microdcdc

MICRO DC/DC SOLUTIONS

Synchronous DC/DC Converters with Integrated Coil

 

 

One Concept - Four Solutions

Torex offer MICRO DC/DC with four different internal constructions. Each one has advantages, so you can choose the one that best fits your application. Please see the table below.

  Packaged DC/DC
Embedded into coil
DC/DC chip on top of coil DC/DC chip beside coil DC/DC package below coil
Packaging Style

2.5 x 2.0 x 1.0mm

 

2.5 x 2.15 x 1.05mm

 

2.25 x 1.5 x 0.75mm

 

3.2 x 2.5 x 1.0mm

4.7 x 3.1 x 1.35mm

3.0 x 3.0 x 1.7mm

 

Construction          
Series XCL101, XCL201/02, XCL205/06/07,
XCL210, XCL219/20, XCL221/22
 XCL208/09  XCL223/24  XCL211/12, XCL213/14  XCL225/26, XCL230/31
Coil The coil lies flat on the IC package.
This shortens the path of the switching
current and minimizes noise.
Lowest cost as very standard coil can be used. Special wire bonding for ultra-low profile. The IC and coil have good heat
dissipation, so large currents can be used.
New construction for mid-voltage products.

 

CoolPost – The Next Step in DC/DC + Coil Integration!

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.

For more information on the benefits of CoolPost technology please click here

 

Low EMI / Radiated Noise

Another benefit for Torex MICRO DC/DC is much lower radiated noise and near magnetic field strength compared with a normal DC/DC with an external coil. The data below compares the near magnetic field radiation performance for the different packaging options. When the IC is embedded with integrated coil, we see much lower emissions as illustrated here with the XC9264 Vs XCL226, but all MICRO DC/DC generate considerably less radiated noise compared to the traditional topology of DC/DC + separate inductor.

 

 

The XCL225/26 and XCL230/31 series also pass EN55022 (CISPR 22) CLASS B with good margin

 

The Line-up

Low Voltage Buck Micro DC/DC for Output Currents up to 600mA

Specification Series XCL210 XCL201/02 XCL208/09 XCL221/222 XCL205/06/07
Configuration BUCK
Output Current 50mA / 200mA 400mA 400mA 500mA 600mA

ON Resistance (Typ.)

N-Ch 0.40Ω 0.52Ω 0.52Ω 0.24Ω 0.52Ω
P-Ch 0.40Ω 0.42Ω 0.42Ω 0.16Ω 0.42Ω
Input Voltage Range 2.0V ~ 6.0V 2.0V ~ 6.0V 1.8V ~ 6.0V 2.5V ~ 5.5V 1.8V ~ 6.0V
Output
Voltage
Fixed 1.0V ~ 4.0V 0.8V ~ 4.0V 0.8V ~ 4.0V 0.8V ~ 3.6V 0.8V ~ 4.0V
Adjustable - - 0.8V ~ VIN - 0.8V ~ VIN
Switching Frequency PFM 1.2MHz 3.0MHz 1.2MHz 3.0MHz
Quiescent Current 0.5μA 15μA 21μA 15μA 21μA
Protection
Circuits
Current Limit YES YES YES YES YES
Short Circuit YES - - YES -
Inrush Current - - - YES -
Product
Select
Fixed PWM - XCL201 XCL208 XCL221 XCL205
PWC/PFM Auto - XCL202 XCL209 XCL222 XCL206
PWM/PFM + Mode - - - - XCL207
Fixed PFM  XCL210 - - - -
Additional
Features
Soft-start - YES YES YES YES
UVLO YES YES YES YES YES
CL Auto Discharge YES YES YES YES YES
 Others - - - Constant On Time -
Internal Inductor Value 8.0μH 4.7μH 1.5μH 4.7μH 1.5μH
Inductor Options Multilayer Multilayer Multilayer Multilayer Multilayer
Package CL-2025-02  CL-2025-02 USP-10B03 CL-2025-02 CL-2025-02
Dimensions (mm) 2.0 x 2.5 x 1.0 2.0 x 2.5 x 1.0 2.15 x 2.5 x 1.05 2.0 x 2.5 x 1.0 2.0 x 2.5 x 1.0
Operating Temperature Range -40 °C ~ +85 °C -40 °C ~ +85 °C -40 °C ~ +85 °C -40 °C ~ +105 °C -40 °C ~ +85 °C
Product Page XCL210 XCL201/02 XCL208/09 XCL221/222 XCL205/06/07

 

Low Voltage Buck Micro DC/DC for Output Currents from 700mA

Specification Series XCL223/24 XCL219/20 XCL213/14

XDL601/02

XCL211/12

Configuration BUCK
Output current 700mA 1.0A 1.5A 1.5A 2.0A

ON Resistance (Typ.)

N-Ch 0.14Ω 0.24Ω 0.10Ω 0.10Ω 0.12Ω
P-Ch 0.10Ω 0.16Ω 0.14Ω 0.14Ω 0.11Ω
Input Voltage Range 2.5V ~ 5.5V 2.5V ~ 5.5V 2.7V ~ 5.5V 2.5V ~ 5.5V 2.7V ~ 6.0V
Output Voltage Fixed 0.8V ~ 3.6V 0.8V ~ 3.6V 0.8V ~ 3.6V 0.8V ~ 3.3V -
Adjustable - - - - 0.9V~ VIN
Switching Frequency 3.0MHz 3.0MHz 3.0MHz 3.0MHz 2.4MHz
Quiescent Current 25μA 25μA 25μA 25μA 53μA
Product Circuits Current Limit YES YES YES YES YES
Short Circuit YES YES YES YES -
Thermal Shutdown YES YES YES YES YES
Product Select Fixed PWM XCL223 XCL219 XCL213 XDL601 XCL211
PWM/PFM Auto XCL224 XCL220 XCL214 XDL602 XCL212
Additional Features
 
Soft-start YES YES YES YES -
UVLO YES YES YES YES YES
CL Auto Discharge YES YES YES YES YES
Others Constant On-Time -
Internal Inductor Value 0.47μH 1.0μH 0.5μH 0.5μH 1.5μH
Inductor Options Multilayer Multilayer Multilayer Multilayer Multilayer
Package USP-8B04 CL-2025-02 USP-9B01 DFN3625-11B USP-11B01
Dimensions (mm) 2.25 x 1.5 x 0.75 2.0 x 2.5 x 1.0 3.2 x 2.5 x 1.0 3.6 x 2.5 x 1.6 3.1 x 4.7 x 1.3
Operating Temperature Range -40 °C ~ +105 °C -40 °C ~ +105 °C -40 °C ~ +105 °C -40 °C ~ +105 °C -40 °C ~ +85 °C
Automotive AEC-Q100 compliant - - - Grade 2 -
Package Page XCL223/24 XCL219/20 XCL213/14 XDL601/02 XCL211/12

 

Mid Voltage Micro DC/DC

Specification Series

XCL225/26

XCL230/31 XDL603/04

XDL605/06

Configuration BUCK
Output current 500mA 600mA 500mA 600mA

ON Resistance (Typ.)

N-Ch 0.73Ω 0.6Ω 0.64Ω 0.6Ω
P-Ch 0.99Ω 1.2Ω 0.99Ω 1.2Ω
Input Voltage Range 3.0V ~ 18V 3V ~ 36V 3.0V ~ 18V 3V ~ 36V
Output Voltage Fixed - - - -
Adjustable 0.75V ~ 15V 1.0V ~ 5.0V 0.75V ~ 15V 1.8V ~ 5.0V
Switching Frequency 1.2MHz 1.2MHz 2.2MHz 2.2MHz
Quiescent Current 12.5μA 12.5μA 13.5μA 13.5μA
Product Circuits Current Limit YES YES YES YES
Short Circuit - YES - YES
Inrush Current - - - -
Product Select Fixed PWM XCL225 XCL230 XCL225 XDL605
PWM/PFM Auto XCL226 XCL231 XCL226 XDL606
Additional Features
 
Soft-start YES YES YES YES
UVLO YES YES YES YES
CL Auto Discharge YES - YES -
Others Power Good Power Good Power Good Power Good
Internal Inductor Value 4.3μH 4.7μH - -
Inductor Options Multilayer Multilayer Multilayer Multilayer
Package DFN3030-10B DFN3030-10B DFN3625-11A DFN3625-11B
Dimensions (mm) 3.0 x 3.0 x 1.7 3.0 x 3.0 x 1.7 - -
Operating Temperature Range -40 °C ~ +105 °C -40 °C ~ +105 °C -40 °C ~ +105 °C -40 °C ~ +105 °C
Automotive AEC-Q100 compliant  - - Grade 2 Grade 2
Package Page XCL225/26 XCL230/31 XDL603/04 XDL605/06

 

 

Boost Micro DC/DC and Inverting Micro DC/DC

Specification Series

XCL101

XCL102/03 XCL301

XCL303/04

Configuration BOOST INVERTING
Output current More than 100mA Up to 500mA -50mA -300mA

ON Resistance (Typ.)

N-Ch 0.6Ω 0.3Ω 1.3Ω 0.5Ω
P-Ch 0.65Ω 0.3Ω - -
Input Voltage Range 0.7V ~ 5.5V 0.65V ~ 6.0V 2.7V ~ 5.5V 2.7V ~ 5.5V
Output Voltage Fixed 1.8V ~5.0V 2.2V ~ 5.5V -3.3V -
Adjustable - - - -1.2V ~ -6.0V
Switching Frequency 1.2MHz 3.0MHz - 2.5MHz
Quiescent Current 6.3μA 26μA 40μA 250μA
Product Circuits Current Limit - YES YES YES
Short Circuit - YES - -
Thermal Shutdown - - - -
Product Select Fixed PWM - XCL102 - XCL303
PWM/PFM Auto - XCL103 XCL301 XCL304
Fixed PFM XCL101 - - -
Additional Features Soft-start YES YES YES YES
UVLO YES - YES YES
CL Auto Discharge - YES YES -
Others Load Disconnect Load Disconnect - -
Input Bypass Mode Input Bypass Mode - -
Internal Inductor Value 4.7μH 1.5μH 4.7μH 2.2μH
Inductor Options Multilayer Multilayer Multilayer Multilayer
Package CL-2025-02 CL-2025-02 CL-2025-02 CL-2025-02
Dimensions (mm) 2.0 x 2.5 x 1.0 2.0 x 2.5 x 1.0 2.0 x 2.5 x 1.0 2.0 x 2.5 x 1.0
Operating Temperature Range -40 °C ~ +85 °C -40 °C ~ +85 °C -40 °C ~ +85 °C -40 °C ~ +105 °C
Package Page XCL101 XCL102/03 XCL301 XCL303/04

 

Need to know more?

Download Technical Information Paper Here