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参数资料
| 型号： | PWL6030B1AACMR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PBGA187 |
| 封装： | 7 X 7 MM, 0.40 MM PITCH, GREEN, FCBGA-187 |
| 文件页数： | 39/97页 |
| 文件大小： | 937K |
| 代理商： | PWL6030B1AACMR |
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SWCS045B
– SEPTEMBER 2010 – REVISED JUNE 2011
VRTC
The VRTC regulator supplies always-on functions, such as RTC and wake-up functions. This power resource is
active as soon as a valid energy source is present.
This resource has two modes:
Normal mode when supplied from main battery and able to supply all digital part of the TWL6030
Backup mode when supplied from either a backup battery or a main battery and able to supply only
always-on parts
VRTC supplies the digital part of the TWL6030 device. In BACKUP state, the VRTC regulator is in low-power
mode (VBRTC) and is supplied from a backup battery or main battery; the digital activity is reduced to the RTC
parts only and maintained in retention registers of the backup domain. The rest of the digital is under reset and
the clocks are gated.
In WAIT-ON state, the turn-on events and detection mechanism are also added to the previous RTC current load
and still supplied on VRTC or VBRTC.
In ACTIVE state, VRTC switches automatically into ACTIVE state (inside analog backup battery IP). The reset is
released and the clocks are available.
In SLEEP state, VRTC is kept active. The reset is released and only the 32-kHz clock is available. Still, to reduce
power consumption, VBRTC can be used instead of VRTC.
VAUX1, VAUX2, VAUX3, VMMC, VUSIM
The VMMC LDO is a programmable linear voltage converter used to power a multimedia card (MMC) slot. On
top of the normal control by the power controller, it can be turned off when card removal is detected (the
VMMC_AUTO_OFF bit in the MMCCTRL register). VMMC is based on the same GPLDO architecture as the one
used for the VAUX regulators.
Voltage regulator VUSIM is dedicated to supply removable USIM memory. In addition to the normal control by
the power controller, it can be turned off when card removal is detected (the VSIM_AUTO_OFF bit in the
SIMCTRL register).
The TWL6030 device includes three general-purpose resources (VAUX1, VAUX2, and VAUX3) to supply
external peripherals, such as camera sensors, display drivers, memories (embedded multimedia cards [eMMCs]),
and others. When not used as a supply, VAUX3 can deliver a PWM supply to drive a vibrator motor.
VCXIO, VDAC, VPP, VUSB
The VCXIO and VDAC regulators supply noise-sensitive functions; for example, the VCXIO supplies the PLLs
and MIPI D-PHY; and VDAC can be used to supply the video DAC. Both LDOs can be preregulated by the
V2V1 SMPS.
VUSB supplies the USB PHY from the PMID node of the USB charger or from battery.
VPP supplies the host processor eFuse circuitry. The default value is 1.9 V output supply.
BACKUP BATTERY CHARGER
The TWL6030 device provides a backup mode in which a backup battery is used to power the RTC and other
secure registers when no other energy source is available. The backup battery is optional and can be
nonrechargeable or rechargeable. The rechargeable battery can be charged from the main battery using the
backup battery charger.
The backup battery charger includes two control loops (CC/CV). A current loop limits the charging current when
backup battery voltage is low and a voltage loop that gradually reduces the charging current as backup battery
voltage approaches its final value. The charge current limit is fixed and the end of charge voltage is
programmable.
The backup battery charger is enabled by software and the charging starts if the main battery voltage is 100 mV
above backup battery voltage; charging is stopped when backup battery voltage equals either the selected end of
the charge voltage level or the main battery voltage, if it is below the end of the charge level programmed. The
backup battery charge cannot start if main battery voltage is lower than VBATMIN_LO. The backup battery
switch controls when the system enters in backup mode (supplied by the backup battery).
44
Copyright
2010–2011, Texas Instruments Incorporated
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