Buck Controller/Converter

Products

PS1000 3A, 1.2MHz, 5.5V Synchronous Step-Down Converter

General Description The PS1000 is a high efficiency synchronous buck converter. Device integrates low RDS_ON MOSFETs for achieving high efficiency and output current is up to 3A. Input voltage ranges from 2.5V to 5.5V and reference voltage is 0.6V. The PS1000 adopts internally compensated constant-on-time (COT) control that provides very fast transient response with few external components. The PS1000 provides two operation mode. For light load high efficiency application, the PS1000A/C supports pulse-skipping mode (PSM). For good line/load regulation and low output ripple applications, the PS1000B/D supports forced continuous conduction mode (FCCM). In CCM operation, PS1000 remains in nearly constant switching frequency. The PS1000 provides an adjustable output voltage through an external resistor divider. An internal soft-start circuit limits the inrush current during startup. A power good indicator and enable control is built in the PS1000.  Device integrates protection including both FETs (HS/LS) cycle-by-cycle current limit, input under-voltage lockout (UVLO), output under-voltage (UVP), over-temperature protection (OTP) and output over-voltage protection (OVP). The PS1000 is available in WDFN2x2-8 and WDFN2x2-8S packages.

 

PS1007 3A, 1.2MHz, 5.5V Synchronous Step-Down Converter

General Description The PS1007 is a high efficiency synchronous buck converter. Device integrates low RDS_ON MOSFETs for achieving high efficiency and output current is up to 3A. Input voltage ranges from 2.5V to 5.5V and reference voltage is 0.6V. The PS1007 adopts internally compensated constant-on-time (COT) control that provides very fast transient response with few external components. The PS1007 provides two operation mode. For light load high efficiency application, the PS1007A/C supports pulse-skipping mode (PSM). For good line/load regulation and low output ripple applications, the PS1007B/D supports forced continuous conduction mode (FCCM). In CCM operation, PS1007 remains in nearly constant switching frequency. The PS1007 provides an adjustable output voltage through an external resistor divider. An internal soft-start circuit limits the inrush current during startup. A power good indicator and enable control is built in the PS1007. Device integrates protection including both FETs (HS/LS) cycle-by-cycle current limit, input under-voltage lockout (UVLO), output under-voltage (UVP), over-temperature protection (OTP) and output over-voltage protection (OVP). The PS1007 is available in WDFN2x2-8 and WDFN2x2-8S packages.

 
 

PS1210 4.5V to 23V Input, 10A Sync Step-Down Converter with 3.3V/5V LDOs

General Description The PS1210 series are cost-effective synchronous step-down DC-DC converters. The device achieves low power consumption with external pin selectable DEM/SDEM, respectively which could be beneficial for long battery life and avoid audio noise. V2COT-based architecture with current injection supports MLCCs output capacitors application without an external compensation network. The PS1210 provides open-drain Power Good indicator for power sequence control. The device integrates full protection features, including the cycleby-cycle OCP, OVP, UVP, input UVLO and OTP. The PS1210 is available in a UQFN-23L 3x3 (FC) package and is specified from -40°C to +85°C ambient temperature range.

 

PS1211 4.5V to 23V Input, 11A Sync Step-Down Converter with 3.3V/5V LDOs

General Description The PS1211 series are cost-effective synchronous step-down DC-DC converters. The device achieves low power consumption with external pin selectable DEM/SDEM, respectively which could be beneficial for long battery life and avoid audio noise. V2COT-based architecture with current injection supports MLCCs output capacitors application without an external compensation network. The PS1211 provides open-drain Power Good indicator for power sequence control. The device integrates full protection features, including the cycle-by-cycle  OCP, OVP, UVP, input UVLO and OTP. The PS1211 is available in a UQFN-23L 3x3 (FC) package and is specified from -40°C to +85°C ambient temperature range.

 

PS1213B 3.5V to 16V Input, 20A Sync Step-Down Converter

General Description The PS1213B is a high-power density, fully integrated synchronous buck converter. It works with wide input  voltage range and can support up to 20A continuous output current at defined conditions. LDO is integrated  internally, which is very suitable for single input supply condition. External bias is optional for maximizing the  efficiency. A differential sensing scheme and a 0.6V internal feedback reference voltage achieve ±1% output  voltage tolerance over full temperature range. The PS1213B provides excellent line and load regulation. The PS1213B uses Turbo Constant-On Time (TCOTTM) to control the algorithm with fast transient response.  Pure MLCC output capacitors can be used to save space and cost. The PS1213B has fully integrated protection features including OCP, NOCP, OVP, UVP and over temperature  protection (OTP). The PS1213B is available in a QFN 3mm x 4mm package with 21-Pin.

 

PS1216 4V to 16V Input, 6A Sync Step-Down Converter

General Description The PS1216 is a fully integrated, high-frequency, synchronous, step-down converter. It provides a very compact  solution that achieves up to 6A output current with excellent load and line regulation over wide input voltage  range. PS1216 has high working efficiency over its output current load range. PS1216 uses proprietary Turbo Constant-On-Time (TCOTTM) control with internal compensation to provide fast  transient response and simplified loop stability. The switching frequency can be easily set to 600kHz or 1.1MHz. The switching frequency of PS1216 remains  constant regardless of input and output voltages. The soft start process is controlled by an internal 1.4msec timer, which can be increased by adding a capacitor  from REF to GND. The open-drain power good (PGOOD) signal indicates whether the output is within its  nominal voltage range. When the input power fails to power the PS1216, PGOOD is clamped at about 0.7V by  an external pull-up voltage. PS1216 is equipped with full suites of protection functions which includes over-current protection (OCP), overvoltage protection (OVP), under-voltage protection (UVP), and over-temperature protection (OTP).

 

PS1500 2.7V to 28V Input, Synchronous Step-Down Controller

General Description PS1500 is a cost-effective, half-bridge gate driver with embedded bootstrap switch. Aimed for power supply solution of each computer fields. The device achieves ultra-low quiescent when system enters sleep mode and low power consumption with external pin selectable FCCM/SDEM, respectively which could be beneficial for long battery life in system stand-by mode and avoid audio noise. V2COT-based architecture with current injection supports MLCCs output capacitors application without external compensation network. The PS1500 operates with supply input voltage range from 2.7V to 28V and supports output voltages of 0.7V to 5V. The PS1500 is available in a QFN 3mm x 3mm package with 10-Pin.

 
 

PS1501 2.7V to 28V Input, Synchronous Step-Down Controller

General Description PS1501 is a cost-effective, dual synchronous step-down controller. Aimed for power supply solution of each computer fields. The device achieves ultra-low quiescent when system enters sleep mode and low power consumption with external pin selectable FCCM/SDEM, respectively which could be beneficial for long battery life in system stand-by mode and avoid audio noise. V2COT-based architecture with current injection supports MLCCs output capacitors application without external compensation network. The PS1501 operates with supply input voltage range from 2.7V to 28V and supports output voltages of 0.7V to 5V. The PS1501 is available in a QFN 3mm x 3mm package with 16-Pin.

 
 

PS1585 Ultra-Low Quiescent Dual Synchronous Step-Down Controller with 5V and 3.3V LDOs

General Description PS1585A/B is a cost-effective, dual synchronous step-down controller with 5V and 3.3V LDOs, aimed for system-power supply solution of each computer fields. The device could achieve ultra-low quiescent current when system enters sleep mode or low power consumption. The selectable DEM/SDEM could also be beneficial  for long battery life in system stand-by mode. During normal operation, an internal bypass switch is enabled in order to increase the efficiency of LDOs. V2COT-based architecture with current injection supports MLCCs output capacitors application without external compensation network. The PS1585A/B operates with supply input voltage range from 5V to 26.4V and supports output voltages of 5V and 3.3V. The PS1585A/B is available in a 20-pin 3x3 (mm) WQFN package and is specified from -40°C to +85°C ambient temperature range.