参数资料
型号: TPS65040ZQER
厂商: TEXAS INSTRUMENTS INC
元件分类: 电源管理
英文描述: 8-CHANNEL POWER SUPPLY MANAGEMENT CKT, PBGA71
封装: 5 X 5 MM, 0.50 MM PITCH, GREEN, PLASTIC, MICRO, BGA-71
文件页数: 60/73页
文件大小: 1928K
代理商: TPS65040ZQER
THERMAL PROTECTION
Thermal Shutdown
SLVS708B – NOVEMBER 2006 – REVISED APRIL 2007
When an abnormally high junction temperature (160
°C typical, or more) is detected, TPS65040 shuts off the
following three blocks, if they are turned on:
DC/DC converter
PAVREF
V11_V28TX
The other blocks do not shut off under abnormally high temperatures. If the junction temperature falls, thermal
shutdown is released (150
°C (typical)) these three blocks turn on immediately, and the DC/DC converter is
powered up through the softstart. The TPS65040 provides the read function for the thermal shutdown flag and
uses the serial interface as a means to inform the host of the thermal shutdown condition. When thermal
shutdown occurs, this function writes 1 in the register map (address: E6h and data: D7). This data can detect a
thermal-shutdown condition by reading CSPI. This flag in the register can be cleared by VBAT = 0V, REG_EN
pin going Low, or by a software reset (address: E8h, doing write access with option data). See the TSD
operation in Figure 83.
63
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