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参数资料
| 型号： | LTM4601AHVEV#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 13/30页 |
| 文件大小： | 0K |
| 描述： | IC DC/DC UMODULE 12A 133-LGA |
| 产品培训模块： | Power Module vs. Discrete DC to DC |
| 软件下载： | LTM4601AHV Spice Model |
| 产品目录绘图： | LTM Series_15x15x2.8 |
| 设计资源： | DC1414B Design Files LTM4601AHVEV#PBF Footprint.bxl |
| 特色产品： | μModule Products |
| 标准包装： | 119 |
| 系列： | µModule® |
| 类型： | 非隔离（POL） |
| 输出数： | 1 |
| 电压 - 输入（最小）： | 4.5V |
| 电压 - 输入（最大）： | 28V |
| Voltage - Output 1： | 0.6 ~ 5 V |
| 电流 - 输出（最大）： | 12A |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 133-LGA |
| 尺寸/尺寸： | 0.59" L x 0.59" W x 0.11" H（15.0mm x 15.0mm x 2.8mm） |
| 包装： | 托盘 |
| 工作温度： | -40°C ~ 85°C |
| 效率： | 95% |
| 产品目录页面： | 2711 (CN2011-ZH PDF) |
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LTM4601AHV
APPLICATIONS INFORMATION
Therefore, the output ripple voltage can be calculated with
the known effective output ripple current. The equation:
Δ V OUT(P-P) ≈ ( Δ I L /(8 ? f ? m ? C OUT ) + ESR ? Δ I L ), where f
is frequency and m is the number of parallel phases. This
calculation process can be easily accomplished by using
LTpowerCAD?.
Fault Conditions: Current Limit and Overcurrent
Foldback
LTM4601AHV has a current mode controller, which inher-
ently limits the cycle-by-cycle inductor current not only in
steady-state operation, but also in response to transients.
Output Voltage Tracking
Output voltage tracking can be programmed externally
using the TRACK/SS pin. The output can be tracked up and
down with another regulator. The master regulator’s output
is divided down with an external resistor divider that is the
same as the slave regulator’s feedback divider. Figure 5
shows an example of coincident tracking. Ratiometric
modes of tracking can be achieved by selecting different
resistor values to change the output tracking ratio. The
master output must be greater than the slave output for
the tracking to work. Figure 6 shows the coincident output
tracking characteristics.
TRACK CONTROL
LTM4601AHV
R SET
To further limit current in the event of an overload condi-
tion, the LTM4601AHV provides foldback current limit-
ing. If the output voltage falls by more than 50%, then
the maximum output current is progressively lowered to
about one sixth of its full current limit value. The current
limit returns to its nominal value once V OUT and V FB have
returned to their nominal values.
Soft-Start and Tracking
The TRACK/SS pin provides a means to either soft-start
the regulator or track it to a different power supply. A
capacitor on this pin will program the ramp rate of the
output voltage. A 1.5μA current source will charge up the
external soft-start capacitor to 80% of the 0.6V internal
voltage reference plus or minus any margin delta. This will
control the ramp of the internal reference and the output
voltage. The total soft-start time can be calculated as:
C SS
t SOFTSTART = 0.8 ? ( 0.6V ± V OUT(MARGIN) ) ?
1.5μA
V IN
C IN
100k
MASTER
OUTPUT
R T
60.4k
R B
40.2k
V IN PLLIN TRACK/SS
PGOOD V OUT SLAVE OUTPUT
MPGM V FB C OUT
RUN MARG0
COMP MARG1
INTV CC V OUT_LCL
DRV CC DIFFV OUT
V OSNS+
V OSNS–
SGND PGND f SET
40.2k
4601AHV F05
Figure 5. Coincident Tracking Schematic
MASTER OUTPUT
When the RUN pin falls below 1.5V, then the TRACK/SS
pin is reset to allow for proper soft-start control when the
regulator is enabled again. Current foldback and forced
continuous mode are disabled during the soft-start pro-
cess. The soft-start function can also be used to control
the output ramp up time, so that another regulator can
be easily tracked to it.
OUTPUT
VOLTAGE
TIME
SLAVE OUTPUT
4601AHV F06
Figure 6. Coincident Output Tracking Characteristics
For more information www.linear.com/LTM4601AHV
4601ahvfc
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相关代理商/技术参数 |
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| LTM4601AHVEY#PBF | 功能描述:IC DC/DC UMODULE 12A 133-BGA RoHS:是 类别:电源 - 板载 >> DC DC Converters 系列:µModule® 设计资源:VI-200, VI-J00 Design Guide, Appl Manual 标准包装:1 系列:* 类型:隔离 输出数:1 电压 - 输入（最小）:66V 电压 - 输入（最大）:160V Voltage - Output 1:12V Voltage - Output 2:- Voltage - Output 3:- 电流 - 输出（最大）:* 电源（瓦） - 制造商系列:50W 电压 - 隔离:* 特点:* 安装类型:通孔 封装/外壳:9-FinMod 尺寸/尺寸:4.60" L x 1.86" W x 0.79" H（116.8mm x 47.2mm x 20.1mm） 包装:散装 工作温度:-25°C ~ 85°C 效率:* 电源（瓦特）- 最大:* |
| LTM4601AHVEY#PBF | 制造商:Linear Technology 功能描述:BUCK REGULATOR DC/DC UMODULE 12A BGA- |
| LTM4601AHVIV#PBF | 功能描述:IC DC/DC UMODULE 12A 133-LGA RoHS:是 类别:电源 - 板载 >> DC DC Converters 系列:µModule® 设计资源:VI-200, VI-J00 Design Guide, Appl Manual 标准包装:1 系列:* 类型:隔离 输出数:1 电压 - 输入（最小）:21V 电压 - 输入（最大）:32V Voltage - Output 1:5V Voltage - Output 2:- Voltage - Output 3:- 电流 - 输出（最大）:* 电源（瓦） - 制造商系列:100W 电压 - 隔离:* 特点:* 安装类型:通孔 封装/外壳:9-SlimMod 尺寸/尺寸:4.60" L x 1.80" W x 0.52" H（116.8mm x 45.7mm x 13.2mm） 包装:散装 工作温度:-25°C ~ 85°C 效率:* 电源（瓦特）- 最大:* |
| LTM4601AHVIV#PBF | 制造商:Linear Technology 功能描述:DC/DC Converter IC |
| LTM4601AHVIV-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:12A, 28VIN DC/DC μModule with PLL, Output Tracking and Margining |
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