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| 型号： | IP1206TRPBF |
| 厂商： | International Rectifier |
| 文件页数： | 11/30页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 30A/15A LGA |
| 产品变化通告： | (EP) Parts Discontinuation 25/May/2012 |
| 标准包装： | 750 |
| 系列： | iPOWIR™ |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 或 2 |
| 输出电压： | 0.8 V ~ 5.5 V |
| 输入电压： | 7.5 V ~ 14.5 V |
| PWM 型： | 电压模式 |
| 频率 - 开关： | 200kHz ~ 600kHz |
| 电流 - 输出： | 30A，15A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 36-BFLGA |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 36-LGA（9.25x15.5） |
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i P1206PbF
Internal Regulator
iP1206 features an on-board regulator capable of
sourcing current up to 100mA. This integrated
regulator can be used to generate the necessary
bias voltage for drivers. An example of how this
can be used is shown in Fig. 25. The output of
In addition, the 180 o out of phase operation
contributes to input current cancellation. This
results in a much smaller input capacitor - RMS
current thereby reducing the input capacitor
quantity. Fig. 8 shows the equivalent RMS
current.
the regulator is protected for short circuit and
thermal shutdown.
Single Phase
Out-of-Phase Operation
The iP1206 drives its two output stages 180 o out-
of-phase. In current share mode (single output),
the two inductor ripple currents cancel each other
and result in a reduction of the output current
2 Phase
ripple and yield a smaller output capacitor for the
same ripple voltage requirement. Fig. 7 shows
two channels inductor current and the resulting
voltage ripple at output.
Duty Cycle (Vo/Vin)
HDRV1
Fig. 8: Input RMS value vs. Duty Cycle
Mode Selection
0
DT
T
The iP1206 can operate as a dual output
independently regulated buck converter, or as a
HDRV2
2 phase single output buck converter (in current
share mode). The SS2 pin is used for mode
selection. In current share mode this pin should
be floating and in dual output mode a soft start
capacitor must be connected from this pin to
ground to program the start time for the second
Ic
IL1
IL2
Io
output.
Independent Mode
In this mode the iP1206 provides control to two
independent output power supplies with either
common or different input voltages. The output
voltage of each individual channel is set and
controlled by the output of the error amplifier,
which is the amplified error signal from the
sensed output voltage and the reference voltage.
The error amplifier output voltage is compared to
Fig. 7: Current ripple cancellation for output
the ramp signal thus generating fixed frequency
pulses of variable duty-cycle, (PWM) which are
applied to the internal MOSEFT drivers. Fig. 25b
shows a typical schematic for such an
application.
www.irf.com
2/26/2008
11
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相关代理商/技术参数 |
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| IP120A | 制造商:SEME-LAB 制造商全称:Seme LAB 功能描述:1.5 AMP NEGATIVE VOLTAGE REGULATOR |
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