TPS2214DBRG4 [TI]
3-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO24, GREEN, PLASTIC, SSOP-24;
| 型号： | TPS2214DBRG4 |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | 3-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO24, GREEN, PLASTIC, SSOP-24 光电二极管 |
| 文件： | 总25页 (文件大小：354K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TPS2214
DUAL-SLOT PC CARD POWER-INTERFACE SWITCH
FOR SERIAL PCMCIA CONTROLLERS
SLVS206B – JULY 1999 – REVISED JUNE 2000
DB PACKAGE
(TOP VIEW)
Fully Integrated xVCC and xVPP Switching
xVPP Programmed Independent of xVCC
3.3-V, 5-V, and/or 12-V Power Distribution
1
24
23
22
21
20
19
18
17
16
15
14
13
5V
5V
5V
NC
MODE
NC
12V
BVPP
BVCC
BVCC
STBY
OC
2
Low r
(60-mΩ xVCC Switch Typical)
DS(on)
3
DATA
CLOCK
LATCH
RESET
12V
AVPP
AVCC
AVCC
GND
Short Circuit and Thermal Protection
150-µA (Maximum) Quiescent Current
Standby Mode: 50-mA Current Limit (Typ)
12-V Supply Can Be Disabled
3.3-V Low-Voltage Mode
4
5
6
7
8
9
Meets PC Card Standards
10
11
12
3.3V
3.3V
TTL-Logic Compatible Inputs
Break-Before-Make Switching
Internal Power-On Reset
RESET
†
TheTPS2214isidenticaltotheTPS2216inallrespects
except packaging and pin assignments.
description
NC – No internal connection
The TPS2214 PC Card power-interface switch provides an integrated power-management solution for two PC
Cards. All of the discrete power MOSFETs, a logic section, current limiting, and thermal protection for PC Card
control are combined on a single integrated circuit. This device allows the distribution of 3.3-V, 5-V, and/or 12-V
power to the card. The current-limiting feature eliminates the need for fuses. Current-limit reporting can help
the user isolate a system fault.
The TPS2214 features a 3.3-V low-voltage mode that allows for 3.3-V switching without the need for 5-V power.
This feature facilitates low-power system designs such as sleep modes where only 3.3 V is available. This
device also has the ability to program the xVPP outputs independent of the xVCC outputs. A standby mode that
changes all output-current limits to 50 mA (typical) has been incorporated.
End-equipment applications for the TPS2214 include: notebook computers, desktop computers, personal
digital assistants (PDAs), digital cameras, and bar-code scanners.
AVAILABLE OPTIONS
†
PACKAGED DEVICES
T
J
PLASTIC SMALL OUTLINE
(DB)
–40°C to 125°C
TPS2214DB(R)
†
The DB package is available in tubes and left-end
taped and reeled. Add R suffix to device type (e.g.,
TPS2214DBR) for taped and reeled.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PC Card is a trademark of PCMCIA (Personal Computer Memory Card International Association).
Copyright 2000, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS2214
DUAL-SLOT PC CARD POWER-INTERFACE SWITCH
FOR SERIAL PCMCIA CONTROLLERS
SLVS206B – JULY 1999 – REVISED JUNE 2000
Terminal Functions
TERMINAL
I/O
DESCRIPTION
NAME
3.3V
NO.
13,14
1, 2, 24
7, 20
9, 10
8
I
3.3-V input for card power and/or chip power if 5 V is not present
5-V input for card power and/or chip power
5V
I
12V
I
12-V V input card power
pp
AVCC
AVPP
BVCC
BVPP
GND
MODE
O
O
O
O
VCC output: 3.3-V, 5-V, GND or high impedance to card
VPP output: 3.3-V, 5-V, 12-V, GND or high impedance to card
VCC output: 3.3-V, 5-V, GND or high impedance to card
VPP output: 3.3-V, 5-V, 12-V, GND or high impedance to card
Ground
17, 18
19
11
22
I
TPS2206 operation when floating or pulled low; must be pulled high externally for TPS2214 operation. MODE
is internally pulled low with a 150-kΩ pulldown resistor.
OC
15
6
O
I
Logic-level output that goes low when an overcurrent or overtemperature condition exists.
RESET
Logic-level reset input active high. Do not connect if RESET pin is used. RESET is internally pulled low with
a 150-kΩ pulldown resistor.
RESET
STBY
12
16
I
I
Logic-level reset input active low. Do not connect if RESET pin is used. The pin is internally pulled high with
a 150-kΩ pullup resistor.
Logic-level active low input sets the TPS2214 to standby mode and sets all current limits to 50 mA. The pin is
internally pulled high with a 150-kΩ pullup resistor.
CLOCK
DATA
LATCH
NC
4
I
I
I
Logic-level clock for serial data word
Logic-level serial data word
3
5
Logic-level latch for serial data word
No internal connection
21, 23
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS2214
DUAL-SLOT PC CARD POWER-INTERFACE SWITCH
FOR SERIAL PCMCIA CONTROLLERS
SLVS206B – JULY 1999 – REVISED JUNE 2000
functional block diagram
TPS2214
9
AVCC
S1
10
13
AVCC
3.3V
S2
14
CS
3.3V
S7
8
S3
AVPP
CS
S8
CS
S9
CS
S10
CS
1
17
5V
BVCC
2
S4
5V
18
BVCC
24
5V
S5
S6
CS
S11
19
BVPP
CS
S12
CS
S13
CS
7
†
12V
S14
CS
20
†
12V
Internal
Current Monitor
22
16
Thermal
MODE
STBY
3
4
5
6
DATA
CLOCK
LATCH
RESET
11
GND
12
15
RESET
OC
†
Both 12V pins must be connected together.
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS2214
DUAL-SLOT PC CARD POWER-INTERFACE SWITCH
FOR SERIAL PCMCIA CONTROLLERS
SLVS206B – JULY 1999 – REVISED JUNE 2000
†
absolute maximum ratings over operating virtual free-air temperature (unless otherwise noted)
Input voltage range for card power: V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to 6 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to 6 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to 14 V
I(3.3V)
I(5V)
V
V
I(12V)
Logic input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to 6 V
Output voltage range:
V
V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to 6 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to 14 V
O(xVCC)
O(xVPP)
Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table
Output current: I
I
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally limited
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally limited
O(xVCC)
O(xVPP)
Operating virtual junction temperature range, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40°C to 125°C
Storage temperature range, T
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
J
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55°C to 150°C
stg
†
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
DISSIPATION RATING TABLE
‡
T
≤ 25°C
DERATING FACTOR
T
= 70°C
T = 85°C
A
A
A
PACKAGE
POWER RATING
ABOVE T = 25°C
POWER RATING POWER RATING
A
DB
890 mW
8.90 mW/°C
489 mW 356 mW
‡
These devices are mounted on an JEDEC low-k board (2 oz. traces on surface), 1-W power applied.
recommended operating conditions
MIN
2.7
2.7
2.7
MAX
5.25
5.25
13.5
1
UNIT
V
V
V
V
I(3.3V)
Input voltage, V
V
I
I(5V)
V
I(12V)
I
at T = 70°C
A
O(VCC)
O(VPP)
A
Output current, I
Clock frequency
O
I
at T = 70°C
200
2.5
mA
MHz
A
Data
200
250
100
100
100
100
250
–40
Pulse duration
Latch
Clock
ns
§
Data hold time
ns
ns
ns
ns
°C
§
Data setup time
Latch delay time
Clock delay time
§
§
Operating virtual junction temperature, T
125
J
§
Refer to Figures 2 and 3.
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS2214
DUAL-SLOT PC CARD POWER-INTERFACE SWITCH
FOR SERIAL PCMCIA CONTROLLERS
SLVS206B – JULY 1999 – REVISED JUNE 2000
electrical characteristics, T = 25°C, V
outputs unloaded (unless otherwise noted)
= 5 V, V
= 3.3 V, V
= 12 V, STBY floating, all
J
I(5V)
I(3.3V)
I(12V)
power switch
PARAMETER
TEST CONDITIONS
MIN
TYP
60
90
65
90
60
90
65
95
70
100
70
100
0.7
1.4
1.4
2
MAX
85
UNIT
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
I
= 25°C,
= 125°C,
= 25°C,
= 125°C,
= 25°C,
= 125°C,
= 25°C,
= 125°C,
= 25°C,
= 125°C,
= 25°C,
= 125°C,
= 25°C,
= 125°C,
= 25°C,
I
I
= 1 A
= 1 A
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
O
120
85
3.3 V to xVCC, with one
switch on
O
V
V
I
= 0,
I
O
I
O
= 1 A
I(5V)
I(5V)
= 0,
= 1 A
130
85
= 1 A
5 V to xVCC, with one
switch on
O
I
I
I
= 1 A
120
105
140
105
140
105
140
1
O
O
O
mΩ
= 1 A each
= 1 A each
= 0,
3.3 V to xVCC, with two
switches on
V
V
I
I
O
I
O
= 1 A each
= 1 A each
Switch
resistance
I(5V)
†
= 0,
I(5V)
= 1 A each
= 1 A each
= 50 mA
5 V to xVCC, with two
switches on
O
I
O
I
O
I
O
3.3 V/5 V/12 V to xVPP
3.3 V/5 V to xVCC
= 50 mA
2.5
2
STBY = low,
= 125°C, STBY = low,
= 25°C, STBY = low,
I
O
I
O
I
O
I
O
= 30 mA
= 30 mA
= 30 mA
= 30 mA
Ω
3
5
7
3.3 V/5 V/12 V to xVPP
= 125°C, STBY = low,
10
0.275
0.275
1
16
V
at 10 mA, After reset
O(xVCC)
at 10 mA, After reset
O(xVPP)
0.8
0.8
10
Clamp low
voltage
O(xVCC)
V
V
I
O(xVPP)
T
J
T
J
T
J
T
J
= 25°C
I
High-impedance
High-impedance
O(xVCC)
state
= 125°C
= 25°C
2
50
I
I
Leakage current
µA
lkg
1
10
I
O(xVPP)
state
= 125°C
2
50
I
I
1
2.2
500
A
O(xVCC)
O(xVPP)
T
= 85°C, output powered into a short to GND
J
250
mA
Short-circuit
output current
OS
T
J
= 85°C,
Standby mode I
35
30
50
50
65
60
O(xVCC)
O(xVPP)
†
limit
Output powered into a short to GND,
STBY = 0 V
mA
µs
Standby mode I
xVCC switch
xVPP switch
100
16
Current limit
response time
100-mΩ short circuit
‡
I
I
I
I
I
I
I
I
I
0.01
100
6
2
120
10
I(3.3V)
I(5V)
V
= V
= 5 V
O(xVPP)
µA
O(xVCC)
Normal operation
and in reset
mode
I(12V)
I(3.3V)
I(5V)
100
0
120
V
= 0,
I(5V)
§
I
I
µA
V
V
= 3.3 V,
= 12 V
Input current
O(xVCC)
O(xVPP)
22
30
1
I(12V)
I(3.3V)
I(5V)
Shutdown mode
V
= Hi-Z,
V
= Hi-Z
µA
°C
1
O(xVCC)
O(xVPP)
1
I(12V)
Trip point, T
J
Hysteresis
155
10
Thermal
‡
shutdown
†
Pulse-testing techniques maintain junction temperature close to ambient temperature (250-µs-wide pulse, less than 0.5% duty cycle); thermal
effects must be taken into account separately.
Specified by design, not tested in production.
‡
§
Input currents do not include logic input currents (presented in electrical characteristics for logic section); clock is inactive.
NOTE: V
I(3.3V)
or V
must be biased for switches to function.
I(5V)
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS2214
DUAL-SLOT PC CARD POWER-INTERFACE SWITCH
FOR SERIAL PCMCIA CONTROLLERS
SLVS206B – JULY 1999 – REVISED JUNE 2000
logic section (CLOCK, DATA, LATCH, MODE, RESET, RESET, STBY, OC)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
50
1
UNIT
V
V
V
V
V
V
= 5 V or V
= 0 V or V
= 5 V
= 0 V
= 5 V
30
I(RESET)
I(RESET)
I(MODE)
I(MODE)
I(RESET)
I(RESET)
†
I
or I
I(RESET)
I(RESET)
30
30
50
1
†
I
I(MODE)
Logic input current
= 0 V
µA
= 5 V
= 0 V
1
I(STBY)
I(STBY)
†
I
I
I(STBY)
50
1
or I
or I
I(LATCH)
I(CLOCK)
I(DATA)
V
V
= 5 V
2
2
I(5V)
Logic input high level
Logic input low level
V
V
V
V
= 0 V
I(5V)
0.8
0.4
V
V
= 5 V,
= 0 V,
I
I
= 1 mA
= 1 mA
V
–0.4
I(5V)
O
I(5V)
Logic output high level, OC
Logic output low level, OC
V
–0.4
I(5V)
O
I(3.3V)
I
O
= 1 mA
†
RESET and MODE have internal 150-kΩ pulldown resistors; RESET and STBY have internal 150-kΩ pullup resistors.
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS2214
DUAL-SLOT PC CARD POWER-INTERFACE SWITCH
FOR SERIAL PCMCIA CONTROLLERS
SLVS206B – JULY 1999 – REVISED JUNE 2000
switching characteristics
†
†
†
PARAMETER
LOAD CONDITION
TEST CONDITIONS
MIN
TYP
MAX
UNIT
C
C
I
I
= 0.1 µF,
= 0.1 µF,
L(xVCC)
O(xVCC)
O(xVPP)
V
V
V
V
V
V
V
V
1
O(xVCC)
§
= 0 ,
0.8
1.2
2.5
0.01
0.01
3
O(xVPP)
O(xVCC)
O(xVPP)
O(xVCC)
O(xVPP)
O(xVCC)
O(xVPP)
§
= 0
‡
t
r
ms
Output rise times
C
C
= 150 µF,
= 10 µF,
= 1 A,
L(xVCC)
L(xVPP)
O(xVCC)
O(xVPP)
I
I
= 50 mA
C
C
= 0.1 µF,
= 0.1 µF,
L(xVCC)
L(xVPP)
O(xVCC)
O(xVPP)
§
I
I
= 0 ,
§
= 0
‡
t
f
ms
Output fall times
C
C
= 150 µF,
= 10 µF,
= 1 A,
L(xVCC)
L(xVPP)
O(xVCC)
O(xVPP)
I
I
8
= 50 mA
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
3
25
0.6
8.5
0.6
9
pd(on)
pd(off)
pd(on)
pd(off)
pd(on)
pd(off)
pd(on)
pd(off)
pd(on)
pd(off)
pd(on)
pd(off)
pd(on)
pd(off)
pd(on)
pd(off)
pd(on)
pd(off)
pd(on)
pd(off)
pd(on)
pd(off)
pd(on)
pd(off)
pd(on)
pd(off)
pd(on)
pd(off)
Latch↑ to xVPP (12 V)
Latch↑ to xVPP (5 V)
Latch↑ to xVPP (3.3 V),
V
= 5 V
I(5V)
Latch↑ to xVPP (3.3 V),
= 0 V
C
C
I
= 0.1 µF,
= 0.1 µF,
L(xVCC)
O(xVCC)
O(xVPP)
1.4
9
§
= 0 ,
V
I(5V)
§
I
= 0
0.3
15
0.2
15
0.4
15
4.5
13
3.3
8
Latch↑ to xVCC (5 V)
Latch↑ to xVCC (3.3 V),
V
= 5 V
I(5V)
Latch↑ to xVCC (3.3 V),
= 0 V
V
I(5V)
‡
t
pd
Propagation delay
ms
Latch↑ to xVPP (12 V)
Latch↑ to xVPP (5 V)
3
Latch↑ to xVPP (3.3 V),
V
= 5 V
9
I(5V)
Latch↑ to xVPP (3.3 V),
= 0 V
C
C
I
= 150 µF,
= 10 µF,
= 1 A,
L(xVCC)
L(xVPP)
3
V
I(5V)
9
O(xVCC)
O(xVPP)
I
= 50 mA
1
Latch↑ to xVCC (5 V)
12
0.6
12
1
Latch↑ to xVCC (3.3 V),
V
= 5 V
I(5V)
Latch↑ to xVCC (3.3 V),
= 0 V
V
I(5V)
12
†
‡
§
Refer to Parameter Measurement Information
Specified by design: not tested in production.
No card inserted, assumes 0.1-µF recommended output capacitor (see Figure 34).
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS2214
DUAL-SLOT PC CARD POWER-INTERFACE SWITCH
FOR SERIAL PCMCIA CONTROLLERS
SLVS206B – JULY 1999 – REVISED JUNE 2000
PARAMETER MEASUREMENT INFORMATION
xVPP
xVCC
I
I
O(xVPP)
O(xVCC)
LOAD CIRCUITS
V
V
DD
DD
LATCH
LATCH
50%
50%
t
GND
GND
t
pd(off)
pd(off)
t
t
pd(on)
pd(on)
90%
10%
V
O(xVPP)
V
O(xVCC)
90%
10%
GND
GND
Propagation Delay (xVPP)
Propagation Delay (xVCC)
t
f
t
f
t
t
r
r
V
V
O(xVPP)
90%
10%
90%
10%
O(xVCC)
GND
GND
Rise/Fall Time (xVCC)
Rise/Fall Time (xVPP)
V
V
DD
DD
LATCH
50%
50%
GND
GND
t
t
off
off
t
t
on
on
V
O(xVPP)
V
90%
10%
90%
10%
O(xVCC)
GND
GND
Turn On/Off Time (xVPP)
Turn On/Off Time (xVCC)
VOLTAGE WAVEFORMS
Figure 1. Test Circuits and Voltage Waveforms
8
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS2214
DUAL-SLOT PC CARD POWER-INTERFACE SWITCH
FOR SERIAL PCMCIA CONTROLLERS
SLVS206B – JULY 1999 – REVISED JUNE 2000
PARAMETER MEASUREMENT INFORMATION
DATA
D6
D10
D8
D7
D4
D3
D1
D9
D5
D2
D0
Data Setup Time
Data Hold Time
Latch Delay Time
LATCH
CLOCK
Clock Delay Time
NOTE: Data is clocked in on the positive edge of the clock. The positive edge of the latch signal should occur before the next positive edge of
the clock. For definition of D0 to D10, see the control logic table.
Figure 2. Serial-Interface Timing for Independent xVPP Switching When MODE = 5 V or 3.3 V
DATA
D4
D8
D6
D5
D2
D1
D7
D3
D0
Data Setup Time
LATCH
Latch Delay Time
Data Hold Time
Clock Delay Time
CLOCK
NOTE: Data is clocked in on the positive edge of the clock. The positive edge of the latch signal should occur before the next positive edge of
the clock. For definition of D0 to D8, see the control logic table.
Figure 3. Serial-Interface Timing When MODE = 0 V or Floating
†
Table of Timing Diagrams
FIGURE
Short-circuit current response, short applied to powered-on 5-V xVCC switch output
Short-circuit current response, short applied to powered-on 12-V xVPP switch output
OC response with ramped load on 5-V xVCC switch output
4
5
6
7
OC response with ramped load on 12-V xVPP switch output
†
Timing tests are conducted at free-air temperature, V
I(5V)
= 5 V, V
I(3.3V)
= 3.3 V, V = 12 V, C = 0.1 µF on each output, STBY floating.
I(12V) L
9
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS2214
DUAL-SLOT PC CARD POWER-INTERFACE SWITCH
FOR SERIAL PCMCIA CONTROLLERS
SLVS206B – JULY 1999 – REVISED JUNE 2000
PARAMETER MEASUREMENT INFORMATION
V
O(OC)
V
O(OC)
5 V/div
5 V/div
I
I
O(VPP)
5 A/div
O(VCC)
5 A/div
0
0
200
400
600
800
1000
200
400
600
800
1000
t – Time – µs
t – Time – µs
Figure 4. Short-Circuit Response, Short Applied
to Powered-On 5-V xVCC-Switch Output
Figure 5. Short-Circuit Response, Short Applied
to Powered-On 12-V xVPP-Switch Output
V
V
O(OC)
O(OC)
5 V/div
5 V/div
I
I
O(VPP)
O(VCC)
1 A/div
0.2 A/div
0
0
4
8
12
16
20
10
20
30
40
50
t – Time – ms
t – Time – ms
Figure 6. OC Response With Ramped Load
on 5-V xVCC-Switch Output
Figure 7. OC Response With Ramped Load on
12-V xVPP-Switch Output
10
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS2214
DUAL-SLOT PC CARD POWER-INTERFACE SWITCH
FOR SERIAL PCMCIA CONTROLLERS
SLVS206B – JULY 1999 – REVISED JUNE 2000
TYPICAL CHARACTERISTICS
Table of Graphs
FIGURE
8
t
t
t
t
t
t
t
t
t
t
t
t
Turnon propagation delay time, 3.3-V xVCC switch
vs Load capacitance
vs Load capacitance
vs Load capacitance
vs Load capacitance
vs Load capacitance
vs Load capacitance
vs Load capacitance
vs Load capacitance
vs Load capacitance
vs Load capacitance
vs Load capacitance
vs Load capacitance
vs Junction temperature
vs Junction temperature
vs Junction temperature
vs Junction temperature
vs Junction temperature
vs Junction temperature
vs Junction temperature
vs Load current
pd(on)
Turnoff propagation delay time, 3.3-V xVCC switch
Turnon propagation delay time, 5-V xVCC switch
Turnoff propagation delay time, 5-V xVCC switch
Turnon propagation delay time, 12-V xVPP switch
Turnoff propagation delay time, 12-V xVPP switch
Rise time, 3.3-V xVCC switch
9
pd(off)
10
11
pd(on)
pd(off)
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
pd(on)
pd(off)
r
f
r
f
r
f
Fall time, 3.3-V xVCC switch
Rise time, 5-V xVCC switch
Fall time, 5-V xVCC switch
Rise time, 12-V xVPP switch
Fall time, 12-V xVPP switch
Input current at V
Input current at V
Input current at V
= V
= V
=3.3 V
=5 V
O(xVCC)
O(xVCC)
O(xVCC)
O(xVPP)
O(xVPP)
I
I
= 5 V, V
=12 V
O(xVPP)
Static drain-source on-state resistance, 3.3-V xVCC switch (V
Static drain-source on-state resistance, 3.3-V xVCC switch
Static drain-source on-state resistance, 5-V xVCC switch
Static drain-source on-state resistance, 12-V xVPP switch
=0)
I(5V)
r
DS(on)
dc input-to-output voltage (drop), 3.3-V xVCC switch (V
dc input-to-output voltage (drop), 3.3-V xVCC switch
dc input-to-output voltage (drop), 5-V xVCC switch
dc input-to-output voltage (drop), 12-V xVPP switch
Short-circuit current limit, 3.3-V xVCC switch
Short-circuit current limit, 5-V xVCC switch
=0)
I(5V)
V
V
vs Load current
IO(xVCC)
vs Load current
vs Load current
IO(xVPP)
vs Junction temperature
vs Junction temperature
vs Junction temperature
I
OS
Short-circuit current limit, 12-V xVPP switch
NOTE: Electrical characteristics tests are conducted at V
(unless otherwise noted on Figures).
= 5 V, V
I(3.3V)
= 3.3 V, V
I(12V)
= 12 V, C = 0.1 µF on each output, STBY floating
I(5V)
L
11
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS2214
DUAL-SLOT PC CARD POWER-INTERFACE SWITCH
FOR SERIAL PCMCIA CONTROLLERS
SLVS206B – JULY 1999 – REVISED JUNE 2000
TYPICAL CHARACTERISTICS
TURNON PROPAGATION DELAY TIME,
3.3-V xVCC SWITCH
vs
TURNOFF PROPAGATION DELAY TIME,
3.3-V xVCC SWITCH
vs
LOAD CAPACITANCE
LOAD CAPACITANCE
1.4
1.2
1
14
12
T
J
= 125°C
T
J
= 85°C
T
J
= 25°C
T
J
= 125°C
T
J
= 0°C
T
J
= 85°C
0.8
10
8
T
J
= 25°C
T
J
= –40°C
0.6
T
J
= 0°C
T
J
= –40°C
0.4
0.2
dc Load = 1 A
100 1000
dc Load = 1 A
100 1000
6
0.1
1
10
0.1
1
10
C
– Load Capacitance – µF
L
C
– Load Capacitance – µF
L
Figure 8
Figure 9
TURNON PROPAGATION DELAY TIME,
5-V xVCC SWITCH
TURNOFF PROPAGATION DELAY TIME,
5-V xVCC SWITCH
vs
vs
LOAD CAPACITANCE
LOAD CAPACITANCE
1.6
1.4
1.2
1
14
12
10
T
= 125°C
J
T
J
= 125°C
T
= 25°C
J
T
= –40°C
J
T
J
= 85°C
T
J
= –40°C
T = 85°C
J
T
J
= 0°C
T
J
= 25°C
T
J
= 0°C
0.8
0.6
8
6
0.4
0.2
dc Load = 1 A
100 1000
dc Load = 1 A
100 1000
0.1
1
10
0.1
1
10
C
– Load Capacitance – µF
C
– Load Capacitance – µF
L
L
Figure 10
Figure 11
12
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS2214
DUAL-SLOT PC CARD POWER-INTERFACE SWITCH
FOR SERIAL PCMCIA CONTROLLERS
SLVS206B – JULY 1999 – REVISED JUNE 2000
TYPICAL CHARACTERISTICS
TURNON PROPAGATION DELAY TIME,
12-V xVPP SWITCH
vs
TURNOFF PROPAGATION DELAY TIME dc,
12-V xVPP SWITCH
vs
LOAD CAPACITANCE
LOAD CAPACITANCE
6
5
4
16
T
J
= 125°C
14
12
10
T
= 85°C
J
T
= 0°C
J
T
J
= –40°C
3
2
T
= 0°C
J
T = 25°C
J
T
J
= 25°C
T
J
= –40°C
T
J
= 85°C
T
J
= 125°C
8
6
1
0
dc Load = 50 mA
100 1000
dc Load = 50 mA
100 1000
0.1
1
10
0.1
1
10
C
– Load Capacitance – µF
L
C
– Load Capacitance – µF
L
Figure 12
Figure 13
FALL TIME, 3.3-V xVCC SWITCH
RISE TIME, 3.3-V xVCC SWITCH
vs
vs
LOAD CAPACITANCE
LOAD CAPACITANCE
2
3.5
3
T
= 125°C
J
1.8
1.6
1.4
1.2
T
J
= 85°C
T
= 25°C
T
J
= 125°C
J
2.5
2
T
J
= 85°C
T
J
= 0°C
1
T
= –40°C
J
T
= 25°C
T
J
= 0°C
J
1.5
T
J
= –40°C
0.8
0.6
0.4
1
0.5
0
0.2
0
dc Load = 1 A
100 1000
dc Load = 1 A
100 1000
0.1
1
10
0.1
1
10
C
– Load Capacitance – µF
C
– Load Capacitance – µF
L
L
Figure 14
Figure 15
13
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS2214
DUAL-SLOT PC CARD POWER-INTERFACE SWITCH
FOR SERIAL PCMCIA CONTROLLERS
SLVS206B – JULY 1999 – REVISED JUNE 2000
TYPICAL CHARACTERISTICS
FALL TIME, 5-V xVCC SWITCH
vs
RISE TIME, 5-V xVCC SWITCH
vs
LOAD CAPACITANCE
LOAD CAPACITANCE
1.8
1.6
4
3.5
3
T
J
= 85°C
T
J
= 125°C
1.4
1.2
T
J
= 125°C
2.5
2
T
J
= 0°C
T
J
= 85°C
1
T
J
= –40°C
0.8
0.6
T
J
= 25°C
T
J
= 25°C
T
J
= 0°C
T
J
= –40°C
1.5
1
0.4
0.5
0
0.2
0
dc Load = 1 A
100 1000
dc Load = 1 A
100 1000
0.1
1
10
0.1
1
10
C
– Load Capacitance – µF
C
– Load Capacitance – µF
L
L
Figure 16
Figure 17
FALL TIME, 12-V xVPP SWITCH
RISE TIME, 12-V xVPP SWITCH
vs
vs
LOAD CAPACITANCE
LOAD CAPACITANCE
5
4.5
4
20
18
T
= 125°C
J
T
= 85°C
J
16
14
12
T
J
= 25°C
3.5
3
T
= 0°C
10
8
J
2.5
2
T
J
= –40°C
T
= –40°C
J
T
J
= 125°C
1.5
6
4
T
= 0°C
J
T
= 85°C
J
1
T
J
= 25°C
.5
0
2
0
dc Load = 50 mA
100 1000
dc Load = 50 mA
100 1000
0.1
1
10
0.1
1
10
C
– Load Capacitance – µF
C
– Load Capacitance – µF
L
L
Figure 18
Figure 19
14
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS2214
DUAL-SLOT PC CARD POWER-INTERFACE SWITCH
FOR SERIAL PCMCIA CONTROLLERS
SLVS206B – JULY 1999 – REVISED JUNE 2000
TYPICAL CHARACTERISTICS
INPUT CURRENT AT V
= V
= 3.3 V
INPUT CURRENT AT V
= V
= 5 V
O(xVCC)
vs
O(xVPP)
O(xVCC)
vs
O(xVPP)
JUNCTION TEMPERATURE
JUNCTION TEMPERATURE
I(5V)
100
90
120
110
100
90
I
I
I(5V)
80
70
80
70
60
50
40
30
20
60
50
40
30
20
I
I(3.3V)
I
I(12V)
10
10
0
0
I
I
I(12V)
I(3.3V)
–10
–50
0
50
100
150
–50
0
50
100
150
T
J
– Junction Temperature – °C
T
J
– Junction Temperature – °C
Figure 20
Figure 21
STATIC DRAIN-SOURCE ON-STATE RESISTANCE,
INPUT CURRENT AT V
= 5 V, V
= 12 V
O(xVPP)
3.3-V xVCC SWITCH
O(xVCC)
vs
vs
JUNCTION TEMPERATURE
0.09
JUNCTION TEMPERATURE
120
110
100
I
I(5V)
0.08
0.07
90
80
70
60
50
0.06
0.05
0.04
0.03
40
I
30
20
I(12V)
0.02
dc Load = 1 A
10
V
I(5V)
= 0
I
0.01
0
I(3.3V)
0
–10
–50
0
50
100
150
–50
0
50
100
150
T
J
– Junction Temperature – °C
T
J
– Junction Temperature – °C
Figure 22
Figure 23
15
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS2214
DUAL-SLOT PC CARD POWER-INTERFACE SWITCH
FOR SERIAL PCMCIA CONTROLLERS
SLVS206B – JULY 1999 – REVISED JUNE 2000
TYPICAL CHARACTERISTICS
STATIC DRAIN-SOURCE ON-STATE RESISTANCE,
STATIC DRAIN-SOURCE ON-STATE RESISTANCE,
5-V xVCC SWITCH
3.3-V xVCC SWITCH
vs
JUNCTION TEMPERATURE
0.1
vs
JUNCTION TEMPERATURE
0.09
0.09
0.08
0.07
0.06
0.05
0.08
0.07
0.06
0.05
0.04
0.03
0.04
0.03
0.02
0.02
dc Load = 1 A
0.01
0
0.01
0
dc Load = 1 A
100 150
0
0
50
–50
0
50
100
150
T
J
– Junction Temperature – °C
T
J
– Junction Temperature – °C
Figure 25
Figure 24
STATIC DRAIN-SOURCE ON-STATE RESISTANCE,
dc INPUT-TO-OUTPUT VOLTAGE (DROP),
12-V xVPP SWITCH
vs
JUNCTION TEMPERATURE
3.3-V xVCC SWITCH
vs
LOAD CURRENT
0.1
0.09
0.08
1
0.9
0.8
V
I(5V)
= 0 V
125°C
85°C
25°C
0°C
0.07
0.06
0.7
0.6
0.5
–40°C
0.05
0.04
0.03
0.02
0.4
0.3
0.2
0.01
0
0.1
0
dc Load = 50 mA
100
0
0.2
0.4
0.6
0.8
1
–50
0
50
150
I
L
– Load Current – A
T
J
– Junction Temperature – °C
Figure 26
Figure 27
16
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS2214
DUAL-SLOT PC CARD POWER-INTERFACE SWITCH
FOR SERIAL PCMCIA CONTROLLERS
SLVS206B – JULY 1999 – REVISED JUNE 2000
TYPICAL CHARACTERISTICS
dc INPUT-TO-OUTPUT VOLTAGE (DROP),
dc INPUT-TO-OUTPUT VOLTAGE (DROP),
3.3-V xVCC SWITCH
vs
5-V xVCC SWITCH
vs
LOAD CURRENT
LOAD CURRENT
0.1
0.09
0.08
0.1
0.09
0.08
125°C
125°C
85°C
85°C
25°C
25°C
0°C
0.07
0.06
0.07
0.06
0°C
–40°C
–40°C
0.05
0.04
0.03
0.02
0.05
0.04
0.03
0.02
0.01
0
0.01
0
0
0.2
0.4
0.6
0.8
1
0
0.2
0.4
0.6
0.8
1
I
– Load Current – A
I
L
– Load Current – A
Figure 28
L
Figure 29
dc INPUT-TO-OUTPUT VOLTAGE (DROP),
SHORT-CIRCUIT CURRENT LIMIT,
3.3-V xVCC SWITCH
vs
12-V xVPP SWITCH
vs
LOAD CURRENT
JUNCTION TEMPERATURE
0.06
0.05
1.9
125°C
85°C
1.85
25°C
0.04
1.8
1.75
1.7
0°C
–40°C
0.03
0.02
0.01
0
1.65
1.6
0
0.01
0.02
0.03
0.04
0.05
–50
0
50
100
150
I
L
– Load Current – A
T
J
– Junction Temperature – °C
Figure 30
Figure 31
17
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS2214
DUAL-SLOT PC CARD POWER-INTERFACE SWITCH
FOR SERIAL PCMCIA CONTROLLERS
SLVS206B – JULY 1999 – REVISED JUNE 2000
TYPICAL CHARACTERISTICS
SHORT-CIRCUIT CURRENT LIMIT, 5-V xVCC
SHORT-CIRCUIT CURRENT LIMIT, 12-V xVPP
SWITCH
SWITCH
vs
vs
JUNCTION TEMPERATURE
JUNCTION TEMPERATURE
1.9
0.4
1.85
1.8
0.38
0.36
1.75
1.7
0.34
0.32
0.3
1.65
1.6
–50
0
50
100
150
–50
0
50
100
150
T
J
– Junction Temperature – °C
T
J
– Junction Temperature – °C
Figure 32
Figure 33
APPLICATION INFORMATION
overview
PC Cards were initially introduced as a means to add EEPROM (flash memory) to portable computers with
limitedonboardmemory. Theideaofadd-incardsquicklytookhold;modems, wirelessLANs, GlobalPositioning
Satellite System (GPS), multimedia, and hard-disk versions were soon available. As the number of PC Card
applications grew, the engineering community quickly recognized the need for a standard to ensure
compatibility across platforms. To this end, the PCMCIA (Personal Computer Memory Card International
Association), comprising members from leading computer, software, PC Card, and semiconductor
manufacturers, was established. One key goal was to realize the plug-and-play concept. Cards and hosts from
different vendors should be compatible or able to communicate with one another transparently.
PC Card power specification
Systemcompatibilityalsomeanspowercompatibility. Themostcurrentsetofspecifications(PCCardStandard)
set forth by the PCMCIA committee states that power is to be transferred between the host and the card through
eight of the 68 terminals of the PC Card connector. This power interface consists of two V , two V , and four
CC
pp
ground terminals. Multiple V
and ground terminals minimize connector terminal and line resistance. The two
CC
V
terminals were originally specified as separate signals, but are commonly tied together in the host to form
a single node to minimize voltage losses. Card primary power is supplied through the V
pp
terminals;
CC
flash-memory programming and erase voltage is supplied through the V terminals.
pp
18
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS2214
DUAL-SLOT PC CARD POWER-INTERFACE SWITCH
FOR SERIAL PCMCIA CONTROLLERS
SLVS206B – JULY 1999 – REVISED JUNE 2000
APPLICATION INFORMATION
designing for voltage regulation
The current PCMCIA specification for output voltage regulation, V
atypicalPCpower-systemdesign,thepowersupplyhasanoutput-voltageregulation,V
Also, a voltage drop from the power supply to the PC Card will result from resistive losses, V
traces and the PCMCIA connector. A typical design would limit the total of these resistive losses to less than
, of the 5-V output is 5% (250 mV). In
O(reg)
,of2%(100mV).
PS(reg)
, in the PCB
PCB
1% (50 mV) of the output voltage. Therefore, the allowable voltage drop, V , for the TPS2214 would be the
DS
PCMCIA voltage regulation less the power supply regulation and less the PCB and connector resistive drops:
V
V
–V
–V
DS
O(reg) PS(reg) PCB
Typically, this would leave 100 mV for the allowable voltage drop across the 5-V switch. The specification for
output voltage regulation of the 3.3-V output is 300 mV; so, using the same equation by deducting the voltage
drop percentages (2%) for power-supply regulation and PCB resistive loss (1%), the allowable voltage drop for
the 3.3-V switch is 200 mV. The voltage drop is the output current multiplied by the switch resistance of the
TPS2214. Therefore, the maximum output current, I max, that can be delivered to the PC Card in regulation
O
is the allowable voltage drop across the IC, divided by the output-switch resistance.
V
DS
I max
r
O
DS(on)
The xVCC outputs can deliver 1 A continuously at 5 V and 3.3 V within regulation over the operating temperature
range. The xVPP outputs of the IC can deliver 200 mA continuously.
overcurrent and overtemperature protection
PC Cards are inherently subject to damage that can result from mishandling. Host systems require protection
against short-circuited cards that could lead to power-supply or PCB trace damage. Even systems robust
enough to withstand a short circuit would still undergo rapid battery discharge into the damaged PC Card,
resulting in the rather sudden and unacceptable loss of system power. Most hosts include fuses for protection.
However, the reliability of fused systems is poor, as blown fuses require troubleshooting and repair, usually by
the manufacturer.
TheTPS2214takesatwo-prongedapproachtoovercurrentprotection, whichisdesignedtoactivateifanoutput
is shorted or when an overcurrent condition is present when switches are powered up. First, instead of fuses,
senseFETsmonitoreachofthexVCCandxVPPpoweroutputs. Unlikesenseresistorsorpolyfuses, theseFETs
do not add to the series resistance of the switch; therefore voltage and power losses are reduced. Overcurrent
sensing is applied to each output separately. Excessive current generates an error signal that limits the output
current of only the affected output, preventing damage to the host. Each xVCC output overcurrent limits from
1 A to 2.2 A, typically around 1.6 A; the xVPP outputs limit from 250 mA to 500 mA, typically around 375 mA.
Second, when an overcurrent condition is detected, the TPS2214 asserts an active low OC signal that can be
monitored by the microprocessor or controller to initiate diagnostics and/or send the user a warning message.
In the event that an overcurrent condition persists, causing the IC to exceed its maximum junction temperature,
thermal-protection circuitry activates. This shuts down all power outputs until the device cools to within a safe
operating region, which is ensured by a thermal shutdown hysteresis.
19
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS2214
DUAL-SLOT PC CARD POWER-INTERFACE SWITCH
FOR SERIAL PCMCIA CONTROLLERS
SLVS206B – JULY 1999 – REVISED JUNE 2000
APPLICATION INFORMATION
12-V supply not required
Many PC Card switches use the externally supplied 12 V to power gate drive and other chip functions; this
requiresthatpowerbepresentatalltimes. TheTPS2214offersconsiderablepowersavingsbyusinganinternal
charge pump to generate the required higher gate drive voltages from the 5-V or 3.3-V power supplies.
Therefore, the external 12-V supply can be disabled except when needed for flash-memory functions, thereby
extending battery lifetime. Additional power savings are realized by the IC during shutdown mode, in which
quiescent current drops to a maximum of 1 µA.
3.3-V low-voltage mode
The TPS2214 will operate in 3.3-V low-voltage mode when 3.3 V is the only available input voltage (V
= 0,
I(5V)
V
= 0). ThisfeatureallowshostandPCCardstobeoperatedinlow-power3.3-V-onlymodessuchassleep
I(12V)
modes. Note that in this operation mode, the IC will derive its bias current from the 3.3-V input pin and can only
provide 3.3 V to the outputs.
voltage transitioning requirement
PC Cards are migrating from 5 V to 3.3 V to minimize power consumption, optimize board space, and increase
logic speeds. The TPS2214 meets all combinations of power delivery as currently defined in the PCMCIA
standard. The latest protocol accommodates mixed 3.3-V/5-V systems by first powering the card with 5 V, then
polling it to determine its 3.3-V compatibility. The PCMCIA specification requires that the capacitors on
3.3-V-compatible cards be discharged to below 0.8 V before applying 3.3-V power. This action ensures that
sensitive 3.3-V circuitry is not subjected to any residual 5-V charge and functions as a power reset. PC Card
specification requires that V be discharged within 100 ms. PC Card resistance can not be relied on to provide
CC
a discharge path for voltages stored on PC Card capacitance because of possible high-impedance isolation by
power-management schemes. The TPS2214 includes discharge transistors on all xVCC and xVPP outputs to
meet the specification requirement.
shutdown mode
In the shutdown mode, which can be controlled by bit D8 of the input serial DATA word, each of the xVCC and
xVPP outputs is forced to a high-impedance state. In this mode, the chip quiescent current is limited to 1 µA
or less to conserve battery power.
standby mode
The TPS2214 can be put in standby mode by pulling STBY low to conserve power during low-power operation.
In this mode, all of the power outputs (xVCC and xVPP) will have a nominal current limit of 50 mA. STBY has
an internal 150-kΩ pullup resistor. The output-switch status of the device must be set, allowing the output
capacitors to charge, prior to enabling the standby mode. Changing the setting of the output switches with the
device in standby mode may cause an overcurrent response to be generated.
mode
The mode pin programs the switches in either TPS2214 or TPS2206 mode. An internal 150-kΩ pulldown
resistor is connected to the pin. Floating or pulling the mode pin low sets the switches in TPS2206 mode; pulling
the mode pin high sets the switches in TPS2214 mode. In TPS2206 mode, xVPP outputs are dependent on
xVCC outputs. In TPS2214 mode, xVPP is programmed independent of xVCC. Refer to TPS2214 control-logic
tables for more information.
20
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS2214
DUAL-SLOT PC CARD POWER-INTERFACE SWITCH
FOR SERIAL PCMCIA CONTROLLERS
SLVS206B – JULY 1999 – REVISED JUNE 2000
APPLICATION INFORMATION
power supply considerations
The TPS2214 has multiple pins for each of its 3.3-V and 5-V power inputs and for the switched xVCC outputs.
Any individual pin can conduct the rated input or output current. Unless all pins are connected in parallel, the
series resistance is higher than that specified, resulting in increased voltage drops and less power. It is
recommended that all input and output power pins be paralleled for optimum operation. Because the two 12-V
pins are not internally connected, they must be tied together externally.
To increase the noise immunity of the TPS2214, the power-supply inputs should be bypassed with a 1-µF
electrolytic or tantalum capacitor paralleled by a 0.047-µF to 0.1-µF ceramic capacitor. It is strongly
recommended that the switched outputs be bypassed with a 0.1-µF (or larger) ceramic capacitor; doing so
improves the immunity of the IC to electrostatic discharge (ESD). Care should be taken to minimize the
inductance of PCB traces between the IC and the load. High switching currents can produce large negative
voltage transients, which forward biases substrate diodes, resulting in unpredictable performance. Similarly, no
pin should be taken, or allowed to fall, below –0.3 V.
RESET and RESET inputs
To ensure that cards are in a known state after power brownouts or system initialization, the PC Cards should
be reset at the same time as the host by applying low impedance paths from xVCC and xVPP terminals to
ground. A low-impedance output state allows discharging of residual voltage remaining on PC Card filter
capacitance, permitting the system (host and PC Cards) to be powered up concurrently. Theactive-highRESET
or active low RESET input will close internal switches S1, S4, S7, and S11 with all other switches left open. The
TPS2214 remains in the low-impedance output state until the signal is deasserted and further data is clocked
in and latched. The input serial data can not be latched during Reset mode. RESET and RESET are provided
for direct compatibility with systems that use either an active-low or active-high reset voltage supervisor. The
RESET pin has an internal 150-kΩ pulldown resistor and the RESET pin has an internal 150-kΩ pullup resistor.
The device will be reset automatically when powered up.
calculating junction temperature
Theswitchresistance,r
,isdependentonthejunctiontemperature,T ,ofthedie.Thejunctiontemperature
J
DS(on)
isdependentonbothr
andthecurrentthroughtheswitch.TocalculateT ,firstfindr
fromFigures 23
DS(on)
J
DS(on)
through 26, using an initial temperature estimate about 50°C above ambient. Then calculate the power
dissipation for each switch, using the formula:
2
P
r
I
D
DS(on)
Next, sum the power dissipation of all switches and calculate the junction temperature:
T
P
R
T
J
D
JA
A
Where:
R
is the inverse of the derating factor given in the dissipation rating table.
θJA
Compare the calculated junction temperature with the initial temperature estimate. If the temperatures are not
within a few degrees of each other, recalculate using the calculated temperature as the initial estimate.
logic inputs and outputs
The serial interface consists of DATA, CLOCK, and LATCH leads. The data is clocked in on the positive edge
of the clock (see Figures 2 and 3). The 11-bit (D0–D10) serial data word is loaded during the positive edge of
the latch signal. The positive edge of the latch signal should occur before the next positive edge of the clock
occurs.
21
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS2214
DUAL-SLOT PC CARD POWER-INTERFACE SWITCH
FOR SERIAL PCMCIA CONTROLLERS
SLVS206B – JULY 1999 – REVISED JUNE 2000
APPLICATION INFORMATION
logic inputs and outputs (continued)
The TPS2214 serial interfaces are compatible with serial-interface PCMCIA controllers and current PCMCIA
and Japan Electronic Industry Development Association (JEIDA) standards.
An overcurrent output (OC) is provided to indicate an overcurrent or overtemperature condition in any of the
xVCC and xVPP outputs as previously discussed.
TPS2214 control logic
TPS2214 mode (MODE pulled high)
xVPP
AVPP CONTROL SIGNALS
BVPP CONTROL SIGNALS
OUTPUT
V_AVPP
OUTPUT
V_BVPP
D8 (SHDN)
D0
D1
0
D9
D8 (SHDN)
D4
0
D5
0
D10
X
1
1
1
1
1
0
0
0
0
1
1
X
X
0
0 V
3.3 V
5 V
1
1
1
1
1
0
0 V
3.3 V
5 V
1
0
1
0
1
1
0
1
1
0
X
X
X
12 V
Hi-Z
Hi-Z
1
0
X
12 V
Hi-Z
Hi-Z
1
1
1
X
X
X
X
X
xVCC
AVCC CONTROL SIGNALS
BVCC CONTROL SIGNALS
OUTPUT
V_AVCC
OUTPUT
V_BVCC
D8 (SHDN)
D3
0
D2
0
D8 (SHDN)
D6
0
D7
0
1
1
1
1
0
0 V
3.3 V
5 V
1
1
1
1
0
0 V
3.3 V
5 V
0
1
0
1
1
0
1
0
1
1
0 V
1
1
0 V
X
X
Hi-Z
X
X
Hi-Z
TPS2206 mode (MODE floating or pulled low)
xVPP
AVPP CONTROL SIGNALS
BVPP CONTROL SIGNALS
OUTPUT
V_AVPP
OUTPUT
V_BVPP
D8 (SHDN)
D0
0
D1
0
D8 (SHDN)
D4
0
D5
0
1
1
1
1
0
0 V
V_AVCC
12 V
1
1
1
1
0
0 V
V_BVCC
12 V
0
1
0
1
1
0
1
0
1
1
Hi-Z
1
1
Hi-Z
X
X
Hi-Z
X
X
Hi-Z
xVCC
AVCC CONTROL SIGNALS
BVCC CONTROL SIGNALS
OUTPUT
V_AVCC
OUTPUT
V_BVCC
D8 (SHDN)
D3
0
D2
0
D8 (SHDN)
D6
0
D7
0
1
1
1
1
0
0 V
3.3 V
5 V
1
1
1
1
0
0 V
3.3 V
5 V
0
1
0
1
1
0
1
0
1
1
0 V
1
1
0 V
X
X
Hi-Z
X
X
Hi-Z
22
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS2214
DUAL-SLOT PC CARD POWER-INTERFACE SWITCH
FOR SERIAL PCMCIA CONTROLLERS
SLVS206B – JULY 1999 – REVISED JUNE 2000
APPLICATION INFORMATION
ESD protections (see Figure 34)
All TPS2214 inputs and outputs incorporate ESD-protection circuitry designed to withstand a 2-kV
human-body-model discharge as defined in MIL-STD-883C, Method 3015. The xVCC and xVPP outputs can
be exposed to potentially higher discharges from the external environment through the PC Card connector.
Bypassing the outputs with 0.1-µF capacitors protects the devices from discharges up to 10 kV.
TPS2214
AVCC
AVCC
V
V
CC
†
0.1 µF
CC
PC Card
Connector A
pp1
V
V
AVPP
†
0.1 µF
pp2
12V
12V
BVCC
BVCC
V
V
12V
5V
CC
†
10 µF
33 µF
0.1 µF
0.1 µF
0.1 µF
CC
PC Card
Connector B
pp1
5V
5V
V
V
BVPP
†
0.1 µF
pp2
5V
3.3V
3.3V
3.3V
33 µF
0.1 µF
Controller
DATA
DATA
CLOCK
LATCH
RESET
RESET
OC
CLOCK
LATCH
MODE
STBY
From PCI or
System RST
GPI/O
†
Maximum recommended output capacitance for xVCC is 220 µF and for xVPP is 10 µF without OC glitch when switches are powered on.
Figure 34. Detailed Interconnections and Capacitor Recommendations
23
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS2214
DUAL-SLOT PC CARD POWER-INTERFACE SWITCH
FOR SERIAL PCMCIA CONTROLLERS
SLVS206B – JULY 1999 – REVISED JUNE 2000
APPLICATION INFORMATION
12-V flash memory supply
The TPS6734 is a fixed 12-V output boost converter capable of delivering 120 mA from inputs as low as 2.7 V.
The device is pin-for-pin compatible with the MAX734 regulator and offers the following advantages: lower
supply current, wider operating input-voltage range, and higher output currents. As shown in Figure 35, the only
external components required are: an inductor, a Schottky rectifier, an output filter capacitor, an input filter
2
capacitor, and a small capacitor for loop compensation. The entire converter occupies less than 0.7 in of PCB
space when implemented with surface-mount components. An enable input is provided to shut the converter
down and reduce the supply current to 3 µA when 12 V is not needed.
The TPS6734 is a 170-kHz current-mode PWM (pulse-width modulation) controller with an n-channel MOSFET
power switch. Gate drive for the switch is derived from the 12-V output after start-up to minimize the die area
needed to realize the 0.7-Ω MOSFET and improve efficiency at input voltages below 5 V. Soft start is
accomplished with the addition of one small capacitor. A 1.22-V reference (pin 2) is brought out for external use.
For additional information, see the TPS6734 data sheet (SLVS127).
TPS2214
AVCC
AVCC
3.3V or 5V
R1
10 kΩ
TPS6734
ENABLE
(see Note A)
1
8
L1
18 µH
EN
VCC
2
3
7
6
AVPP
REF
SS
FB
C1
33 µF
20V
+
D1
OUT
33 µF, 20 V
4
5
12 V
COMP
GND
12V
12V
C2
0.01 µF
+
C1
0.1 µF
BVCC
BVCC
5 V
C4
0.001 µF
5V
5V
33 µF
33 µF
0.1 µF
0.1 µF
BVPP
5V
3.3 V
3.3V
3.3V
DATA
CLOCK
LATCH
RESET
RESET
OC
MODE
STBY
NOTE A: The enable terminal can be tied to a general-purpose I/O terminal on the PCMCIA controller or tied high.
Figure 35. TPS2214 with TPS6734 12-V, 120-mA Supply
24
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
IMPORTANT NOTICE
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements,
and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should
obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are
sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment.
TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard
warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where
mandated by government requirements, testing of all parameters of each product is not necessarily performed.
TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and
applications using TI components. To minimize the risks associated with customer products and applications, customers should provide
adequate design and operating safeguards.
TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask work right,
or other TI intellectual property right relating to any combination, machine, or process in which TI products or services are used. Information
published by TI regarding third-party products or services does not constitute a license from TI to use such products or services or a
warranty or endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual
property of the third party, or a license from TI under the patents or other intellectual property of TI.
Reproduction of TI information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied
by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an unfair and deceptive
business practice. TI is not responsible or liable for such altered documentation. Information of third parties may be subject to additional
restrictions.
Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all
express and any implied warranties for the associated TI product or service and is an unfair and deceptive business practice. TI is not
responsible or liable for any such statements.
TI products are not authorized for use in safety-critical applications (such as life support) where a failure of the TI product would reasonably
be expected to cause severe personal injury or death, unless officers of the parties have executed an agreement specifically governing
such use. Buyers represent that they have all necessary expertise in the safety and regulatory ramifications of their applications, and
acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products
and any use of TI products in such safety-critical applications, notwithstanding any applications-related information or support that may be
provided by TI. Further, Buyers must fully indemnify TI and its representatives against any damages arising out of the use of TI products in
such safety-critical applications.
TI products are neither designed nor intended for use in military/aerospace applications or environments unless the TI products are
specifically designated by TI as military-grade or "enhanced plastic." Only products designated by TI as military-grade meet military
specifications. Buyers acknowledge and agree that any such use of TI products which TI has not designated as military-grade is solely at
the Buyer's risk, and that they are solely responsible for compliance with all legal and regulatory requirements in connection with such use.
TI products are neither designed nor intended for use in automotive applications or environments unless the specific TI products are
designated by TI as compliant with ISO/TS 16949 requirements. Buyers acknowledge and agree that, if they use any non-designated
products in automotive applications, TI will not be responsible for any failure to meet such requirements.
Following are URLs where you can obtain information on other Texas Instruments products and application solutions:
Products
Applications
Audio
Amplifiers
amplifier.ti.com
dataconverter.ti.com
www.dlp.com
www.ti.com/audio
Data Converters
DLP® Products
Automotive
www.ti.com/automotive
www.ti.com/communications
Communications and
Telecom
DSP
dsp.ti.com
Computers and
Peripherals
www.ti.com/computers
Clocks and Timers
Interface
www.ti.com/clocks
interface.ti.com
logic.ti.com
Consumer Electronics
Energy
www.ti.com/consumer-apps
www.ti.com/energy
Logic
Industrial
www.ti.com/industrial
Power Mgmt
Microcontrollers
RFID
power.ti.com
Medical
www.ti.com/medical
microcontroller.ti.com
www.ti-rfid.com
Security
www.ti.com/security
Space, Avionics &
Defense
www.ti.com/space-avionics-defense
RF/IF and ZigBee® Solutions www.ti.com/lprf
Video and Imaging
Wireless
www.ti.com/video
www.ti.com/wireless-apps
Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265
Copyright © 2010, Texas Instruments Incorporated
相关型号：
©2020 ICPDF网 联系我们和版权申明