NRND |
|
1000 |
DIP-8 |
Tube |
|
|
| L6615D |
NRND |
|
1000 |
SO-8 |
Tube |
|
|
DATASHEET
| 描述 |
版本 |
大小 |
| L6615 : High/low side load share controller |
4 |
399KB |
APPLICATION NOTES
| 描述 |
版本 |
大小 |
| AN3105: 48 V - 130 W high efficiency converter with PFC for LED street lighting applications - European version |
1 |
2174KB |
| AN3106: 48 V - 130 W high-efficiency converter with PFC for LED street lighting applications |
1 |
885KB |
USER MANUALS
| 描述 |
版本 |
大小 |
| UM0727: STEVAL-ISA018V1 demonstration board based on resonant half-bridge SMPS for industrial applications |
1 |
1038KB |
PRODUCT PRESENTATIONS
BOARDS AND TOOLS
| 型号 |
描述 |
| EVL185W-LEDTV |
185 W power supply with PFC and standby supply for LED TV using the L6564, L6599A, and VIPER27L |
| EVL130W-STRLIG |
48 V - 130 W high efficiency converter with PFC for LED street lighting applications |
| EVL130W-SL-EU |
48 V - 130 W high efficiency converter with PFC for LED street lighting applications - European version |
| EVL150W-ADP-SR |
12 V - 150 W resonant converter with synchronous rectification using the L6563H, L6599A, and SRK2000 |
FLYERS
| 描述 |
版本 |
大小 |
| FLATX0511 : High-efficiency ATX design using asymmetrical half-bridge topology |
1.0.0 |
1148KB |
