The TPS6103x devices provide a power supply solution for products powered by either a
one-cell Li-Ion or Li-polymer, or a two to three-cell alkaline, NiCd or NiMH battery. The converter
generates a stable output voltage that is either adjusted by an external resistor divider or fixed
internally on the chip. It provides high efficient power conversion and is capable of delivering
output currents up to 1 A at 5 V at a supply voltage down to 1.8 V. The implemented boost converter
is based on a fixed frequency, pulse-width- modulation (PWM) controller using a synchronous
rectifier to obtain maximum efficiency. At low load currents the converter enters Power Save mode
to maintain a high efficiency over a wide load current range. The Power Save mode can be disabled,
forcing the converter to operate at a fixed switching frequency. It can also operate synchronized
to an external clock signal that is applied to the SYNC pin. The maximum peak current in the boost
switch is limited to a value of 4500 mA.
The converter can be disabled to minimize battery drain. During shutdown, the load is
completely disconnected from the battery. A low-EMI mode is implemented to reduce ringing and, in
effect, lower radiated electromagnetic energy when the converter enters the discontinuous
conduction mode.
The TPS6103x devices provide a power supply solution for products powered by either a
one-cell Li-Ion or Li-polymer, or a two to three-cell alkaline, NiCd or NiMH battery. The converter
generates a stable output voltage that is either adjusted by an external resistor divider or fixed
internally on the chip. It provides high efficient power conversion and is capable of delivering
output currents up to 1 A at 5 V at a supply voltage down to 1.8 V. The implemented boost converter
is based on a fixed frequency, pulse-width- modulation (PWM) controller using a synchronous
rectifier to obtain maximum efficiency. At low load currents the converter enters Power Save mode
to maintain a high efficiency over a wide load current range. The Power Save mode can be disabled,
forcing the converter to operate at a fixed switching frequency. It can also operate synchronized
to an external clock signal that is applied to the SYNC pin. The maximum peak current in the boost
switch is limited to a value of 4500 mA.
The converter can be disabled to minimize battery drain. During shutdown, the load is
completely disconnected from the battery. A low-EMI mode is implemented to reduce ringing and, in
effect, lower radiated electromagnetic energy when the converter enters the discontinuous
conduction mode.