Texas Instruments Power Topologies ti.com/powertopologies D = V out + V f V in + V f D = V out V in V Q1 =V in + V f V D1 =V in V Q1 =V in V Q2 =V in D = V out + V f - V in V out + V f V Q1 = V out + V f V D1 = V out D = -V out + V f -V out + V f + V in V Q1 = V in + V f - V out V D1 = V in - V out D = V out + V f V out + V f + V in V Q1 = V in + V out + V f + V C1,ripple 2 V D1 = V in + V out + V C1,ripple 2 D = -V out + V f -V out + V f + V in V Q1 = V in - V out + V f + V C1,ripple 2 V D1 = V in - V out + V C1,ripple 2 D = V out + V f V out + V f + V in V Q1 = V in + V out + V f + V C1,ripple 2 V D1 = V in + V out + V C1,ripple 2 Buck Synchronous Buck Boost Inverting Buck - Boost Sepic Cuk Zeta Duty Cycle Q1 FET Voltage D1 Diode Voltage PWM Q1 FET Voltage Q1 FET Current D1 Diode / Q2 FET Voltage D1 Diode / Q2 FET Current L1 Inductor Current L2 Inductor Current D = V out_pri V in V Q1 =V in V D1 =V out_sec + (V in -V out_pri ) N s N p V D1 =V out + V in V Q1 =V in + (V out + V f ) N s N p N p N s N p N s N p N s D = (V out +V f ) V in + (V out +V f ) N p N s N p N s D = (V out +V f ) V in + (V out +V f ) V D1 =V out + V in N s N p V in + (V out + V f ) N p N s V Q1 = 2 Fly - Buck™ Flyback Two Switch Flyback Duty Cycle Q1 FET Voltage D1 Diode Voltage PWM Q1 FET Voltage Q1 FET Current D1 Diode Voltage D1 Diode Current Np Primary Current Ns Secondary Current Q1 Np D3 Q2 D4 D1 Ns Co Ci N s N p N s N p D = (V out + V f ) V in N s N p D = (V out + V f ) V in N s N p D = (V out + V f ) V in V Q1 = V Q1 =2 V in + V f V Q1 =V in + V f V D1 =V clamp - V f N s N d V D1 = (V in + V f ) - V f N s N p V D2 =V in - V f Active Clamp Forward Single Switch Forward Two Switch Forward D2 Diode Voltage D1 Diode Voltage Q1 FET Voltage Duty Cycle (1-D) V in N s N p V D2 =V in - V f N s N p V D2 =V in - V f N p V D1 = (V in + 2 V f ) N s - V f Co L1 D2 D1 Np Ns Q1 Q2 D3 D4 Ci Inductor L1 Current Ns Secondary Current Np Primary Current FET Q1 Current FET Q1 Voltage PWM V Q1 = 2 · V in N s N p V D1 = 2 · V in · - V f D = (V out + V f ) N s N p V in 1 2 Push-Pull Duty Cycle Q1 FET Voltage D1 Diode Voltage PWM FET Q1 Voltage FET Q1 Current Np1 Primary Current Ns2 Secondary Current Inductor L1 Current D = V out + V f N s N p V in 1 2 N p N s V Q1 = V in +2 (V out + V f ) V D1 =2 (V out + V f ) Weinberg Duty Cycle Q1 FET Voltage D1 Diode Voltage PWM FET Q1 Voltage FET Q1 Current Np Primary Current Ns Secondary Current Np1 Primary Current Ns1 Secondary Current Half - Bridge Full - Bridge Phase Shifted Full - Bridge Duty Cycle Q1 FET Voltage D1 Diode Voltage PWM Q1 FET Voltage Q1 FET Current Np Primary Current Ns Secondary Current & Diode D1 Current Diode D1 Voltage Inductor L1 Current D = V out + V f N s N p V in V Q1 = V in N s N p V D1 =V in - V f 1 2 D = V out + V f N s N p V in V Q1 = V in N s N p V D1 = 2 V in - V f D = V out + V f L p + L sh N s N p V in L p V Q1 = V in (Transformer) (Transformer) L p + L s N s N p V D1 = 2 V in L p - V f Co L1 Q2 Q1 Np Ns1 Ns2 D2 D1 Q3 Q4 Ci Q1 D1 Np2 Ns2 Np1 Ns1 D2 Q2 Np D3 Ns Ci Co L1 Co D2 D1 Ci Q2 Q1 Np2 Ns2 Np1 Ns1 SLUW001G The platform bar and fly-buck are trademarks of Texas Instruments. All other trademarks are the property of their respective owners. © 2019 Texas Instruments Incorporated For more power supply design content visit ti.com/psds
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Texas Instruments Power Topologies
ti.com/powertopologies
D =Vout + VfVin+ Vf
D =Vout
Vin
VQ1 = Vin + Vf
VD1 = Vin
VQ1 = Vin
VQ2 = Vin
D =Vout + Vf - Vin
Vout + Vf
VQ1 = Vout + Vf
VD1 = Vout
D =-Vout + Vf
-Vout + Vf + Vin
VQ1 = Vin + Vf - Vout
VD1 = Vin - Vout
D =Vout + Vf
Vout + Vf + Vin
VQ1 = Vin + Vout + Vf +VC1,ripple
2
VD1 = Vin + Vout + VC1,ripple
2
D =-Vout + Vf
-Vout + Vf + Vin
VQ1 = Vin - Vout + Vf +VC1,ripple
2
VD1 = Vin - Vout + VC1,ripple
2
D =Vout + Vf
Vout + Vf + Vin
VQ1 = Vin + Vout + Vf +VC1,ripple
2
VD1 = Vin + Vout +VC1,ripple
2
Buck Synchronous Buck Boost Inverting Buck - Boost Sepic Cuk Zeta
DutyCycle
Q1 FETVoltage
D1 DiodeVoltage
PWM
Q1 FET Voltage
Q1 FET Current
D1 Diode / Q2 FET Voltage
D1 Diode /Q2 FET Current
L1 InductorCurrent
L2 InductorCurrent
D = Vout_pri
Vin
VQ1 = Vin
VD1 = Vout_sec + (Vin-Vout_pri) N
s
Np
VD1 = Vout + Vin
VQ1 = Vin + (Vout + Vf)
Ns
Np
Np
Ns
Np
Ns
Np
Ns
D =
(Vout + Vf)
Vin + (Vout + Vf)
Np
Ns
Np
Ns
D =
(Vout + Vf)
Vin + (Vout + Vf)
VD1 = Vout + Vin
Ns
Np
Vin + (Vout + Vf) N
p
NsVQ1 =
2
Fly - Buck™ Flyback Two Switch Flyback
Duty Cycle
Q1 FETVoltage
D1 DiodeVoltage
PWM
Q1 FETVoltage
Q1 FETCurrent
D1 DiodeVoltage
D1 DiodeCurrent
Np PrimaryCurrent
Ns SecondaryCurrent
Q1
Np
D3
Q2D4 D1
Ns CoCi
Ns
Np
Ns
Np
D =(Vout + Vf)
Vin
Ns
Np
D = (Vout + Vf)
Vin
Ns
Np
D =(Vout + Vf)
Vin
VQ1 = VQ1 = 2 Vin + Vf VQ1 = Vin + Vf
VD1 = Vclamp - Vf
Ns
Nd
VD1 = (Vin + Vf) - Vf
Ns
Np
VD2 = Vin - Vf
Active Clamp Forward Single Switch Forward Two Switch Forward
D2 DiodeVoltage
D1 DiodeVoltage
Q1 FETVoltage
DutyCycle
(1-D)
Vin
Ns
Np
VD2 = Vin - Vf
Ns
Np
VD2 = Vin - Vf
Np
VD1 = (Vin + 2 Vf)N
s- Vf
Co
L1
D2
D1
Np Ns
Q1
Q2
D3
D4
Ci
Inductor L1Current
Ns Secondary
Current
NpPrimaryCurrent
FET Q1Current
FET Q1Voltage
PWM
VQ1 = 2 · Vin
Ns
Np
VD1 = 2 · Vin · - Vf
D =(Vout + Vf)
Ns
Np
Vin
1
2
Push-Pull
DutyCycle
Q1 FETVoltage
D1 DiodeVoltage
PWM
FET Q1Voltage
FET Q1Current
Np1 PrimaryCurrent
Ns2 Secondary
Current
Inductor L1Current
D =Vout + Vf
Ns
Np
Vin
1
2
Np
Ns
VQ1 = Vin + 2 (Vout + Vf)
VD1 = 2 (Vout + Vf)
Weinberg
DutyCycle
Q1 FETVoltage
D1 DiodeVoltage
PWM
FET Q1Voltage
FET Q1Current
Np Primary Current
Ns Secondary
Current
Np1 Primary Current
Ns1 Secondary
Current
Half - Bridge Full - Bridge Phase Shifted Full - Bridge
Duty Cycle
Q1 FETVoltage
D1 DiodeVoltage
PWM
Q1 FETVoltage
Q1 FETCurrent
Np PrimaryCurrent
Ns SecondaryCurrent & Diode D1 Current
Diode D1Voltage
Inductor L1Current
D =Vout + Vf
NsNp
Vin
VQ1 = Vin
NsNp
VD1 = Vin - Vf
12
D =Vout + Vf
NsNp
Vin
VQ1 = Vin
Ns
NpVD1 = 2 Vin
- Vf
D =
Vout + Vf
Lp + Lsh
NsNp
Vin Lp
VQ1 = Vin
(Transformer)
(Transformer)
Lp + Ls
Ns
NpVD1 =
2 Vin Lp- Vf
Co
L1Q2
Q1
Np
Ns1
Ns2
D2
D1Q3
Q4
Ci
Q1
D1
Np2 Ns2
Np1 Ns1D2
Q2
Np
D3
Ns
Ci
Co
L1
Co
D2
D1
Ci
Q2 Q1
Np2 Ns2
Np1 Ns1
SLUW001G
The platform bar and fly-buck are trademarks of Texas Instruments. All other trademarks are the property of their respective owners.
© 2019 Texas Instruments Incorporated
For more power supply design content visit ti.com/psds
IMPORTANT NOTICE AND DISCLAIMER
TI PROVIDES TECHNICAL AND RELIABILITY DATA (INCLUDING DATASHEETS), DESIGN RESOURCES (INCLUDING REFERENCE DESIGNS), APPLICATION OR OTHER DESIGN ADVICE, WEB TOOLS, SAFETY INFORMATION, AND OTHER RESOURCES “AS IS” AND WITH ALL FAULTS, AND DISCLAIMS ALL WARRANTIES, EXPRESS AND IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY RIGHTS.These resources are intended for skilled developers designing with TI products. You are solely responsible for (1) selecting the appropriate TI products for your application, (2) designing, validating and testing your application, and (3) ensuring your application meets applicable standards, and any other safety, security, or other requirements. These resources are subject to change without notice. TI grants you permission to use these resources only for development of an application that uses the TI products described in the resource. Other reproduction and display of these resources is prohibited. No license is granted to any other TI intellectual property right or to any third party intellectual property right. TI disclaims responsibility for, and you will fully indemnify TI and its representatives against, any claims, damages, costs, losses, and liabilities arising out of your use of these resources.TI’s products are provided subject to TI’s Terms of Sale (www.ti.com/legal/termsofsale.html) or other applicable terms available either on ti.com or provided in conjunction with such TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products.
Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265Copyright © 2020, Texas Instruments Incorporated
Related Documents
