Nā ʻāpana uila ʻokoʻa Semicon kumu maikaʻi loa STC AVR 8254 Microcontroller MCU IC TL2844BDR-8 SOP
ʻO ka TL284xB a me TL384xB pūʻulu kūpono me ka TL284x maʻamau a me TL384x me nā mea hou aʻe.Ua kuhikuhi ʻia ke ʻano o ka hoʻomaka ʻana he 0.5 mA (max), aʻo ka hoʻokuʻu ʻana o ka oscillator e ʻoki ʻia i 8.3 mA (typ).Eia kekahi, i ka wā o ka undervoltage lockout kūlana, loaʻa i ka puka ka nui o ka volta saturation o 1.2 V i ka wā e hāʻule ana ʻo 10 mA (VCC = 5 V).ʻO nā ʻokoʻa nui ma waena o nā lālā o kēia pūʻulu ʻo nā paepae UVLO a me nā pae hoʻokele duty-cycle kiʻekiʻe.ʻO nā paepae UVLO maʻamau o 16 V (on) a me 10 V (off) ma nā polokalamu TLx842B a me TLx844B e kūpono iā lākou i nā noi waho-laina.ʻO nā paepae maʻamau e pili ana no nā polokalamu TLx843B a me TLx845B he 8.4 V (on) a me 7.6 V (off).Hiki i nā polokalamu TLx842B a me TLx843B ke hana i nā pōʻai hana kokoke i 100%.Loaʻa i ka TLx844B a me TLx845B ka laulā hana o 0% a i ka 50% ma o ka hoʻohui ʻana i ka flip-flop toggle i loko, kahi e hoʻopau ai i ka huahana mai kēlā me kēia pōʻai uaki ʻē aʻe. 40°C a i 85°C.Hōʻike ʻia nā polokalamu TL384xB-series no ka hana ʻana mai 0°C a 70°C.
Huahana Huahana
| ANO | HOIKE |
| Māhele | Nā Kaapuni Hoʻohui (IC) Interface - Nā CODEC |
| ʻO Mfr | Nā mea kani ʻo Texas |
| moʻo | - |
| Pūʻolo | Lepe & Reel (TR) ʻOki lipine (CT) Digi-Reel® |
| SPQ | 250T&R |
| Kūlana Huahana | ʻeleu |
| ʻAno | Leo Stereo |
| Ikepili Ikepili | ʻIkepili Leo PCM |
| Hoʻoholo (Bits) | 24 b |
| Ka helu o nā ADC / DAC | 2 / 2 |
| Sigma Delta | ʻAe |
| Lakiō S/N, ADCs / DACs (db) ʻAno | 92 / 102 |
| Ka Laulā Paʻa, ADCs / DACs (db) ʻAno | 93 / 97 |
| Voltage - Hoʻolako, Analog | 2.7V ~ 3.6V |
| Voltage - Hoʻolako, Digital | 1.65V ~ 1.95V |
| Ka Mahana Hana | -40°C ~ 85°C |
| ʻAno kau ʻana | Mauna ʻili |
| Pūʻolo / hihia | 32-VFQFN Papa Hōʻike |
| Pūʻolo Mea Mea Hoʻolako | 32-VQFN (5x5) |
| Helu Huahana Kumu | TLV320 |
PWM hooponopono
ʻO ka Pulse Width Modulation (PWM) e pili ana i ka hoʻohana ʻana i ka hoʻopuka kikohoʻe o kahi microprocessor e hoʻomalu i kahi kaapuni analog a he ala ia e hoʻopili ai i ka pae o kahi hōʻailona analog.ʻO ka hoʻomalu ʻana i nā kaapuni analog me ke kikohoʻe hiki ke hōʻemi nui i ke kumukūʻai a me ka hoʻohana mana o kahi ʻōnaehana.Nui nā microcontrollers i loko o lākou nā mana PWM.
Kumukānāwai
ʻO ka wehewehe pōkole o ke kumumanaʻo o ka mea hoʻokele PWM
Hoʻokumu ʻia ka manaʻo kumu o ka mana PWM ma ka ʻoiaʻiʻo o nā pulse haiki o ka leo impulse like a me nā ʻano like ʻole ka hopena like ke hoʻohui ʻia i kahi loulou me ka inertia.Aia nā ʻano like ʻole e hoʻokaʻawale i ka modulation ākea pulse, e like me ka unipolar a me ka bipolar, synchronous a asynchronous, rectangular wave modulation, a me ka modulation wave sine.ʻO ke ʻano hoʻomalu PWM unipolar, ʻo ia ka mea e hoʻololi wale ʻia ka nalu lawe ma ka ʻaoʻao hoʻokahi i ka hapalua pōʻai, a ua hoʻololi ʻia ka nalu PWM ma kahi ʻaoʻao hoʻokahi, ʻoiai ke ʻano hoʻomalu PWM bipolar e hoʻololi i ka nalu lawe ma nā ʻaoʻao ʻelua i ka hapalua pōʻai. , a ua hoʻololi pū ʻia ka nalu PWM i ʻelua ʻaoʻao.Ma muli o ka hoʻonohonoho ʻana o ka hōʻailona lawe me ka hōʻailona modulating, hiki ke hoʻokaʻawale ʻia ka mana PWM i ka modulation synchronous a me ka modulation asynchronous.Hōʻike ʻia ka hoʻololi ʻana o ka laula o ka pulse waveform e like me ka laulā o ke kolamu puka pulse ākea, a hiki ke hoʻomalu i kekahi helu o nā harmonics;Hōʻike ʻia ka hoʻololi ʻana i ka laulā pulse waveform e ka kolamu ākea pulse puka, ʻaʻole like ka laulā, hoʻololi ka laulā e like me ke kānāwai sine, kokoke ka hawewe puka i ka hawewe sine.Ua kapa ʻia ʻo SPWM ka hoʻololi ʻana i ka laula o ka pulse hawewe.ʻO ka hanaʻana i ka laulā pulse e like me ka hōʻailona mana ke kī i kēiaʻano.Hoʻohana mau ʻia ke ʻano hana hoʻohālikelike ʻano hawewe triangular, ke ʻano hoʻohālikelike hysteresis loop, a me ke ʻano vector volta space.
Nā mea hoʻoponopono PWM
ʻO nā mea hoʻoponopono PWM he mau mea hana kaulana.
ʻO nā mea kaulana loa ʻo Texas Instruments, Motorola, Feifei Semiconductor, Unitrode, Micro Linear, Silicon General Semiconductor, Siemens, STMicroelectronics, a me Royal Philips Semiconductor ma Netherlands, etc.
E pili ana i ka Huahana
Hāʻawi ka TL284xB a me TL384xB o nā kaʻa kaʻa hoʻohui i nā hiʻohiʻona e pono ai e hoʻokō i nā papa hana mana o waho a i ʻole dc-to-dc paʻa-frequency current-mode control schemes, me ka liʻiliʻi o nā mea o waho.ʻO nā kaapuni i hoʻokō ʻia i loko, aia kahi undervoltage lockout (UVLO) a me kahi kuhikuhi pololei i ʻoki ʻia no ka pololei ma ka hoʻokomo ʻana i ka amplifier hewa.ʻO nā kaʻapuni kūloko ʻē aʻe e pili ana i ka loiloi e hōʻoia i ka hana latched, kahi mea hoʻohālikelike pulse-width modulation (PWM) e hāʻawi pū ana i ka mana palena o kēia manawa, a me kahi pae puka totem-pole i hoʻolālā ʻia no ke kumu a i ʻole e hoʻoheheʻe i ke au kiʻekiʻe.ʻO ka pae hoʻopuka, kūpono no ka hoʻokele ʻana i nā MOSFET N-channel, haʻahaʻa i ka wā ma waho.
ʻO ka TL284xB a me TL384xB pūʻulu kūpono me ka TL284x maʻamau a me TL384x me nā mea hou aʻe.Ua kuhikuhi ʻia ke ʻano o ka hoʻomaka ʻana he 0.5 mA (max), aʻo ka hoʻokuʻu ʻana o ka oscillator e ʻoki ʻia i 8.3 mA (typ).Eia kekahi, i ka wā o ka undervoltage lockout kūlana, loaʻa i ka puka ka nui o ka volta saturation o 1.2 V i ka wā e hāʻule ana ʻo 10 mA (VCC = 5 V).
ʻO nā ʻokoʻa nui ma waena o nā lālā o kēia pūʻulu ʻo nā paepae UVLO a me nā pae hoʻokele duty-cycle kiʻekiʻe.ʻO nā paepae UVLO maʻamau o 16 V (on) a me 10 V (off) ma nā polokalamu TLx842B a me TLx844B e kūpono iā lākou i nā noi waho-laina.ʻO nā paepae maʻamau e pili ana no nā polokalamu TLx843B a me TLx845B he 8.4 V (on) a me 7.6 V (off).Hiki i nā polokalamu TLx842B a me TLx843B ke hana i nā pōʻai hana kokoke i 100%.Loaʻa i ka TLx844B a me TLx845B ka laulā hana o ka 0% a hiki i ka 50% ma o ka hoʻohui ʻana i kahi flip-flop hoʻololi kūloko, kahi e hoʻopau ai i ka puka mai kēlā me kēia pōʻai uaki ʻē aʻe. 40°C a i 85°C.Hōʻike ʻia nā polokalamu TL384xB-series no ka hana ʻana mai 0°C a 70°C.
