TPS65910电源管理单元技术文档：RTC与注册表详解

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"TPS65910 文档是一份关于电源管理单元的详细资料，主要涉及RTC（实时时钟）寄存器的相关内容。该文档涵盖了TPS65910系列芯片，包括TPS65910A、TPS659101至TPS659109等多个型号。这些芯片集成了多种功能，如嵌入式电源控制器、双使能信号与SR-I2C复用、两个高效的降压DC-DC转换器用于处理器核心供电、热关断保护和热检测、一个用于I/O电源的高效降压DC-DC转换器、带有内部RC振荡器的RTC资源、动态电压管理、8个LDO电压调节器、RTC LDO、高speed I2C接口以及可配置的GPIO。此外，RTC功能还包含了日期、时间、日历以及报警能力。" TPS65910是一款高度集成的电源管理单元，旨在为各种应用提供全面的电源解决方案。其主要特点包括： 1. **嵌入式电源控制器**：该芯片内置电源控制器，能够对电源状态进行智能控制，适应不同应用场景的需求。 2. **SR-I2C与双使能信号**：通过SR-I2C接口，可以灵活地配置两个使能信号，控制不同的电源状态，增强系统的灵活性。 3. **DC-DC转换器**：TPS65910提供了两个高效的降压DC-DC转换器，专门用于处理器核心的供电，确保处理器在运行时得到稳定且高效的电源。 4. **热保护功能**：具有热关断和热检测功能，能在芯片过热时自动保护系统，防止设备损坏。 5. **RTC资源**：内部包含了一个实时时钟模块，支持32.768kHz晶体或32kHz内置RC振荡器，可以准确地记录和维护日期、时间和日历信息，并具备报警功能。 6. **LDO电压调节器**：8个线性稳压器和一个RTC专用的LDO，为系统中的其他组件提供精确的电压供应。 7. **I2C接口与GPIO**：高speed I2C接口可用于通用控制命令，而可配置的GPIO（通用输入/输出）可以灵活地适应系统中各种控制需求。这份文档对于设计需要精细电源管理和RTC功能的系统非常有价值，它提供了详细的寄存器介绍，帮助开发者理解并配置TPS65910系列芯片，从而优化电源效率，提升系统性能。通过深入学习和应用这份文档，开发者可以更好地利用TPS65910的特性，实现高效、可靠的电源管理方案。

TPS65910

TPS65910A

TPS65910A3

TPS659101

TPS659102

TPS659103

TPS659104

TPS659105

TPS659106, TPS659107, TPS659108, TPS659109

SWCS046U –MARCH 2010–REVISED OCTOBER 2014

www.ti.com

5.7 I

C Interface and Control Signals

over operating free-air temperature range (unless otherwise noted)

NO. PARAMETER TEST CONDITIONS MIN TYP MAX

INT1 rise and fall times, C

= 5 to 35 pF 5 10 ns

NRESPWRON rise and fall times, C

= 5 to 35 pF 5 10 ns

SLAVE HIGH–SPEED MODE

SCL/SCLSR_EN1 and SDA/SDASR_EN2 rise and fall

10 80 ns

time, C

= 10 to 100 pF

Data rate 3.4 Mbps

I3 t

su(SDA-SCLH)

Setup time, SDA valid to SCL high 10 ns

I4 t

h(SCLL-SDA)

Hold time, SDA valid from SCL low 0 70 ns

I7 t

su(SCLH-SDAL)

Setup time, SCL high to SDA low 160 ns

I8 t

h(SDAL-SCLL)

Hold time, SCL low from SDA low 160 ns

I9 t

su(SDAH-SCLH)

Setup time, SDA high to SCL high 160 ns

SLAVE FAST MODE

SCL/SCLSR_EN1 and SDA/SDASR_EN2 rise and fall 20 +

250 ns

time, C

= 10 to 400 pF 0.1 × C

Data rate 400 Kbps

I3 t

su(SDA-SCLH)

Setup time, SDA valid to SCL high 100 ns

I4 t

h(SCLL-SDA)

Hold time, SDA valid from SCL low 0 0.9 µs

I7 t

su(SCLH-SDAL)

Setup time, SCL high to SDA low 0.6 µs

I8 t

h(SDAL-SCLL)

Hold time, SCL low from SDA low 0.6 µs

I9 t

su(SDAH-SCLH)

Setup time, SDA high to SCL high 0.6 µs

SLAVE STANDARD MODE

SCL/SCLSR_EN1 and SDA/SDASR_EN2 rise and fall

250 ns

time, C

= 10 to 400 pF

Data rate 100 Kbps

I3 t

su(SDA-SCLH)

Setup time, SDA valid to SCL high ns

I4 t

h(SCLL-SDA)

Hold time, SDA valid from SCL low 0 µs

I7 t

su(SCLH-SDAL)

Setup time, SCL high to SDA low 4.7 µs

I8 t

h(SDAL-SCLL)

Hold time, SCL low from SDA low 4 µs

I9 t

su(SDAH-SCLH)

Setup time, SDA high to SCL high 4 µs

SWITCHING CHARACTERISTICS

SLAVE HIGH–SPEED MODE

I1 t

w(SCLL)

Pulse duration, SCL low 160 ns

I2 t

w(SCLH)

Pulse duration, SCL high 60 ns

SLAVE FAST MODE

I1 t

w(SCLL)

Pulse duration, SCL low 1.3 µs

I2 t

w(SCLH)

Pulse duration, SCL high 0.6 µs

SLAVE STANDARD MODE

I1 t

w(SCLL)

Pulse duration, SCL low 4.7 µs

I2 t

w(SCLH)

Pulse duration, SCL high 4 µs

Submit Documentation Feedback

Product Folder Links: TPS65910 TPS65910A TPS65910A3 TPS659101 TPS659102 TPS659103 TPS659104

TPS659105 TPS659106 TPS659107 TPS659108 TPS659109

TPS65910

TPS65910A

TPS65910A3

TPS659101

TPS659102

TPS659103

TPS659104

TPS659105

TPS659106, TPS659107, TPS659108, TPS659109

www.ti.com

SWCS046U –MARCH 2010–REVISED OCTOBER 2014

5.8 Power Consumption

over operating free-air temperature range (unless otherwise noted)

All current consumption measurements are relative to the FULL chip, all VCC inputs set to VBAT voltage.

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

Device BACKUP state VBAT = 2.4 V, VBACKUP = 0 V, 11 16

µA

VBAT = 0 V, VBACKUP = 3.2 V 6 9

Device OFF state VBAT = 3.6 V, CK32K clock running

BOOT[1:0] = 00: 32-kHz RC oscillator 16.5 23

BOOT[1:0] = 01: 32-kHz quartz or bypass oscillator, BOOT0P = 0 15 20

µA

BOOT[1:0] = 01, Backup Battery Charger on, VBACKUP = 3.2 V 32 42

VBAT = 5 V, CK32K clock running: 20 28

BOOT[1:0] = 00: RC oscillator

Device SLEEP state VBAT = 3.6 V, CK32K clock running, PWRHOLDP = 0

BOOT[1:0] = 00, 3 DC-DCs on, 5 LDOs and VRTC on, no load 295

µA

BOOT[1:0] = 01, 3 DC-DCs on, 3 LDOs and VRTC on, no load,

279

BOOT0P = 0

Device ACTIVE state VBAT = 3.6 V, CK32K clock running, PWRHOLDP = 0

BOOT[1:0] = 00, 3 DC-DCs on, 5 LDOs and VRTC on, no load 1

BOOT[1:0] = 01, 3 DC-DCs on, 3 LDOs and VRTC on, no load,

0.9

BOOT0P = 0

BOOT[1:0] = 00, 3 DC-DCs on PWM mode (VDD1_PSKIP =

VDD2_PSKIP = VIO_PSKIP = 0), 5 LDOs and VRTC on, no load

5.9 Power References and Thresholds

over operating free-air temperature range (unless otherwise noted)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

Output reference voltage (VREF

Device in active or low-power mode –1% 0.85 +1% V

terminal)

Main battery charged Measured on VCC7 terminal

threshold VMBCH (programmable) Triggering monitored through NRESPRWON

VMBCH_VSEL = 11, BOOT[1:0] = 11 or 00 3

VMBCH_VSEL = 10 2.9

VMBCH_VSEL = 01 2.8

VMBCH_VSEL = 00 bypassed

Main battery discharged Measured on VCC7 terminal (MTL prg) VMBCH –

threshold VMBDCH (programmable) Triggering monitored through INT1 100 mV

Main battery low threshold VMBLO Measured on VCC7 terminal (Triggering

2.5 2.6 2.7 V

(MB comparator) monitored on terminal NRESPWRON)

VBACKUP = 0 V, measured on terminal VCC7

Main battery high threshold VMBHI 2.6 2.75 3

(MB comparator)

VBACKUP = 3.2 V, measured on terminal VCC7 2.5 2.55 3

Main battery not present threshold Measured on terminal VCC7

1.9 2.1 2.2 V

VBNPR (Triggering monitored on terminal VRTC)

= 3.6 V

Ground current (analog references

+ comparators + backup battery Device in OFF state 8

µA

switch)

Device in ACTIVE or SLEEP state 20

Submit Documentation Feedback

Product Folder Links: TPS65910 TPS65910A TPS65910A3 TPS659101 TPS659102 TPS659103 TPS659104

TPS659105 TPS659106 TPS659107 TPS659108 TPS659109

TPS65910

TPS65910A

TPS65910A3

TPS659101

TPS659102

TPS659103

TPS659104

TPS659105

TPS659106, TPS659107, TPS659108, TPS659109

www.ti.com

SWCS046U –MARCH 2010–REVISED OCTOBER 2014

5.12 Backup Battery Charger

over operating free-air temperature range (unless otherwise noted)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

Backup battery charging current VBACKUP = 0 to 2.4 V, BBCHEN = 1 350 500 700 µA

End-of-charge backup battery

VCC7 = 3.6 V, BBSEL = 10 –3% 3.15 +3%

voltage

(1)

VCC7 = 3.6 V, BBSEL = 00 –3% 3 +3%

VCC7 = 3.6 V, BBSEL = 01 –3% 2.52 +3%

VBAT –

VCC7 = 3.6 V, BBSEL = 11 VBAT

0.3 V

Ground current On mode 10 µA

(1) Note:

• BBSEL = 10, 00, or 01 intended to charge battery or superCap

• BBSEL = 11 intended to charge capacitor

5.13 VRTC LDO

over operating free-air temperature range (unless otherwise noted)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

Input voltage V

On mode 2.5 5.5

Back-up mode 1.9 5.5

DC output voltage V

OUT

On mode, 3.0 V < V

< 5.5 V 1.78 1.83 1.88

Back-up mode, 2.3 V ≤ V

≤ 2.6 V 1.72 1.78 1.84

Rated output current I

OUTmax

On mode 20

Back-up mode 0.1

DC load regulation On mode, I

OUT

= I

OUTmax

to 0 50

Back-up mode, I

OUT

= I

OUTmax

to 0 50

DC line regulation On mode, V

= 3.0 V to V

INmax

at I

OUT

= I

OUTmax

2.5

Back-up mode, V

= 2.3 V to 5.5 V at I

OUT

OUTmax

Transient load regulation On mode, V

= V

INmin

+ 0.2 V to V

INmax

(1)

OUT

= I

OUTmax

/2 to I

OUTmax

in 5 µs

and I

OUT

= I

OUTmax

to I

OUTmax

/2 in 5 µs

Transient line regulation On mode, V

= V

INmin

+ 0.5 V to V

INmin

in 30 µs 25

(1)

And V

= V

INmin

to V

INmin

+ 0.5 V in 30 µs, I

OUT

OUTmax

OUT

= 0, V

rising from 0 up to 3.6 V, at V

OUT

Turn-on time 2.2 ms

0.1 V up to V

OUTmin

= V

INDC

+ 100 mV

tone, V

INDC+

= V

INmin

Ripple rejection

0.1 V to V

INmax

at I

OUT

= I

OUTmax

f = 217 Hz 55

f = 50 kHz 35

Ground current Device in ACTIVE state 23

µA

Device in BACKUP or OFF state 3

(1) These parameters are not tested. They are used for design specification only.

Submit Documentation Feedback

Product Folder Links: TPS65910 TPS65910A TPS65910A3 TPS659101 TPS659102 TPS659103 TPS659104

TPS659105 TPS659106 TPS659107 TPS659108 TPS659109

TPS65910

TPS65910A

TPS65910A3

TPS659101

TPS659102

TPS659103

TPS659104

TPS659105

TPS659106, TPS659107, TPS659108, TPS659109

SWCS046U –MARCH 2010–REVISED OCTOBER 2014

www.ti.com

5.14 VIO SMPS

over operating free-air temperature range (unless otherwise noted)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

Input voltage (VCCIO and VCC7) V

OUT

≤ 800 mA 2.7 5.5

OUT

= 1.5 V or 1.8 V, I

OUT

> 800 mA 3.2 5.5

OUT

= 2.5 V, I

OUT

> 800 mA 4.0 5.5

OUT

= 3.3 V, I

OUT

> 800 mA 4.4 5.5

PWM mode (VIO_PSKIP = 0) or pulse skip

DC output voltage (V

OUT

)

mode I

OUT

to I

MAX

VSEL=00 –3% 1.5 +3%

VSEL = 01, default BOOT[1:0] = 00 and 01 –3% 1.8 +3%

VSEL = 10 –3% 2.5 +3% V

VSEL = 11 –3% 3.3 +3%

Power down 0

Rated output current I

OUTmax

ILMAX[1:0] = 00, default 500

ILMAX[1:0] = 01 1000

P-channel MOSFET V

= V

INmin

300

mΩ

On-resistance R

DS(ON)_PMOS

= 3.8 V 250 400

P-channel leakage current I

LK_PMOS

= V

INMAX

, SWIO = 0 V 2 µA

N-channel MOSFET V

= V

MIN

300

mΩ

On-resistance R

DS(ON)_NMOS

= 3.8 V 250 400

N-channel leakage current I

LK_NMOS

= V

INmax

, SWIO = V

INmax

2 µA

PMOS current limit (high-side) V

= V

INmin

to V

INmax

, ILMAX[1:0] = 00 650

= V

INmin

to V

INmax

, ILMAX[1:0] = 01 1200 mA

= V

INmin

to V

INmax

, ILMAX[1:0] = 10 1700

NMOS current limit (low-side) Source current load:

= V

INmin

to V

INmax

, ILMAX[1:0] = 00 650

= V

INmin

to V

INmax

, ILMAX[1:0] = 01 1200

= V

INmin

to V

INmax

, ILMAX[1:0] = 10 1700

Sink current load:

= V

INmin

to V

INmax

, ILMAX[1:0] = 00 800

= V

INmin

to V

INmax

, ILMAX[1:0] = 01 1200

= V

INmin

to V

INmax

, ILMAX[1:0] = 10 1700

DC load regulation On mode, I

OUT

= 0 to I

OUTmax

20 mV

DC line regulation On mode, V

= V

INmin

to V

INmax

20 mV

= 3.8 V, V

OUT

= 1.8 V

50 mV

Transient load regulation I

OUT

= 0 to 500 mA , Max slew = 100 mA/µs

OUT

= 700 to 1200 mA , Max slew = 100 mA/µs

t on, off to on I

OUT

= 200 mA 350 µs

Overshoot SMPS turned on 3%

0.025 ×

Power-save mode Ripple voltage Pulse skipping mode, I

OUT

= 1 mA V

OUT

Switching frequency 3 MHz

Duty cycle 100 %

Minimum On Time T

ON(MIN)

35 ns

P-channel MOSFET

VFBIO internal resistance 0.5 1 MΩ

Discharge resistor for power-down

During device switch-off sequence 30 50 Ω

sequence R

DIS

Note: No discharge resistor is applied if VIO is

turned off while the device is on.

Submit Documentation Feedback

Product Folder Links: TPS65910 TPS65910A TPS65910A3 TPS659101 TPS659102 TPS659103 TPS659104

TPS659105 TPS659106 TPS659107 TPS659108 TPS659109

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