参数资料
型号: IP1206PBF
厂商: International Rectifier
文件页数: 15/30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: 5
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:
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 36-BFLGA
包装: 管件
供应商设备封装: 36-LGA(9.25x15.5)

i P1206PbF
Fault Protection
The iP1206 monitors the output voltage for over voltage protection and power good indication. It senses
the R ds(on) of low side MOSFET for over current protection. It also protects the output for prebias
conditions. Fig. 15 below shows the IC’s operating waveforms under different fault conditions.
POR
3V
1.8V
1.0V
SS
Set Voltage
90%Vfb
Pre_Bias Voltage
Vo
PGood
OCP Threshold
Iout
t 0
t 1 t 2 t 3
t 4
t 5
t 6
t 7
t 8
t 9
t 10
t 11
Fig. 15: Fault Conditions
t 0 – t 1 : Vcc, VCH and Enable signals passed their respective UVLO threshold. Soft start sequence starts.
t 1 – t 2 : Power Good signal flags high.
t 1 – t 3 : Output voltage ramps up and reaches the set voltage.
t 4 – t 5 : OC event, SS ramps down. IC in Hiccup mode.
t 5 – t 6 : OC is removed, recovery sequence, fresh SS.
t 6 –t 7 : Output voltage reaches the set voltage.
t 8 : OVP event. HDrv turns off and LDrv Turns on. The IC latches off.
t 9 –t 10 : Manually recycled the Vcc after latched OVP.
t 11 : PreBias start up.
www.irf.com
2/26/2008
15
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