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A6727B 数据表(PDF) 2 Page - STMicroelectronics

部件名 A6727B
功能描述  Automotive single-phase PWM controller
PDF  26 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

A6727B 数据表(HTML) 2 Page - STMicroelectronics

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1
Typical application circuit and block diagram
1.1
Application circuit
Figure 1. Typical application circuit
HS
LS
VIN = 1.5 V to 19 V (**)
L
COUT
Vout
LOAD
CHF
CBULK
RD
CSN
RSN
CBOOT
RgHS
RgLS
D
1
2
8
BOOT
UGATE
PHASE
LGATE
4
CDEC
FB
6
RFB
COMP /
DIS / OC
7
RF
CF
CP
GND
VCC
ROS
VCC = 5 V to 12 V
ROCSET
(*)
5
3
A6727B Reference schematic
(**) Up to 12 V with Vcc > 5 V
(*) ROCSET not to be connected when VCC > 5 V
1.2
Block diagram
Figure 2. Block diagram
BOOT
LGATE
UGATE
GND
HS
LS
VCC
ERROR
AMPLIFIER
+
-
0.8V
300 kHz
OSCILLATOR
PWM
PHASE
CONTROL LOGIC
& PROTECTIONS
CURRENT READ
& OCP
DISABLE
A6727B
A6727B
Typical application circuit and block diagram
DS14159 - Rev 2
page 2/26



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