參數(shù)資料
型號(hào): TPS65040ZQER
廠商: TEXAS INSTRUMENTS INC
元件分類(lèi): 電源管理
英文描述: 8-CHANNEL POWER SUPPLY MANAGEMENT CKT, PBGA71
封裝: 5 X 5 MM, 0.50 MM PITCH, GREEN, PLASTIC, MICRO, BGA-71
文件頁(yè)數(shù): 36/73頁(yè)
文件大?。?/td> 1928K
代理商: TPS65040ZQER
DETAILED DESCRIPTION
DC/DC converter
+
-
TEST
Control
Logic
&
SCP/CL
Counter
FF
Block
100k
TRI
TRI_WAVE
GMAMPOU
RERR
VREF/
Softstar
t
MAX
DUTY
Shourt
Circuit
Protection
+
-
+
-
ERR
PABIAS1
VBDDP
L1
PA_FB
VOUT
L2
DDPGNDP
DDGNDA
TEST
Current Limit
Protection
CERRBKBT
0.001uF
COUTBKBT
10uF
L12BKBT
2.2uH
CINBKBT
100uF
DDINA
Power Supply
for BKBT
CCLK
CDATA
CSTB
SerialInterface
TXONFST
r[PSCNTDC/DC]
r[PSCNTDC/DC_EXT]
EXT_DC_DC_ON_OFF
BKBT Enable
signal
VREF1
COVREF1
0.01uF
VREF1Buffer
Amplifier
MP1
MN1
MP2
MN2
REFERENCEBLOCK
SLVS708B – NOVEMBER 2006 – REVISED APRIL 2007
The TPS65040 is a buck/boost PWM converter optimized for cellular phone power amplifier applications.
Switching frequency is internally set at 1.5 MHz, allowing the use of small inductors and capacitors. The internal
synchronous switch increases efficiency and provides fast transient response. Figure 70 is a block diagram of
the device.
Figure 70. DC/DC converter Block Diagram
41
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