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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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2STR1215 数据表(PDF) 10 Page - STMicroelectronics |
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2STR1215 数据表(HTML) 10 Page - STMicroelectronics |
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10 / 56 page  Figure 5. Block diagram VIN SW FB PGND Power HS NMOS Power LS NMOS Sense HS NMOS High side driver Error Amplifier O.V.P. COMP E.A. ref FB O.V.P. Threshold Sense LS NMOS Low side driver Valley O.C.P. COMP Zero cross COMP Current sensing Current sensing Z.C. Threshold O.C.P. Valley threshold + Slope compensation PWM COMP PWM management FSW reading circuit Internal Oscillator FSW PGOOD PGOOD COMP PGOOD Th FB EN/CLKIN(*) External synchronization Wake UP Threshold Wake UP COMP BOOT LDOs VINLDO VCC Soft start VBIAS Boot driver Compensation network E.P., AGND Skip COMP Skip. Threshold Ineg. Threshol.d Negative curr. COMP Thermal protection EN Threshold EN COMP 5.1.1 Enable The EN pin is a digital input that turns the device on or off. In order to maximize both the EN threshold accuracy and the current consumption, the device implements two different thresholds: 1. The Wake-up threshold, VWAKE_UP = 0.5 V (see Section 4 Electrical characteristics). 2. The Start-up threshold, VEN = 1.2 V (see Section 4 Electrical characteristics.) The following image shows the device behavior. L6983I Primary side DS14040 - Rev 1 page 10/56 |
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