The Next Step in DC/DC + Coil Integration
Improved Thermal Performance with Copper CoolPost Structure
Torex has incorporated Copper CoolPosts into the DFN3030-10B package to connect the Inductor directly to the PCB footprint through the package. In addition, the DC/DC die is mounted directly on to the large thermal pad and this significantly increases the thermal performance of the package and gives much better heat dissipation.
Low Radiated Noise
Below we compare the near magnetic field radiation generated by the XCL226B0K1H2 Micro DC/DC with CoolPost technology against the performance of our XC9264B75CER-G DC/DC with external coil.
Test conditions: VIN=12V, VOUT=3.3V, IOUT=100mA.
The XCL225/26 and XCL230/31 series also pass EN55022 (CISPR 22) CLASS B with good margin
Optimised for Space Constrained Applications
The required circuit area for the CoolPost Micro DC/DC family is significantly smaller than the equivalent external coil solution.
The space saving and simplified overall design makes the XCL family ideally suited for various applications such as Industrial IoT (Smart Factory), 4-20mA Current-Loop, HVAC and Building Control, Security & Home Automation, High Voltage LDO Replacement & Point of Load (12V & 24V Systems).
CoolPost Product Line Up
XCL225/26/30/31 (18V/36V Step-Down Micro DC/DC)
|P-Ch||0.99Ω (typ)||1.12Ω (typ)|
|N-Ch||0.69Ω (typ)||0.44Ω (typ)|
|Input Voltage Range||3.0V ~ 18V (Ab. Max 20V)||3.0V ~ 36V (Ab. Max 40V)|
|VIN Surge Voltage||-||46V ≤400ms|
|Output Voltage Range||1.0V ~ 15.0V||1.0V ~ 5.0V|
|Quiescent Current (typ.)||90μA||12.5μA||180μA||11.6μA|
|Max Duty Cycle||100%|
|Protection Circuits||Current Limit, Short Circuit,
UVLO, Thermal Shutdown
|Additional Features||Adjustable Soft-start|
|Power Good Output|
Typical Application Circuit & Package Construction
XCL226B0K1H2 Test Conditions: VIN = 12V, VOUT = 3.3V, IOUT = 0.2A
High Efficiency & Low Output Ripple
Standard EVBs Readily Available