 |
поискавой системы для электроныых деталей |
|
|
поискавой системы для электроныых деталей |
|
UCD3138ARMHT датащи(PDF) 23 Page - Texas Instruments |
|
|
|
|||||||||||||||||||||||||||||
UCD3138ARMHT датащи(HTML) 23 Page - Texas Instruments |
|
|
23 / 83 page  SR0_ DPWM SR1_ DPWM DTC0 DTC1 DETECT_ BLANK DETECT_ LEN DETECT DETECT DETECT DETECT ADJUST ADJUST 1 2 3 6 4 5 Thermal Pad (GND) CTRL DTC IN VD OUT VCC 1 2 3 6 4 5 Thermal Pad (GND) CTRL DTC IN VD OUT VCC UCD3138A DPWM module SR1 DPWM SR2 DPWM Decoder Dead Time Control Computation Engine DTC0 DTC1 Rising edge optimization control Rising edge optimization control SR1 SR2 UCD7138 UCD7138 UCD3138A www.ti.com SLUSC66B – MARCH 2015 – REVISED MAY 2015 5.8.1.8 Synchronous Rectifier Dead Time Optimization Peripheral The UCD3138A has an advanced dead time control interface where it can accept UCD7138 output signals and optimize SR gate driver signals accordingly. The UCD7138 low-side MOSFET driver is a high- performance driver for secondary-side synchronous rectification (SR) with body diode conduction sensing. The device is suitable for high power high efficiency isolated converter applications where dead-time optimization is desired. The UCD7138 gate driver is a companion device to UCD3138A highly integrated digital controller for isolated power. Figure 5-8. Synchronous Rectifier Peripheral use with Synchronous Rectifier Driver DTC0 and DTC1 are received body diode conduction inputs from UCD7138. SR0_DPWM and SR1_DPWM are the DPWM waveforms for the SRs. The red and green edges are moving edges controlled by both the filter output and the DTC interface. In each cycle, right after the falling edge of the SR DPWM waveform, a body diode conduction time detection window is generated. The detection window is defined by both DETECT_BLANK and DETECT_LEN registers. During this detection window, a 4-ns timer capture counts how long the body diode conducts. Then the DPWM turn off edge of the next cycle is adjusted accordingly. Figure 5-9. Timing Diagram of the DTC Interface Figure 5-10 shows how the turn off edge is adjusted based on the DTC measurement of the previous cycle. The A_ADJ and B_ADJ registers in DTCMONITOR are signed accumulators; default value is 0. Copyright © 2015, Texas Instruments Incorporated Specifications 23 Submit Documentation Feedback Product Folder Links: UCD3138A |
|
ссылки URL |
| Вашему бизинису помогли Аллдатащит? [ DONATE ] |
Что такое Аллдатащит | реклама | контакт | Конфиденциальность | Ссылка на техническое описание | обмен ссыками | поиск по производителю All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Russian ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
