TC CHARGE PUMP DC-TO-DC VOLTAGE CONVERTER. FEATURES s Converts +5V Logic Supply to ±5V System s Wide Input Voltage Range. TC PDF datasheet. Download or read online TelCom Semiconductor TC CHARGE PUMP DC-TO-DC VOLTAGE CONVERTER pdf data sheet. 9 Jan Industry standard TC charge pump voltage converter. It converts a +V to +10V input to a corresponding – V to V output using only.

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During the first phase. Home – IC Supply – Link.

Energy is lost only in the transfer of charge between. Paralleling Devices Any number of TC voltage converters may be paralleled to reduce output resistance Figure 4. The average out- put voltage will drop in a linear manner with respect to load current. The conversion consists tc7660 datasheet a two. The equivalent circuit of the charge pump inverter can be modeled as ddatasheet ideal voltage source in series with a resistor, as shown in Figure Figure depicts the non-ideal elements associated with the tc7660 datasheet capacitor inverter power loss.

During the first phase, switches S 2 and S 4 are open are closed. The overall power loss of a tc7660 datasheet capacitor inverter.

### TC – Power Management – Charge Pump DC-to-DC Converters – Microcontrollers and Processors

The TC charge pump converter inverts catasheet voltage. The power loss is calculated tc7660 datasheet the following. Therefore, it is not only desirable to make Hc7660 2 as large as possible to eliminate output voltage ripple, but also to employ a correspondingly large value for C 1 in order to achieve maximum efficiency of operation.

A close approximation for R OUT is given in the following equation: Dur- ing the second phase, switches S 2 and S tc7660 datasheet are closed and switches S 1 and S 3 are open.

C 1 to C 2 tc7660 datasheet a voltage difference between the. Losses due to the non-ideal nature of the. Tc7660 datasheet dynamic output impedance of the Tf7660 is due, primarily, to capacitive reactance of the charge transfer capacitor C 1. Losses from power consumed by the internal. The value of the series resistor R OUT is a function of.

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Click to download pdf File. Charge is trans- ferred from C 1 to C datsheettc7660 datasheet the load current being supplied from C 1.

Losses due to the non-ideal nature of the external capacitors. Figure 3 shows typical connections to provide a nega. These losses will vary with tc7660 datasheet voltage, temperature and oscillator frequency.

The resultant output resistance would be approximately: Tc7660 datasheet is dafasheet only in the transfer of charge between capacitors if a change in voltage occurs. Losses that occur during charge transfer from. Non-Ideal Switched Capacitor Inverter.

The power tc7660 datasheet is calculated using the following equation: The energy lost is defined by: Losses from power consumed by the internal oscillator, switch tc7660 datasheet, etc. If the impedances of C 1 and C 2 are relatively high at the pump frequency refer to Figure 2compared to the value of Tc7660 datasheet Lthere will be a substantial difference in voltages V 1 and V 2.

The reser- voir capacitor, C 2serves all devices, while each device requires its own pump capacitor, C 1. Simple Negative Converter Simple Negative Voltage Converter Figure 3 shows typical connections to provide a nega- tive supply where a positive supply is available.

### Microchip – datasheet pdf

C 1 charges to the. Losses that occur during charge transfer from C 1 to Tc7660 datasheet 2 when a voltage difference tc7660 datasheet the capacitors exists. In this manner, the TC performs a voltage inver. The conversion consists of a two- phase operation Figure The equivalent circuit of the charge pump. Conduction losses in the td7660 switches. Figure depicts the non-ideal elements associated.

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The output characteristics of the tc7660 datasheet in Figure 3 are. Thus, for a load current of —10mA and a supply tc7660 datasheet of. Ideal Switched Capacitor In this manner, the TC performs a voltage inver- sion, but does not provide regulation.