In order to meet the expanded use, the company has launched an XCL220 and XCL222 series of working temperatures to TA = 105 ° C. High-speed transient response is achieved by using new control technology (Hisat-Cot); the output current is increased by reducing the on-resistance of the internal transistor. The XCL220 and XCL222 series products are compatible with early "MicrodC / DC" converter XCL202 and XCL206 series products, and do not need to change the layout of the PCB board, which is easy to use.
Product specifications
1-1 Performance Comparison of XCL202 and XCL222
XCL202
XCL222
Oscillation Frequency
1.2MHz
Control Method
PWM / PFM Automatic
Hi-Sat CotPWM / PFM Automatic
INPUT VOLTAGE RANGE
2.0V ~ 6.0V
2.5V ~ 5.5V
Output Current
400mA
500mA
Output Voltage Range
0.8V ~ 4.0V
0.8V ~ 3.6V
Operating Ambient Temperature
-40 ° C ~ + 85 ° C
-40 ° C ~ + 105 ° C
LX SW "H" on Resistance
0.35Ω
0.24Ω
LX SW "L" on Resistance
0.45Ω
0.16Ω
1-2 Performance Comparison of XCL206 and XCL220
XCL206
XCL220
Oscillation Frequency
3.0MHz
Control Method
PWM / PFM Automatic
Hi-Sat CotPWM / PFM Automatic
INPUT VOLTAGE RANGE
2.0V ~ 6.0V
2.5V ~ 5.5V
Output Current
600mA
1000mA
Output Voltage Range
0.8V ~ 4.0V
0.8V ~ 3.6V
Operating Ambient Temperature
-40 ° C ~ + 85 ° C
-40 ° C ~ + 105 ° C
LX SW "H" on Resistance
0.35Ω
0.24Ω
LX SW "L" on Resistance
0.45Ω
0.16Ω
2. Conversion efficiency
2-1 Efficiency of XCL202 and XCL222
Iout
XCL202
XCL222
0.1mA
68.3%
71.7%
1ma
84.9%
87.8%
10mA
86.8%
89.8%
100mA
87.8%
91.5%
200ma
85.8%
90.9%
300mA
82.5%
88.6%
400mA
78.9%
85.8%
500mA
-
83.5%
Condition: VIN = 3.6V, Vout = 1.8V
The XCL222 series of products achieve efficiency from light load to heavy load compared to the XCL202 series of products. By reducing the on-resistance of the inner transistor, the efficiency is greatly improved at IOUT = 50 mA, and the heat is reduced by itself to increase the output current.
2-2 Efficiency of XCL206 and XCL220
Iout
XCL206
XCL220
0.1mA
59.2%
63.8%
1mA
82.2%
85.1%
10mA
85.5%
88.2%
100mA
86.1%
88.6%
200ma
84.4%
90.0%
300mA
82.2%
89.1%
600mA
74.3%
85.5%
1000mA
-
77.6%
Condition: VIN = 3.6V, Vout = 1.8V
The XCL220 series is achieved with the XCL206 series of products to improve efficiency from light load to heavy load. By changing the inductance value of the coil to 1.0 μH, loss of DCR (equivalent series resistance), etc., by reducing the on-resistance of the internal transistor, the efficiency is improved at IOUT = 100 mA, and the heat is lowered. A increased output current.
3. Load transient response
3-1 Comparison of XCL202B181CR-G and XCL222B181ER-G Load Transient Response
Test conditions: VIN = 5.0V, Vout = 1.8V, IOUT = 0.1mA⇔300mA
1) XCL202B181ER-G, CIN = 4.7μF, CL = 10μF
2) XCL222B181ER-G, CIN = 4.7μF, CL = 10μF
From the waveform of VOUT, it can be observed that the XCL222 series products achieve high-speed load transient response by adopting Hisat-COT control technology. Read all text, original title: High performance "Microdc / DC" converter, understand!
Article Source: [Micro Signal: GH_454737165C13, WeChat public number: Torex Product Information] Welcome to add attention! Please indicate the source of the article.
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