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参数资料
| 型号： | LTC3634EFE#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 5.5 A DUAL SWITCHING CONTROLLER, 4600 kHz SWITCHING FREQ-MAX, PDSO28 |
| 封装： | 4.40 MM, LEAD FREE, PLASTIC, TSSOP-28 |
| 文件页数： | 13/28页 |
| 文件大小： | 359K |
| 代理商： | LTC3634EFE#PBF |
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LTC3634
20
3634f
applicaTions inForMaTion
2-Phase, Single VTT Output Configuration
The two regulators on the LTC3634 can be easily com-
bined to provide a single 2-phase VTT termination supply
capable of sourcing and sinking up to 6A. The circuit is
shown in Figure 7.
In this circuit, VFB1 is tied to INTVCC to put the LTC3634
into2-phaseoperation.Whensetupfor2-phaseoperation,
the inputs to channel 1’s transconductance error amplifier
are switched to be the same as channel 2’s inputs (VFB2
and VTTR), allowing it to be paralleled with channel 2’s
error amplifier. The ITH1 and ITH2 pins should be tied
together externally to force equal current sharing between
both channels.
Only one compensation network is needed on the ITH
node, although separate filter caps for each ITH pin may
be helpful depending on the board layout. In this parallel
configuration, it is important to note that the effective
gm(EA) and gm(MOD) are twice as large as that of a single
channel.
One advantage to this 2-phase configuration is that both
input and output current ripple is significantly reduced
comparedtoasinglephase6Aconvertersolution,because
thecurrentwaveformsfromeachregulatorareinterleaved.
Refer to Application Note 77 for a full discussion and
analysis on PolyPhase converters.
VIN1 and VIN2 may be powered from separate supply volt-
ages (see Figure 12). This is useful in cases where power
needs to be shared between two different sources. It is
important to note that when the VTT output sinks current,
it will backfeed through the converter and out of the VIN
pins. Care must be taken to ensure that the input supplies
are able to handle this condition.
Figure 7. Application Circuit for a 2-Phase, ±6A Single VTT Output
RUN1
RUN2
RT
INTVCC
PHMODE
VFB1
VDDQIN
ITH1
ITH2
LTC3634
3634 F07
L1
0.47H
0.1F
PGND
SGND
BOOST1
SW1
BOOST2
SW2
VFB2
VON2
VON1
VTTR
MODE/SYNC
VIN1
VIN
3.6V TO 15V
VIN2
L2
0.47H
R1
160k
COUT2
100F
×4
VTT
VDDQ/2 AT ±6A
VREF
VDDQ/2 AT ±10mA
10pF
6k
VDDQ
SUPPLY
1000pF
C2
2.2F
C1
47F
×2
10pF
0.01F
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相关代理商/技术参数 |
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| LTC3634EUFD#PBF | 功能描述:IC CONV DDR DDR2 DDR3 28QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-QFN（7x7） 包装:管件 |
| LTC3634EUFD#TRPBF | 功能描述:IC CONV DDR DDR2 DDR3 28QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-QFN（7x7） 包装:管件 |
| LTC3634HFE#PBF | 制造商:Linear Technology 功能描述:IC CONV DDR DDR2 DDR3 28TSSOP 制造商:Linear Technology 功能描述:BUCK 15V 3A 500KHZ-4MHZ TS 制造商:Linear Technology 功能描述:DP-SWREG/Monolithic, 15V Dual 3A Monolithic Step Down Regulator for DDR Power 制造商:Linear Technology 功能描述:DC-DC REGULATOR, BUCK, ADJ, TSSOP-28, Primary Input Voltage:15V, No. of Outputs:2, Output Current:3A, No. of Pins:28, Operating Temperature Min:-40C, Operating Temperature Max:150C, MSL:MSL 1 - Unlimited, Package / Case:28-TSSOP , RoHS Compliant: Yes |
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| LTC3634HUFD#PBF | 制造商:Linear Technology 功能描述:IC CONV DDR DDR2 DDR3 28-QFN 制造商:Linear Technology 功能描述:BUCK 15V 3A 500KHZ-4MHZ QF 制造商:Linear Technology 功能描述:DC-DC REGULATOR, BUCK, ADJ, QFN-28, Primary Input Voltage:15V, No. of Outputs:2, Output Current:3A, No. of Pins:28, Operating Temperature Min:-40C, Operating Temperature Max:150C, MSL:MSL 1 - Unlimited, Package / Case:28-QFN , RoHS Compliant: Yes |
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