SLWSTK6020A Datasheet, PDF (49/102 Pages) Silicon Laboratories – EFR32BG1 Blue Gecko Bluetooth® Smart SoC Family Data Sheet

4.2 Typical Performance Curves
EFR32BG1 Blue Gecko Bluetooth® Smart SoCFamily Data Sheet
Electrical Specifications
Default test conditions: CCM mode, LDCDC = 4.7 μH, CDCDC = 1.0 μF, VDCDC_I = 3.3 V, VDCDC_O = 1.8 V, FDCDC_LN = 8 MHz
100
90
80
70
60
50
40
0
10
2
1.5
1
0.5
Efficiency VS Load Current, LN mode
Efficiency VS Load current, LP mode
100
90
80
70
1
10
Load,mA
Heavy Drive
Medium Drive
Light Drive
2
10
Ron VS supply voltage in bypass mode
SW _ PFET _ EN 0
SW _ PFET _ EN 1
2
2.5
3
3.5
4
VDD,V
LN (CCM) and LP mode transition (load: 5mA)
60
50
40
-3
10
-2
10
-1
10
Load,mA
LP _ CMP _ BIAS 3
LP _ CMP _ BIAS 2
LP _ CMP _ BIAS 1
LP _ CMP _ BIAS 0
0
1
10
10
Relative output droop VS Load current, LP mode
10
5
0
-5
-10
-15
-20
LP _ CMP _ BIAS 3
-25
LP _ CMP _ BIAS 2
LP _ CMP _ BIAS 1
LP _ CMP _ BIAS 0
-30
-3
-2
-1
0
1
10
10
10
10
10
Load,mA
Load Step Response in LN (CCM) mode (Heavy Drive)
DVDD
60mV/div
offset:1.8V
VSW
2V/div
offset:1.8V
100μs/div
DVDD
50mV/div
offset:1.8V
100mA
ILOAD
1mA
10μs/div
Figure 4.3. DC-DC Converter Typical Performance Characteristics
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