DC-DC power chip is an electronic device that converts a direct current (DC) power supply to another direct current (DC) power supply. It operates based on the laws of electromagnetic induction and the control of switching circuits. Specifically, the DC-DC chip realizes the adjustment of the power supply voltage by controlling the conduction and disconnection of the switching tubes.

When the input voltage is applied to the switching tube, if the switching tube conducts, the current will flow through the inductor and the switching tube into the capacitor, which stores the electrical energy. When the switching tube is disconnected, the current in the inductor cannot instantly become zero, at which time the magnetic field in the inductor will collapse and the voltage at both ends of the inductor will rise sharply. By controlling the on and off time of the switching tube, the voltage of the power supply output can be adjusted.

DC-DC power supply chips have a variety of operating modes, the most common being pulse width modulation (PWM) mode. Specifically, when the output voltage is too high, the control circuit will reduce the on-time of the switching tube to reduce the output voltage; when the output voltage is too low, the control circuit will increase the on-time of the switching tube to increase the output voltage.

DC-DC power supply chips are used in a wide range of applications, including but not limited to mobile devices, automotive electronics, industrial control, smart home, new energy and medical equipment. In these fields, DC-DC power supply chips are used to provide stable power to meet the voltage and current requirements of various devices.

When selecting a DC-DC power supply chip, some key parameters need to be considered, such as the maximum output current, switching frequency, and load regulation ratio. Maximum output current is an important parameter for DC/DC devices, and the selection should refer to this parameter and keep a certain margin. The switching frequency determines the selection of the external inductor, the larger the frequency requires a relatively small value of inductance, to save the circuit board area. Load adjustment rate reflects the power supply load changes caused by the size of the output voltage change, the usual indicators for 3% -5%.

TI (Texas Instruments) DC-DC power supply chip original stock:

TPS5430DDAR

TPS54331DR

TPS563201DDCR

TLV62569DBVR

TLV61220DBVR

TPS5450DDAR

TPS61040DBVR

TPS60403DBVR

TL494CDR

TPS54360BDDAR

TPS562201DDCR

TPS54231DR

LMR14030SDDAR

ADI (ADI) DC-DC power supply chip original stock:

ADP2301AUJZ-R7

ICL7660CSA+T

LTM4622IY#PBF

ICL7662CBA+T

LT1054IS8#PBF

MAX17504ATP+T

ADM660ARZ-REEL7

LT8610EMSE#TRPBF

MAX828EUK+T

LT1615IS5#TRPBF

LTC3260EMSE#PBF

LTC3261EMSE#PBF

LTC1871EMS#PBF

ADP5052ACPZ-R7

ADUM5028-5BRIZ

LTM4625IY#PBF

LT8302IS8E#PBF

LTC3604IUD#PBF

LT8609AIMSE#PBF

LTC7138EMSE#PBF

ADUM5010ARSZ

ADP2302ARDZ-5.0

LT8582EDKD#PBF

silergy(Silergy) DC-DC power supply chip original stock:

SY8089A1AAC

SY8088IAAC

SY8089AAAC

SY8291ABC

SY8120IABC

SY8088AAC

SY8113BADC

SY8301ABC

SY8205FCC

SYR837PKC

SM8102ABC

SY8303AIC

SM8082AAAC

SY8032EABC

SY8502FCC

SY7208ABC

SY8204FCC

SY8366HQQC

SGMICRO(SGMICRO) DC-DC power supply chip original stock: