参数资料
型号: P95020ZLLGI
厂商: INTEGRATED DEVICE TECHNOLOGY INC
元件分类: 电源管理
英文描述: 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PBGA124
封装: LLGA-124
文件页数: 110/137页
文件大小: 3533K
代理商: P95020ZLLGI
P95020 / Preliminary Datasheet
Revision 0.7.10
74
2010 Integrated Device Technology, Inc.
7.0 DC_DC MODULE
To use the DC_DC regulators, the CKGEN PLLs need to be powered on since the DC_DC needs 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 3 – Register Address Global Mapping on page 20.
Table 17
DC-DC Block Registers (Including the CLASS_D BTL Power Bridge)
Name
Size
(Bytes)
IC
Address
Base
Address
Description
Register Definition Location
BUCK500_0 (BC0)
2
Page-0: 128(0x80)
0xA080
Buck Converter #0, 500 mA
BUCK500_1 (BC1)
2
Page-0: 128(0x82)
0xA082
Buck Converter #1, 500 mA
BUCK1000 (BC2)
2
Page-0: 128(0x84)
0xA084
Buck Converter #2, 1000 mA
LED_BOOST
2
Page-0: 128(0x86)
0xA086
LED_BOOST LED Driver, Including Sinks
BOOST5
2
Page-0: 128(0x88)
0xA088
BOOST5 5V Boost Converter
CLASS_D
4
Page-0: 140(0x8A)
0xA08A
CLASS_D BTL Power Bridge
RESERVED
2
Page-0: 140(0x8E)
0xA08E
RESERVED
Vsys
GND
Block
Control/
Status
Register
Access
Interface
Package
Pins
Class D
Signal
Processing
CLASS_D
Power Stage
Register access
bus interface
Reference
& Bias
BUCK500_0
500 mA BUCK
BUCK500_1
500 mA BUCK
BUCK1000
1 A BUCK
BOOST5
1.5A BOOST
LED_BOOST
LED Power
LED_BOOST
Current-Sinks
Figure 15 DC_DC Block Diagram
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