Cirrus Logic CS35L32 - Manual (Page 45)

DS963F4 45
CS35L32
8 Typical Performance Plots
8 Typical Performance Plots
8.1 System-Level Efficiency and Power-Consumption Plots
For all system-level efficiency and power-consumption plots, a simulated speaker load (8 + 33 H) is used; the amplifier
PWM outputs (OUT±) contain no EMI filtering. Efficiency calculations are based on RMS power delivered to the load at
the generated frequency and include power consumption of both VA and VP.
Figure 8-1. Efficiency vs. Output Power—VBST = VP
(VP = 3.0 V, VP = 3.6 V, VP = 4.2 V)
Figure 8-2. VP Supply Current vs. Output Power—VBST = VP
(VP = 3.0 V, VP = 3.6 V, VP = 4.2 V)
Figure 8-3. Efficiency vs. Output Power—VBST = 5.0 V
(VP = 3.0 V, VP = 3.6 V, VP = 4.2 V)
Figure 8-4. VP Supply Current vs. Output Power—VBST = 5.0 V
(VP = 3.0 V, VP = 3.6 V, VP = 4.2 V)
VBST = VP, VP = 3.0 V
VBST = VP, VP = 3.6 V
VBST = VP, VP = 4.2 V
0 200 400 600 800 1000 1200
0
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100
Output Power (mW)
Efficiency (%)
VBST = VP, VP = 3.0 V
VBST = VP, VP = 3.6 V
VBST = VP, VP = 4.2 V
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0
50
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Output Power (mW)
VP Current (mA)
VBST = 5 V, VP = 3.0 V
VBST = 5 V, VP = 3.6 V
VBST = 5 V, VP = 4.2 V
0 200 400 600 800 1000 1200 1400 1600 1800 2000
0
10
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Output Power (mW)
Efficiency (%)
VBST = 5 V, VP = 3.0 V
VBST = 5 V, VP = 3.6 V
VBST = 5 V, VP = 4.2 V
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0
100
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Output Power (mW)
VP Current (mA)