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参数资料
| 型号： | IRU3065CLTR |
| 厂商： | International Rectifier |
| 文件页数： | 13/15页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR INV PWM SOT23-6 |
| 标准包装： | 1 |
| PWM 型： | 控制器 |
| 输出数： | 1 |
| 频率 - 最大： | 1.5MHz |
| 占空比： | 100% |
| 电源电压： | 5V |
| 降压： | 无 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 是 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | 0°C ~ 70°C |
| 封装/外壳： | SOT-23-6 |
| 包装： | 剪切带 (CT) |
| 配用： | IRDC3065-ND - LOW PWR SWTCH REG REF DESIGN KIT |
| 其它名称： | *IRU3065CLTR IRU3065CLCT |
IRU3065(PbF)
When I OUT =I OCP , the output voltage equals nominal volt-
age V OUT =V OUT(NOM) . From equation (15),we have
VI SEN
R S
I OCP =
1
2
×
×
V IN
V IN - V OUT +V D
---(17)
Vout versus output current
The above equation is used to select the current sens-
ing resistor R S .
Substitution of equation (16) into equation (13) results
in the relationship between frequency and output cur-
rent, that is
6
5
4
3
2
1
0
)
f S =
V IN
L × I PEAK
× ( 1-
2 × I OUT
I PEAK
--(18)
0
0.2
0.4
Output current (A)
0.6
0.8
The above equation indicates that the switching fre-
quency decreases when output current increases dur-
Predicted (-Vout)
Measured -Vout
V IN × (V D - V OUT(NOM) )
(V IN + V D -
V IN × (V D - V OUT(NOM) ) × R S
VI SEN × (V IN + V D -
ing power limit mode.
When I OUT =I OCP , the switching frequency reaches its
maximum. Substitution of V OUT =V OUT(NOM) and equation
(6) into equation (13) results in the maximum switching
frequency:
f S(MAX) =
V OUT(NOM) ) × L × I PEAK
f S(MAX) = ---(19)
V OUT(NOM) ) × L
Therefore, the inductance can be selected according
Figure 24- The comparison between predicted and
measured output voltage versus output current
Switching frequency versus output current
1200
1000
800
600
400
200
0
to the maximum desired frequency as shown in the fol-
0
0.2
0.4
0.6
0.8
lowing:
Output current (amp)
L
V IN × (V D - V OUT(NOM) )
(V IN + V D -
---(20)
Predicted fs(KHz)
Experiment fs (kHz)
V OUT(NOM) ) × f S(MAX) × I PEAK
Fig. 24 and Fig.25 shows the theorectical predication
and calculation results for the output voltage and fre-
quency versus output current.
Figure 25 - The comparison between predicted
and measured switching frequency versus
output current
www.irf.com
13
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相关代理商/技术参数 |
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|---|---|
| IRU3065CLTRPBF | 制造商:IRF 制造商全称:International Rectifier 功能描述:POSITIVE TO NEGATIVE DC TO DC CONTROLLER |
| IRU3072C | 制造商:IRF 制造商全称:International Rectifier 功能描述:20-PIN SYNCHRONOUS PWM CONTROLLER/ 3 LDO CONTROLLER |
| IRU3072CH | 制造商:IRF 制造商全称:International Rectifier 功能描述:20-PIN SYNCHRONOUS PWM CONTROLLER/ 3 LDO CONTROLLER |
| IRU3072CHTR | 制造商:International Rectifier 功能描述:VOLT MODE PWM CNTRLR 0.8V TO 24.75V/1.5V/1.8V/2.5V 1A 20MLPQ - Tape and Reel |
| IRU3073 | 制造商:IRF 制造商全称:International Rectifier 功能描述:SYNCHRONOUS PWM CONTROLLER WITH OVER-CURRENT PROTECTION / LDO CONTROLLER |
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