The TPS55289 is a synchronous buck-boost
converter that is optimized for converting battery voltage or adapter voltage into power
supply rails. The TPS55289 integrates four MOSFET switches, providing a compact solution for
USB power delivery (USB PD) application.
The TPS55289 has up to 30-V input voltage
capability. Through the I2C interface, the output voltage of the TPS55289 can be
programmed from 0.8 V to 22 V with 10-mV step. When working in boost mode, the device can
deliver 60 W from 12-V input voltage. It is capable of delivering 45 W from 9-V input
voltage.
The TPS55289 employs an average current-mode
control scheme. The switching frequency is programmable from 200 kHz to 2.2 MHz by an
external resistor and can be synchronized to an external clock. The TPS55289 also provides
optional spread spectrum to minimize peak EMI.
The TPS55289 offers output overvoltage
protection, average inductor current limit, cycle-by-cycle peak current limit, and output
short circuit protection. The TPS55289 also makes sure it safely operates with optional
output current limit and hiccup-mode protection in sustained overload conditions.
The TPS55289 can use a small inductor and
small capacitors with high switching frequency. It is available in a 3.0-mm × 5.0-mm QFN
package.
The TPS55289 is a synchronous buck-boost
converter that is optimized for converting battery voltage or adapter voltage into power
supply rails. The TPS55289 integrates four MOSFET switches, providing a compact solution for
USB power delivery (USB PD) application.
The TPS55289 has up to 30-V input voltage
capability. Through the I2C interface, the output voltage of the TPS55289 can be
programmed from 0.8 V to 22 V with 10-mV step. When working in boost mode, the device can
deliver 60 W from 12-V input voltage. It is capable of delivering 45 W from 9-V input
voltage.
The TPS55289 employs an average current-mode
control scheme. The switching frequency is programmable from 200 kHz to 2.2 MHz by an
external resistor and can be synchronized to an external clock. The TPS55289 also provides
optional spread spectrum to minimize peak EMI.
The TPS55289 offers output overvoltage
protection, average inductor current limit, cycle-by-cycle peak current limit, and output
short circuit protection. The TPS55289 also makes sure it safely operates with optional
output current limit and hiccup-mode protection in sustained overload conditions.
The TPS55289 can use a small inductor and
small capacitors with high switching frequency. It is available in a 3.0-mm × 5.0-mm QFN
package.