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参数资料
| 型号： | PC13892AJVK |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PBGA139 |
| 封装： | 7 X 7 MM, 0.50 MM PITCH, ROHS COMPLIANT, PLASTIC, MO-195AD, MABGA-139 |
| 文件页数： | 41/67页 |
| 文件大小： | 2571K |
| 代理商： | PC13892AJVK |
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Output Drive
SW1IN
SW1OUT
SW1FB
Control
SW1
Switcher
Core
DVS1
32KHz
BP
GNDSW1
Bucked Output
Voltage SW1
STBYDLY[1:0]
DVS2
GNDSW1
Output Drive
SW2IN
SW2OUT
SW2FB
Control
SW2
BP
Bucked Output
Voltage SW2
GNDSW2
Output Drive
SW3IN
SW3OUT
SW3FB
Control
SW3
BP
Bucked Output
Voltage SW3
GNDSW3
SPI
Registers
= Package Pin
Output Drive
SW4IN
SW4OUT
SW4FB
Control
SW4
GNDSW4
BP
Bucked Output
Voltage SW4
STANDBYSEC
STANDBYPRI
Analog Integrated Circuit Device Data
46
Freescale Semiconductor
13892
FUNCTIONAL DEVICE OPERATION
Because of an order from the United States International Trade Commission, BGA-packaged product lines and part numbers indicated here currently are not
available from Freescale for import or sale in the United States prior to September 2010: MC13892*VK and MC13892*VL in 139, 186 MAPBGA packages.
Figure 7. Buck Switch Diagram
The Buck switcher topology includes an integrated
synchronous rectifier, meaning that the rectifying diode is
implemented on chip as a low ohmic FET. The placement of
an external diode is therefore not required, but overall
switcher efficiency may benefit from this. The buck
converters permit a 100% duty cycle operation.
During normal operation several power modes are
possible, depending on the loading. For medium and full
loading, synchronous PWM control is the most efficient while
maintaining a constant switching frequency.
The output voltages of the buck switchers are SPI
configurable and two output ranges are available, individually
programmed with SWxHI for SW2, SW3, and SW4 bucks,
SW1 is limited to only one output range. Presets are available
for both the Normal and Standby operation.
The first voltage range that applies for all the Buck
switchers goes from 0.6 to 1.375 V in 25 mV steps. The
second one does not apply for SW1 and goes from 1.1 to
1.85 V also in 25 mV steps.
SW1 and SW2 include pin controlled Dynamic Voltage
Scaling (DVS) operation. When transitioning from one
voltage to another, the output voltage slope is controlled in
steps of 25 mV per time step (time step as defined for DVS
stepping for SW1 and SW2, fixed at 4.0
μs for SW3, and
SW4). This allows for support of dynamic voltage scaling
(DVS) by using SPI driven voltage steps, state machine
defined modes, and direct DVSx pin control. SW1 and SW2
also include the Switcher Increment/Decrement (SID)
feature, with which, an increment command will increase the
set point voltage by a single 25 mV step, and a decrement
command will decrease it in the same amount of voltage. The
transition time for the step will be the same as programmed
for the DVS feature. Maximum and minimum voltages are
programmable to ensure the switcher voltage does not go out
a specific range. Panic mode is also included to quickly return
the switcher voltage to its normal programmed set point.
When initially activated, switcher outputs will apply
controlled stepping to the programmed value. The soft start
feature limits the inrush current at startup.
Point of Load feedback is intended for minimizing errors
due to board level IR drops.
MODES OF OPERATION
Two PWM modes are available:
PWM-NPS: sacrifices low load efficiency for a continuous
switching operation.
PWM-PS: offers better low load efficiency by allowing the
absence of switching cycles at low output loading. This pulse
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PC13892AJVKR2 | 制造商:Freescale Semiconductor 功能描述:POWER MGMT IC - Tape and Reel |
| PC13892AJVL | 制造商:Freescale Semiconductor 功能描述:5/28V BCK/BST PMUIC - Bulk |
| PC13892AJVLR2 | 制造商:Freescale Semiconductor 功能描述:5/28V BCK/BST PMUIC - Tape and Reel |
| PC13892BJVL | 制造商:Freescale Semiconductor 功能描述:5/28V BCK/BST PMUIC - Trays |
| PC13892JVK | 制造商:Freescale Semiconductor 功能描述:POWER MGMT IC - Bulk |
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