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ADP3190

更新时间： 2024-11-01 04:31:39
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亚德诺 - ADI 控制器
页数 文件大小 规格书
28页 838K
描述
6-Bit, Programmable 2-/3-/4-Phase, Synchronous Buck Controller

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6-Bit, Programmable 2-/3-/4-Phase,  
Synchronous Buck Controller  
ADP3190  
FEATURES  
Selectable 2-, 3-, or 4-phase operation at up to  
1 MHz per phase  
FUNCTIONAL BLOCK DIAGRAM  
VCC  
28  
RAMPADJ  
14  
RT  
13  
SHUNT  
REGULATOR  
(ADP3190 ONLY)  
±±9. ꢀV worst-case differential sensing error  
over teꢀperature  
OSCILLATOR  
UVLO  
Logic-level PWM outputs for interface to external  
high power drivers  
PWM Flex-ModeTM architecture for excellent load  
transient perforꢀance  
Active current balancing between all output phases  
Built-in power good/crowbar blanking supports on-the-fly  
VID code changes  
11  
19  
EN  
SHUTDOWN  
AND BIAS  
SET  
EN  
27  
26  
25  
24  
RESET  
PWM1  
PWM2  
PWM3  
PWM4  
CMP  
GND  
DAC  
+150mV  
RESET  
CMP  
CSREF  
CURRENT  
BALANCING  
CIRCUIT  
2-/3-/4-PHASE  
DRIVER LOGIC  
RESET  
CMP  
DAC  
–250mV  
6-bit digitally prograꢀꢀable 09837. V to 196 V output  
RESET  
CMP  
Prograꢀꢀable short circuit protection with prograꢀꢀable  
latch-off delay  
10  
PWRGD  
DELAY  
CROWBAR  
CURRENT  
LIMIT  
APPLICATIONS  
23  
22  
21  
20  
SW1  
SW2  
SW3  
SW4  
Desktop PC power supplies for  
Next-generation Intel® processors  
VRM ꢀodules  
15  
ILIMIT  
Gaꢀes consoles  
EN  
17  
16  
18  
CSSUM  
CSREF  
CURRENT  
LIMIT  
CIRCUIT  
GENERAL DESCRIPTION  
12  
DELAY  
The ADP3190/ADP3190A1 are highly efficient, multiphase,  
synchronous buck switching regulator controllers optimized for  
converting a 5 V or 12 V main supply into the core supply voltage  
required by high performance Intel processors. They use an  
internal 6-bit DAC to read a voltage identification (VID) code  
directly from the processor, which is used to set the output  
voltage between 0.8375 V and 1.6 V. The devices use a multimode  
PWM architecture to drive the logic-level outputs at a  
programmable switching frequency that can be optimized for  
VR size and efficiency. The phase relationship of the output  
signals can be programmed to provide 2-, 3-, or 4-phase  
operation, allowing for the construction of up to four  
complementary buck switching stages.  
CSCOMP  
SOFT  
START  
8
FB  
9
COMP  
PRECISION  
REFERENCE  
VID  
DAC  
ADP3190  
7
1
2
3
4
5
6
FBRTN  
VID4 VID3 VID2 VID1 VID0 VID5  
Figure 1.  
The ADP3190/ADP3190A also include programmable, no-load  
offset and slope functions to adjust the output voltage as a function  
of the load current, so it is always optimally positioned for a  
system transient. The ADP3190/ADP3190A also provide  
accurate and reliable short-circuit protection, adjustable current  
limiting, and a delayed power good output that accommodates  
on-the-fly output voltage changes requested by the CPU.  
The ADP3190 is a replacement for the ADP3188. A built-in  
shunt regulator allows the part to be connected to the 12 V  
system supply through a series resistor.  
The devices are specified over the commercial temperature  
range of 0°C to +85°C and are available in a 28-lead TSSOP and  
a 28-lead QSOP.  
1
Protected by U. S. Patent Number 6,683,441; other patents pending.  
Rev9 0  
Inforꢀation furnished by Analog Devices is believed to be accurate and reliable9 However, no  
responsibility is assuꢀed by Analog Devices for its use, nor for any infringeꢀents of patents or other  
rights of third parties that ꢀay result froꢀ its use9 Specifications subject to change without notice9 No  
license is granted by iꢀplication or otherwise under any patent or patent rights of Analog Devices9  
Tradeꢀarks and registeredtradeꢀarks arethe property of their respective owners9  
One Technology Way, P9O9 Box ±106, Norwood, MA 02062-±106, U9S9A9  
Tel: 781932±94700  
Fax: 781946193113  
www9analog9coꢀ  
©2006 Analog Devices, Inc9 All rights reserved9  
 
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