Datenblatt-Suchmaschine für elektronische Bauteile |
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TC7660COATR Datenblatt(PDF) 6 Page - Microchip Technology |
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TC7660COATR Datenblatt(HTML) 6 Page - Microchip Technology |
6 / 18 page TCM680 DS21486C-page 6 © 2005 Microchip Technology Inc. 4.0 DETAILED DESCRIPTION 4.1 VOUT - Charge Storage - Phase 1 The positive side of capacitors C1 and C2 are con- nected to +5V at the start of this phase. C1 + is then switched to ground and the charge in C1 – is transferred to C2 –. Since C 2 + is connected to +5V, the voltage potential across capacitor C2 is now 10V. FIGURE 4-1: Charge Pump - Phase 1. 4.2 VOUT - Transfer - Phase 2 Phase two of the clock connects the negative terminal of C2 to the VOUT - storage capacitor C 3 and the positive terminal of C2 to ground, transferring the generated -10V to C3. Simultaneously, the positive side of capac- itor C1 is switched to +5V and the negative side is connected to ground. FIGURE 4-2: Charge Pump - Phase 2. 4.3 VOUT + Charge Storage - Phase 3 The third phase of the clock is identical to the first phase – the charge stored in C1 produces -5V in the negative terminal of C1, which is applied to the negative side of capacitor C2. Since C2 + is at +5V, the voltage potential across C2 is 10V. FIGURE 4-3: Charge Pump - Phase 3. 4.4 VOUT + Transfer - Phase 4 The fourth phase of the clock connects the negative terminal of C2 to ground and transfers the generated 10V across C2 to C4, the VOUT + storage capacitor. Simultaneously, the positive side of capacitor C1 is switched to +5V and the negative side is connected to ground, and the cycle begins again. FIGURE 4-4: Charge Pump - Phase 4. VOUT - VOUT + -5V SW4 SW1 SW2 SW3 C4 + – + + – – + – VIN = +5V C2 C3 C1 VOUT - VOUT + -5V SW4 SW1 SW2 SW3 C4 + – + + – – + – +5V C2 C3 C1 -10V VOUT - VOUT + -5V SW4 SW1 SW2 SW3 C4 + – + + – – + – VIN = +5V C2 C3 C1 -10V VOUT - VOUT + -5V SW4 SW1 SW2 SW3 C4 + – + + – – + – +5V C2 C3 C1 |
Ähnliche Teilenummer - TC7660COATR |
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Ähnliche Beschreibung - TC7660COATR |
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