LM25122QPWPRQ1 HTSSOP-20-EP DC-DC control chip TI original stock
explain
LM25122 is a synchronous boost controller that supports multiple phases and is designed for efficient synchronous boost voltage regulator applications. This control method is based on peak current mode control. Current mode control can provide internal line feedforward, cycle by cycle current limitation, and simplified loop compensation.
The maximum switching frequency can be programmed to 600kHz. Achieve higher efficiency through two robust and durable N-channel metal oxide semiconductor field-effect transistor (MOSFET) gate drivers that support adaptive dead time control. A user selectable diode simulation mode can also achieve intermittent mode operation to improve efficiency under light loads.
An internal charge pump can achieve 100% duty cycle (bypass operation) for the high side synchronous switch. A 180 º phase shift clock output can achieve simple multi-phase cross configuration. Other functions include thermal shutdown, frequency synchronization, intermittent mode current limiting, and adjustable line undervoltage locking.
characteristic
• Complies with AEC-Q100 Level 1 standard (TA=-40 ° C to 125 ° C)
Maximum input voltage: 42V
Minimum input voltage: 3V (4.5V at startup)
• Output voltage up to 50V
• Bypass (VOUT=VIN) operation
1.2V reference with an accuracy of ± 1.0%
Free operation and synchronous switching frequency up to 600 kHz
Peak current mode control
Robust and durable 3A integrated gate driver
Adaptive dead time control
Optional diode simulation mode
Programmable cycle by cycle current limitation
Intermittent mode overload protection
Programmable Line Under Voltage Lockout (UVLO)
Programmable soft start
• Thermal shutdown protection
Low shutdown static current: 9 μ A
Programmable slope compensation
Programmable cycle hopping mode reduces standby power consumption
Allow the use of external VCC power supply
Inductor distributed DC resistance (DCR) current sensing function
• Multi phase function
Heat resistant and enhanced 20 pin heat dissipation thin small size package
(HTSSOP)
application
• 12V, 24V, and 48V power supply systems
• Car start and stop
• Audio power supply
LM25122 is a synchronous boost controller that supports multiple phases and is designed for efficient synchronous boost voltage regulator applications. This control method is based on peak current mode control. Current mode control can provide internal line feedforward, cycle by cycle current limitation, and simplified loop compensation.
The maximum switching frequency can be programmed to 600kHz. Achieve higher efficiency through two robust and durable N-channel metal oxide semiconductor field-effect transistor (MOSFET) gate drivers that support adaptive dead time control. A user selectable diode simulation mode can also achieve intermittent mode operation to improve efficiency under light loads.
An internal charge pump can achieve 100% duty cycle (bypass operation) for the high side synchronous switch. A 180 º phase shift clock output can achieve simple multi-phase cross configuration. Other functions include thermal shutdown, frequency synchronization, intermittent mode current limiting, and adjustable line undervoltage locking.
characteristic
• Complies with AEC-Q100 Level 1 standard (TA=-40 ° C to 125 ° C)
Maximum input voltage: 42V
Minimum input voltage: 3V (4.5V at startup)
• Output voltage up to 50V
• Bypass (VOUT=VIN) operation
1.2V reference with an accuracy of ± 1.0%
Free operation and synchronous switching frequency up to 600 kHz
Peak current mode control
Robust and durable 3A integrated gate driver
Adaptive dead time control
Optional diode simulation mode
Programmable cycle by cycle current limitation
Intermittent mode overload protection
Programmable Line Under Voltage Lockout (UVLO)
Programmable soft start
• Thermal shutdown protection
Low shutdown static current: 9 μ A
Programmable slope compensation
Programmable cycle hopping mode reduces standby power consumption
Allow the use of external VCC power supply
Inductor distributed DC resistance (DCR) current sensing function
• Multi phase function
Heat resistant and enhanced 20 pin heat dissipation thin small size package
(HTSSOP)
application
• 12V, 24V, and 48V power supply systems
• Car start and stop
• Audio power supply
High current boost power supply
