In accordance with personal data protection laws enforced by the European Union, we are committed to protecting your personal data and providing you with control over your personal data.
We have updated and will periodically update our Privacy Policy, to comply with the personal data protection. Please refer to our latest version of Privacy Policy。
This website uses cookies to provide a better browsing experience. To find out more about the cookies we use, pleas check here。
APW7391
Active
Dual Channel Synchronous Buck PWM Controller
Features
- Discontinuous Conduction Mode in Light Load to Increase Efficiency (VEN=2V)
- Sence External RSENSE (option 2)
General Description
The APW7391 is a dual channel voltage mode, synchronous PWM controller which drives dual N-channel MOSFETs. The device integrates monitoring and protection functions into a single package, provides two controlled power output with under-voltage and overcurrent protections. The APW7391 provides excellent regulation for output load variation. The internal 1.0V temperature-compensated reference voltage provides high accuracy of 0.8% over line and load regulation. The PWM switching frequency is adjustable from 50KHz to 350KHz. The APW7391 has been equipped with excellent protection functions: POR, IMON, OCP, SCP, UVP, OVP OTP. The Power-On-Reset (POR) circuit can monitor the VCC input voltage to make sure the supply voltage is valid. The APW7391 adopts either the external power inductor’s DCR or an external accurate sense resistor to sense the output current. The output current information is reported at IMON pin whose output voltage is proportional to output current. During the PWM switching, the APW7391 has OCP and SCP protections. When the load current exceeds the OCP or SCP threshold, the APW7391 shuts off its PWM switcher to prevent catastrophic failure caused by abnormal load or short-circuit. The APW7391 senses its FB pin for output UVP and OVP protection, which is 50% and 120% of reference voltage respectively. When the UVP or OVP occurs, the APW7391 latches off the PWM switcher. APW7391 has over temperature protection. When the die temperature is above 150°C, the APW7391 ceases PWM operation and recover normal operation when the die temperature drops by 40°C. The APW7391 is available in SSOP-24 and SSOP-24P packages, which is compliant with RoHS.
Features
- Single 12V Power Supply Required
- Excellent Output Voltage Regulation
- Simple Single Loop Control Design
- Programmable Frequency Range from 50kHz ~ 350kHz
- CCM/DCM Operation Selectable by EN Pin
- Discontinuous Conduction Mode in Light Load to Increase Efficiency (VEN=2V)
- Output Current Monitor (IMON pin)
- Integrated Soft-Start and Soft-Off
- Support Pre-Biased Power-On
- Output Power Line Compensation
- Phase Shift 180o
- Integrated Boot-Strap Diode
- Over-Current and Short-Circuit Protection
- Sence External RSENSE (option 2)
- 120% Over-Voltage Protection
- 50% Under-Voltage Protection
- Over-Temperature Protection
- Available in SSOP-24 and SSOP-24P Packages
General Description
The APW7391 is a dual channel voltage mode, synchronous PWM controller which drives dual N-channel MOSFETs. The device integrates monitoring and protection functions into a single package, provides two controlled power output with under-voltage and overcurrent protections. The APW7391 provides excellent regulation for output load variation. The internal 1.0V temperature-compensated reference voltage provides high accuracy of 0.8% over line and load regulation. The PWM switching frequency is adjustable from 50KHz to 350KHz. The APW7391 has been equipped with excellent protection functions: POR, IMON, OCP, SCP, UVP, OVP OTP. The Power-On-Reset (POR) circuit can monitor the VCC input voltage to make sure the supply voltage is valid. The APW7391 adopts either the external power inductor’s DCR or an external accurate sense resistor to sense the output current. The output current information is reported at IMON pin whose output voltage is proportional to output current. During the PWM switching, the APW7391 has OCP and SCP protections. When the load current exceeds the OCP or SCP threshold, the APW7391 shuts off its PWM switcher to prevent catastrophic failure caused by abnormal load or short-circuit. The APW7391 senses its FB pin for output UVP and OVP protection, which is 50% and 120% of reference voltage respectively. When the UVP or OVP occurs, the APW7391 latches off the PWM switcher. APW7391 has over temperature protection. When the die temperature is above 150°C, the APW7391 ceases PWM operation and recover normal operation when the die temperature drops by 40°C. The APW7391 is available in SSOP-24 and SSOP-24P packages, which is compliant with RoHS.
