参数资料
型号: TPS650061RUKR
厂商: TEXAS INSTRUMENTS INC
元件分类: 稳压器
英文描述: 1.68 A SWITCHING REGULATOR, 2847 kHz SWITCHING FREQ-MAX, PQCC20
封装: 3 X 3 MM, PLASTIC, QFN-20
文件页数: 8/34页
文件大小: 0K
代理商: TPS650061RUKR
Stop150MHz
-20
RBW=10kHz
dBmV
0
-30
10
30
-10
50
20
70
40
60
Start1.5MHz
Stop3.5MHz
-20
RBW=10kHz
SSC
ON
SSC
OFF
0
-30
10
30
-10
50
20
70
40
60
Start1.5MHz
dBmV
EN_DCDC
EN_LDO1
VLDO2
EN_LDO2
PG
A
-
+
VLDO2
Target
VLDO1
-
+
VLDO1
Target
VDCDC
-
+
VDCDC
Target
VDCDC
SLVS810B – JUNE 2009 – REVISED AUGUST 2010
www.ti.com
SSC On/Off Comparison
Zoom In of SSC On/Off Comparison
from 1.5MHz to 150MHz
from 1.5MHz to 3.5MHz
Figure 25.
Figure 26.
Figure 25 to Figure 26 shows the advantage of SSC with the frequency spectrum centering on the nominal
frequency 2.25MHz. The blue spectrum is the result of the spread change. As depicted in the figures the
harmonic spectrum is attenuated 10dB comparing to the same device without SSC.
POWER GOOD
The open drain PG output is used to indicate the condition of the step down converter and each LDO. This is a
combined output, with the outputs being compared when the appropriate enable signal is high. The pin will be
pulled low when all enabled outputs are greater than 90% of the target voltage and High-Z when an enabled
output is less than 90% of its intended value or when all the enable signals are pulled low.
Figure 27. Power Good Functionality
16
Copyright 2009–2010, Texas Instruments Incorporated
相关PDF资料
PDF描述
TPS650006RTER 1.4 A SWITCHING REGULATOR, 2847 kHz SWITCHING FREQ-MAX, PQCC16
TPS65000RTER 1.4 A SWITCHING REGULATOR, 2847 kHz SWITCHING FREQ-MAX, PQCC16
TRU050-GACGA-13M8240000 PHASE LOCKED LOOP, CDSO16
TRU050-GALHA-25M2480000 PHASE LOCKED LOOP, CDSO16
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