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參數(shù)資料
| 型號： | TPS40090QPWRQ1 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, 1200 kHz SWITCHING FREQ-MAX, PDSO24 |
| 封裝： | GREEN, PLASTIC, TSSOP-24 |
| 文件頁數(shù)： | 19/23頁 |
| 文件大小： | 309K |
| 代理商： | TPS40090QPWRQ1 |
SLUS845C
– JUNE 2008 – REVISED MAY 2011
Terminal Functions
TERMINAL
I/O
DESCRIPTION
NAME
NO.
Output of an internal 5-V regulator. A 4.7-
μF capacitor should be connected from this pin to ground.
BP5
22
O
For 5-V applications, this pin should be connected to VDD.
COMP
9
O
Output of the error amplifier. The voltage at this pin determines the duty cycle for the PWM.
CS1
1
I
Used to sense the inductor current in the phases. Inductor current can be sensed with an external
CS2
2
I
current sense resistor or by using an external circuit and the inductor
's DC resistance. They are also
CS3
3
I
used for overcurrent protection and forced current sharing between the phases.
CS4
4
I
CSCN
5
I
Common point of current sense resistors or filter inductors
Output of the differential amplifier. The voltage at this pin represents the true output voltage without
DIFFO
11
O
drops that result from high current in the PCB traces
Used to program droop function. A resistor between this pin and the REF pin sets the desired droop
DROOP
7
I
value.
A logic high signal on this input enables the controller operation. A pulsing signal to this pin
synchronizes the main oscillator to the rising edge of an external clock source. These pulses must be
EN/SYNC
24
I
of higher frequency than the free running frequency of the main oscillator set by the resistor from the
RT pin.
Inverting input of the error amplifier. In closed loop operation, the voltage at this pin is the internal
FB
10
I
reference level of 700 mV. This pin is also used for the PGOOD and OVP comparators.
GND
17
Ground connection to the device.
GNDS
13
I
Inverting input of the differential amplifier. This pin should be connected to ground at the point of load.
Used to set the cycle-by-cycle current limit threshold. If ILIM threshold is reached, the PWM cycle is
terminated and the converter delivers limited current to the output. Under these conditions the
ILIM
6
I
undervoltage threshold is reached eventually and the controller enters the hiccup mode. The controller
stays in hiccup mode for seven consecutive cycles. At the eighth cycle the controller attempts a full
start-up sequence.
Power good indicator of the output voltage. This open-drain output connects to the supply via an
PGOOD
14
O
external resistor.
PWM1
21
O
Phase shifted PWM outputs which control the external drivers. The high output signal commands a
PWM2
20
O
PWM cycle. The low output signal commands controlled conduction of the synchronous rectifiers.
These pins are also used to program various operating modes as follows: for three-phase mode,
PWM3
19
O
PWM4 is connected to 5 V; for two-phase mode, PWM2 and PWM4 are connected to 5 V.
PWM4
18
O
REF
8
O
Output of an internal 0.7-V reference voltage.
RT
16
I
Connecting a resistor from this pin to ground sets the oscillator frequency.
VIN
23
I
Power input for the chip. Decoupling of this pin is required.
Noninverting input of the differential amplifier. This pin should be connected to VOUT at the point of
VOUT
12
I
load.
SS
15
I
Provides user programmable soft-start by means of a capacitor connected to the pin.
Copyright
2008–2011, Texas Instruments Incorporated
5
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| TPS40090RHDR | 功能描述:DC/DC 開關(guān)控制器 4 Ch Multiph Buck DC/DC Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| TPS40090RHDRG4 | 功能描述:DC/DC 開關(guān)控制器 4Ch Multiphase Buck DC/DC Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| TPS40090RHDT | 功能描述:DC/DC 開關(guān)控制器 4Ch Multiphase Buck DC/DC Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| TPS40090RHDTG4 | 功能描述:DC/DC 開關(guān)控制器 4Ch Multiphase Buck DC/DC Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| TPS40091 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:HIGH FREQUENCY MULTIPHASE CONTROLLER |
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