Sitara AM335x Power Solutions January 2014 1 AM335x Power Solutions Feature Power (DCDC/LDO) Other features Charger RTC Voltage Range TPS650250 TPS65217 TPS65910 3 DCDC / 3 LDO 3 DCDC / 2+2 LDOs 3 DCDC / 9 LDO • Power-fail comparator No Linear w/ Power-Path • 5V boost (100mA) • 2 x I2C interface No NO NO YES Requires external LDO LDO to power AM335x RTC Coin-cell input for RTC backup 2.75..5.5V 2.7...5.5V 2.5..6.0V 20V tolerant DynamicVoltageScaling NO Supervisor Power sequencing • WLED driver • 2LDO can be configured as load switches. • I2C interface YES YES 300/600/720/800/1000MHz 300/600/720/800/1000MHz NO NO NO NO YES YES Requires external enable circuit Temperature range -40..85C / -40..125 (Q1) -40..105C -40..85C Memory support LPDDR1, DDR2, DDR3 LPDDR1,DDR2, DDR3(L)(RS) LPDDR1/DDR2, DDR3 32 pin QFN 5x5mm2, 0.5mm pitch 48pin QFN 6x6mm2, 0.4mm pitch 48pin QFN 6x6mm2, 0.4mm pitch In production In production In production Package Status 2 TPS650250 Features • 2.5V to 6.0V input voltage range – • Ideal for single cell Li+ batteries Three step-down converters – – – 1x1.6A, adjustable output 2x0.8A, adjustable output 2.25MHz switching frequency • Two adjustable LDOs • One keep-alive LDO – – 200mA, 0.9-1.8V adjustable output 30mA, 1.0V fixed output • Power-Fail comparator • Separate enable pins for DCDCs and LDOs • 85uA quiescent current • 32 pin 5x5mm QFN w/ 0.5mm pitch • Also available as Q100 w/ -40..125C temperature range. Bennefits • • • • Low-cost solution Extended temperature range Available in 0.5mm pitch package Reference design available at http://www.ti.com/tool/pr1067.1 3 TPS65217 Features 4.7mF • • • 2.7V to 5.8V input voltage range 2A, Dual Input Power Path Linear Charger with supplement mode – • • MUX_OUT MUX 100nF from system 500mW (max) impedance Switches can be configured as LDOs (1.8V-6.0V output voltage range) Bennefits Lin Charger & Power Path MGMT MUX_IN BAT Single cell Li+ Battery Q2 BAT_SENSE TEMP SENSE BIAS BYPASS 10mF TS NTC 10mF VIO I/O Voltage PWR_EN from system host / uC PGOOD Always-on supply Momentatary Push Button to system host / uC LDO_PGOOD to system host / uC 100k PB_IN DIGITAL 100k VIO (always on) nWAKEUP to system host / uC Always-on supply 100k from system host / uC VIO (always on) nINT 100k nRESET to system host / uC 10mF VIO SCL from system host / uC VIO SDA from system host / uC VIN_DCDC1 SYS I2C L4 SYS Supports two strings of up to 10LEDs @ 25mA each Extended temperature range of -40..105C I2C interface 6x6mm QFN w/ 0.4mm pitch VBAT VSYS VICHARGE VTS INT_LDO 100nF 100mA, 0.9-1.8V adjustable output WLED driver – • • • 4.7mF to system host / uC Two 500mW load switches / LDOs – – to system load Q1 22mF Two adjustable LDOs – • 1.2A, 0.9V-3.3V adjustable output 2.25MHz switching frequency SYS Q1 USB from USB connector Three step-down converters – – • 700mA max charge current AC from USB connector DCDC1 L1 VDCDC1 to system 10mF 10mF FB_WLED 4.7mF Up to 2x 10 LEDs VIN_DCDC2 WLED Driver ISINK1 ISINK2 ISET1 ISET2 DCDC2 SYS L2 VDCDC2 to system 10mF 10mF VIN_DCDC3 DCDC3 4.7uF L3 VDCDC3 SYS to system 10mF VINDO SYS VLDO1 to system LS1_IN LDO1 from 1.8V-5.8V supply 2.2uF • • • VLDO2 to system LDO2 LS1_OUT to system load 10mF 2.2uF LS2_IN LOAD SW2 / LDO4 from 1.8V-5.8V supply LS2_OUT to system load 10mF AGND PGND Compact power solution for portable systems Extended temperature range Reference design available at http://www.ti.com/litv/pdf/slvu551f LOAD SW1/ LDO3 4 TPS65910 Features • • 2.7V to 5.5V input voltage range Three step-down converters – – – • One step-up converter – – • 20mA 1.8V Internal power-path for coin-cell backup battery RTC – – • • 4x300mA + 4x150mA Output voltage range 1.2V-3.3V One RTC LDOs – – • 100mA, 5V fixed output (VDD3) 1MHz switching frequency 8 adjustable LDOs – – • 1.5A, 0.6V-1.5V adjustable output (VDD1,2) 1.0A, 1.5/1.8/2.5/3.3V (VIO) 3MHz switching frequency 32kHz crystal oscillator Date, time , and calendar I2C interface 48pin, 6x6mm QFN w/ 0.4mm pitch Bennefits • • Compact solution for portable systems w/ external charger or non-portable systems. Reference design available at http://www.ti.com/litv/pdf/swca089a 5