- 您现在的位置：买卖IC网 > PDF目录299873 > RP505K181A-TR (RICOH COMPANY LTD) SWITCHING CONTROLLER, 2500 kHz SWITCHING FREQ-MAX, PDSO8 PDF资料下载
参数资料
| 型号： | RP505K181A-TR |
| 厂商： | RICOH COMPANY LTD |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, 2500 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | 2 X 2 MM, HALOGEN FREE AND ROHS COMPLIANT, DFN-8 |
| 文件页数： | 5/32页 |
| 文件大小： | 938K |
| 代理商： | RP505K181A-TR |
第1页第2页第3页第4页当前第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
RP505K
13
Output Current and selection of External components
The relation between the output current and external components is as follows:
(Wherein, Ripple Current p-p value is described as IRP, ON resistance of Pch Tr. and Nch Tr. of LX are
respectively described as RONP and RONN, and the DC resistor of the inductor is described as RL.)
When Pch Tr. of LX is ON:
VIN = VOUT + (RONP + RL)
× IOUT + L × IRP / ton ................................................................. Equation 3
When Pch Tr. of LX is "OFF" (Nch Tr. is "ON"):
L
× IRP / toff = RONN × IOUT + VOUT + RL × IOUT ................................................................. Equation 4
Put Equation 4 to Equation 3 and solve for ON duty of Pch transistor, DON = ton / (toff + ton),
DON = (VOUT + RONN
× IOUT + RL × IOUT) / (VIN + RONN × IOUT RONP × IOUT)....................... Equation 5
Ripple Current is as follows:
IRP = (VIN VOUT RONP
× IOUT RL × IOUT) × DON / fosc / L............................................. Equation 6
wherein, peak current that flows through L, and LX Tr. is as follows:
ILXmax = IOUT + IRP / 2 .................................................................................................... Equation 7
Consider ILXmax, condition of input and output and select external components.
The above explanation is directed to the calculation in an ideal case in continuous mode.
相关PDF资料 |
PDF描述 |
|---|---|
| RP505K061B-TR | SWITCHING CONTROLLER, 2500 kHz SWITCHING FREQ-MAX, PDSO8 |
| RPM870-H14 | IrDA wireless communication transceiver IC (supports Ver. 1.2 Low Power) |
| RQ5RW15BB | FIXED POSITIVE REGULATOR, PDSO4 |
| RD5RW60CB | FIXED POSITIVE REGULATOR, DSO6 |
| RD5RW59CB | FIXED POSITIVE REGULATOR, DSO6 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| RP-505S | 制造商:RECOM 制造商全称:Recom International Power 功能描述:1 Watt SIP7 SIP7 Single & Dual Output |
| RP-509D | 制造商:RECOM 制造商全称:Recom International Power 功能描述:1 Watt SIP7 SIP7 Single & Dual Output |
| RP-509S | 制造商:RECOM 制造商全称:Recom International Power 功能描述:1 Watt SIP7 SIP7 Single & Dual Output |
| RP50GB | 制造商:Superior Electric 功能描述:Electrical Connector; Pin Receptacle; 0.25 in.; 1.25 in.; 0.25 in. (Max.); 50 A 制造商:Superior Electric 功能描述:RECEPTACLE PIN 50A BLACK 制造商:Superior Electric 功能描述:RECEPTACLE, PIN, 50A, BLACK 制造商:Superior Electric 功能描述:TEST RECEPTACLE, PIN-RCPT, 50A, WW, BLK; Series:RP50; Gender:Receptacle; Voltage Rating:250V; Current Rating:50A; Connector Mounting:Cable; Contact Termination:Wire Wrap; Body Material:Nylon Plastic; Color:Black ;RoHS Compliant: Yes 制造商:Superior Electric 功能描述:Conn Binding Post PIN 1 POS ST Panel Mount 1 Port |
| RP50GB | 制造商:Superior Electric 功能描述:Test Spring Probe |
发布紧急采购，3分钟左右您将得到回复。