LT8204
40V Full-Bridge or Dual
Half-Bridge Controller
FEATURES
DESCRIPTION
The LT®8204 is a 40V full-bridge or dual half-bridge con-
troller. It can be configured as either a four-switch full-
bridge controller or dual two-switch half-bridge control-
lers to regulate either the output voltage or the output
current. The LT8204 provides two selectable PWM con-
trol methods (i.e., peak current mode control and voltage
mode control) to ease loop frequency compensation for
applications with different load types (inductive, resistive,
or capacitive loads).
n
Full-Bridge or Dual Half-Bridge Controller
n
Dual Bidirectional, Rail-to-Rail Precision Current
Monitors (200μV V )
Dual On-Chip 16-Bit Monotonic DACs
OS
n
n
n
n
n
n
4-Wire SPI with Error Detection and Correction
Quad N-Channel MOSFET 5.3V Gate Drivers
V Range: 5.5V to 40V
IN
Configurable Output Current or Voltage Regulation
Configurable PWM Control Methods for Loop
Stability
The LT8204 features dual bidirectional rail-to-rail preci-
sion (200μV V ) load current monitors, output voltage
monitors, andOdSual on-chip 16-bit monotonic digital-
to-analog converters (DACs). Together with the serial
peripheral interface (SPI), the output current or voltage
can be programmed precisely on-the-fly. The LT8204 also
monitors the system operation status and reports via SPI
interface in case of failure (e.g., loss of load connection,
failure of external MOSFET devices).
n
n
100kHz to 1MHz Fixed Switching Frequency with
SYNC and Spread Spectrum
System Monitor and Fault Report via SPI Interface
APPLICATIONS
n
Solenoid and Inductive Load Regulation
n
Active or Semi-Active Damping Control
n
Thermoelectric Cooler (TEC) Control
Vibration Control
All registered trademarks and trademarks are the property of their respective owners.
n
TYPICAL APPLICATION
Soft Start Up and Shutdown
with IOUT = 8A
RUN
5V/DIV
V
V
14V, 8A Solenoid Driver
OUT2
OUT1
V
OUT1,2
5V/DIV
SOLENOID
4.7µH
4.7µH
5mΩ
5mΩ
5mΩ
5mΩ
TO
IN
V
IN
14V
V
– V
OUT2
10V/DIV
OUT1
V
I
OUT
8A/DIV
BG1 CSP1
SW1
CSN1 SNSP1 SNSN1
SNSP2 SNSN2 CSN2
CSP2 BG2
8204 TA01b
SW2
50ms/DIV
BST1
BST2
TO DIODE
TO DIODE
Soft Start Up and Shutdown
with IOUT = –8A
TG1
TG2
LT8204
TO
GATEV
CC
BST1
SPI INTERFACE
FOR SYSTEM
CONTROL AND
MONITORING
µP
RUN
5V/DIV
TO
BST2
GND
V
V
OUT1
OUT2
8204 TA01a
V
OUT1,2
5V/DIV
V
OUT1
– V
OUT2
10V/DIV
I
OUT
8A/DIV
8204 TA01c
50ms/DIV
Rev. 0
1
Document Feedback
For more information www.analog.com
5秒后页面跳转
AO3401场效应管参数、引脚图、应用原理图
BT131可控硅参数及引脚图、工作原理详解
74LS32芯片参数、引脚图及功能真值表
全球首块英伟达H200交付 黄仁勋“送货上门”
微信公众号
抖音公众号
浙公网安备 33010502006866号 浙ICP备10014259号-119
营业执照ICP证
数据手册
如果您发现信息不准确，
