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APW7393
Active
-1A, -12V Inverting Converter With PSM Mode
Features
- Under Voltage Protection and Hiccup mode
- Current Limited
- Over Temperature Protection
- BST to SW POR function
General Description
APW7393 is an inverting Buck-Boost converter. Integrated 70mΩ high side and 60mΩ low side power MOSFET. Can generating a negative output voltage and provides an output current up to -1A. The APW7393 is equipped with an automatic PSM/PWM mode operation when MODE pin connecting to VOUT pin. At light load, the IC operates in the PSM mode to reduce the switching losses. At heavy load, APW7393 works in PWM mode with a fixed switching frequency of 500kHz. If MODE pin connecting to VIN pin, converter working in force PWM mode. Built-in EN function reference voltage, can simplify enable function in inverting converter application. Give a voltage more than 2V on EN to GND pin, IC VOUT will turn on with soft-start function. The APW7393 is also equipped with Power-on-reset, soft start, enable/disable and whole protections (over-voltage, hiccup mode, over-temperature and current-limit) into a single package.
Features
- Operating input voltage range 9V to 14V
- Output current up to -1A
- Reference voltage: 0.8V
- Efficiency up to 90% at -1A Loading
- Current mode with PSM for Fast Response and higher Efficiency
- Fixed 500kHz switching Frequency
- Protections:
- Under Voltage Protection and Hiccup mode
- Current Limited
- Over Temperature Protection
- BST to SW POR function
- Internal Soft-Start
General Description
APW7393 is an inverting Buck-Boost converter. Integrated 70mΩ high side and 60mΩ low side power MOSFET. Can generating a negative output voltage and provides an output current up to -1A. The APW7393 is equipped with an automatic PSM/PWM mode operation when MODE pin connecting to VOUT pin. At light load, the IC operates in the PSM mode to reduce the switching losses. At heavy load, APW7393 works in PWM mode with a fixed switching frequency of 500kHz. If MODE pin connecting to VIN pin, converter working in force PWM mode. Built-in EN function reference voltage, can simplify enable function in inverting converter application. Give a voltage more than 2V on EN to GND pin, IC VOUT will turn on with soft-start function. The APW7393 is also equipped with Power-on-reset, soft start, enable/disable and whole protections (over-voltage, hiccup mode, over-temperature and current-limit) into a single package.
