Texas Instruments DRV821 EVM Series, Руководство пользователя, Страница: 9 / 16

4.3 Independent Half-Bridge Control Mode (MODE=Hi-Z)
When the MODE pin is Hi-Z on power up, the device is latched into independent half-bridge control mode.
Independent half bridge control is only supported by the DRV821xDSG devices. This mode allows for each half-
bridge to be directly controlled in order to support high-side slow decay or driving two independent loads. The
truth table for independent half-bridge mode is shown in
Table 4-4 .
Figure 4-4. MODE /nSLEEP does not require a jumper for independent half-bridge mode
Table 4-4. Independent Half-Bridge Control Mode
INx OUTx Description
LOW - turn INx PWM pot completely counter-
clockwise
L OUTx Low-Side ON
HIGH - turn INx PWM pot completely clockwise H OUTx High-Side ON
PWM - turn INx PWM pot in any position PWM PWM = 0 -> OUTx Low-Side
ONPWM = 1 -> OUTx High-Side ON
www.ti.com MODE/nSLEEP Jumper and Speed-Adjustment Potentiometers
SLOU540A – NOVEMBER 2020 – REVISED DECEMBER 2020
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DRV821xEVM and DRV8220EVM User's Guide 9
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