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參數(shù)資料
| 型號(hào)： | LTC1922-1 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Synchronous Dual Mode Phase Modulated Full Bridge Controllers |
| 中文描述： | 同步相位調(diào)制的雙模式全橋控制器 |
| 文件頁(yè)數(shù)： | 10/28頁(yè) |
| 文件大?。?/td> | 319K |
| 代理商： | LTC1922-1 |
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LTC3722-1/LTC3722-2
10
372212i
OPERATIOU
Phase Shift Full-Bridge PWM
Conventional full-bridge switching power supply topolo-
gies are often employed for high power, isolated DC/DC
and off-line converters. Although they require two addi-
tional switching elements, substantially greater power and
higher efficiency can be attained for a given transformer
size compared to the more common single-ended forward
and flyback converters. These improvements are realized
since the full-bridge converter delivers power during both
parts of the switching cycle, reducing transformer core
loss and lowering voltage and current stresses. The full-
bridge converter also provides inherent automatic trans-
former flux reset and balancing due to its bidirectional
drive configuration. As a result, the maximum duty cycle
range is extended, further improving efficiency. Soft switch-
ing variations on the full-bridge topology have been pro-
posed to improve and extend its performance and applica-
tion. These zero voltage switching (ZVS) techniques ex-
TIW
W
COMP
COMP
SYNC TURN OFF
DELAY (PROGRAMMABLE)
SYNC TURN OFF
DELAY (PROGRAMMABLE)
PASSIVE LEG
DELAY
ACTIVE LEG
DELAY
OUTA
OUTB
OUTC
OUTD
RAMP
COMP
OUTE
OUTF
3722 TD
NOTE: SHADED AREAS CORRESPOND TO POWER DELIVERY PULSES.
ploit the generally undesirable parasitic elements present
within the power stage. The parasitic elements are utilized
to drive near lossless switching transitions for all of the
external power MOSFETs.
LTC3722-1/LTC3722-2 phase shift PWM controllers pro-
vide enhanced performance and simplify the design task
required for a ZVS phase shifted full-bridge converter. The
primary attributes of the LTC3722-1/LTC3722-2 as com-
pared to currently available solutions include:
1) Truly adaptive and accurate (DirectSense technology)
ZVS with programmable timeout.
Benefit: higher efficiency, higher duty cycle capability,
eliminates external trim.
2) Fixed ZVS capability.
Benefit: enables secondary side control and simplifies
external circuit.
相關(guān)PDF資料 |
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| LTC1696 | Synchronous Dual Mode Phase Modulated Full Bridge Controllers |
| LTC3722-2 | Synchronous Dual Mode Phase Modulated Full Bridge Controllers |
| LTC3727 | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| LTC3727EG-1 | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| LTC3727EG | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
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| LTC1922EG-1 | 功能描述:IC REG CTRLR ISO PWM 20-SSOP RoHS:否 類(lèi)別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:4,500 系列:PowerWise® PWM 型:控制器 輸出數(shù):1 頻率 - 最大:1MHz 占空比:95% 電源電壓:2.8 V ~ 5.5 V 降壓:是 升壓:無(wú) 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:無(wú) 工作溫度:-40°C ~ 125°C 封裝/外殼:6-WDFN 裸露焊盤(pán) 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱(chēng):LM1771SSDX |
| LTC1922EG-1#PBF | 功能描述:IC REG CTRLR ISO PWM 20-SSOP RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 特色產(chǎn)品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 標(biāo)準(zhǔn)包裝:1 系列:PowerWise® PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1MHz 占空比:81% 電源電壓:4.5 V ~ 18 V 降壓:是 升壓:無(wú) 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:無(wú) 工作溫度:-5°C ~ 125°C 封裝/外殼:32-WFQFN 裸露焊盤(pán) 包裝:Digi-Reel® 產(chǎn)品目錄頁(yè)面:1303 (CN2011-ZH PDF) 其它名稱(chēng):LM3754SQDKR |
| LTC1922EG-1#TR | 功能描述:IC REG CTRLR ISO PWM 20-SSOP RoHS:否 類(lèi)別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:4,500 系列:PowerWise® PWM 型:控制器 輸出數(shù):1 頻率 - 最大:1MHz 占空比:95% 電源電壓:2.8 V ~ 5.5 V 降壓:是 升壓:無(wú) 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:無(wú) 工作溫度:-40°C ~ 125°C 封裝/外殼:6-WDFN 裸露焊盤(pán) 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱(chēng):LM1771SSDX |
| LTC1922EG-1#TRPBF | 功能描述:IC REG CTRLR ISO PWM 20-SSOP RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:4,500 系列:PowerWise® PWM 型:控制器 輸出數(shù):1 頻率 - 最大:1MHz 占空比:95% 電源電壓:2.8 V ~ 5.5 V 降壓:是 升壓:無(wú) 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:無(wú) 工作溫度:-40°C ~ 125°C 封裝/外殼:6-WDFN 裸露焊盤(pán) 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱(chēng):LM1771SSDX |
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