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AM335x power options
TPS65217: PMU w/ lin-charger and WLED
Jan ‘12
• Dual Input Linear Charger
• ~50% smaller total solution compared to discrete
 700mA Charge Current Max
• Supported on Beagle-Bone board
 3 Step Down Converters
• WLED backlight -> up to 5’ displays
 3x 1.2A. Vout externally adjustable.
 2.25MHz Switching Frequency
 4 Low Dropout Regulators
 2 x 100mA
 2 x 200mA (also configurable as Load
Switches)
 WLED Driver
 38V Output for up to 2 x 10 LED in series
Voltage Supervisor
2
 I C Interface
 48 pin QFN (6x6mm / 0.4mm pitch) or (7x7mm /
0.5mm pitch)
• TI Cortex A8 MPU processor (AM335x):
• TPS65217A: AM335X –ZCE
• TPS65217B: AM335X -ZCZ
TPS65910A: PMU for Cortex A8 with RTC
Released
• 2 step-down converters with Smart Reflex capability, for
core supplies (1.5A)
• 1.8V/3.3V step-down converter for IO (1A)
• 1 boost 5V/100mA
• 8 configurable Low noise LDOs for peripherals and
processor power rails
• Flexible clocking with 3 modes
• 32kHz crystal oscillator
• 32kHz integrated RC oscillator
• 32kHz clock input (slave mode)
• Real Time Clock & register
• Backup battery charger
• Thermal Shutdown protection and Hot Die Detection
• Dedicated High Speed I2C serial control & Smart Reflex
• Efficient HW Sleep Mode management
• QFN Package 6x6 mm, 0.4mm pitch (POR)
• Cortex A8 processors like OMAP/ Sitara, AM335x
and other vendors.
• Consumer and industrial applications
• Fast time-to-market: proven ref-designs for
several OMAP, Sitara and other processors.
Several available ref-designs.
• Integration: 50% smaller footprint than
discrete, ideal for portable applications.
Also 32KHz clock and RTC integration.
• Competitive pricing for cost-sensitive
applications.
• Supported on AM335x EVM
3x DCDC
8x LDO
Power
manager
Clock
Manager
32kHz
RTC
Boost
(5V)
Back-Up
Battery
Charger
Thermal
protection
GPIOs
TPS650250: flexible PMU with 3 DCDC and 3 LDO
Released
• 6 Outputs: 3 DC/DC and 3 LDO
• DCDC1: 1.6A, 97% Efficient for System Voltage:
3.3V or 2.8V or Adjustable
• DCDC2: 0.8A, up to 95% Efficient for Memory Voltage:
1.8V or 2.5V or Adjustable
• DCDC3: 0.8A, 90% Efficient for Processor Core:
adjustable output voltage
• 2 × 200mA General Purpose LDOs (LDO1 and LDO2):
adjustable output voltages
• 30mA LDO3 for Vdd_alive
• 2.25MHz DCDC Switching Frequency
• 85uA Quiescent Current
• PWM / PFM Modes
• DC/DC with separate Enable Pins
• Package: 5x5mm2 QFN-32 (0.5mm Pitch)
• ARM11 and Cortex A8 processors like AM335x
• Portable consumer/ industrial devices
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On SubArtic ref-design
Lowest cost solution.
Output voltages can be set by external resistor dividers.
This Vout flexibility makes it a perfect all-rounder to
power any processor family.
Flexible sequencing due to the separate enable pins
Ideal for low-power and single-cell Li-Ion applications
High efficiency at light loads
Power saving capability
Small solution size