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参数资料
| 型号： | TPS40422RHAT |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | DUAL SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, QCC40 |
| 封装： | 6 X 6 MM, VQFN-40 |
| 文件页数： | 12/12页 |
| 文件大小： | 205K |
| 代理商： | TPS40422RHAT |
PRODUCTPREVIEW
SLUSAQ4
– OCTOBER 2011
PIN FUNCTIONS (continued)
PIN
NO.
I/O
DESCRIPTION
Inverting input of the error amplifier for CH1. Connect a voltage divider to FB1 between DIFFO1 and
FB1
2
I
AGND to program the output voltage for CH1.
Inverting input of the error amplifier for CH2. Connect a voltage divider to FB2 between VSNS2 and
FB2
8
I
GSNS2 to program the output voltage for CH2. For two-phase operation, use FB1 to program the output
voltage and connect FB2 to BP6.
GSNS1
38
I
Negative terminal of the differential remote sense amplifier for CH1.
GSNS2
14
I
Negative terminal of the differential remote sense amplifier for CH2.
HDRV1
29
O
Bootstrapped gate drive output for the high-side N-channel MOSFET for CH1.
HDRV2
21
O
Bootstrapped gate drive output for the high-side N-channel MOSFET for CH2.
LDRV1
27
O
Gate drive output for the low side synchronous rectifier (SR) N-channel MOSFET for CH1.
LDRV2
23
O
Gate drive output for the low-side synchronous rectifier N-channel MOSFET for CH2.
PGND
26
—
Power GND.
PG1
33
O
Open drain power good indicator for CH1 output voltage.
PG2
19
O
Open drain power good indicator for CH2 output voltage.
RT
1
I
Frequency programming pin. Connect a resistor from this pin to AGND to set the oscillator frequency.
SMBALRT
13
O
Alert output for the PMBus interface. Pull up to 3.3 V with a resistor.
SW1
28
I
Return of the high-side gate driver for CH1. Connect to the switched node for CH1.
SW2
22
I
Return of the high-side gate driver for CH2. Connect to the switched node for CH2.
Logic level input for external clock synchronization. When an external clock is applied to this pin, the
SYNC
40
I
oscillator frequency sychronizes to one half of its frequency.
TSNS1
36
I
External temperature sense input for CH1.
TSNS2
16
I
External temperature sense input for CH2.
Power input to the controller. Connect a low ESR, 100 nF or larger ceramic capacitor from this pin to
VDD
31
I
AGND.
VSNS1
37
I
Positive terminal of the differential remote sense amplifier for CH1.
VSNS2
15
I
Positive terminal of the differential remote sense amplifier for CH2.
Copyright
2011, Texas Instruments Incorporated
9
Product Folder Link(s) :TPS40422
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