- 您现在的位置：买卖IC网 > PDF目录13201 > IR3832WMTR1PBF (International Rectifier)IC REG SYNC BUCK 4A DDR 15-QFN PDF资料下载
参数资料
| 型号： | IR3832WMTR1PBF |
| 厂商： | International Rectifier |
| 文件页数： | 16/32页 |
| 文件大小： | 0K |
| 描述： | IC REG SYNC BUCK 4A DDR 15-QFN |
| 特色产品： | Gen2.1 SupIRBuck? Integrated Voltage Regulators |
| 标准包装： | 1 |
| 系列： | SupIRBuck™ |
| 应用： | 转换器，DDR |
| 输入电压： | 1.5 V ~ 16 V |
| 输出数： | 1 |
| 输出电压： | 0.6 V ~ 14.4 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 15-PowerVQFN |
| 供应商设备封装： | PQFN（5x6） |
| 包装： | 标准包装 |
| 其它名称： | IR3832WMTR1PBFDKR |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页当前第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页
PD-97508
IR3832WMPbF
Minimum on time Considerations
The minimum ON time is the shortest amount of
time for which the Control FET may be reliably
turned on, and this depends on the internal
timing delays. For the IR3832W, the typical
minimum on-time is specified as 50 ns.
Any design or application using the IR3832W
must ensure operation with a pulse width that is
higher than this minimum on-time and preferably
higher than 100 ns. This is necessary for the
circuit to operate without jitter and pulse-
skipping, which can cause high inductor current
ripple and high output voltage ripple.
Maximum Duty Ratio Considerations
A fixed off-time of 200 ns maximum is specified
for the IR3832W. This provides an upper limit on
the operating duty ratio at any given switching
frequency. It is clear, that higher the switching
frequency, the lower is the maximum duty ratio at
which the IR3832W can operate. To allow a
margin of 50ns, the maximum operating duty
ratio in any application using the IR3832W
should still accommodate about 250 ns off-time.
Fig 9. shows a plot of the maximum duty ratio v/s
the switching frequency, with 250 ns off-time.
t on =
=
D
F s
V out
V in × F s
95
90
85
80
75
M a x Duty Cycle
In any application that uses the IR3832W, the
following condition must be satisfied:
t on (min) ≤ t on
70
65
60
55
250
450
650
850
1050
1250
1450
1650
∴ t on (min) ≤
∴ V in × F s ≤
V out
V in × F s
V out
t on (min)
The minimum output voltage for the IR3832W is
limited to V out(min) = 0.6 V.
S w itching Frequency (kH z )
Fig. 9. Maximum duty cycle v/s switching
frequency.
∴ V in × F s ≤
V out (min)
t on (min)
∴ V in × F s ≤
0.6 V
100 ns
= 6 × 10 6 V/s
Furthermore, for the IR3832W, especially for
active bus termination applications, it is strongly
recommended to use a switching frequency of
400 kHz to obtain clean and jitter free operation
in sourcing as well as sinking modes. Therefore,
the maximum input voltage that may be stepped
down to 0.6V at 400 kHz without jitter or pulse
skipping is 15 V.
Rev 6.0
16
相关PDF资料 |
PDF描述 |
|---|---|
| GBA43DTKH | CONN EDGECARD 86POS DIP .125 SLD |
| VI-JTZ-CY-S | CONVERTER MOD DC/DC 2V 20W |
| 25ZLJ3300M16X25 | CAP ALUM 3300UF 25V 20% RADIAL |
| VE-J3V-EX-F1 | CONVERTER MOD DC/DC 5.8V 75W |
| GBA43DTKD | CONN EDGECARD 86POS DIP .125 SLD |
相关代理商/技术参数 |
参数描述 |
|---|---|
| IR3832WMTRPBF | 功能描述:直流/直流开关调节器 4A SupIRBuck Reg 250-1500kHz, 1.5-16V RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| IR3837MPBF | 制造商:IRF 制造商全称:International Rectifier 功能描述:HIGHLY INTEGRATED 14A SINGLE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR |
| IR3837MTR1PBF | 功能描述:直流/直流开关调节器 14A SupIRBuck Reg 250-1500kHz, 1.5-16V RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| IR3837MTR1PBF | 制造商:International Rectifier 功能描述:IC DC-DC CONV 1.5 MHz QFN-17 制造商:International Rectifier 功能描述:IC, DC-DC CONV, 1.5 MHz, QFN-17 |
| IR3837MTR1PBF-CUT TAPE | 制造商:IR 功能描述:IR3837 Series 1.5 MHz 14 A Surface Mount Synchronous Buck Regulator - QFN-16 |
发布紧急采购，3分钟左右您将得到回复。