SLVA236B April   2006  – October 2026 TLV61220 , TLV62080 , TLV62085 , TLV62090 , TLV62130 , TLV62130A , TLV62150 , TLV62150A , TPS60100 , TPS60101 , TPS60110 , TPS60111 , TPS60120 , TPS60121 , TPS60122 , TPS60123 , TPS60124 , TPS60125 , TPS60130 , TPS60131 , TPS60132 , TPS60133 , TPS60140 , TPS60141 , TPS60150 , TPS60151 , TPS60200 , TPS60201 , TPS60202 , TPS60203 , TPS60204 , TPS60205 , TPS60210 , TPS60211 , TPS60212 , TPS60213 , TPS60230 , TPS60231 , TPS60240 , TPS60241 , TPS60242 , TPS60243 , TPS60250 , TPS60252 , TPS60255 , TPS60300 , TPS60301 , TPS60302 , TPS60303 , TPS60310 , TPS60311 , TPS60312 , TPS60313 , TPS60400 , TPS60400-Q1 , TPS60401 , TPS60401-Q1 , TPS60402 , TPS60402-Q1 , TPS60403 , TPS60403-Q1 , TPS60500 , TPS60501 , TPS60502 , TPS60503 , TPS61000 , TPS61002 , TPS61005 , TPS61006 , TPS61007 , TPS61010 , TPS61012 , TPS61013 , TPS61014 , TPS61015 , TPS61016 , TPS61020 , TPS61021A , TPS61024 , TPS61025 , TPS61026 , TPS61027 , TPS61028 , TPS61029 , TPS61029-Q1 , TPS61030 , TPS61031 , TPS61032 , TPS61040 , TPS61040-Q1 , TPS61041 , TPS61041-Q1 , TPS61042 , TPS61043 , TPS61045 , TPS61046 , TPS61050 , TPS61052 , TPS61054 , TPS61055 , TPS61060 , TPS61061 , TPS61062 , TPS61070 , TPS61071 , TPS61071-Q1 , TPS61072 , TPS61073 , TPS61085 , TPS61085T , TPS61086 , TPS61087 , TPS61087-Q1 , TPS61089 , TPS61090 , TPS61091 , TPS61092 , TPS61093 , TPS61093-Q1 , TPS61097-33 , TPS61098 , TPS610981 , TPS610982 , TPS610985 , TPS610986 , TPS610987 , TPS61099 , TPS61100 , TPS61107 , TPS61120 , TPS61121 , TPS61122 , TPS61130 , TPS61131 , TPS61140 , TPS61141 , TPS61150 , TPS61150A , TPS61151 , TPS61160 , TPS61160A , TPS61161 , TPS61161-Q1 , TPS61161A , TPS61165 , TPS61165-Q1 , TPS61166 , TPS61170 , TPS61170-Q1 , TPS61175 , TPS61175-Q1 , TPS61180 , TPS61181 , TPS61181A , TPS61182 , TPS61183 , TPS61185 , TPS61187 , TPS61195 , TPS61196 , TPS61199 , TPS61200 , TPS61201 , TPS61202 , TPS61220 , TPS61221 , TPS61222 , TPS61222-EP , TPS61230 , TPS61230A , TPS61235P , TPS61236P , TPS61240 , TPS61240-Q1 , TPS61241 , TPS61251 , TPS61252 , TPS61253 , TPS61254 , TPS61256 , TPS61258 , TPS61259 , TPS612592 , TPS61260 , TPS61261 , TPS61291 , TPS61300 , TPS61301 , TPS61305 , TPS61310 , TPS61325 , TPS61500 , TPS62000 , TPS62000-HT , TPS62002 , TPS62003 , TPS62004 , TPS62005 , TPS62006 , TPS62007 , TPS62008 , TPS62020 , TPS62021 , TPS62026 , TPS62040 , TPS62042 , TPS62043 , TPS62044 , TPS62046 , TPS62050 , TPS62051 , TPS62052 , TPS62054 , TPS62056 , TPS62060 , TPS62061 , TPS62063 , TPS62065 , TPS62067 , TPS62080 , TPS62080A , TPS62081 , TPS62082 , TPS62085 , TPS62086 , TPS62087 , TPS62088 , TPS62090 , TPS62090-Q1 , TPS62091 , TPS62092 , TPS62093 , TPS62097 , TPS62097-Q1 , TPS62100 , TPS62101 , TPS62102 , TPS62103 , TPS62110 , TPS62110-EP , TPS62110-HT , TPS62110-Q1 , TPS62111 , TPS62111-EP , TPS62112 , TPS62112-EP , TPS62113 , TPS62120 , TPS62122 , TPS62125 , TPS62130 , TPS62130A , TPS62131 , TPS62132 , TPS62133 , TPS62134A , TPS62134B , TPS62134C , TPS62134D , TPS62135 , TPS62136 , TPS62140 , TPS62140A , TPS62141 , TPS62142 , TPS62143 , TPS62150 , TPS62150A , TPS62151 , TPS62152 , TPS62153 , TPS62160 , TPS62161 , TPS62162 , TPS62163 , TPS62170 , TPS62171 , TPS62172 , TPS62173 , TPS62175 , TPS62177 , TPS62180 , TPS62184 , TPS62200 , TPS62201 , TPS62202 , TPS62203 , TPS62204 , TPS62205 , TPS62207 , TPS62208 , TPS62220 , TPS62221 , TPS62222 , TPS62223 , TPS62224 , TPS62225 , TPS62227 , TPS62228 , TPS62230 , TPS62231-Q1 , TPS622314-Q1 , TPS62240 , TPS62242 , TPS62242-Q1 , TPS62243 , TPS62250 , TPS62260 , TPS62260-Q1 , TPS62261 , TPS62262-Q1 , TPS62263 , TPS62263-Q1 , TPS62270 , TPS62272 , TPS62273 , TPS62290 , TPS62290-Q1 , TPS62291 , TPS62293 , TPS62293-Q1 , TPS62300 , TPS62301 , TPS62302 , TPS62303 , TPS62304 , TPS62305 , TPS62320 , TPS62321 , TPS62350 , TPS62352 , TPS62353 , TPS62354 , TPS62355 , TPS62356 , TPS62360 , TPS62361B , TPS62362 , TPS62363 , TPS62366A , TPS62366B , TPS62400 , TPS62400-Q1 , TPS62401 , TPS62402 , TPS62402-Q1 , TPS62403 , TPS62404 , TPS62404-Q1 , TPS62410 , TPS62410-Q1 , TPS62420 , TPS62420-Q1 , TPS62421 , TPS62510 , TPS62560 , TPS62561 , TPS62562 , TPS62590 , TPS62590-Q1 , TPS62601 , TPS62612 , TPS62615 , TPS62616 , TPS62619 , TPS62620 , TPS62621 , TPS62622 , TPS62623 , TPS62624 , TPS62625 , TPS62650 , TPS62650-Q1 , TPS62651 , TPS62660 , TPS62665 , TPS62671 , TPS62672 , TPS62674 , TPS62675 , TPS62679 , TPS62690 , TPS62693 , TPS62700 , TPS62730 , TPS62732 , TPS62733 , TPS62740 , TPS62750 , TPS62751 , TPS62800 , TPS62801 , TPS62802 , TPS62806 , TPS62807 , TPS62808 , TPS62821 , TPS62822 , TPS62823 , TPS62825 , TPS62826 , TPS62840 , TPS63000 , TPS63000-Q1 , TPS63001 , TPS63002 , TPS63010 , TPS63011 , TPS63012 , TPS63020 , TPS63021 , TPS63024 , TPS630241 , TPS630242 , TPS630250 , TPS630251 , TPS630252 , TPS63027 , TPS63030 , TPS63031 , TPS63036 , TPS63050 , TPS63051 , TPS63060 , TPS63061 , TPS63070 , TPS63700 , TPS63805 , TPS65090 , TPSM82810 , TPSM82813 , TPSM82816 , TPSM82821 , TPSM82822 , TPSM82864A , TPSM82866A , TPSM82866C

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Efficiency Measurements
    1. 2.1 PWM Efficiency Measurements
    2. 2.2 PFM Efficiency Measurements
  6. 3Conclusion
  7. 4References
  8. 5Revision History

PWM Efficiency Measurements

When measuring the efficiency of DC-DC converters, it is important that the voltage and current meters are sensing their values at the proper locations. For example, the setup shown in Figure 2-1 can be used to perform efficiency measurements of a boost converter operating in PWM mode.

TLV61220 PWM MeasurementsFigure 2-1 PWM Measurements

Most laboratory power supplies display their voltage output setting, but it is important that the voltage displayed on the power supply is not used in efficiency calculations. Instead, a separate voltmeter should be connected directly across the input of the converter, as shown in Figure 2-1. This ensures that the measured voltage is the true voltage at the input of the converter and does not include additional voltage drops across the current meter or any cabling. Similarly, a separate voltmeter should be connected directly across the output of the converter to acquire the output voltage values.