參數(shù)資料
型號: P95020NQG
廠商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類: 電源管理
英文描述: 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, QCC132
封裝: 10 X 10 MM, 0.85 MM HEIGHT, QFN-132
文件頁數(shù): 157/169頁
文件大?。?/td> 4297K
代理商: P95020NQG
IDTP95020
Product Datasheet
September 2, 2011 Revision 1.3 Final
88
2011 Integrated Device Technology, Inc.
DC-DC MODULE
The DC-DC module contains three Buck regulators, three
Boost regulators and a Class-D power stage as shown in
Figure 18. To use the DC_DC regulators, the CKGEN
PLLs need to be powered on since the DC_DC uses a 24
MHz clock to operate. To turn on DC_DC regulators, the
global enable bits need to be programmed to “enable”.
First, program the DC_DC voltage/ current limit settings
and then set the “enable” bit for that particular DC_DC
regulator.
The DC_DC Module can be controlled and monitored by
writing 8-bit control words to the various registers. The
Base addresses are defined in Table 11 – Register
Address Global Mapping on Page 16.
Table 144 – DC-DC Block Registers (Including the CLASS_D BTL Power Bridge)
NAME
SIZE
(BYTES)
IC
ADDRESS
BASE
ADDRESS
DESCRIPTION
REGISTER DEFINITION
LOCATION
DCDC_GLOBAL_EN
1
Page-x: 05(0x05)
0xA005
DCDC global enable register
Table 242 on Page 148
BUCK500_0 (BC0)
2
Page-0: 128(0x80)
0xA080
Buck Converter #0, 500 mA
Table 145 on Page 92
BUCK500_1 (BC1)
2
Page-0: 130(0x82)
0xA082
Buck Converter #1, 500 mA
Table 145 on Page 92
BUCK1000 (BC2)
2
Page-0: 132(0x84)
0xA084
Buck Converter #2, 1000 mA
Table 145 on Page 92
LED_BOOST
2
Page-0: 134(0x86)
0xA086
LED_BOOST LED Driver, including sinks
Table 158 on Page 100
BOOST5
2
Page-0: 136(0x88)
0xA088
BOOST5 5V Boost Converter
Table 165 on Page 107
CLASS_D
4
Page-0: 138(0x8A)
0xA08A
CLASS_D BTL Power Bridge
Table 174 on Page 113
RESERVED
2
Page-0: 142(0x8E)
0xA08E
RESERVED
Figure 18. DC-DC Module Block Diagram
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