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TPS40322 Datasheet(PDF) 22 Page - Texas Instruments

Part No. TPS40322
Description  Dual Output or Two-Phase Synchronous Buck Controller
Download  47 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPS40322 Datasheet(HTML) 22 Page - Texas Instruments

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ON1
VIN _ HYS
15 A R
(
)
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ö
+
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´ ç
÷
ç
÷
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ø
ON1
ON2
ON2
R
R
VIN _ UVLO
1.24 V
R
UDG-11118
UVLO
RON2
RON1
VIN
+
TPS40322
VIN_OK
15 mA
TPS40322
SLUSAF8E – JULY 2011 – REVISED JANUARY 2016
www.ti.com
Figure 22. Input UVLO Diagram
(6)
(7)
7.3.11 Power Good
The TPS40322 provides an indication that output is good for each channel. This is an open-drain signal that pulls
low when any condition exists that would indicate that the output of the supply might be out of regulation. These
conditions include:
Feedback voltage (VFB) is more than ±12.5% from nominal
Soft-start is active
7.3.12 Thermal Shutdown
If the junction temperature of the device reaches the thermal shutdown limit of 150°C, the PWMs and the
oscillators are turned off and HDRVs and LDRVs are driven low. When the junction cools to the required level
(130°C typical), the PWM initiates soft start as during a normal power-up cycle.
22
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Product Folder Links: TPS40322


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