这里只讨论efficiency 与topology的问题.各位请把你做过的或知道的写出来供大家参观.
1.
型号:DCDC
拓扑: Forward
测试条件: Vin:48V(36-75). Vout:5V. Iout:5A.
效率:88%.
2.
型号:DCDC(half brick)
拓扑: Forward (active clamp synchronous switch)
测试条件: Vin:48V(36-75). Vout:5V. Iout:20A.
效率:92%
3.
型号:DCDC(half brick)
拓扑: Forward (active clamp synchronous switch)
测试条件: Vin:48V(36-75). Vout:3.3V. Iout:50A.
效率:90%
4.
型号:DCDC(half brick)
拓扑: Forward (active clamp)
测试条件: Vin:48V(38-58). Vout:24V. Iout:17A.
效率:92%
5.
型号:DCDC(1/4 brick)
拓扑: four quadrant (synchronous switch)
测试条件: Vin:48V(35-75). Vout:2.5V. Iout:20A.
效率:90%
6.
型号:DCDC(1/4 brick)
拓扑: half bridge (synchronous switch)
测试条件: Vin:48V(40-57). Vout:12V. Iout:22A.
效率:95%
7.
型号:DCDC
拓扑: buck converter (synchronous switch)
测试条件: Vin:12V. Vout:1.8V. Iout:90A.
效率:86%.
8.
型号:DCDC
拓扑: buck converter (synchronous switch)
测试条件: Vin:12V. Vout:2.5V. Iout:80A.
效率:91%
9.
型号:ACDC(PFC)
拓扑: interleaving converter
测试条件: Vin:AC220 .Vout:12V. Iout:100A.
效率:84%
10.
型号:ACDC(PFC)
拓扑: interleaving converter
测试条件: Vin:AC220 .Vout:57V. Iout:40A.
效率:92%
11.
型号:ACDC(PFC)
拓扑: interleaving converter
测试条件: Vin:AC220 .Vout:24V. Iout:40A.
效率:90%.
12.
型号:ACDC(PFC)
拓扑: LLC
测试条件: Vin:AC220 .Vout:12V. Iout:10A.
效率:86%
efficiency 与topology
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@liyongzhi
dlinli: foryoureferrence:1156899595.doc
dlinli:
this is a schematic for Forward (active clamp synchronous switch).for your reference.
1156904800.doc
this is a schematic for Forward (active clamp synchronous switch).for your reference.
1156904800.doc
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@dlinli
这么高啊,怎么实现的?这个瓦数我们用推挽做也就不到85的效率,虽然是28V输入.DIODE用的型号可以告知吗?还有问您个问题:自驱动同步整流的空载和同步MOSFET的Q值关系很大吧/我用一个高Q和低Q的,空载电流相差上百个毫安.
Dear dlinli:
Below is the reply:
1.efficiency list(cpk)
89.135
89.174
89.180
89.198
89.218
89.179
89.191
89.124
89.122
89.172
89.117
89.276
89.206
89.108
89.156
89.253
89.139
89.076
89.219
89.235
89.193
89.273
89.147
89.065
89.235
89.217
89.311
89.170
89.054
89.290
89.196
89.243
89.157
89.121
89.167
89.004
89.225
89.141
89.215
2. Diode: SKY PWR SMT,2,6A,60V,DPAK,12CWQ06FN
3.Mosfet: NMOS,150V,20A,0.063,DPAK,PSMN063
4.Transformer,inductor:EFD20.
6. Forward (active clamp).
7. MOSFET的Q值大,Lose一定 大,特别高压Vds(Qds)时.
Below is the reply:
1.efficiency list(cpk)
89.135
89.174
89.180
89.198
89.218
89.179
89.191
89.124
89.122
89.172
89.117
89.276
89.206
89.108
89.156
89.253
89.139
89.076
89.219
89.235
89.193
89.273
89.147
89.065
89.235
89.217
89.311
89.170
89.054
89.290
89.196
89.243
89.157
89.121
89.167
89.004
89.225
89.141
89.215
2. Diode: SKY PWR SMT,2,6A,60V,DPAK,12CWQ06FN
3.Mosfet: NMOS,150V,20A,0.063,DPAK,PSMN063
4.Transformer,inductor:EFD20.
6. Forward (active clamp).
7. MOSFET的Q值大,Lose一定 大,特别高压Vds(Qds)时.
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@liyongzhi
Deardlinli:Belowisthereply:1.efficiencylist(cpk)89.13589.17489.18089.19889.21889.17989.19189.12489.12289.17289.11789.27689.20689.10889.15689.25389.13989.07689.21989.23589.19389.27389.14789.06589.23589.21789.31189.17089.05489.29089.19689.24389.15789.12189.16789.00489.22589.14189.2152.Diode:SKYPWRSMT,2,6A,60V,DPAK,12CWQ06FN3.Mosfet:NMOS,150V,20A,0.063,DPAK,PSMN0634.Transformer,inductor:EFD20.6.Forward(activeclamp).7.MOSFET的Q值大,Lose一定大,特别高压Vds(Qds)时.
Great,the data are so charming for me,nearly perfect!
thanks for your messages!Are you in ShenZhen?i am a student from UESTC,hope to be your friends.
thanks for your messages!Are you in ShenZhen?i am a student from UESTC,hope to be your friends.
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@liyongzhi
Deardlinli:Belowisthereply:1.efficiencylist(cpk)89.13589.17489.18089.19889.21889.17989.19189.12489.12289.17289.11789.27689.20689.10889.15689.25389.13989.07689.21989.23589.19389.27389.14789.06589.23589.21789.31189.17089.05489.29089.19689.24389.15789.12189.16789.00489.22589.14189.2152.Diode:SKYPWRSMT,2,6A,60V,DPAK,12CWQ06FN3.Mosfet:NMOS,150V,20A,0.063,DPAK,PSMN0634.Transformer,inductor:EFD20.6.Forward(activeclamp).7.MOSFET的Q值大,Lose一定大,特别高压Vds(Qds)时.
问问你的匝比多少,5VOUT,48VIN的情况下,我现在变压器发热厉害,不知道匝比是否不合适.
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